MAX211CWI+ [MAXIM]
Line Driver, 4 Func, 4 Driver, 5 Rcvr, CMOS, PDSO28, SO-28;
| 型号： | MAX211CWI+ |
| 厂家： | 
MAXIM INTEGRATED PRODUCTS |
| 描述： | Line Driver, 4 Func, 4 Driver, 5 Rcvr, CMOS, PDSO28, SO-28 驱动器 |
| 文件： | 总36页 (文件大小：396K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
19-4323; Rev 15; 1/06
+5V-Powered, Multichannel RS-232
Drivers/Receivers
General Description
Next-Generation
Device Features
♦ For Low-Voltage, Integrated ESD Applications
MAX3222E/MAX3232E/MAX3237E/MAX3241E/
MAX3246E: +3.0V to +5.5V, Low-Power, Up to
1Mbps, True RS-232 Transceivers Using Four
0.1µF External Capacitors (MAX3246E Available
in a UCSP™ Package)
The MAX220–MAX249 family of line drivers/receivers is
intended for all EIA/TIA-232E and V.28/V.24 communica-
tions interfaces, particularly applications where ±±2V is
not available.
These parts are especially useful in battery-powered sys-
tems, since their low-power shutdown mode reduces
power dissipation to less than 5µW. The MAX225,
MAX233, MAX235, and MAX245/MAX246/MAX247 use
no external components and are recommended for appli-
cations where printed circuit board space is critical.
♦ For Low-Cost Applications
MAX221E: 15kV ESD-Protected, +5V, 1µA,
Single RS-232 Transceiver with AutoShutdown™
________________________Applications
Ordering Information
PART
TEMP RANGE
0°C to +70°C
PIN-PACKAGE
±6 Plastic DIP
±6 Narrow SO
±6 Wide SO
Dice*
Portable Computers
MAX220CPE
MAX220CSE
MAX220CWE
MAX220C/D
MAX220EPE
MAX220ESE
MAX220EWE
MAX220EJE
MAX220MJE
Low-Power Modems
0°C to +70°C
0°C to +70°C
0°C to +70°C
Interface Translation
Battery-Powered RS-232 Systems
Multidrop RS-232 Networks
-40°C to +85°C
-40°C to +85°C
-40°C to +85°C
-40°C to +85°C
-55°C to +±25°C
±6 Plastic DIP
±6 Narrow SO
±6 Wide SO
±6 CERDIP
±6 CERDIP
AutoShutdown and UCSP are trademarks of Maxim Integrated
Products, Inc.
Ordering Information continued at end of data sheet.
*Contact factory for dice specifications.
Selection Table
Power
Supply
(V)
+5
+5
No. of
RS-232
Drivers/Rx Ext. Caps (µF)
2/2
2/2
4/5
5/5
5/0
2/2
Nominal
SHDN
Rx
Part
No. of
Cap. Value & Three- Active in Data Rate
Number
MAX220
MAX222
State
SHDN
—
—
✔
✔
—
—
(kbps)
±20
200
±20
±20
±20
±20
Features
4
4
4
0
4
2
0.047/0.33 No
0.±
±.0 (0.±)
—
±.0 (0.±)
±.0 (0.±)
Ultra-low-power, industry-standard pinout
Low-power shutdown
MAX24± and receivers active in shutdown
Available in SO
Yes
Yes
Yes
Yes
No
MAX223 (MAX2±3) +5
MAX225 +5
MAX230 (MAX200) +5
5 drivers with shutdown
MAX23± (MAX20±) +5 and
Standard +5/+±2V or battery supplies;
same functions as MAX232
Industry standard
Higher slew rate, small caps
No external caps
No external caps, high slew rate
Replaces ±488
No external caps
Shutdown, three state
Complements IBM PC serial port
Replaces ±488 and ±489
Standard +5/+±2V or battery supplies;
single-package solution for IBM PC serial port
DIP or flatpack package
Complete IBM PC serial port
Separate shutdown and enable
Open-line detection simplifies cabling
High slew rate
+7.5 to +±3.2
MAX232 (MAX202) +5
MAX232A +5
MAX233 (MAX203) +5
MAX233A +5
MAX234 (MAX204) +5
MAX235 (MAX205) +5
MAX236 (MAX206) +5
MAX237 (MAX207) +5
MAX238 (MAX208) +5
MAX239 (MAX209) +5 and
2/2
2/2
2/2
2/2
4/0
5/5
4/3
5/3
4/4
3/5
4
4
0
0
4
0
4
4
4
2
±.0 (0.±)
0.±
—
—
±.0 (0.±)
—
±.0 (0.±)
±.0 (0.±)
±.0 (0.±)
±.0 (0.±)
No
No
No
No
No
Yes
Yes
No
No
No
—
—
—
—
—
—
—
—
—
—
±20 (64)
200
±20
200
±20
±20
±20
±20
±20
±20
+7.5 to +±3.2
+5
MAX24± (MAX2±±) +5
MAX240
5/5
4/5
2/2
2/2
8/±0
8/±0
8/±0
8/9
8/8
6/±0
4
4
4
4
4
0
0
0
4
4
±.0
±.0 (0.±)
0.±
0.±
±.0
—
—
—
±.0
±.0
Yes
Yes
Yes
No
—
—
✔
—
—
✔
✔
✔
✔
✔
±20
±20
200
200
±20
±20
±20
±20
±20
±20
MAX242
MAX243
MAX244
MAX245
MAX246
MAX247
MAX248
MAX249
+5
+5
+5
+5
+5
+5
+5
+5
No
Yes
Yes
Yes
Yes
Yes
High slew rate, int. caps, two shutdown modes
High slew rate, int. caps, three shutdown modes
High slew rate, int. caps, nine operating modes
High slew rate, selective half-chip enables
Available in quad flatpack package
________________________________________________________________ Maxim Integrated Products
1
For pricing, delivery, and ordering information, please contact Maxim/Dallas Direct! at
1-888-629-4642, or visit Maxim’s website at www.maxim-ic.com.
+5V-Powered, Multichannel RS-232
Drivers/Receivers
ABSOLUTE MAXIMUM RATINGS—MAX220/222/232A/233A/242/243
Supply Voltage (V ) ...............................................-0.3V to +6V
±8-Pin Plastic DIP (derate ±±.±±mW/°C above +70°C)..889mW
20-Pin Plastic DIP (derate 8.00mW/°C above +70°C) ..440mW
±6-Pin Narrow SO (derate 8.70mW/°C above +70°C) ...696mW
±6-Pin Wide SO (derate 9.52mW/°C above +70°C)......762mW
±8-Pin Wide SO (derate 9.52mW/°C above +70°C)......762mW
20-Pin Wide SO (derate ±0.00mW/°C above +70°C)....800mW
20-Pin SSOP (derate 8.00mW/°C above +70°C) ..........640mW
±6-Pin CERDIP (derate ±0.00mW/°C above +70°C).....800mW
±8-Pin CERDIP (derate ±0.53mW/°C above +70°C).....842mW
Operating Temperature Ranges
MAX2_ _AC_ _, MAX2_ _C_ _.............................0°C to +70°C
MAX2_ _AE_ _, MAX2_ _E_ _ ..........................-40°C to +85°C
MAX2_ _AM_ _, MAX2_ _M_ _.......................-55°C to +±25°C
Storage Temperature Range.............................-65°C to +±60°C
Lead Temperature (soldering, ±0s) (Note 3) ...................+300°C
CC
V+ (Note ±)..................................................(V
- 0.3V) to +±4V
CC
V- (Note ±).............................................................+0.3V to +±4V
Input Voltages
T
..............................................................-0.3V to (V
- 0.3V)
CC
IN
IN
R
R
(Except MAX220) ........................................................±30V
(MAX220).....................................................................±25V
IN
OUT
OUT
T
T
(Except MAX220) (Note 2) .......................................±±5V
(MAX220)...............................................................±±3.2V
Output Voltages
T
...................................................................................±±5V
.........................................................-0.3V to (V
OUT
OUT
R
+ 0.3V)
CC
Driver/Receiver Output Short Circuited to GND.........Continuous
Continuous Power Dissipation (T = +70°C)
A
±6-Pin Plastic DIP (derate ±0.53mW/°C above +70°C)..842mW
Note 1: ꢁor the MAX220, V+ and V- can have a maximum magnitude of 7V, but their absolute difference cannot exceed ±3V.
Note 2: Input voltage measured with T in high-impedance state, SHDN or V = 0V.
OUT
CC
Note 3: Maximum reflow temperature for the MAX233A is +225°C.
Stresses beyond those listed under “Absolute Maximum Ratings” may cause permanent damage to the device. These are stress ratings only, and functional
operation of the device at these or any other conditions beyond those indicated in the operational sections of the specifications is not implied. Exposure to
absolute maximum rating conditions for extended periods may affect device reliability.
ELECTRICAL CHARACTERISTICS—MAX220/222/232A/233A/242/243
(V
= +5V ±±0ꢀ, C±–C4 = 0.±µꢁF MAX220, C± = 0.047µꢁ, C2–C4 = 0.33µꢁ, T = T
to T
F unless otherwise noted.)
MAX
CC
A
MIN
PARAMETER
CONDITIONS
MIN
TYP
MAX
UNITS
RS-232 TRANSMITTERS
Output Voltage Swing
All transmitter outputs loaded with 3kΩ to GND
±5
±8
±.4
±.4
V
V
Input Logic Threshold Low
0.8
All devices except MAX220
2
Input Logic Threshold High
V
MAX220: V
= 5.0V
2.4
CC
All except MAX220, normal operation
5
40
±±
Logic Pullup/lnput Current
µA
SHDN = 0V, MAX222/MAX242, shutdown,
MAX220
±0.0±
V
= 5.5V, SHDN = 0V, V
= ±±5V,
OUT
CC
±0.0±
±0.0±
±±0
MAX222/MAX242
Output Leakage Current
µA
V
= ±±5V
±±0
±25
±±6
OUT
V
= SHDN = 0V
CC
MAX220, V
= ±±2V
OUT
Data Rate
200
±0M
±22
kbps
Transmitter Output Resistance
V
V
= V+ = V- = 0V, V
= ±2V
300
±7
Ω
CC
OUT
V
= 0V
OUT
Output Short-Circuit Current
RS-232 RECEIVERS
= 0V
mA
OUT
MAX220
±60
±30
±25
RS-232 Input Voltage Operating Range
V
V
V
MAX220
All except MAX243 R2
0.8
-3
±.3
IN
RS-232 Input Threshold Low
RS-232 Input Threshold High
V
V
= 5V
= 5V
CC
CC
MAX243 R2 (Note 4)
IN
All except MAX243 R2
±.8
2.4
IN
MAX243 R2 (Note 4)
-0.5
-0.±
IN
2
_______________________________________________________________________________________
+5V-Powered, Multichannel RS-232
Drivers/Receivers
ELECTRICAL CHARACTERISTICS—MAX220/222/232A/233A/242/243 (continued)
(V
= +5V ±±0ꢀ, C±–C4 = 0.±µꢁF MAX220, C± = 0.047µꢁ, C2–C4 = 0.33µꢁ, T = T
to T
F unless otherwise noted.)
MAX
CC
A
MIN
PARAMETER
CONDITIONS
MIN
TYP
MAX
UNITS
All except MAX220/MAX243, V
hysteresis in SHDN
= 5V, no
CC
0.2
0.5
±.0
RS-232 Input Hysteresis
RS-232 Input Resistance
V
MAX220
MAX243
0.3
±
3
3
5
7
T
= +25°C (MAX220)
KΩ
A
5
7
I
I
I
= 3.2mA
0.2
0.4
0.4
OUT
OUT
OUT
TTL/CMOS Output Voltage Low
TTL/CMOS Output Voltage High
TTL/CMOS Output Short-Circuit Current
V
V
= ±.6mA (MAX220)
= -±.0mA
3.5
-2
V
- 0.2
CC
Sourcing V
= GND
-±0
OUT
mA
Shrinking V
= V
±0
30
OUT
CC
SHDN = V
MAX222), 0V ≤ V
MAX242
or EN = V
(SHDN = 0V for
CC
CC
TTL/CMOS Output Leakage Current
±0.05
±±0
0.8
µA
≤ V
CC
OUT
EN Input Threshold Low
EN Input Threshold High
Operating Supply Voltage
±.4
±.4
V
V
V
MAX242
2.0
4.5
5.5
2
MAX220
0.5
4
No load
MAX222/MAX232A/MAX233A/
MAX242/MAX243
±0
V
Supply Current (SHDN = V ),
CC
CC
µA
µA
figures 5, 6, ±±, ±9
MAX220
±2
±5
3kΩ load both
inputs
MAX222/MAX232A/MAX233A/
MAX242/MAX243
T
A
T
A
T
A
T
A
= +25°C
0.±
2
±0
50
= 0°C to +70°C
= -40°C to +85°C
= -55°C to +±25°C
MAX222/
MAX242
Shutdown Supply Current
2
50
35
±00
±±
0.8
SHDN Input Leakage Current
SHDN Threshold Low
MAX222/MAX242
MAX222/MAX242
MAX222/MAX242
µA
V
±.4
±.4
SHDN Threshold High
2.0
6
V
C = 50pꢁ to
L
MAX222/MAX232A/MAX233/
MAX242/MAX243
±2
30
2500pꢁ, R = 3kΩ
L
to 7kΩ, V
= 5V,
CC
Transition Slew Rate
V/µs
T
A
= +25°C,
MAX220
±.5
3
30.0
measured from
+3V to -3V or -3V
MAX222/MAX232A/MAX233/
MAX242/MAX243
±.3
4
3.5
±0
t
PHLT
PLHT
MAX220
Transmitter Propagation Delay TLL to
RS-232 (Normal Operation), ꢁigure ±
µs
MAX222/MAX232A/MAX233/
MAX242/MAX243
±.5
5
3.5
±0
t
MAX220
Note 4: MAX243 R2
is guaranteed to be low when R2 is ≥ 0V or is floating.
IN
OUT
_______________________________________________________________________________________
3
+5V-Powered, Multichannel RS-232
Drivers/Receivers
ELECTRICAL CHARACTERISTICS—MAX220/222/232A/233A/242/243 (continued)
(V
= +5V ±±0ꢀ, C±–C4 = 0.±µꢁF MAX220, C± = 0.047µꢁ, C2–C4 = 0.33µꢁ, T = T
to T
F unless otherwise noted.)
MAX
CC
A
MIN
PARAMETER
CONDITIONS
MIN
TYP
0.5
0.6
0.6
0.8
0.5
MAX
UNITS
MAX222/MAX232A/MAX233/
MAX242/MAX243
±
3
t
t
PHLR
PLHR
MAX220
Receiver Propagation Delay RS-232 to
TLL (Normal Operation), ꢁigure 2
µs
MAX222/MAX232A/MAX233/
MAX242/MAX243
±
MAX220
3
t
t
MAX242
±0
PHLS
Receiver Propagation Delay RS-232 to
TLL (Shutdown), ꢁigure 2
µs
MAX242
2.5
±0
PHLS
Receiver-Output Enable Time, ꢁigure 3
Receiver-Output Disable Time, ꢁigure 3
t
t
MAX242
MAX242
±25
±60
500
500
ns
ns
ER
DR
MAX222/MAX242, 0.±µꢁ
caps (includes charge-pump
start-up)
Transmitter-Output Enable Time (SHDN
Goes High), ꢁigure 4
t
t
250
µs
ns
ET
DT
Transmitter-Output Disable Time (SHDN
Goes Low), ꢁigure 4
MAX222/MAX242,
0.±µꢁ caps
600
300
MAX222/MAX232A/MAX233/
MAX242/MAX243
Transmitter + to - Propagation Delay
Difference (Normal Operation)
t
- t
ns
PHLT PLHT
MAX220
2000
MAX222/MAX232A/MAX233/
MAX242/MAX243
±00
225
Receiver + to - Propagation Delay
Difference (Normal Operation)
t
- t
ns
PHLR PLHR
MAX220
__________________________________________Typical Operating Characteristics
MAX220/MAX222/MAX232A/MAX233A/MAX242/MAX243
AVAILABLE OUTPUT CURRENT
vs. DATA RATE
MAX222/MAX242
ON-TIME EXITING SHUTDOWN
OUTPUT VOLTAGE vs. LOAD CURRENT
10
8
11
10
+10V
1µF
V+
OUTPUT LOAD CURRENT
FLOWS FROM V+ TO V-
1µF CAPS
EITHER V+ OR V- LOADED
V+
6
0.1µF CAPS
+5V
+5V
ALL CAPS
0.1µF
V
= 5V
CC
9
8
7
6
5
4
4
1µF
NO LOAD ON
TRANSMITTER OUTPUTS
(EXCEPT MAX220, MAX233A)
SHDN
V
= +5.25V
= +4.75V
0V
0V
2
0
CC
ALL CAPS
0.1µF
V- LOADED, NO LOAD ON V+
-2
-4
-6
-8
-10
V
CC
1µF CAPS
0.1µF
1µF
0.1µF CAPS
V-
V-
V+ LOADED, NO LOAD ON V-
10 15 20 25
LOAD CURRENT (mA)
-10V
0
5
0
10
20
30
40
50
60
500µs/div
DATA RATE (kbits/sec)
4
_______________________________________________________________________________________
+5V-Powered, Multichannel RS-232
Drivers/Receivers
ABSOLUTE MAXIMUM RATINGS—MAX223/MAX230–MAX241
V
...........................................................................-0.3V to +6V
20-Pin Wide SO (derate ±0 00mW/°C above +70°C).......800mW
24-Pin Wide SO (derate ±±.76mW/°C above +70°C).......94±mW
28-Pin Wide SO (derate ±2.50mW/°C above +70°C) .............±W
44-Pin Plastic ꢁP (derate ±±.±±mW/°C above +70°C) .....889mW
±4-Pin CERDIP (derate 9.09mW/°C above +70°C)..........727mW
±6-Pin CERDIP (derate ±0.00mW/°C above +70°C)........800mW
20-Pin CERDIP (derate ±±.±±mW/°C above +70°C)........889mW
24-Pin Narrow CERDIP
CC
V+................................................................(V
V- ............................................................................+0.3V to -±4V
Input Voltages
T
- 0.3V) to +±4V
CC
............................................................-0.3V to (V
+ 0.3V)
CC
IN
R
......................................................................................±30V
IN
Output Voltages
...................................................(V+ + 0.3V) to (V- - 0.3V)
T
OUT
R
.........................................................-0.3V to (V
+ 0.3V)
(derate ±2.50mW/°C above +70°C) ..............±W
OUT
CC
Short-Circuit Duration, T
Continuous Power Dissipation (T = +70°C)
±4-Pin Plastic DIP (derate ±0.00mW/°C above +70°C)....800mW
±6-Pin Plastic DIP (derate ±0.53mW/°C above +70°C)....842mW
20-Pin Plastic DIP (derate ±±.±±mW/°C above +70°C)....889mW
24-Pin Narrow Plastic DIP
......................................Continuous
24-Pin Sidebraze (derate 20.0mW/°C above +70°C)..........±.6W
28-Pin SSOP (derate 9.52mW/°C above +70°C).............762mW
Operating Temperature Ranges
MAX2 _ _ C _ _......................................................0°C to +70°C
MAX2 _ _ E _ _...................................................-40°C to +85°C
MAX2 _ _ M _ _ ...............................................-55°C to +±25°C
Storage Temperature Range.............................-65°C to +±60°C
Lead Temperature (soldering, ±0s) (Note 4) ...................+300°C
OUT
A
(derate ±3.33mW/°C above +70°C) ..........±.07W
24-Pin Plastic DIP (derate 9.09mW/°C above +70°C)......500mW
±6-Pin Wide SO (derate 9.52mW/°C above +70°C).........762mW
Note 4: Maximum reflow temperature for the MAX233/MAX235 is +225°C.
Stresses beyond those listed under “Absolute Maximum Ratings” may cause permanent damage to the device. These are stress ratings only, and functional
operation of the device at these or any other conditions beyond those indicated in the operational sections of the specifications is not implied. Exposure to
absolute maximum rating conditions for extended periods may affect device reliability.
ELECTRICAL CHARACTERISTICS—MAX223/MAX230–MAX241
(MAX223/230/232/234/236/237/238/240/24±, V
= +5V ±±0; MAX233/MAX235, V
= 5V ±5ꢀF C±–C4 = ±.0µꢁ; MAX23±/MAX239,
CC
CC
V
CC
= 5V ±±0ꢀ; V+ = 7.5V to ±3.2V; T = T
to T
; unless otherwise noted.)
A
MIN
MAX
PARAMETER
CONDITIONS
MIN
TYP
±7.3
5
MAX
UNITS
Output Voltage Swing
All transmitter outputs loaded with 3kΩ to ground
±5.0
V
MAX232/233
±0
±5
±
No load,
V
CC
Power-Supply Current
MAX223/230/234–238/240/24±
7
mA
mA
T
A
= +25°C
MAX23±/239
MAX23±
0.4
±.8
5
5
V+ Power-Supply Current
MAX239
±5
50
±0
0.8
MAX223
±5
±
Shutdown Supply Current
Input Logic Threshold Low
T
A
= +25°C
µA
V
MAX230/235/236/240/24±
T
T
; EN, SHDN (MAX233); EN, SHDN (MAX230/235–24±)
IN
2.0
2.4
IN
Input Logic Threshold High
V
EN, SHDN (MAX223);
EN, SHDN (MAX230/235/236/240/24±)
Logic Pull-Up Current
T
IN
= 0V
±.5
200
+30
µA
V
Receiver Input Voltage
Operating Range
-30
_______________________________________________________________________________________
5
+5V-Powered, Multichannel RS-232
Drivers/Receivers
ELECTRICAL CHARACTERISTICS—MAX223/MAX230–MAX241 (continued)
(MAX223/230/232/234/236/237/238/240/24±, V
= +5V ±±0; MAX233/MAX235, V
= 5V ±5ꢀF C±–C4 = ±.0µꢁ; MAX23±/MAX239,
CC
CC
V
CC
= 5V ±±0ꢀ; V+ = 7.5V to ±3.2V; T = T
to T ; unless otherwise noted.)
A
MIN
MAX
PARAMETER
CONDITIONS
MIN
TYP
MAX UNITS
Normal operation
0.8
±.2
SHDN = 5V (MAX223)
SHDN = 0V (MAX235/236/240/24±)
T
V
= +25°C,
A
RS-232 Input Threshold Low
RS-232 Input Threshold High
V
= 5V
CC
Shutdown (MAX223)
SHDN = 0V,
0.6
±.5
±.7
±.5
EN = 5V (R4 , R5
)
IN
IN
Normal operation
SHDN = 5V (MAX223)
SHDN = 0V (MAX235/236/240/24±)
2.4
T
A
= +25°C,
V
V
= 5V
CC
Shutdown (MAX223)
SHDN = 0V,
2.4
EN = 5V (R4 F R5
)
IN
IN
RS-232 Input Hysteresis
V
= 5V, no hysteresis in shutdown
= 5V
0.2
3
0.5
5
±.0
7
V
kΩ
V
CC
RS-232 Input Resistance
T
A
= +25°C, V
CC
TTL/CMOS Output Voltage Low
TTL/CMOS Output Voltage High
I
I
= ±.6mA (MAX23±/232/233, I = 3.2mA)
OUT
0.4
OUT
OUT
= -±mA
3.5
V
- 0.4
V
CC
0V ≤ R
EN = V
≤ V ; EN = 0V (MAX223);
CC
(MAX235–24± )
OUT
TTL/CMOS Output Leakage Current
Receiver Output Enable Time
0.05
±±0
µA
ns
CC
MAX223
600
400
900
250
0.5
4
Normal
operation
MAX235/236/239/240/24±
MAX223
Normal
operation
Receiver Output Disable Time
Propagation Delay
ns
µs
MAX235/236/239/240/24±
Normal operation
±0
40
40
RS-232 IN to
TTL/CMOS OUT,
C = ±50pꢁ
L
t
PHLS
PLHS
SHDN = 0V
(MAX223)
t
6
MAX223/MAX230/MAX234–24±, T = +25°C, V
= 5V,
A
CC
R = 3kΩ to 7kΩF C = 50pꢁ to 2500pꢁ, measured from
3
5.±
4
30
30
L
L
+3V to -3V or -3V to +3V
Transition Region Slew Rate
Transmitter Output Resistance
V/µs
MAX23±/MAX232/MAX233, T = +25°C, V
= 5V,
CC
A
R = 3kΩ to 7kΩ, C = 50pꢁ to 2500pꢁ, measured from
L
L
+3V to -3V or -3V to +3V
V
CC
= V+ = V- = 0V, V = ±2V
OUT
300
Ω
Transmitter Output Short-Circuit
Current
±±0
mA
6
_______________________________________________________________________________________
+5V-Powered, Multichannel RS-232
Drivers/Receivers
__________________________________________Typical Operating Characteristics
MAX223/MAX230–MAX241
TRANSMITTER OUTPUT VOLTAGE (V
vs. LOAD CAPACITANCE AT
DIFFERENT DATA RATES
)
OH
TRANSMITTER SLEW RATE
vs. LOAD CAPACITANCE
TRANSMITTER OUTPUT
VOLTAGE (V ) vs. V
OH
CC
8.5
8.0
7.5
7.0
6.5
12.0
11.0
10.0
9.0
7.4
7.2
7.0
6.8
6.6
6.4
6.2
6.0
1 TRANSMITTER LOADED
T
= +25°C
A
2 TRANSMITTERS
LOADED
V
= +5V
CC
LOADED, R = 3kΩ
L
C1–C4 = 1µF
1 TRANSMITTER
LOADED
2 TRANSMITTERS
LOADED
160kbits/sec
80kbits/sec
20kbits/sec
3 TRANS-
MITTERS
LOADED
8.0
7.0
T
= +25°C
T
= +25°C
V = +5V
CC
A
A
3 TRANSMITTERS
LOADED
6.0
C1–C4 = 1µF
TRANSMITTER
LOADS =
3 TRANSMITTERS LOADED
4 TRANSMITTERS
LOADED
5.0
4.0
R = 3kΩ
L
4 TRANSMITTERS
LOADED
3kΩ || 2500pF
C1–C4 = 1µF
4.5
5.0
5.5
0
500
1000
1500
2000
2500
0
500
1000
1500
2000
2500
V
(V)
LOAD CAPACITANCE (pF)
LOAD CAPACITANCE (pF)
CC
TRANSMITTER OUTPUT VOLTAGE (V
vs. LOAD CAPACITANCE AT
DIFFERENT DATA RATES
)
OL
TRANSMITTER OUTPUT
VOLTAGE (V ) vs. V
TRANSMITTER OUTPUT VOLTAGE (V+, V-)
vs. LOAD CURRENT
OL
CC
10
8
-6.0
-6.2
-6.4
-6.6
-6.8
-7.0
-7.2
-7.4
-7.6
-6.0
-6.5
4 TRANS-
MITTERS
LOADED
T
= +25°C
A
T
= +25°C
A
C1–C4 = 1µF
TRANSMITTER
LOADS =
V
= +5V
CC
6
3 TRANSMITTERS LOADED
T
V
= +25°C
= +5V
A
CC
R = 3kΩ
L
4
3kΩ || 2500pF
C1–C4 = 1µF
-7.0
-7.5
-8.0
-8.5
-9.0
C1–C4 = 1µF
2
V- LOADED,
NO LOAD
ON V+
V+ AND V-
EQUALLY
LOADED
V+ LOADED,
NO LOAD
ON V-
160kbits/sec
80kbits/sec
20Kkbits/sec
0
1 TRANS-
-2
-4
-6
MITTER
LOADED
3 TRANS-
MITTERS
LOADED
2 TRANS-
MITTERS
LOADED
-8
ALL TRANSMITTERS UNLOADED
-10
0
5
10 15 20 25 30 35 40 45 50
CURRENT (mA)
0
500
1000
1500
2000
2500
4.5
5.0
5.5
LOAD CAPACITANCE (pF)
V
(V)
CC
V+, V- WHEN EXITING SHUTDOWN
(1µF CAPACITORS)
MAX220-13
V+
O
V-
SHDN*
500ms/div
*SHUTDOWN POLARITY IS REVERSED
FOR NON MAX241 PARTS
_______________________________________________________________________________________
7
+5V-Powered, Multichannel RS-232
Drivers/Receivers
ABSOLUTE MAXIMUM RATINGS—MAX225/MAX244–MAX249
Supply Voltage (V ) ...............................................-0.3V to +6V
CC
Input Voltages
Continuous Power Dissipation (T = +70°C)
A
28-Pin Wide SO (derate ±2.50mW/°C above +70°C) .............±W
40-Pin Plastic DIP (derate ±±.±±mW/°C above +70°C) ...6±±mW
44-Pin PLCC (derate ±3.33mW/°C above +70°C) ...........±.07W
Operating Temperature Ranges
T
F ENA, ENB, ENR, ENT, ENRA,
IN
ENRB, ENTA, ENTB..................................-0.3V to (V
+ 0.3V)
CC
R
IN
.....................................................................................±25V
T
R
(Note 5).....................................................................±±5V
MAX225C_ _, MAX24_C_ _ ..................................0°C to +70°C
MAX225E_ _, MAX24_E_ _ ...............................-40°C to +85°C
Storage Temperature Range.............................-65°C to +±60°C
Lead Temperature (soldering,±0s) (Note 6) ....................+300°C
OUT
OUT
........................................................-0.3V to (V
+ 0.3V)
CC
Short Circuit (one output at a time)
T
OUT
to GND............................................................Continuous
to GND............................................................Continuous
R
OUT
Note 5: Input voltage measured with transmitter output in a high-impedance state, shutdown, or V
Note 6: Maximum reflow temperature for the MAX225/MAX245/MAX246/MAX247 is +225°C.
= 0V.
CC
Stresses beyond those listed under “Absolute Maximum Ratings” may cause permanent damage to the device. These are stress ratings only, and functional
operation of the device at these or any other conditions beyond those indicated in the operational sections of the specifications is not implied. Exposure to
absolute maximum rating conditions for extended periods may affect device reliability.
ELECTRICAL CHARACTERISTICS—MAX225/MAX244–MAX249
(MAX225, V
= 5.0V ±5ꢀ; MAX244–MAX249, V
= +5.0V ±±0ꢀ, external capacitors C±–C4 = ±µꢁ; T = T
to T ; unless oth-
MAX
CC
CC
A
MIN
erwise noted.)
PARAMETER
CONDITIONS
MIN
TYP
MAX
UNITS
RS-232 TRANSMITTERS
Input Logic Threshold Low
Input Logic Threshold High
±.4
±.4
0.8
V
V
2
Normal operation
Shutdown
±0
50
±±
64
Logic Pull-Up/lnput Current
Tables ±a–±d
µA
±0.0±
±20
±7.5
Data Rate
Tables ±a–±d, normal operation
kbps
V
Output Voltage Swing
All transmitter outputs loaded with 3kΩ to GND
±5
ENA, ENB, ENT, ENTA, ENTB =
±0.0±
±0.0±
±25
±25
V
V
= ±±5V
CC, OUT
Output Leakage Current (Shutdown)
Tables ±a–±d
µA
V
V
= 0V,
= ±±5V
CC
OUT
Transmitter Output Resistance
Output Short-Circuit Current
RS-232 RECEIVERS
V
V
= V+ = V- = 0V, V
= ±2V (Note 7)
300
±7
±0M
±30
Ω
mA
CC
OUT
= 0V
OUT
RS-232 Input Voltage Operating Range
RS-232 Input Threshold Low
RS-232 Input Threshold High
RS-232 Input Hysteresis
±25
V
V
V
V
V
= 5V
= 5V
= 5V
0.8
±.3
±.8
0.5
5
CC
CC
CC
2.4
±.0
7
V
0.2
3
V
RS-232 Input Resistance
kΩ
V
TTL/CMOS Output Voltage Low
TTL/CMOS Output Voltage High
I
I
= 3.2mA
= -±.0mA
0.2
0.4
OUT
3.5
-2
V
- 0.2
V
OUT
CC
Sourcing V
= GND
-±0
OUT
TTL/CMOS Output Short-Circuit Current
TTL/CMOS Output Leakage Current
mA
µA
Shrinking V
= V
±0
30
OUT
CC
Normal operation, outputs disabled,
Tables ±a–±d, 0V ≤ V ≤ V , ENR_ = V
CC
±0.05
±0.±0
OUT
CC
8
_______________________________________________________________________________________
+5V-Powered, Multichannel RS-232
Drivers/Receivers
ELECTRICAL CHARACTERISTICS—MAX225/MAX244–MAX249 (continued)
(MAX225, V
= 5.0V ±5ꢀ; MAX244–MAX249, V
= +5.0V ±±0ꢀ, external capacitors C±–C4 = ±µꢁ; T = T
to T
; unless oth-
MAX
CC
CC
A
MIN
erwise noted.)
PARAMETER
CONDITIONS
MIN
TYP
MAX UNITS
POWER SUPPLY AND CONTROL LOGIC
MAX225
4.75
4.5
5.25
V
Operating Supply Voltage
MAX244–MAX249
MAX225
5.5
±0
±±
40
57
8
20
No load
MAX244–MAX249
MAX225
30
V
CC
Supply Current
mA
(Normal Operation)
3kΩ loads on
all outputs
MAX244–MAX249
T
T
= +25°C
25
µA
50
A
Shutdown Supply Current
Control Input
= T
to T
MAX
A
MIN
Leakage current
Threshold low
Threshold high
±±
µA
±.4
±.4
0.8
V
2.4
5
AC CHARACTERISTICS
C = 50pꢁ to 2500pꢁ, R = 3kΩ to 7kΩ, V = 5V,
L
A
L
CC
Transition Slew Rate
±0
30
V/µs
µs
T = +25°C, measured from +3V to -3V or -3V to +3V
Transmitter Propagation Delay
TLL to RS-232 (Normal Operation),
ꢁigure ±
t
t
t
t
t
t
±.3
±.5
0.6
0.6
0.6
3.0
3.5
3.5
±.5
±.5
±0
PHLT
PLHT
PHLR
PLHR
PHLS
PLHS
Receiver Propagation Delay
TLL to RS-232 (Normal Operation),
ꢁigure 2
µs
µs
Receiver Propagation Delay
TLL to RS-232 (Low-Power Mode),
ꢁigure 2
±0
Transmitter + to - Propagation
Delay Difference (Normal Operation)
t
- t
350
350
ns
ns
PHLT PLHT
Receiver + to - Propagation
Delay Difference (Normal Operation)
t
- t
PHLR PLHR
Receiver-Output EnableTime, ꢁigure 3
Receiver-Output DisableTime, ꢁigure 3
t
t
±00
±00
500
500
ns
ns
ER
DR
MAX246–MAX249
(excludes charge-pump startup)
5
µs
Transmitter Enable Time
t
t
ET
MAX225/MAX245–MAX249
(includes charge-pump startup)
±0
ms
ns
Transmitter Disable Time, ꢁigure 4
±00
DT
Note 7: The 300Ω minimum specification complies with EIA/TIA-232E, but the actual resistance when in shutdown mode or V
0V is ±0MΩ as is implied by the leakage specification.
=
CC
_______________________________________________________________________________________
9
+5V-Powered, Multichannel RS-232
Drivers/Receivers
__________________________________________Typical Operating Characteristics
MAX225/MAX244–MAX249
TRANSMITTER OUTPUT VOLTAGE (V+, V-)
TRANSMITTER SLEW RATE
vs. LOAD CAPACITANCE
OUTPUT VOLTAGE
vs. LOAD CURRENT FOR V+ AND V-
vs. LOAD CAPACITANCE AT
DIFFERENT DATA RATES
18
16
14
12
10
8
10
8
9.0
8.5
8.0
7.5
7.0
6.5
6.0
5.5
5.0
V
= 5V WITH ALL TRANSMITTERS DRIVEN
CC
V
= 5V
CC
LOADED WITH 5kΩ
V+ AND V- LOADED
10kb/sec
6
4
2
EITHER V+ OR
V- LOADED
20kb/sec
EXTERNAL POWER SUPPLY
V
CC
= 5V
1µF CAPACITORS
EXTERNAL CHARGE PUMP
1µF CAPACITORS
8 TRANSMITTERS
DRIVING 5kΩ AND
2000pF AT 20kbits/sec
40kb/sec
60kb/sec
0
40kb/s DATA RATE
8 TRANSMITTERS
LOADED WITH 3kΩ
-2
V- LOADED
-4
-6
6
4
100kb/sec
200kb/sec
V+ AND V- LOADED
-8
V+ LOADED
30 35
ALL CAPACITIORS 1µF
2
-10
0
1
2
3
4
5
0
5
10
15
20
25
0
1
2
3
4
5
LOAD CAPACITANCE (nF)
LOAD CURRENT (mA)
LOAD CAPACITANCE (nF)
10 ______________________________________________________________________________________
+5V-Powered, Multichannel RS-232
Drivers/Receivers
+3V
0V*
50%
50%
50%
+3V
INPUT
INPUT
0V
V
CC
OUTPUT
50%
GND
V+
0V
V-
OUTPUT
t
t
t
PLHR
PHLR
PHLS
t
PLHS
t
t
PLHT
PHLT
*EXCEPT FOR R2 ON THE MAX243
WHERE -3V IS USED.
Figure 1. Transmitter Propagation-Delay Timing
Figure 2. Receiver Propagation-Delay Timing
EN
1kΩ
R OUT
X
R
X
V
- 2V
R IN
X
CC
+3V
SHDN
a) TEST CIRCUIT
0V
150pF
0V
OUTPUT DISABLE TIME (t
)
DT
+3V
EN INPUT
V+
+5V
-5V
EN
OUTPUT ENABLE TIME (t
)
ER
0V
+3.5V
V-
RECEIVER
OUTPUTS
+0.8V
a) TIMING DIAGRAM
b) ENABLE TIMING
+3V
EN
0V
T
X
1 OR 0
EN INPUT
OUTPUT DISABLE TIME (t
)
DR
50pF
3kΩ
V
OH
V
- 0.5V
OH
RECEIVER
OUTPUTS
V
CC
- 2V
V
OL
+ 0.5V
b) TEST CIRCUIT
V
OL
c) DISABLE TIMING
Figure 3. Receiver-Output Enable and Disable Timing
______________________________________________________________________________________ 11
Figure 4. Transmitter-Output Disable Timing
+5V-Powered, Multichannel RS-232
Drivers/Receivers
Table 1a. MAX245 Control Pin Configurations
OPERATION STATUS
Normal Operation
Normal Operation
Shutdown
TRANSMITTERS
All Active
RECEIVERS
ENT
ENR
0
0
±
±
0
±
0
±
All Active
All 3-State
All Active
All 3-State
All Low-Power Receive Mode
All 3-State
Shutdown
All 3-State
Table 1b. MAX245 Control Pin Configurations
TRANSMITTERS
RECEIVERS
OPERATION
STATUS
ENT
ENR
TA1–TA4
TB1–TB4
RA1–RA5
All Active
RB1–RB5
All Active
0
0
0
±
Normal Operation
Normal Operation
All Active
All Active
RA±–RA4 3-State,
RA5 Active
RB±–RB4 3-State,
RB5 Active
All Active
All 3-State
All Active
All 3-State
All Low-Power
Receive Mode
All Low-Power
Receive Mode
±
±
0
±
Shutdown
Shutdown
RA±–RA4 3-State,
RA5 Low-Power
Receive Mode
RB±–RB4 3-State,
RB5 Low-Power
Receive Mode
All 3-State
All 3-State
Table 1c. MAX246 Control Pin Configurations
TRANSMITTERS
RECEIVERS
OPERATION
STATUS
ENA
ENB
TA1–TA4
TB1–TB4
RA1–RA5
All Active
RB1–RB5
0
0
0
±
Normal Operation
Normal Operation
All Active
All Active
All Active
RB±–RB4 3-State,
RB5 Active
All Active
All 3-State
All 3-State
All Active
All Active
RA±–RA4 3-State,
RA5 Active
±
±
0
±
Shutdown
Shutdown
All Active
RA±–RA4 3-State,
RA5 Low-Power
Receive Mode
RB±–RB4 3-State,
RA5 Low-Power
Receive Mode
All 3-State
All 3-State
12 ______________________________________________________________________________________
+5V-Powered, Multichannel RS-232
Drivers/Receivers
Table 1d. MAX247/MAX248/MAX249 Control Pin Configurations
TRANSMITTERS
RECEIVERS
RA1–RA4
MAX247 TA1–TA4 TB1–TB4
MAX248 TA1–TA4 TB1–TB4
MAX249 TA1–TA3 TB1–TB3
RB1–RB5
RB1–RB4
RB1–RB5
OPERATION
STATUS
ENTA ENTB ENRA ENRB
RA1–RA4
RA1–RA5
0
0
0
0
0
0
0
0
±
±
±
±
0
0
0
0
±
±
±
±
0
0
0
0
0
0
±
±
0
0
±
±
0
0
±
±
0
±
0
±
0
±
0
±
0
±
0
±
Normal Operation
Normal Operation
Normal Operation
Normal Operation
Normal Operation
Normal Operation
Normal Operation
Normal Operation
Normal Operation
Normal Operation
Normal Operation
Normal Operation
All Active All Active All Active
All Active
All 3-State, except
RB5 stays active on
MAX247
All Active All Active All Active
All Active All Active All 3-State
All Active All Active All 3-State
All Active All 3-State All Active
All Active All 3-State All Active
All Active All 3-State All 3-State
All Active All 3-State All 3-State
All 3-State All Active All Active
All 3-State All Active All Active
All 3-State All Active All 3-State
All 3-State All Active All 3-State
All Active
All 3-State, except
RB5 stays active on
MAX247
All Active
All 3-State, except
RB5 stays active on
MAX247
All Active
All 3-State, except
RB5 stays active on
MAX247
All Active
All 3-State, except
RB5 stays active on
MAX247
All Active
All 3-State, except
RB5 stays active on
MAX247
Low-Power
All 3-State All 3-State
Receive Mode
Low-Power
Receive Mode
±
±
±
±
±
±
±
±
0
0
±
±
0
±
0
±
Shutdown
Shutdown
Shutdown
Shutdown
All 3-State, except
RB5 stays active on
MAX247
Low-Power
All 3-State All 3-State
Receive Mode
Low-Power
Receive Mode
All 3-State All 3-State All 3-State
All 3-State All 3-State All 3-State
All 3-State, except
RB5 stays active on
MAX247
______________________________________________________________________________________ 13
+5V-Powered, Multichannel RS-232
Drivers/Receivers
mode, in three-state mode, or when device power is
_______________Detailed Description
removed. Outputs can be driven to ±±5V. The power-
supply current typically drops to 8µA in shutdown mode.
The MAX220 does not have pull-up resistors to force the
outputs of the unused drivers low. Connect unused
The MAX220–MAX249 contain four sections: dual
charge-pump DC-DC voltage converters, RS-232 dri-
vers, RS-232 receivers, and receiver and transmitter
enable control inputs.
inputs to GND or V
.
CC
Dual Charge-Pump Voltage Converter
The MAX220–MAX249 have two internal charge-pumps
that convert +5V to ±±0V (unloaded) for RS-232 driver
operation. The first converter uses capacitor C± to dou-
ble the +5V input to +±0V on C3 at the V+ output. The
second converter uses capacitor C2 to invert +±0V to
-±0V on C4 at the V- output.
The MAX239 has a receiver three-state control line, and
the MAX223, MAX225, MAX235, MAX236, MAX240,
and MAX24± have both a receiver three-state control
line and a low-power shutdown control. Table 2 shows
the effects of the shutdown control and receiver three-
state control on the receiver outputs.
The receiver TTL/CMOS outputs are in a high-imped-
ance, three-state mode whenever the three-state enable
line is high (for the MAX225/MAX235/MAX236/MAX239–
MAX24±), and are also high-impedance whenever the
shutdown control line is high.
A small amount of power may be drawn from the +±0V
(V+) and -±0V (V-) outputs to power external circuitry
(see the Typical Operating Characteristics section),
except on the MAX225 and MAX245–MAX247, where
these pins are not available. V+ and V- are not regulated,
so the output voltage drops with increasing load current.
Do not load V+ and V- to a point that violates the mini-
mum ±5V EIA/TIA-232E driver output voltage when
sourcing current from V+ and V- to external circuitry.
When in low-power shutdown mode, the driver outputs
are turned off and their leakage current is less than ±µA
with the driver output pulled to ground. The driver output
leakage remains less than ±µA, even if the transmitter
output is backdriven between 0V and (V
+ 6V). Below
CC
When using the shutdown feature in the MAX222,
MAX225, MAX230, MAX235, MAX236, MAX240,
MAX24±, and MAX245–MAX249, avoid using V+ and V-
to power external circuitry. When these parts are shut
down, V- falls to 0V, and V+ falls to +5V. ꢁor applica-
tions where a +±0V external supply is applied to the V+
pin (instead of using the internal charge pump to gen-
erate +±0V), the C± capacitor must not be installed and
-0.5V, the transmitter is diode clamped to ground with
±kΩ series impedance. The transmitter is also zener
clamped to approximately V
impedance of ±kΩ.
+ 6V, with a series
CC
The driver output slew rate is limited to less than 30V/µs
as required by the EIA/TIA-232E and V.28 specifica-
tions. Typical slew rates are 24V/µs unloaded and
±0V/µs loaded with 3Ω and 2500pꢁ.
the SHDN pin must be tied to V . This is because V+
CC
is internally connected to V
in shutdown mode.
CC
RS-232 Receivers
EIA/TIA-232E and V.28 specifications define a voltage
level greater than 3V as a logic 0, so all receivers invert.
Input thresholds are set at 0.8V and 2.4V, so receivers
respond to TTL level inputs as well as EIA/TIA-232E and
V.28 levels.
RS-232 Drivers
The typical driver output voltage swing is ±8V when
loaded with a nominal 5kΩ RS-232 receiver and V
=
CC
+5V. Output swing is guaranteed to meet the EIA/TIA-
232E and V.28 specification, which calls for ±5V mini-
mum driver output levels under worst-case conditions.
The receiver inputs withstand an input overvoltage up
to ±25V and provide input terminating resistors with
These include a minimum 3kΩ load, V
= +4.5V, and
CC
maximum operating temperature. Unloaded driver out-
put voltage ranges from (V+ -±.3V) to (V- +0.5V).
Table 2. Three-State Control of Receivers
Input thresholds are both TTL and CMOS compatible.
The inputs of unused drivers can be left unconnected
PART
SHDN
EN
EN(R)
RECEIVERS
SHDN
Low
X
High Impedance
Active
High Impedance
since 400kΩ input pull-up resistors to V
are built in
CC
MAX223
__
High Low
High High
__
(except for the MAX220). The pull-up resistors force the
outputs of unused drivers low because all drivers invert.
The internal input pull-up resistors typically source ±2µA,
except in shutdown mode where the pull-ups are dis-
abled. Driver outputs turn off and enter a high-imped-
ance state—where leakage current is typically
microamperes (maximum 25µA)—when in shutdown
Low
High
High Impedance
Active
MAX225
__
__
__
__
__
MAX235 Low
MAX236 Low
MAX240 High
Low
High
X
High Impedance
Active
High Impedance
14 ______________________________________________________________________________________
+5V-Powered, Multichannel RS-232
Drivers/Receivers
nominal 5kΩ values. The receivers implement Type ±
Shutdown—MAX222–MAX242
On the MAX222F MAX235F MAX236F MAX240F and
MAX24±F all receivers are disabled during shutdown.
On the MAX223 and MAX242F two receivers continue to
operate in a reduced power mode when the chip is in
shutdown. Under these conditionsF the propagation
delay increases to about 2.5µs for a high-to-low input
transition. When in shutdown, the receiver acts as a
CMOS inverter with no hysteresis. The MAX223 and
MAX242 also have a receiver output enable input (EN
for the MAX242 and EN for the MAX223) that allows
receiver output control independent of SHDN (SHDN
for MAX24±). With all other devicesF SHDN (SHDN for
MAX24±) also disables the receiver outputs.
interpretation of the fault conditions of V.28 and
EIA/TIA-232E.
The receiver input hysteresis is typically 0.5V with a
guaranteed minimum of 0.2V. This produces clear out-
put transitions with slow-moving input signals, even
with moderate amounts of noise and ringing. The
receiver propagation delay is typically 600ns and is
independent of input swing direction.
Low-Power Receive Mode
The low-power receive-mode feature of the MAX223,
MAX242, and MAX245–MAX249 puts the IC into shut-
down mode but still allows it to receive information. This
is important for applications where systems are periodi-
cally awakened to look for activity. Using low-power
receive mode, the system can still receive a signal that
will activate it on command and prepare it for communi-
cation at faster data rates. This operation conserves
system power.
The MAX225 provides five transmitters and five
receiversF while the MAX245 provides ten receivers and
eight transmitters. Both devices have separate receiver
and transmitter-enable controls. The charge pumps
turn off and the devices shut down when a logic high is
applied to the ENT input. In this state, the supply cur-
rent drops to less than 25µA and the receivers continue
to operate in a low-power receive mode. Driver outputs
enter a high-impedance state (three-state mode). On
the MAX225F all five receivers are controlled by the
ENR input. On the MAX245F eight of the receiver out-
puts are controlled by the ENR inputF while the remain-
ing two receivers (RA5 and RB5) are always active.
RA±–RA4 and RB±–RB4 are put in a three-state mode
when ENR is a logic high.
Negative Threshold—MAX243
The MAX243 is pin compatible with the MAX232A, differ-
ing only in that RS-232 cable fault protection is removed
on one of the two receiver inputs. This means that control
lines such as CTS and RTS can either be driven or left
floating without interrupting communication. Different
cables are not needed to interface with different pieces of
equipment.
The input threshold of the receiver without cable fault
protection is -0.8V rather than +±.4V. Its output goes
positive only if the input is connected to a control line
that is actively driven negative. If not driven, it defaults
to the 0 or “OK to send” state. NormallyF the MAX243’s
other receiver (+±.4V threshold) is used for the data line
(TD or RD)F while the negative threshold receiver is con-
nected to the control line (DTRF DTSF CTSF RTS, etc.).
Receiver and Transmitter Enable
Control Inputs
The MAX225 and MAX245–MAX249 feature transmitter
and receiver enable controls.
The receivers have three modes of operation: full-speed
receive (normal active)F three-state (disabled)F and low-
power receive (enabled receivers continue to function
at lower data rates). The receiver enable inputs control
the full-speed receive and three-state modes. The
transmitters have two modes of operation: full-speed
transmit (normal active) and three-state (disabled). The
transmitter enable inputs also control the shutdown
mode. The device enters shutdown mode when all
transmitters are disabled. Enabled receivers function in
the low-power receive mode when in shutdown.
Other members of the RS-232 family implement the
optional cable fault protection as specified by EIA/TIA-
232E specifications. This means a receiver output goes
high whenever its input is driven negativeF left floatingF
or shorted to ground. The high output tells the serial
communications IC to stop sending data. To avoid thisF
the control lines must either be driven or connected
with jumpers to an appropriate positive voltage level.
______________________________________________________________________________________ 15
+5V-Powered, Multichannel RS-232
Drivers/Receivers
Tables ±a–±d define the control states. The MAX244
has no control pins and is not included in these tables.
The MAX249 provides ten receivers and six drivers with
four control pins. The ENRA and ENRB receiver enable
inputs each control five receiver outputs. The ENTA
and ENTB transmitter enable inputs control three dri-
vers each. There is no always-active receiver. The
device enters shutdown mode and transmitters go into
a three-state mode with a logic high on both ENTA and
ENTB. In shutdown mode, active receivers operate in a
low-power receive mode at data rates up to 20kb/s.
The MAX246 has ten receivers and eight drivers with
two control pins, each controlling one side of the
device. A logic high at the A-side control input (ENA)
causes the four A-side receivers and drivers to go into
a three-state mode. Similarly, the B-side control input
(ENB) causes the four B-side drivers and receivers to
go into a three-state mode. As in the MAX245, one A-
side and one B-side receiver (RA5 and RB5) remain
active at all times. The entire device is put into shut-
down mode when both the A and B sides are disabled
(ENA = ENB = +5V).
__________Applications Information
ꢁigures 5 through 25 show pin configurations and typi-
cal operating circuits. In applications that are sensitive
to power-supply noise, V
ground with a capacitor of the same value as C± and
C2 connected as close as possible to the device.
should be decoupled to
CC
The MAX247 provides nine receivers and eight drivers
with four control pins. The ENRA and ENRB receiver
enable inputs each control four receiver outputs. The
ENTA and ENTB transmitter enable inputs each control
four drivers. The ninth receiver (RB5) is always active.
The device enters shutdown mode with a logic high on
both ENTA and ENTB.
The MAX248 provides eight receivers and eight drivers
with four control pins. The ENRA and ENRB receiver
enable inputs each control four receiver outputs. The
ENTA and ENTB transmitter enable inputs control four
drivers each. This part does not have an always-active
receiver. The device enters shutdown mode and trans-
mitters go into a three-state mode with a logic high on
both ENTA and ENTB.
16 ______________________________________________________________________________________
+5V-Powered, Multichannel RS-232
Drivers/Receivers
+5V INPUT
C3
TOP VIEW
C5
16
V
1
CC
2
C1+
V+
V
1
2
3
4
5
6
7
8
CC
16
15
14
13
12
11
10
9
C1+
C1-
+10V
V+
V-
+5V TO +10V
VOLTAGE DOUBLER
C1
C2
3
4
GND
T1
6
-10V
C4
C2+
C2-
+10V TO -10V
VOLTAGE INVERTER
C1-
OUT
5
R1
R1
T1
C2+
C2-
V-
MAX220
MAX232
MAX232A
IN
+5V
400kΩ
OUT
T1
IN
T1
11
14
OUT
IN
IN
+5V
TTL/CMOS
INPUTS
RS-232
OUTPUTS
T2
T2
R2
OUT
400kΩ
IN
T2
T2
7
R2
10
12
OUT
OUT
IN
DIP/SO
R1
R2
R1
I
N
13
OUT
OUT
TTL/CMOS
OUTPUTS
RS-232
INPUTS
5kΩ
CAPACITANCE (µF)
DEVICE
C1 C2 C3 C4 C5
8
9
R2
IN
MAX220 0.047 0.33 0.33 0.33 0.33
MAX232 1.0 1.0 1.0 1.0 1.0
MAX232A 0.1 0.1 0.1 0.1 0.1
5kΩ
GND
15
Figure 5. MAX220/MAX232/MAX232A Pin Configuration and Typical Operating Circuit
+5V INPUT
17
C3
TOP VIEW
ALL CAPACITORS = 0.1µF
C5
V
2
CC
3
7
+10V
C1+
+5V TO +10V
VOLTAGE DOUBLER
V+
V-
C1
4
5
(N.C.) EN
C1+
SHDN
C1-
1
2
20
19
18
17
16
15
14
13
12
11
C2+
C2-
-10V
C4
(N.C.) EN
C1+
SHDN
V
CC
1
2
3
4
5
6
7
8
9
18
17
16
15
14
13
12
11
10
+10V TO -10V
VOLTAGE INVERTER
C2
6
V+
V
CC
GND
3
+5V
400kΩ
12 T1
C1-
V+
GND
T1
4
OUT
(EXCEPT MAX220)
C1-
MAX222
MAX242
C2+
C2-
V-
T1
N.C.
5
OUT
T1
15
IN
+5V
400kΩ
OUT
MAX222
MAX242
C2+
C2-
V-
R1
IN
R1
IN
6
TTL/CMOS
INPUTS
RS-232
(EXCEPT MAX220)
R1
OUTPUTS
R1
7
OUT
OUT
11 T2
T2
8
IN
OUT
T2
OUT
T1
IN
N.C.
8
T2
R2
IN
OUT
T1
IN
T2
IN
9
13 R1
R1
14
OUT
IN
R2
IN
R2
R2
OUT
T2
IN
OUT
10
TTL/CMOS
OUTPUTS
RS-232
INPUTS
5kΩ
10
1
R2
R2
9
IN
OUT
DIP/SO
SSOP
(N.C.)
5kΩ
SHDN
EN
18
( ) ARE FOR MAX222 ONLY.
PIN NUMBERS IN TYPICAL OPERATING CIRCUIT ARE FOR DIP/SO PACKAGES ONLY.
GND
16
Figure 6. MAX222/MAX242 Pin Configurations and Typical Operating Circuit
______________________________________________________________________________________ 17
+5V-Powered, Multichannel RS-232
Drivers/Receivers
+5V
TOP VIEW
0.1
28
CC
27
CC
V
V
+5V
400kΩ
T IN
1
3
4
11
12
18
17
T OUT
1
+5V
+5V
ENR
ENR
V
V
1
2
CC
28
27
26
25
24
400kΩ
400kΩ
400kΩ
400kΩ
CC
T IN
2
T IN
1
ENT
3
T OUT
2
T IN
2
T IN
3
4
T IN
3
MAX225
R OUT
1
T IN
4
5
25
24
T OUT
3
+5V
+5V
R OUT
2
23 T IN
6
5
R OUT
3
R OUT
22
7
4
T IN
4
R IN
3
T OUT
4
21 R OUT
5
8
R IN
2
R IN
9
20
19
18
17
5
T OUT
5
T IN
5
R IN
1
R IN
4
10
11
12
13
14
23
26
16
15
T OUT
1
T OUT
3
ENT
T OUT
2
T OUT
5
T OUT
4
R OUT
1
R IN
1
GND
GND
T OUT
5
16
15
5
10
T OUT
5
5kΩ
R IN
R OUT
2
2
SO
6
7
9
8
5kΩ
R IN
R OUT
3
3
MAX225 FUNCTIONAL DESCRIPTION
5 RECEIVERS
5kΩ
R IN
5 TRANSMITTERS
R OUT
4
4
22
21
19
20
2 CONTROL PINS
5kΩ
R IN
1 RECEIVER ENABLE (ENR)
1 TRANSMITTER ENABLE (ENT)
R OUT
5
5
5kΩ
ENR
ENR
1
2
PINS (ENR, GND, V , T OUT) ARE INTERNALLY CONNECTED.
CONNECT EITHER OR BOTH EXTERNALLY. T OUT IS A SINGLE DRIVER.
5
GND
14
CC
5
GND
13
Figure 7. MAX225 Pin Configuration and Typical Operating Circuit
18 ______________________________________________________________________________________
+5V-Powered, Multichannel RS-232
Drivers/Receivers
+5V INPUT
TOP VIEW
1.0µF
11
1.0µF
1.0µF
12
V
C1+
CC
13
17
V+
V-
+5V TO +10V
VOLTAGE DOUBLER
1.0µF
1.0µF
14
15
C1-
C2+
+10V TO -10V
VOLTAGE INVERTER
16
C2-
+5V
400kΩ
T1
T2
T1
7
2
3
1
OUT
IN
T1
T3
1
2
3
4
5
6
7
8
9
28 T4
27 R3
26 R3
+5V
OUT
OUT
OUT
OUT
400kΩ
T1
T2
IN
6
T2
T3
OUT
IN
T2
OUT
+5V
R2
25 SHDN (SHDN)
24 EN (EN)
IN
RS-232
OUTPUTS
TTL/CMOS
INPUTS
400kΩ
R2
OUT
MAX223
MAX241
T3
OUT
20
IN
T3
T2
23 R4
22 R4
IN
IN*
OUT*
IN
+5V
T1
IN
400kΩ
R1
OUT
21 T4
20 T3
19 R5
18 R5
17 V-
T4
T4
R1
21
8
28
9
OUT
IN
T4
R1
IN
IN
GND 10
11
OUT*
IN*
R1
IN
OUT
R1
R2
V
CC
5kΩ
R2
5kΩ
C1+ 12
V+ 13
16 C2-
15 C2+
R2
R3
5
IN
4
OUT
C1- 14
Wide SO/
SSOP
26
R3
27
23
RS-232
INPUTS
OUT
OUT
OUT
IN
LOGIC
OUTPUTS
R3
R4
R5
5kΩ
22 R4
R4
IN
5kΩ
R5
5kΩ
R5
19
24
18
25
IN
*R4 AND R5 IN MAX223 REMAIN ACTIVE IN SHUTDOWN
SHDN
(SHDN)
NOTE: PIN LABELS IN ( ) ARE FOR MAX241
EN (EN)
GND
10
Figure 8. MAX223/MAX241 Pin Configuration and Typical Operating Circuit
______________________________________________________________________________________ 19
+5V-Powered, Multichannel RS-232
Drivers/Receivers
+5V INPUT
1.0µF
TOP VIEW
7
1.0µF
1.0µF
8
V
9
CC
C1+
C1-
V+
V-
+5V TO +10V
10
1.0µF
1.0µF
VOLTAGE DOUBLER
11
12
T3
T4
T5
OUT
1
2
OUT
20
19
18
17
16
15
14
13
12
11
C2+
C2-
+10V TO -10V
VOLTAGE INVERTER
13
T1
T2
OUT
IN
+5V
OUT
N.C.
3
400kΩ
T1
400kΩ
T2
T2
IN
SHDN
4
5 T1
T1
T2
T3
T4
T5
2
IN
IN
OUT
MAX230
T1
T5
+5V
+5V
IN
5
OUT
GND
T4
IN
6
T2
4
14
15
OUT 3
OUT 1
OUT 20
V
T3
IN
CC
7
400kΩ
T3
400kΩ
T4
400kΩ
T5
C1+
V+
V-
8
T3
T4
TTL/CMOS
INPUTS
RS-232
OUTPUTS
IN
IN
C2-
C2+
9
+5V
+5V
C1-
10
DIP/SO
T5
19
18
16
17
OUT
IN
N.C.x
SHDN
GND
6
Figure 9. MAX230 Pin Configuration and Typical Operating Circuit
+5V INPUT
TOP VIEW
+7.5V TO +12V
1.0µF
13 (15)
1
2
14
3
(16)
V
CC
C1+
C1-
V+
V-
+12V TO -12V
VOLTAGE CONVERTER
1.0µF
C2
1.0µF
+5V
C+
V+
V
1
2
3
4
5
6
7
8
C+
C-
V-
1
2
3
4
5
6
7
14 V+
13
16
400kΩ
(10)
(11)
(13)
(12)
C-
V-
V
15 CC
CC
T1
T2
11
T1
OUT
8
IN
T1
GND
14
12 GND
11 T1
+5V
TTL/CMOS
INPUTS
RS-232
OUTPUTS
T1
13
T2
R2
MAX231
T2
R2
MAX231
OUT
OUT
OUT
OUT
400kΩ
R1
R1
T1
R2
R2
10 R1
12
11
10
9
IN
IN
4
IN
IN
T2
IN
7
OUT
T2
9
8
R1
T1
OUT
OUT
OUT
OUT
R1
10
R1
9
OUT
IN
R1
T2
IN
T2
IN
IN
IN
TTL/CMOS
OUTPUTS
N.C.
5kΩ
RS-232
INPUTS
N.C.
DIP
R2
R2
5
SO
OUT
6
IN
R2
5kΩ
GND
PIN NUMBERS IN ( ) ARE FOR SO PACKAGE
12 (14)
Figure 10. MAX231 Pin Configurations and Typical Operating Circuit
20 ______________________________________________________________________________________
+5V-Powered, Multichannel RS-232
Drivers/Receivers
+5V INPUT
1.0µF
TOP VIEW
7
V
CC
+5V
+5V
400kΩ
400kΩ
T1
T2
5
T1
OUT
OUT
2
1
IN
T2
R2
R2
IN
1
2
OUT
20
19
18
17
16
15
14
13
12
11
T1
TTL/CMOS
INPUTS
IN
IN
RS-232
OUTPUTS
R1
T1
OUT
T2
V-
3
OUT
18
4
T2
IN
R1
IN
4
R1
OUT
R1
IN
3
MAX233
MAX233A
C2-
OUT
5
5kΩ
5kΩ
GND
TTL/CMOS
OUTPUTS
C2+
6
RS-232
INPUTS
V
CC
V+ (C1-)
C1- (C1+)
V- (C2+)
C2+ (C2-)
7
R2
R2 19
OUT
20
IN
(V+) C1+
GND
8
8 (13)
11 (12)
9
C1+
DO NOT MAKE
CONNECTIONS TO
THESE PINS
C2+
13 (14)
12 (10)
15
16
(V-) CS-
10
C1-
V-
C2+
C2-
INTERNAL -10
17
10 (11)
POWER SUPPLY
DIP/SO
V-
C2-
14 (8)
INTERNAL +10V
POWER SUPPLY
V+
GND
6
GND
9
( ) ARE FOR SO PACKAGE ONLY.
Figure 11. MAX233/MAX233A Pin Configuration and Typical Operating Circuit
+5V INPUT
6
1.0µF
TOP VIEW
1.0µF
7
V
8
C1+
CC
+5V TO +10V
VOLTAGE DOUBLER
V+
1.0µF
1.0µF
9
C1-
C2+
10
+10V TO -10V
VOLTAGE INVERTER
12
V-
11
C2-
1.0µF
T1
T2
T3
T4
T4
T3
V-
OUT
OUT
1
2
3
4
5
6
7
8
OUT
OUT
IN
16
15
14
13
12
11
10
9
+5V
400kΩ
400kΩ
T2
IN
IN
T1
IN
T1
4
3
1
OUT
OUT
OUT
T1
T2
T3
T4
T1
MAX234
IN
+5V
GND
T2
IN
T3
IN
IN
T2
T3
3
V
C2-
C2+
C1-
CC
+5V
+5V
RS-232
OUTPUTS
C1+
V+
TTL/CMOS
INPUTS
400kΩ
13
16
15
DIP/SO
400kΩ
14 T4
T4
OUT
GND
5
Figure 12. MAX234 Pin Configuration and Typical Operating Circuit
______________________________________________________________________________________ 21
+5V-Powered, Multichannel RS-232
Drivers/Receivers
+5V INPUT
TOP VIEW
1.0µF
12
V
CC
+5V
400kΩ
T1
T1
8
3
OUT
IN
T1
+5V
+5V
+5V
+5V
400kΩ
400kΩ
400kΩ
400kΩ
T2
T2
T3
T4
OUT
7
15
16
4
IN
IN
IN
IN
T2
T3
T4
T3
2
1
TTL/CMOS
INPUTS
OUT
RS-232
OUTPUTS
T4
T3
T1
T2
1
2
3
4
5
6
7
8
9
24 R3
23 R3
OUT
OUT
OUT
OUT
IN
OUT
IN
T4
OUT
OUT
22 T5
21 SHDN
20 EN
MAX235
R2
IN
T5
22 T5
19
10
T5
T1
R2
19 T5
18 R4
17 R4
OUT
OUT
IN
T2
IN
IN
R1
9
R1
IN
IN
OUT
T1
OUT
IN
5kΩ
R1
16 T4
15 T3
14 R5
13 R5
OUT
R1 10
IN
IN
R2
5kΩ
R3 24
5
R2
R3
R4
6
OUT
OUT
OUT
OUT
R2
GND 11
OUT
IN
V
12
CC
23
IN
TTL/CMOS
OUTPUTS
RS-232
INPUTS
R3
R4
DIP
5kΩ
R4
18
17
IN
5kΩ
R5
R5
13
21
14
20
IN
R5
5kΩ
SHDN
EN
GND
11
Figure 13. MAX235 Pin Configuration and Typical Operating Circuit
22 ______________________________________________________________________________________
+5V-Powered, Multichannel RS-232
Drivers/Receivers
TOP VIEW
+5V INPUT
1.0µF
9
1.0µF
1.0µF
10
11
15
C1+
V
CC
V+
V-
+5V TO +10V
VOLTAGE DOUBLER
1.0µF
1.0µF
12
13
C1-
C2+
+10V TO -10V
VOLTAGE INVERTER
14
C2-
+5V
400kΩ
T1
OUT
T1
7
2
IN
T1
T3
T1
T2
1
2
3
4
5
6
7
8
9
24 T4
23 R2
22 R2
OUT
OUT
OUT
OUT
+5V
+5V
+5V
400kΩ
IN
T2
T2
T3
OUT
6
3
1
IN
IN
IN
T2
OUT
TTL/CMOS
INPUTS
R1
21 SHDN
20 EN
RS-232
OUTPUTS
IN
400kΩ
MAX236
R1
OUT
T3
T4
18
OUT
T3
T2
19 T4
18 T3
IN
IN
IN
IN
T1
400kΩ
GND
17 R3
16 R3
15 V-
OUT
IN
24
4
19 T4
OUT
T4
V
CC
C1+ 10
V+ 11
14 C2-
13 C2+
R1
5
R1
IN
OUT
OUT
OUT
R1
C1- 12
5kΩ
DIP/SO
22
23
R2
R2
IN
RS-232
INPUTS
TTL/CMOS
OUTPUTS
R2
R3
5kΩ
R3
R3
16
21
17
20
IN
5kΩ
SHDN
EN
GND
8
Figure 14. MAX236 Pin Configuration and Typical Operating Circuit
______________________________________________________________________________________ 23
+5V-Powered, Multichannel RS-232
Drivers/Receivers
TOP VIEW
+5V INPUT
1.0µF
1.0µF
1.0µF
9
10
V
11
15
CC
C1+
V+
V-
+5V TO +10V
VOLTAGE DOUBLER
1.0µF
1.0µF
12
13
C1-
C2+
+10V TO -10V
VOLTAGE INVERTER
14
C2-
+5V
+5V
+5V
+5V
400kΩ
T1
T3
T1
T2
1
2
3
4
5
6
7
8
9
24 T4
23 R2
22 R2
T1
T1
7
2
OUT
OUT
OUT
OUT
OUT
IN
IN
400kΩ
OUT
IN
T2
OUT
T2
T3
6
3
1
IN
IN
T2
R1
21 T5
20 T5
19 T4
18 T3
17 R3
16 R3
15 V-
IN
MAX237
R1
OUT
OUT
IN
400kΩ
T2
IN
T3
18
OUT
TTL/CMOS
INPUTS
RS-232
OUTPUTS
T3
T1
IN
IN
400kΩ
GND
OUT
IN
T4
T5
24
20
4
19 T4
21 T5
OUT
IN
V
T4
CC
+5V
C1+ 10
V+ 11
400kΩ
14 C2-
13 C2+
OUT
IN
T5
C1- 12
DIP/SO
5
R1
R1
IN
OUT
OUT
OUT
R1
5kΩ
22
R2
R2
R3
23
16
IN
RS-232
INPUTS
TTL/CMOS
OUTPUTS
R2
R3
5kΩ
R3
17
IN
5kΩ
GND
8
Figure 15. MAX237 Pin Configuration and Typical Operating Circuit
24 ______________________________________________________________________________________
+5V-Powered, Multichannel RS-232
Drivers/Receivers
TOP VIEW
+5V INPUT
1.0µF
9
1.0µF
1.0µF
10
V
CC
11
15
C1+
V+
V-
+5V TO +10V
VOLTAGE DOUBLER
1.0µF
1.0µF
12
13
C1-
C2+
+10V TO -10V
VOLTAGE INVERTER
14
C2-
+5V
400kΩ
T1
T1
T1
5
18
19
2
T2
T1
1
2
3
4
5
6
7
8
9
24 T3
23 R3
22 R3
OUT
IN
OUT
OUT
+5V
+5V
OUT
IN
400kΩ
R2
IN
OUT
IN
T2
OUT
T2
IN
T3
IN
1
T2
R2
OUT
21 T4
20 T4
19 T3
18 T2
17 R4
16 R4
15 V-
TTL/CMOS
INPUTS
RS-232
OUTPUTS
MAX238
T1
IN
OUT
IN
400kΩ
R1
OUT
T3
OUT
24
T3
400kΩ
T4
R1
IN
IN
+5V
GND
OUT
IN
T4
20
V
21 T4
OUT
CC
IN
C1+ 10
V+ 11
14 C2-
13 C2+
R1
C1- 12
6
4
R1
IN
7
3
OUT
R1
R2
5kΩ
R2
DIP/SO
R2
OUT
IN
TTL/CMOS
OUTPUTS
5kΩ
R3
RS-232
INPUTS
R3
R4
23
16
22
17
OUT
OUT
IN
IN
R3
R4
5kΩ
R4
5kΩ
GND
8
Figure 16. MAX238 Pin Configuration and Typical Operating Circuit
______________________________________________________________________________________ 25
+5V-Powered, Multichannel RS-232
Drivers/Receivers
TOP VIEW
7.5V TO 13.2V
INPUT
+5V INPUT
1.0µF
4
5
V
V+
CC
6
8
C1+
V-
+10V TO -10V
VOLTAGE INVERTER
1.0µF
7
1.0µF
C1-
+5V
+5V
400kΩ
T1
400kΩ
T2
T1
T1
24
23
19
20
OUT
IN
R1
1
2
24 T1
23 T2
OUT
IN
R1
IN
IN
T2
OUT
T2
T3
IN
TTL/CMOS
INPUTS
RS-232
OUTPUTS
GND
3
22 R2
21 R2
20 T2
19 T1
18 R3
17 R3
OUT
+5V
V
4
CC
IN
400kΩ
T3
MAX239
V+
5
OUT
OUT
IN
T3
13
2
16
1
OUT
IN
C+
C-
V-
6
7
8
OUT
IN
R1
R1
IN
OUT
R1
R2
R3
R5
9
16 T3
IN
OUT
OUT
5kΩ
R5
R4
10
11
15 N.C.
14 EN
R2
5kΩ
R3
22 R2
IN
21
18
12
OUT
R4 12
13 T3
OUT
IN
DIP/SO
17
R3
OUT
IN
RS-232
INPUTS
TTL/CMOS
OUTPUTS
5kΩ
R4
11 R4
OUT
IN
R4
R5
5kΩ
R5
R5
EN
10
14
9
OUT
IN
5kΩ
15
N.C.
GND
3
Figure 17. MAX239 Pin Configuration and Typical Operating Circuit
26 ______________________________________________________________________________________
+5V-Powered, Multichannel RS-232
Drivers/Receivers
+5V INPUT
1.0µF
TOP VIEW
19
1.0µF
1.0µF
25
V
C1+
CC
26
30
V+
V-
+5V TO +10V
VOLTAGE DOUBLER
1.0µF
1.0µF
27
28
C1-
C2+
+5V TO -10V
VOLTAGE INVERTER
29
C2-
+5V
400kΩ
T1
T1
15
7
OUT
OUT
IN
T1
+5V
400kΩ
T2
T2
14 T2
8
6
IN
+5V
400kΩ
T3
T3
T3
IN
RS-232
OUTPUTS
37
OUT
TTL/CMOS
INPUTS
+5V
400kΩ
N.C.
R2
12
13
14
15
16
17
18
19
20
21
22
44
43
42
41
40
39
38
37
36
35
34
N.C.
SHDN
EN
T4
T5
T4
T5
38
2
5
OUT
IN
T4
OUT
+5V
T2
IN
IN
400kΩ
T1
R1
T5
OUT
41
IN
OUT
R4
R4
OUT
IN
T5
R1
IN
OUT
IN
MAX240
GND
T4
T3
R1
16 R1
IN 17
OUT
OUT
R1
V
CC
IN
5kΩ
N.C.
N.C.
N.C.
R5
R5
OUT
IN
N.C.
R2
13 R2
IN
10
4
R2
5kΩ
R3
3
R3
RS-232
INPUTS
OUT
OUT
OUT
IN
TTL/CMOS
OUTPUTS
R3
R4
R5
5kΩ
Plastic FP
39 R4
R4
40
IN
5kΩ
R5
R5
36
35
43
IN
5kΩ
SHDN
42 EN
GND
18
Figure 18. MAX240 Pin Configuration and Typical Operating Circuit
______________________________________________________________________________________ 27
+5V-Powered, Multichannel RS-232
Drivers/Receivers
+5V INPUT
16
ALL CAPACITORS = 0.1µF
0.1µF
TOP VIEW
0.1µF
1
V
CC
C1+
2
6
+10V
-10V
+5V TO +10V
VOLTAGE DOUBLER
V+
V-
0.1µF
0.1µF
3
4
C1-
C2+
C1+
V+
1
2
3
4
5
6
7
8
16
V
CC
+10V TO -10V
VOLTAGE INVERTER
5
C2-
15 GND
0.1µF
+5V
C1-
C2+
C2-
V-
14 T1
13 R1
12 R1
OUT
400kΩ
400kΩ
MAX243
IN
T1
IN
T1
T2
11
14
OUT
OUT
IN
+5V
11 T1
10 T2
TTL/CMOS
INPUTS
RS-232
OUTPUTS
T2
OUT
IN
T2
IN
7
10
12
OUT
R2
IN
9
R2
OUT
DIP/SO
R1
OUT
R1
IN
13
TTL/CMOS
OUTPUTS
RS-232
INPUTS
5kΩ
R2
OUT
8
9
R2
IN
RECEIVER INPUT R1 OUTPUT R2 OUTPUT
5kΩ
≤ -3 V
OPEN
≥ +3V
HIGH
HIGH
LOW
HIGH
LOW
LOW
GND
15
Figure 19. MAX243 Pin Configuration and Typical Operating Circuit
28 ______________________________________________________________________________________
+5V-Powered, Multichannel RS-232
Drivers/Receivers
+5V
1µF
TOP VIEW
1µF
20
21
V
22
C1+
C1-
CC
1µF
1µF
23
24
V+
V-
+5V TO +10V VOLTAGE DOUBLER
26
C2+
C2-
1µF
25
+10V TO -10V VOLTAGE INVERTER
43
42 41 40
6
5
4
3
2
1
44
+5V
+5V
+5V
+5V
2 T OUT
T
OUT 44
A1
B1
T
400kΩ
400kΩ
15 T IN
IN 30
B1
A1
R
R
R
IN
IN
IN
7
8
9
39
38
37
36
35
34
33
32
31
30
29
R
R
R
R
R
R
R
R
R
IN
A3
A2
A1
B4
B3
B2
B1
B1
B2
B3
B4
B5
IN
2 T OUT
T
OUT 43
A2
B2
T
IN
R
R
R
R
R
OUT 10
OUT 11
OUT 12
OUT 13
OUT 14
IN
A1
A2
A3
A4
16 T IN
A2
IN 29
B2
OUT
OUT
OUT
OUT
OUT
MAX244
+5V
+5V
+5V
+5V
3 T OUT
A3
T
T
OUT 42
B3
400kΩ
400kΩ
17 T IN
T
IN 28
B3
A3
A5
T
IN 15
IN 16
IN 17
A1
A2
A3
4 T OUT
OUT 41
A4
B4
T
T
T
T
IN
IN
B1
B2
18 T IN
T
IN 27
IN 36
A4
B4
B1
9 R IN
R
A1
18 19 20 21 22 23 24 25 26 27 28
5kΩ
10 R OUT
5kΩ
PLCC
R
OUT 35
A1
B1
R
8 R IN
IN 37
B2
A2
5kΩ
11 R OUT
5kΩ
MAX249 FUNCTIONAL DESCRIPTION
10 RECEIVERS
R
OUT 34
A2
B2
R
5 A-SIDE RECEIVER
7 R IN
IN 38
B3
A3
5 B-SIDE RECEIVER
8 TRANSMITTERS
5kΩ
5kΩ
4 A-SIDE TRANSMITTERS
4 B-SIDE TRANSMITTERS
NO CONTROL PINS
12 R OUT
A3
R
OUT 33
B3
6 R IN
A4
R
IN 39
B4
5kΩ
13 R OUT
5kΩ
R
OUT 32
A4
B4
R
5 R IN
IN 40
B5
A5
5kΩ
14 R OUT
5kΩ
R
OUT 31
B5
A5
GND
19
Figure 20. MAX244 Pin Configuration and Typical Operating Circuit
______________________________________________________________________________________ 29
+5V-Powered, Multichannel RS-232
Drivers/Receivers
+5V
TOP VIEW
1µF
40
V
CC
+5V
+5V
+5V
+5V
16 T OUT
T
T
OUT 24
A1
B1
T
ENR
1
2
3
4
5
6
7
8
9
40
V
CC
400kΩ
400kΩ
T
T
T
IN
IN
IN
39 ENT
A1
A2
A3
2 T IN
IN 38
B1
A1
38
37
36
35
34
33
32
31
T
T
T
T
IN
IN
IN
IN
B1
B2
B3
B4
17 T OUT
OUT 23
A2
B2
T
T
IN
A4
3 T IN
IN 37
B2
A2
R
OUT
OUT
OUT
OUT
A5
+5V
+5V
+5V
+5V
MAX245
18 T OUT
T
T
OUT 22
A3
B3
R
R
R
R
R
R
R
R
R
R
R
R
R
R
OUT
OUT
OUT
OUT
OUT
IN
A4
A3
A2
A1
R
B5
B4
B3
B2
400kΩ
400kΩ
4 T IN
T
IN 36
B3
A3
19 T OUT
A4
OUT 21
B4
OUT 10
IN 11
A1
30
29
28
27
26
25
24
23
22
21
5 T IN
A4
T
IN 35
B4
B1
B1
B2
B3
B4
B5
R
IN 12
IN 13
IN 14
IN 15
A2
A3
A4
A5
1
ENR
ENT 39
IN 29
R
IN
11 R IN
R
A1
B1
R
IN
R
IN
5kΩ
10 R OUT
5kΩ
T
T
T
T
OUT 16
OUT 17
OUT 18
OUT 19
IN
A1
A2
A3
A4
R
OUT 30
A1
B1
R
T
T
T
T
OUT
OUT
OUT
OUT
B1
B2
B3
B4
12 R IN
IN 28
B2
A2
5kΩ
9 R OUT
5kΩ
GND 20
R
OUT 31
A2
B2
R
DIP
13 R IN
IN 27
B3
A3
5kΩ
8 R OUT
5kΩ
R
OUT 32
A3
B3
R
MAX245 FUNCTIONAL DESCRIPTION
10 RECEIVERS
14 R IN
IN 26
B4
A4
5 A-SIDE RECEIVERS (R ALWAYS ACTIVE)
A5
5 B-SIDE RECEIVERS (R ALWAYS ACTIVE)
B5
5kΩ
7 R OUT
5kΩ
8 TRANSMITTTERS
R
OUT 33
A4
B4
R
4 A-SIDE TRANSMITTERS
2 CONTROL PINS
15 R IN
IN 25
B5
A5
1 RECEIVER ENABLE (ENR)
1 TRANSMITTER ENABLE (ENT)
5kΩ
6 R OUT
5kΩ
R
OUT 34
B5
A5
GND
20
Figure 21. MAX245 Pin Configuration and Typical Operating Circuit
30 ______________________________________________________________________________________
+5V-Powered, Multichannel RS-232
Drivers/Receivers
+5V
TOP VIEW
1µF
40
V
CC
ENA
1
2
3
4
5
6
7
8
9
40
V
CC
+5V
400kΩ
+5V +5V
400kΩ
+5V +5V
400kΩ
+5V +5V
+5V
T
T
T
T
T
T
T
T
OUT
IN
T
T
T
T
OUT 24
16
2
A1
A1
A2
A2
A3
A3
A4
A4
B1
T
T
T
T
IN
IN
IN
39 ENB
A1
A2
A3
38
37
36
35
34
33
32
31
T
T
T
T
IN
IN
IN
IN
B1
B2
B3
B4
IN 38
B1
17
3
OUT
IN
OUT 23
B2
T
T
IN
A4
R
OUT
OUT
OUT
OUT
A5
IN 37
B2
R
R
R
R
R
R
R
R
R
R
R
R
R
R
OUT
OUT
OUT
OUT
OUT
IN
A4
A3
A2
A1
R
B5
B4
B3
B2
MAX246
18
4
OUT
IN
OUT 22
B3
T
IN 36
B3
OUT 10
OUT
OUT 21
19
IN 11
A1
30
29
28
27
26
25
24
23
22
21
B4
T
B1
B1
B2
B3
B4
B5
400kΩ
R
IN 12
IN 13
IN 14
IN 15
A2
A3
A4
A5
IN
IN
5
1
35
39
B4
R
IN
ENA
ENB
R
IN
11
R
IN
R
IN 29
B1
A1
R
IN
T
T
T
T
OUT 16
OUT 17
OUT 18
OUT 19
IN
A1
A2
A3
A4
5kΩ
5kΩ
T
T
T
T
OUT
OUT
OUT
OUT
B1
B2
B3
B4
10
12
R
R
OUT
IN
R
OUT 30
A1
A2
B1
R
IN 28
B2
5kΩ
5kΩ
GND 20
9
R
R
OUT
IN
R
OUT 31
A2
A3
B2
R
DIP
13
IN 27
B3
5kΩ
5kΩ
MAX246 FUNCTIONAL DESCRIPTION
10 RECEIVERS
8
R
R
OUT
IN
R
OUT 32
A3
A4
B3
R
5 A-SIDE RECEIVERS (R ALWAYS ACTIVE)
A5
5 B-SIDE RECEIVERS (R ALWAYS ACTIVE)
B5
14
IN 26
B4
8 TRANSMITTERS
5kΩ
5kΩ
4 A-SIDE TRANSMITTERS
4 B-SIDE TRANSMITTERS
2 CONTROL PINS
7
R
R
OUT
IN
R
OUT 33
A4
A5
B4
R
15
IN 25
B5
ENABLE A-SIDE (ENA)
ENABLE B-SIDE (ENB)
5kΩ
OUT
5kΩ
6
R
R OUT 34
B5
A5
GND
20
Figure 22. MAX246 Pin Configuration and Typical Operating Circuit
______________________________________________________________________________________ 31
+5V-Powered, Multichannel RS-232
Drivers/Receivers
+5V
TOP VIEW
1µF
40
V
CC
1 ENTA
ENTB 39
+5V
400kΩ
+5V +5V
400kΩ
+5V
ENTA
1
2
3
4
5
6
7
8
9
40
39
38
37
36
35
34
33
32
31
V
CC
16 T OUT
A1
T
T
T
T
OUT 24
B1
T
T IN
A1
T IN
A2
T IN
A3
ENTB
2 T IN
A1
IN 38
B1
T
T
T
T
IN
IN
IN
B1
B2
B3
B4
17 T OUT
A2
OUT 23
B2
T
T
IN
A4
R
OUT
OUT
OUT
OUT
B5
IN
3 T IN
A2
IN 37
B2
R
R
R
R
OUT
R
R
R
R
MAX247
+5V
+5V
B4
A4
A3
A2
A1
18 T OUT
OUT 22
A3
B3
T
OUT
OUT
OUT
B3
B2
400kΩ
+5V +5V
4 T IN
IN 36
B3
A3
OUT 10
B1
19 T OUT
OUT 21
A4
B4
ENRA
ENRB
11
12
13
14
30
29
28
27
26
25
24
23
22
21
400kΩ
R
R
R
R
IN
IN
IN
R
R
R
R
R
IN
IN
IN
IN
IN
A1
B1
B2
B3
B4
B5
5 T IN
A4
T
IN 35
IN 25
B4
B5
A2
6 R OUT
B5
R
A3
5kΩ
IN 15
A4
16
17
18
19
20
T
T
T
T
OUT
OUT
OUT
OUT
A1
A2
A3
A4
12 R IN
R
IN 29
A1
B1
T
T
T
T
OUT
OUT
OUT
OUT
B1
B2
B3
B4
5kΩ
10 R OUT
5kΩ
R
OUT 31
A1
B1
R
GND
13 R IN
IN 28
B2
A2
DIP
5kΩ
5kΩ
MAX247 FUNCTIONAL DESCRIPTION
9 RECEIVERS
9 R OUT
A2
R
OUT 32
B2
4 A-SIDE RECEIVERS
14 R IN
A3
R
IN 27
B3
5 B-SIDE RECEIVERS (R ALWAYS ACTIVE)
B5
8 TRANSMITTERS
5kΩ
8 R OUT
5kΩ
4 A-SIDE TRANSMITTERS
4 B-SIDE TRANSMITTERS
4 CONTROL PINS
R
OUT 33
A3
B3
R
15 R IN
IN 26
B4
A4
ENABLE RECEIVER A-SIDE (ENRA)
ENABLE RECEIVER B-SIDE (ENRB)
ENABLE RECEIVER A-SIDE (ENTA)
ENABLE RECEIVERr B-SIDE (ENTB)
5kΩ
5kΩ
7 R OUT
A4
R OUT 34
B4
11 ENRA
ENRB 30
GND
20
Figure 23. MAX247 Pin Configuration and Typical Operating Circuit
32 ______________________________________________________________________________________
+5V-Powered, Multichannel RS-232
Drivers/Receivers
TOP VIEW
+5V
1µF
1µF
20
21
C1+
C1-
V
22
CC
V+
V-
1µF
1µF
23
24
+5V TO +10V VOLTAGE DOUBLER
26
C2+
C2-
1µF
43
42 41 40
6
5
4
3
2
1
44
25
+10V TO -10V VOLTAGE INVERTER
18 ENTA
ENTB 27
+5V
+5V
+5V
1 T OUT
A1
T
T
T
T
OUT 44
B1
T
R
R
IN
IN
7
8
9
39
38
37
R
R
R
IN
IN
IN
A2
B3
B2
B1
400kΩ
14 T IN
A1
IN 31
B1
A1
ENRA
+5V
2 T OUT
A2
OUT 43
R
R
R
R
OUT 10
OUT 11
OUT 12
OUT 13
36 ENRB
B2
T
A1
A2
A3
400kΩ
35
34
33
32
31
30
29
R
R
R
R
OUT
OUT
OUT
OUT
B1
B2
B3
B4
MAX248
15 T IN
IN 30
B2
A2
+5V
+5V
A4
T
3 T OUT
OUT 42
A3
B3
T
IN 14
IN 15
IN 16
IN 17
A1
A2
A3
A4
400kΩ
T
T
T
T
IN
IN
IN
B1
B2
B3
16 T IN
IN 29
B3
A3
T
T
+5V
400kΩ
+5V
4 T OUT
OUT 41
A4
B4
T
18 19 20 21 22 23 24 25 26 27 28
17 T IN
IN 28
IN 37
A4
B4
B1
8 R IN
R
A1
PLCC
5kΩ
5kΩ
10 R OUT
A1
R
OUT 35
B1
MAX248 FUNCTIONAL DESCRIPTION
8 RECEIVERS
7 R IN
A2
R
IN 38
B2
4 A-SIDE RECEIVERS
5kΩ
11 R OUT
5kΩ
4 B-SIDE RECEIVERS
8 TRANSMITTERS
R
OUT 34
A2
B2
R
4 A-SIDE TRANSMITTERS
4 B-SIDE TRANSMITTERS
4 CONTROL PINS
6 R IN
IN 39
B3
A3
5kΩ
12 R OUT
5kΩ
ENABLE RECEIVER A-SIDE (ENRA)
ENABLE RECEIVER B-SIDE (ENRB)
ENABLE RECEIVER A-SIDE (ENTA)
ENABLE RECEIVER B-SIDE (ENTB)
R
OUT 33
A3
B3
R
5 R IN
IN 40
B4
A4
5kΩ
5kΩ
13 R OUT
A4
R OUT 32
B4
9 ENRA
ENRB 36
GND
19
Figure 24. MAX248 Pin Configuration and Typical Operating Circuit
______________________________________________________________________________________ 33
+5V-Powered, Multichannel RS-232
Drivers/Receivers
+5V
TOP VIEW
1µF
1µF
20
21
C1+
C1-
V
22
CC
V+
V-
1µF
1µF
23
24
+5V TO +10V VOLTAGE DOUBLER
26
C2+
C2-
1µF
43
42 41 40
6
5
4
3
2
1
44
25
+10V TO -10V VOLTAGE INVERTER
18 ENTA
ENTB 27
+5V
+5V
+5V
1 T OUT
A1
T
OUT 44
B1
T
R
R
IN
IN
7
8
9
39
38
37
R
R
R
IN
IN
IN
A2
B3
B2
B1
400kΩ
15 T IN
A1
IN 30
B1
A1
ENRA
+5V
2 T OUT
A2
T
T
OUT 43
R
R
R
R
R
OUT 10
OUT 11
OUT 12
OUT 13
36 ENRB
B2
T
A1
A2
A3
A4
400kΩ
35
34
33
32
31
30
29
R
R
R
R
R
OUT
OUT
OUT
OUT
OUT
B1
B2
B3
B4
B5
MAX249
16 T IN
IN 29
B2
A2
+5V
+5V
400kΩ
3 T OUT
OUT 42
A3
B3
14
15
OUT
A5
T
IN
A1
A2
A3
17 T IN
T
IN 28
IN 37
A3
B3
B1
T
T
IN 16
IN 17
T
T
IN
IN
B1
B2
8 R IN
R
A1
5kΩ
10 R OUT
5kΩ
18 19 20 21 22 23 24 25 26 27 28
R
OUT 35
A1
B1
R
7 R IN
IN 38
B2
A2
PLCC
5kΩ
11 R OUT
5kΩ
R
OUT 34
A2
B2
R
MAX249 FUNCTIONAL DESCRIPTION
10 RECEIVERS
6 R IN
IN 39
B3
A3
5 A-SIDE RECEIVERS
5kΩ
12 R OUT
5kΩ
5 B-SIDE RECEIVERS
6 TRANSMITTERS
R
OUT 33
A3
B3
R
3 A-SIDE TRANSMITTERS
3 B-SIDE TRANSMITTERS
4 CONTROL PINS
5 R IN
IN 40
B4
A4
5kΩ
13 R OUT
5kΩ
ENABLE RECEIVER A-SIDE (ENRA)
ENABLE RECEIVER B-SIDE (ENRB)
ENABLE RECEIVER A-SIDE (ENTA)
ENABLE RECEIVER B-SIDE (ENTB)
R
OUT 32
A4
B4
R
4 R IN
IN 41
B5
A5
5kΩ
5kΩ
14 R OUT
A5
R OUT 31
B5
9 ENRA
ENRB 36
GND
19
Figure 25. MAX249 Pin Configuration and Typical Operating Circuit
34 ______________________________________________________________________________________
+5V-Powered, Multichannel RS-232
Drivers/Receivers
___________________________________________Ordering Information (continued)
PART
TEMP RANGE
0°C to +70°C
0°C to +70°C
0°C to +70°C
-40°C to +85°C
-40°C to +85°C
-40°C to +85°C
-55°C to +±25°C
0°C to +70°C
0°C to +70°C
0°C to +70°C
-40°C to +85°C
-40°C to +85°C
0°C to +70°C
-40°C to +85°C
0°C to +70°C
0°C to +70°C
0°C to +70°C
-40°C to +85°C
-40°C to +85°C
-40°C to +85°C
-55°C to +±25°C
0°C to +70°C
0°C to +70°C
0°C to +70°C
0°C to +70°C
-40°C to +85°C
-40°C to +85°C
-40°C to +85°C
-55°C to +±25°C
0°C to +70°C
0°C to +70°C
0°C to +70°C
0°C to +70°C
-40°C to +85°C
-40°C to +85°C
-40°C to +85°C
-40°C to +85°C
-55°C to +±25°C
-55°C to +±25°C
0°C to +70°C
0°C to +70°C
0°C to +70°C
PIN-PACKAGE
±8 Plastic DIP
±8 Wide SO
Dice*
PART
TEMP RANGE
0°C to +70°C
PIN-PACKAGE
Dice*
MAX232AC/D
MAX232AEPE
MAX232AESE
MAX232AEWE
MAX232AEJE
MAX232AMJE
MAX232AMLP
MAX233CPP
MAX233EPP
MAX233ACPP
MAX233ACWP
MAX233AEPP
MAX233AEWP
MAX234CPE
MAX234CWE
MAX234C/D
MAX234EPE
MAX234EWE
MAX234EJE
MAX234MJE
MAX235CPG
MAX235EPG
MAX235EDG
MAX235MDG
MAX236CNG
MAX236CWG
MAX236C/D
MAX236ENG
MAX236EWG
MAX236ERG
MAX236MRG
MAX237CNG
MAX237CWG
MAX237C/D
MAX237ENG
MAX237EWG
MAX237ERG
MAX237MRG
MAX238CNG
MAX238CWG
MAX238C/D
MAX238ENG
MAX222CPN
MAX222CWN
MAX222C/D
MAX222EPN
MAX222EWN
MAX222EJN
MAX222MJN
MAX223CAI
MAX223CWI
MAX223C/D
MAX223EAI
MAX223EWI
MAX225CWI
MAX225EWI
MAX230CPP
MAX230CWP
MAX230C/D
MAX230EPP
MAX230EWP
MAX230EJP
MAX230MJP
MAX231CPD
MAX23±CWE
MAX23±CJD
MAX23±C/D
MAX23±EPD
MAX23±EWE
MAX23±EJD
MAX23±MJD
MAX232CPE
MAX232CSE
MAX232CWE
MAX232C/D
MAX232EPE
MAX232ESE
MAX232EWE
MAX232EJE
MAX232MJE
MAX232MLP
MAX232ACPE
MAX232ACSE
MAX232ACWE
-40°C to +85°C
-40°C to +85°C
-40°C to +85°C
-40°C to +85°C
-55°C to +±25°C
-55°C to +±25°C
0°C to +70°C
±6 Plastic DIP
±6 Narrow SO
±6 Wide SO
±8 Plastic DIP
±8 Wide SO
±8 CERDIP
±8 CERDIP
28 SSOP
±6 CERDIP
±6 CERDIP
20 LCC
20 Plastic DIP
20 Plastic DIP
20 Plastic DIP
20 Wide SO
-40°C to +85°C
0°C to +70°C
28 Wide SO
Dice*
0°C to +70°C
28 SSOP
-40°C to +85°C
-40°C to +85°C
0°C to +70°C
20 Plastic DIP
20 Wide SO
28 Wide SO
28 Wide SO
28 Wide SO
20 Plastic DIP
20 Wide SO
Dice*
±6 Plastic DIP
±6 Wide SO
0°C to +70°C
0°C to +70°C
Dice*
-40°C to +85°C
-40°C to +85°C
-40°C to +85°C
-55°C to +±25°C
0°C to +70°C
±6 Plastic DIP
±6 Wide SO
20 Plastic DIP
20 Wide SO
20 CERDIP
20 CERDIP
±4 Plastic DIP
±6 Wide SO
±4 CERDIP
Dice*
±6 CERDIP
±6 CERDIP
24 Wide Plastic DIP
24 Wide Plastic DIP
24 Ceramic SB
24 Ceramic SB
24 Narrow Plastic DIP
24 Wide SO
-40°C to +85°C
-40°C to +85°C
-55°C to +±25°C
0°C to +70°C
0°C to +70°C
±4 Plastic DIP
±6 Wide SO
±4 CERDIP
±4 CERDIP
±6 Plastic DIP
±6 Narrow SO
±6 Wide SO
Dice*
0°C to +70°C
Dice*
-40°C to +85°C
-40°C to +85°C
-40°C to +85°C
-55°C to +±25°C
0°C to +70°C
24 Narrow Plastic DIP
24 Wide SO
24 Narrow CERDIP
24 Narrow CERDIP
24 Narrow Plastic DIP
24 Wide SO
0°C to +70°C
0°C to +70°C
Dice*
±6 Plastic DIP
±6 Narrow SO
±6 Wide SO
±6 CERDIP
±6 CERDIP
20 LCC
-40°C to +85°C
-40°C to +85°C
-40°C to +85°C
-55°C to +±25°C
0°C to +70°C
24 Narrow Plastic DIP
24 Wide SO
24 Narrow CERDIP
24 Narrow CERDIP
24 Narrow Plastic DIP
24 Wide SO
0°C to +70°C
±6 Plastic DIP
±6 Narrow SO
±6 Wide SO
0°C to +70°C
Dice*
-40°C to +85°C
24 Narrow Plastic DIP
* Contact factory for dice specifications.
______________________________________________________________________________________ 35
+5V-Powered, Multichannel RS-232
Drivers/Receivers
___________________________________________Ordering Information (continued)
PART
TEMP RANGE
-40°C to +85°C
-40°C to +85°C
-55°C to +±25°C
0°C to +70°C
0°C to +70°C
0°C to +70°C
-40°C to +85°C
-40°C to +85°C
-40°C to +85°C
-55°C to +±25°C
0°C to +70°C
0°C to +70°C
0°C to +70°C
0°C to +70°C
0°C to +70°C
-40°C to +85°C
-40°C to +85°C
0°C to +70°C
0°C to +70°C
0°C to +70°C
0°C to +70°C
-40°C to +85°C
-40°C to +85°C
-40°C to +85°C
-55°C to +±25°C
PIN-PACKAGE
24 Wide SO
24 Narrow CERDIP
24 Narrow CERDIP
24 Narrow Plastic DIP
24 Wide SO
Dice*
PART
TEMP RANGE
0°C to +70°C
0°C to +70°C
0°C to +70°C
0°C to +70°C
-40°C to +85°C
-40°C to +85°C
-40°C to +85°C
-40°C to +85°C
-55°C to +±25°C
0°C to +70°C
0°C to +70°C
-40°C to +85°C
0°C to +70°C
0°C to +70°C
-40°C to +85°C
0°C to +70°C
0°C to +70°C
-40°C to +85°C
0°C to +70°C
0°C to +70°C
-40°C to +85°C
0°C to +70°C
0°C to +70°C
-40°C to +85°C
0°C to +70°C
-40°C to +85°C
PIN-PACKAGE
±6 Plastic DIP
±6 Narrow SO
±6 Wide SO
Dice*
MAX243CPE
MAX243CSE
MAX243CWE
MAX243C/D
MAX243EPE
MAX243ESE
MAX243EWE
MAX243EJE
MAX243MJE
MAX244CQH
MAX244C/D
MAX244EQH
MAX245CPL
MAX245C/D
MAX245EPL
MAX246CPL
MAX246C/D
MAX246EPL
MAX247CPL
MAX247C/D
MAX247EPL
MAX248CQH
MAX248C/D
MAX248EQH
MAX249CQH
MAX249EQH
MAX238EWG
MAX238ERG
MAX238MRG
MAX239CNG
MAX239CWG
MAX239C/D
MAX239ENG
MAX239EWG
MAX239ERG
MAX239MRG
MAX240CMH
MAX240C/D
MAX241CAI
MAX24±CWI
MAX24±C/D
MAX24±EAI
MAX24±EWI
MAX242CAP
MAX242CPN
MAX242CWN
MAX242C/D
MAX242EPN
MAX242EWN
MAX242EJN
MAX242MJN
±6 Plastic DIP
±6 Narrow SO
±6 Wide SO
±6 CERDIP
±6 CERDIP
44 PLCC
24 Narrow Plastic DIP
24 Wide SO
24 Narrow CERDIP
24 Narrow CERDIP
44 Plastic ꢁP
Dice*
Dice*
44 PLCC
40 Plastic DIP
Dice*
28 SSOP
28 Wide SO
Dice*
40 Plastic DIP
40 Plastic DIP
Dice*
28 SSOP
28 Wide SO
20 SSOP
40 Plastic DIP
40 Plastic DIP
Dice*
±8 Plastic DIP
±8 Wide SO
Dice*
40 Plastic DIP
44 PLCC
±8 Plastic DIP
±8 Wide SO
±8 CERDIP
Dice*
44 PLCC
44 PLCC
±8 CERDIP
44 PLCC
* Contact factory for dice specifications.
Package Information
ꢁor the latest package outline information, go to
www.maxim-ic.com/packages.
Revision History
Pages changed at Rev ±5: 2–5, 8, 9, 36
Maxim cannot assume responsibility for use of any circuitry other than circuitry entirely embodied in a Maxim product. No circuit patent licenses are
implied. Maxim reserves the right to change the circuitry and specifications without notice at any time.
36 __________________Maxim Integrated Products, 120 San Gabriel Drive, Sunnyvale, CA 94086 (408) 737-7600
© 2006 Maxim Integrated Products
is a registered trademark of Maxim Integrated Products, Inc.
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