MAX230CWP-T [MAXIM]
Line Driver, 5 Func, 5 Driver, CMOS, PDSO20, SOP-20;
| 型号： | MAX230CWP-T |
| 厂家： | 
MAXIM INTEGRATED PRODUCTS |
| 描述： | Line Driver, 5 Func, 5 Driver, CMOS, PDSO20, SOP-20 驱动 光电二极管 接口集成电路 驱动器 |
| 文件： | 总38页 (文件大小：1808K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
MAX220–MAX249
+5V-Powered, Multichannel RS-232
Drivers/Receivers
General Description
Next-Generation Device Features
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.
♦ 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)
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™
Ordering Information
________________________Applications
PART
TEMP RANGE
0°C to +70°C
PIN-PACKAGE
±6 Plastic DIP
±6 Narrow SO
±6 Wide SO
Dice*
MAX220CPE+
MAX220CSE+
MAX220CWE+
MAX220C/D
MAX220EPE+
MAX220ESE+
MAX220EWE+
MAX220EJE
MAX220MJE
Portable Computers
0°C to +70°C
0°C to +70°C
0°C to +70°C
Low-Power Modems
Interface Translation
-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
Battery-Powered RS-232 Systems
Multidrop RS-232 Networks
±6 CERDIP
+Denotes a lead(Pb)-free/RoHS-compliant package.
*Contact factory for dice specifications.
AutoShutdown and UCSP are trademarks of Maxim Integrated
Products, Inc.
Ordering Information continued at end of data sheet.
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
For pricing, delivery, and ordering information, please contact Maxim Direct
±9-4323; Rev ±6; 7/±0
at 1-888-629-4642, or visit Maxim’s website at www.maximintegrated.com.
MAX220–MAX249
+5V-Powered, Multichannel RS-232
Drivers/Receivers
ABSOLUTE MAXIMUM RATINGS—MAX220/222/232A/233A/242/243
(Voltages referenced to GND.)
±6-Pin Narrow SO (derate 8.70mW/°C above +70°C) ...696mW
V
...........................................................................-0.3V to +6V
±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
CC
V+ (Note ±)..................................................(V
- 0.3V) to +±4V
CC
V- (Note ±) ..............................................................+0.3V to -±4V
Input Voltages
TIN.............................................................-0.3V to (V
- 0.3V)
CC
RIN (Except MAX220)........................................................±30V
RIN (MAX220) ....................................................................±25V
TOUT (Except MAX220) (Note 2) ......................................±±5V
TOUT (MAX220)..............................................................±±3.2V
Output Voltages
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) .................................+300°C
Soldering Temperature (reflow)
20 PDIP (P20M+±) .......................................................+225°C
All other lead(Pb)-free packages.................................+260°C
All other packages containing lead(Pb) ......................+240°C
TOUT..................................................................................±±5V
ROUT........................................................-0.3V to (V
+ 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
±8-Pin Plastic DIP (derate ±±.±±mW/°C above +70°C)..889mW
20-Pin Plastic DIP (derate 8.00mW/°C above +70°C) ..440mW
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 TOUT in high-impedance state, V or V = 0V.
SHDN
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—MAX220/222/232A/233A/242/243
(V
CC
= +5V ±±0ꢀ, C±–C4 = 0.±µꢁF MAX220, C± = 0.047µꢁ, C2–C4 = 0.33µꢁ, T = T
to T
F unless otherwise noted.) (Note 3)
MAX
A
MIN
PARAMETER
CONDITIONS
MIN
TYP
MAX
UNITS
RS-232 TRANSMITTERS
Output Voltage Swing
All transmitter outputs loaded with 3kꢀ to GND
±±
±ꢀ
1.4
1.4
V
V
Input Logic-Low Voltage
0.ꢀ
All devices except MAX220
2
Input Logic-High Voltage
Logic Pullup/lnput Current
V
MAX220: V = +±.0V
CC
2.4
All except MAX220, normal operation
±
40
μA
V
= 0V, MAX222/MAX242, shutdown,
SHDN
±0.01
±1
MAX220
V
= +±.±V, V
= 0V, V
= ±1±V,
OUT
CC
SHDN
±0.01
±0.01
±10
MAX222/MAX242
Output Leakage Current
μA
V
= ±1±V
±10
±2±
116
OUT
V
CC
= V
= 0V
SHDN
MAX220, V
= ±12V
OUT
Data Rate
200
10M
±22
kbps
Transmitter Output Resistance
V
V
= V+ = V- = 0V, V
= ±2V
OUT
300
±ꢁ
ꢀ
CC
V
= 0V
OUT
Output Short-Circuit Current
RS-232 RECEIVERS
= 0V
mA
OUT
MAX220
±60
±30
±2±
RS-232 Input Voltage Operating Range
V
V
V
MAX220
All except MAX243 R2IN
MAX243 R2IN (Note 4)
All except MAX243 R2IN
MAX243 R2IN (Note 4)
0.ꢀ
-3
1.3
RS-232 Input Threshold Low
RS-232 Inphreshold High
V
V
= +±V
= +±V
CC
1.ꢀ
2.4
CC
-0.±
-0.1
2
Maxim Integrated
MAX220–MAX249
+5V-Powered, Multichannel RS-232
Drivers/Receivers
ELECTRICAL CHARACTERISTICS—MAX220/222/232A/233A/242/243 (continued)
(V
CC
= +5V ±±0ꢀ, C±–C4 = 0.±µꢁF MAX220, C± = 0.047µꢁ, C2–C4 = 0.33µꢁ, T = T
to T
F unless otherwise noted.) (Note 3)
MAX
A
MIN
PARAMETER
CONDITIONS
MIN
TYP
MAX
UNITS
All except MAX220/MAX243, V = +±V, no
CC
hysteresis in shutdown
0.2
0.±
1.0
RS-232 Input Hysteresis
RS-232 Input Resistance
V
MAX220
0.3
1
MAX243
3
3
±
ꢁ
T
A
= +2±°C (MAX220)
kꢁ
±
ꢁ
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
= 1.6mA (MAX220)
= -1.0mA
3.±
-2
V
CC
- 0.2
Sourcing V
= V
-10
OUT
GND
mA
Sinking V
= V
10
30
OUT
CC
V
= V or V = V (V
= 0V for
SHDN
CC
EN
CC SHDN
TTL/CMOS Output Leakage Current
±0.0±
±10
0.ꢀ
μA
MAX222), 0V ꢀ V
ꢀ V
CC
OUT
EN Input Threshold Low
EN Input Threshold High
Supply Voltage Range
MAX242
1.4
1.4
V
V
V
MAX242
2.0
4.±
±.±
2
MAX220
0.±
4
No load
MAX222/MAX232A/MAX233A/
MAX242/MAX243
10
V
CC
Supply Current (V
= V ),
SHDN CC
mA
μA
Figures ±, 6, 11, 19
MAX220
12
1±
3kꢁ load
both inputs
MAX222/MAX232A/MAX233A/
MAX242/MAX243
T
A
T
A
T
A
T
A
= +2±°C
0.1
2
10
±0
= 0°C to +ꢁ0°C
= -40°C to +ꢀ±°C
= -±±°C to +12±°C
MAX222/
MAX242
Shutdown Supply Current
2
±0
3±
100
±1
0.ꢀ
SHDN Input Leakage Current
SHDN Threshold Low
MAX222/MAX242
MAX222/MAX242
MAX222/MAX242
μA
V
1.4
1.4
SHDN Threshold High
2.0
6
V
C = ±0pF to 2±00pF,
R
L
MAX222/MAX232A/
MAX233/MAX242/MAX243
12
3
30
= 3kꢁ to ꢁkꢁ,
= +±V, T =
A
L
V
CC
Transition Slew Rate
V/μs
+2±°C, measured
from +3V to -3V or
-3V to +3V
MAX220
1.±
30.0
MAX222/MAX232A/
MAX233/MAX242/MAX243
1.3
4
3.±
10
t
t
, Figure 1
, Figure 1
PHLT
PLHT
MAX220
Transmitter Propagation Delay TLL to
RS-232 (Normal Operation)
μs
MAX222/MAX232A/
MAX233/MAX242/MAX243
1.±
±
3.±
10
MAX220
Maxim Integrated
3
MAX220–MAX249
+5V-Powered, Multichannel RS-232
Drivers/Receivers
ELECTRICAL CHARACTERISTICS—MAX220/222/232A/233A/242/243 (continued)
(V
CC
= +5V ±±0ꢀ, C±–C4 = 0.±µꢁF MAX220, C± = 0.047µꢁ, C2–C4 = 0.33µꢁ, T = T
to T
F unless otherwise noted.) (Note 3)
MAX
A
MIN
PARAMETER
CONDITIONS
MIN
TYP
0.±
0.6
0.6
MAX
UNITS
MAX222/MAX232A/MAX233/
MAX242/MAX243
1
3
1
t
t
, Figure 2
, Figure 2
PHLR
PLHR
MAX220
Receiver Propagation Delay RS-232 to
TLL (Normal Operation)
μs
MAX222/MAX232A/MAX233/
MAX242/MAX243
MAX220
0.ꢀ
0.±
2.±
12±
160
3
t
t
t
t
, Figure 2
, Figure 2
MAX242
10
Receiver Propagation Delay RS-232 to
TLL (Shutdown)
PHLS
PHLS
ER
μs
MAX242
10
Receiver-Output Enable Time
Receiver-Output Disable Time
MAX242, Figure 3
MAX242, Figure 3
±00
±00
ns
ns
DR
MAX222/MAX242, 0.1μF
caps (includes charge-pump
start-up), Figure 4
Transmitter-Output Enable Time
(SHDN Goes High)
t
2±0
600
μs
ns
ET
DT
Transmitter-Output Disable Time
(SHDN Goes Low)
MAX222/MAX242,
0.1μF caps, Figure 4
t
MAX222/MAX232A/MAX233/
MAX242/MAX243
300
2000
100
Transmitter + to - Propagation Delay
Difference (Normal Operation)
t
t
- t
ns
ns
PHLT PLHT
MAX220
MAX222/MAX232A/MAX233/
MAX242/MAX243
Receiver + to - Propagation Delay
Difference (Normal Operation)
- t
PHLR PLHR
MAX220
22±
Note 3: All units are production tested at hot. Specifications over temperature are guaranteed by design.
Note 4: MAX243 R2OUT is guaranteed to be low when R2IN ≥ 0V or is unconnected.
__________________________________________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
SHDN
V
CC
= +5.25V
= +4.75V
0V
0V
2
0
TRANSMITTER OUTPUTS
(EXCEPT MAX220, MAX233A)
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
0
10
20
30
40
50
60
500μs/div
DATA RATE (kb/s)
4
Maxim Integrated
MAX220–MAX249
+5V-Powered, Multichannel RS-232
Drivers/Receivers
ABSOLUTE MAXIMUM RATINGS—MAX223/MAX230–MAX241
(Voltages referenced to GND.)
...........................................................................-0.3V to +6V
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
V
CC
V+................................................................(V
- 0.3V) to +±4V
CC
V- ............................................................................+0.3V to -±4V
Input Voltages
TIN............................................................-0.3V to (V
+ 0.3V)
CC
RIN.....................................................................................±30V
Output Voltages
TOUT ..................................................(V+ + 0.3V) to (V- - 0.3V)
(derate ±2.50mW/°C above +70°C) ..............±W
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
ROUT........................................................-0.3V to (V
+ 0.3V)
CC
Short-Circuit Duration, TOUT to GND ........................Continuous
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) .................................+300°C
Soldering Temperature (reflow)
Continuous Power Dissipation (T = +70°C)
A
±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
(derate ±3.33mW/°C above +70°C) ..........±.07W
20 PDIP (P20M+±) .........................................................+225°C
24 PDIP (P24M-±) ..........................................................+225°C
All other lead(Pb)-free packages...................................+260°C
All other packages containing lead(Pb)...........................+240°C
24-Pin Plastic DIP (derate 9.09mW/°C above +70°C)......500mW
±6-Pin Wide SO (derate 9.52mW/°C above +70°C).........762mW
20-Pin Wide SO (derate ±0.00mW/°C above +70°C).......800mW
24-Pin Wide SO (derate ±±.76mW/°C above +70°C).......94±mW
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 ± ±0ꢀ; MAX233/MAX235, V
= +5V ± 5ꢀF C±–C4 = ±.0µꢁ;
CC
CC
MAX23±/MAX239, V
= +5V ±±0ꢀ; V+ = +7.5V to +±3.2V; T = T
to T
; unless otherwise noted.) (Note 5)
MAX
CC
A
MIN
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
Supply Current
MAX223/230/234–238/240/24±
7
mA
mA
T
A
= +25°C
MAX23±/239
MAX23±
0.4
±.8
5
5
V+ Supply Current
MAX239
±5
50
±0
0.8
MAX223
±5
±
Shutdown Supply Current
Input Logic-Low Voltage
T
A
= +25°C
µA
V
MAX230/235/236/240/24±
TIN, EN, SHDN (MAX233); EN, SHDN (MAX230/235–24±)
TIN
2.0
2.4
Input Logic-High Voltage
V
EN, SHDN (MAX223);
EN, SHDN (MAX230/235/236/240/24±)
Logic Pullup Current
V
TIN
= 0V
±.5
200
+30
µA
V
Receiver Input Voltage
Operating Range
-30
Maxim Integrated
5
MAX220–MAX249
+5V-Powered, Multichannel RS-232
Drivers/Receivers
ELECTRICAL CHARACTERISTICS—MAX223/MAX230–MAX241 (continued)
(MAX223/230/232/234/236/237/238/240/241, V
= +5V 10ꢀ% MAX233/MAX235, V
= +5V 5ꢀ‚ C1ꢁC4 = 1.0ꢂµ%
CC
CC
MAX231/MAX239, V
= +5V 10ꢀ% V+ = +7.5V to +13.2V% T = T
to T
% unless otherwise noted.) (Note 5)
MAX
CC
A
MIN
PARAMETER
CONDITIONS
MIN
TYP
MAX UNITS
Normal operation
V
V
= +5V (MAX223)
= 0V (MAX235/236/240/241)
0.8
1.2
SHDN
SHDN
T
V
= +25°C,
A
RS-232 Input Logic-Low Voltage
V
= +5V
CC
Shutdown (MAX223)
V
V
= 0V,
= +5V (R4IN, R5IN)
0.6
1.5
1.7
1.5
SHDN
EN
Normal operation
V
V
= 5V (MAX223)
= 0V (MAX235/236/240/241)
2.4
SHDN
SHDN
T
V
= +25°C,
A
RS-232 Input Logic-High Voltage
V
= +5V
CC
Shutdown (MAX223)
V
V
= 0V,
= +5V (R4IN‚ R5IN)
2.4
SHDN
EN
RS-232 Input Hysteresis
V
= +5V, no hysteresis in shutdown
= +5V
0.2
3
0.5
5
1.0
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
= 1.6mA (MAX231/232/233, I = 3.2mA)
OUT
0.4
OUT
OUT
= -1mA
3.5
V
- 0.4
V
CC
0V ≤ R
EN
≤ V % V = 0V (MAX223)%
CC EN
OUT
TTL/CMOS Output Leakage Current
Receiver Output Enable Time
0.05
10
ꢂA
ns
V
= V
(MAX235ꢁ241)
CC
MAX223
600
400
900
250
0.5
4
Normal
operation
MAX235/236/239/240/241
MAX223
Normal
operation
Receiver Output Disable Time
Propagation Delay
ns
ꢂs
MAX235/236/239/240/241
Normal operation
10
40
40
RS-232 IN to
TTL/CMOS OUT,
C = 150pµ
L
t
PHLS
PLHS
V
= 0V
SHDN
(MAX223)
t
6
MAX223/MAX230/MAX234ꢁ241, T = +25°C, V = +5V,
A
CC
R = 3kΩ to 7kΩ‚ C = 50pµ to 2500pµ, measured from
3
5.1
4
30
30
L
L
+3V to -3V or -3V to +3V
Transition Region Slew Rate
Transmitter Output Resistance
V/ꢂs
MAX231/MAX232/MAX233, T = +25°C, V
= +5V,
CC
A
R = 3kΩ to 7kΩ, C = 50pµ to 2500pµ, measured from
L
L
+3V to -3V or -3V to +3V
V
CC
= V+ = V- = 0V, V
=
OUT
2V
300
Ω
Transmitter Output Short-Circuit
Current
10
mA
Note 5: All units are production tested at hot except for the MAX240, which is production tested at T = +25°C. Specifications over
A
temperature are guaranteed by design.
6
Maxim Integrated
MAX220–MAX249
+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
12.0
11.0
10.0
9.0
7.4
7.2
7.0
6.8
6.6
6.4
6.2
6.0
8.5
8.0
7.5
7.0
6.5
1 TRANSMITTER LOADED
T
V
= +25°C
CC
A
2 TRANSMITTERS
LOADED
= +5V
LOADED, R = 3kΩ
L
C1–C4 = 1μF
2 TRANSMITTERS
LOADED
1 TRANSMITTER
LOADED
160kb/s
80kb/s
20kb/s
8.0
3 TRANS-
MITTERS
LOADED
7.0
T
V
= +25°C
CC
A
T
A
= +25°C
3 TRANSMITTERS
LOADED
6.0
= +5V
C1–C4 = 1μF
TRANSMITTER
LOADS =
3 TRANSMITTERS LOADED
4 TRANSMITTERS
LOADED
5.0
4.0
R = 3kΩ
L
4 TRANSMITTERS
LOADED
C1–C4 = 1μF
3kΩ || 2500pF
0
500
1000
1500
2000
2500
0
500
1000
1500
2000
2500
4.5
5.0
5.5
LOAD CAPACITANCE (pF)
LOAD CAPACITANCE (pF)
V
(V)
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
-6.0
-6.5
-6.0
-6.2
-6.4
-6.6
-6.8
-7.0
-7.2
-7.4
-7.6
10
8
4 TRANS-
MITTERS
LOADED
T
= +25°C
A
T
V
= +25°C
CC
A
C1–C4 = 1μF
TRANSMITTER
LOADS =
= +5V
6
3 TRANSMITTERS LOADED
T
V
= +25°C
CC
A
R = 3kΩ
L
= +5V
4
3kΩ || 2500pF
-7.0
-7.5
-8.0
-8.5
-9.0
C1–C4 = 1μF
C1–C4 = 1μF
2
V- LOADED,
NO LOAD
ON V+
V+ AND V-
EQUALLY
LOADED
V+ LOADED,
NO LOAD
ON V-
160kb/s
80kb/s
20kb/s
0
1 TRANS-
MITTER
-2
-4
-6
LOADED
3 TRANS-
MITTERS
LOADED
2 TRANS-
MITTERS
LOADED
-8
ALL TRANSMITTERS UNLOADED
-10
4.5
5.0
5.5
0
500
1000
1500
2000
2500
0
5
10 15 20 25 30 35 40 45 50
CURRENT (mA)
V
(V)
LOAD CAPACITANCE (pF)
CC
V+, V- WHEN EXITING SHUTDOWN
(1μF CAPACITORS)
MAX220-13
V+
O
V-
V
SHDN
*
500ms/div
*SHUTDOWN POLARITY IS REVERSED
Maxim Integrated
7
MAX220–MAX249
+5V-Powered, Multichannel RS-232
Drivers/Receivers
ABSOLUTE MAXIMUM RATINGS—MAX225/MAX244–MAX249
(Voltages referenced to GND.)
Continuous Power Dissipation (T = +70°C)
A
28-Pin Wide SO (derate ±2.50mW/°C above +70°C) .............±W
CC
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
RIN.....................................................................................±25V
TOUT (Note 6)....................................................................±±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)).................................+300°C
Soldering Temperature (reflow)
40 PDIP (P40M-2) ..........................................................+225°C
All other lead(Pb)-free packages...................................+260°C
All other packages containing lead(Pb) ........................+240°C
ROUT........................................................-0.3V to (V
Short Circuit Duration (one output at a time)
+ 0.3V)
CC
TOUT to GND...........................................................Continuous
ROUT to GND...........................................................Continuous
Note 6: Input voltage measured with transmitter output in a high-impedance state, shutdown, or V
= 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
MAX
CC
CC
A
MIN
otherwise noted.) (Note 7)
PARAMETER
RS-232 TRANSMITTERS
Input Logic-Low Voltage
Input Logic-High Voltage
CONDITIONS
MIN
TYP
MAX
UNITS
±.4
±.4
0.8
V
V
2
Normal operation
Shutdown
±0
50
±±
64
Logic Pullup/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
V
, V
= V
, V
CC, OUT
, V
= ±±5V
,
ENA ENB ENT ENTA
±0.0±
±0.0±
±25
±25
V
ENTB
V
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 8)
300
±7
±0M
±30
Ω
mA
CC
OUT
= 0V
OUT
RS-232 Input Voltage Operating Range
RS-232 Input Logic-Low Voltage
RS-232 Input Logic-High Voltage
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
= V
-±0
OUT
GND
TTL/CMOS Output Short-Circuit Current
TTL/CMOS tput Leakage Current
mA
µA
Sinking V
= V
±0
30
OUT
CC
Normal operation, outputs disabled,
Tables ±a–±d, 0V ≤ V ≤ V , V
±0.05
±0.±0
= V
CC
OUT
CC ENR_
8
Maxim Integrated
MAX220–MAX249
+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
MAX
CC
CC
A
MIN
otherwise noted.) (Note 7)
PARAMETER
CONDITIONS
MIN
TYP
MAX UNITS
POWER SUPPLY AND CONTROL LOGIC
MAX225
4.75
4.5
5.25
V
Supply Voltage Range
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
Logic-low voltage
±±
µA
±.4
±.4
0.8
V
Logic-high voltage
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
t
t
t
t
t
t
, ꢁigure ±
, ꢁigure ±
, ꢁigure 2
, ꢁigure 2
, ꢁigure 2
, ꢁigure 2
±.3
±.5
0.6
0.6
0.6
3.0
3.5
3.5
±.5
±.5
±0
PHLT
PLHT
PHLR
PLHR
PHLS
PLHS
Transmitter Propagation Delay
TLL to RS-232 (Normal Operation)
Receiver Propagation Delay
TLL to RS-232 (Normal Operation)
µs
µs
Receiver Propagation Delay
TLL to RS-232 (Low-Power Mode)
±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 Enable Time
Receiver-Output Disable Time
t
t
, ꢁigure 3
±00
±00
500
500
ns
ns
ER
, ꢁigure 3
DR
MAX246–MAX249
(excludes charge-pump startup)
5
µs
Transmitter Enable Time
Transmitter Disable Time
t
t
ET
MAX225/MAX245–MAX249
(includes charge-pump startup)
±0
ms
ns
, ꢁigure 4
±00
DT
Note 7: All units production tested at hot. Specifications over temperature are guaranteed by design.
Note 8: The 300Ω minimum specification complies with EIA/TIA-232E, but the actual resistance when in shutdown mode or V
=
CC
0V is ±0MΩ as is implied by the leakage specification.
Maxim Integrated
9
MAX220–MAX249
+5V-Powered, Multichannel RS-232
Drivers/Receivers
__________________________________________Typical Operating Characteristics
MAX225/MAX244–MAX249
TRANSMITTER OUTPUT VOLTAGE (V+, V-)
vs. LOAD CAPACITANCE AT
DIFFERENT DATA RATES
TRANSMITTER SLEW RATE
vs. LOAD CAPACITANCE
OUTPUT VOLTAGE
vs. LOAD CURRENT FOR V+ AND V-
9.0
8.5
8.0
7.5
7.0
6.5
6.0
5.5
5.0
18
16
14
12
10
8
10
8
V
= +5V WITH ALL TRANSMITTERS DRIVEN
CC
V
= +5V
CC
LOADED WITH 5kΩ
V+ AND V- LOADED
10kb/s
6
4
2
EITHER V+ OR
V- LOADED
20kb/s
EXTERNAL POWER SUPPLY
V
CC
= +5V
1μF CAPACITORS
EXTERNAL CHARGE PUMP
1μF CAPACITORS
8 TRANSMITTERS
DRIVING 5kΩ AND
2000pF AT 20kb/s
40kb/s
60kb/s
0
40kb/s DATA RATE
8 TRANSMITTERS
LOADED WITH 3kΩ
-2
V- LOADED
-4
-6
100kb/s
200kb/s
6
4
V+ AND V- LOADED
-8
ALL CAPACITIORS 1μF
V+ LOADED
30 35
2
-10
0
1
2
3
4
5
0
1
2
3
4
5
0
5
10
15
20
25
LOAD CAPACITANCE (nF)
LOAD CAPACITANCE (nF)
LOAD CURRENT (mA)
10
Maxim Integrated
MAX220–MAX249
+5V-Powered, Multichannel RS-232
Drivers/Receivers
Test Circuits/Timing Diagrams
+3V
0V*
50%
50%
50%
INPUT
+3V
INPUT
0V
V
CC
OUTPUT
50%
GND
V+
0V
V-
OUTPUT
t
t
t
PLHR
PHLR
PHLS
t
PLHS
t
t
PHLT
PLHT
*EXCEPT FOR R2 ON THE MAX243
WHERE -3V IS USED.
ꢁigure ±. Transmitter Propagation-Delay Timing
ꢁigure 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
EN
OUTPUT ENABLE TIME (t
)
ER
0V
-5V
+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
OH
- 0.5V
RECEIVER
OUTPUTS
V
- 2V
CC
V
OL
+ 0.5V
b) TEST CIRCUIT
V
OL
c) DISABLE TIMING
ꢁigure 3. Receiver-Output Enable and Disable Timing
ꢁigure 4. Transmitter-Output Disable Timing
Maxim Integrated
11
MAX220–MAX249
+5V-Powered, Multichannel RS-232
Drivers/Receivers
Control Pin Configuration Tables
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 High-Z
All Active
All High-Z
All Low-Power Receive Mode
All High-Z
Shutdown
All High-Z
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 High-Z,
RA5 Active
RB±–RB4 High-Z,
RB5 Active
All Active
All High-Z
All Active
All High-Z
All Low-Power
Receive Mode
All Low-Power
Receive Mode
±
±
0
±
Shutdown
Shutdown
RA±–RA4 High-Z,
RA5 Low-Power
Receive Mode
RB±–RB4 High-Z,
RB5 Low-Power
Receive Mode
All High-Z
All High-Z
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 High-Z,
RB5 Active
All Active
All High-Z
All High-Z
All Active
All Active
RA±–RA4 High-Z,
RA5 Active
±
±
0
±
Shutdown
Shutdown
All Active
RA±–RA4 High-Z,
RA5 Low-Power
Receive Mode
RB±–RB4 High-Z,
RA5 Low-Power
Receive Mode
All High-Z
All High-Z
12
Maxim Integrated
MAX220–MAX249
+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 High-Z, except
RB5 stays active on
MAX247
All Active All Active All Active
All Active All Active All High-Z
All Active All Active All High-Z
All Active All High-Z All Active
All Active All High-Z All Active
All Active All High-Z All High-Z
All Active All High-Z All High-Z
All High-Z All Active All Active
All High-Z All Active All Active
All High-Z All Active All High-Z
All High-Z All Active All High-Z
All Active
All High-Z, except
RB5 stays active on
MAX247
All Active
All High-Z, except
RB5 stays active on
MAX247
All Active
All High-Z, except
RB5 stays active on
MAX247
All Active
All High-Z, except
RB5 stays active on
MAX247
All Active
All High-Z, except
RB5 stays active on
MAX247
Low-Power
All High-Z All High-Z
Receive Mode
Low-Power
Receive Mode
±
±
±
±
±
±
±
±
0
0
±
±
0
±
0
±
Shutdown
Shutdown
Shutdown
Shutdown
All High-Z, except
RB5 stays active on
MAX247
Low-Power
All High-Z All High-Z
Receive Mode
Low-Power
Receive Mode
All High-Z All High-Z All High-Z
All High-Z All High-Z All High-Z
All High-Z, except
RB5 stays active on
MAX247
Maxim Integrated
13
MAX220–MAX249
+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 pullup 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 connected to V . This is
CC
because V+ is internally connected to V
mode.
in shutdown
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-
Table 2. Three-State Control of Receivers
put voltage ranges from (V+ -±.3V) to (V- +0.5V).
PART
SHDN
EN
EN(R)
RECEIVERS
SHDN
Input thresholds are both TTL and CMOS compatible.
The inputs of unused drivers can be left unconnected
Low
High Low
High High
X
High Impedance
Active
High Impedance
MAX223
__
__
since 400kΩ input pullup resistors to V
are built in
CC
(except for the MAX220). The pullup resistors force the
outputs of unused drivers low because all drivers invert.
The internal input pullup resistors typically source ±2µA,
except in shutdown mode where the pullups are dis-
abled. Driver outputs turn off and enter a high-imped-
ance statwhere 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
Maxim Integrated
MAX220–MAX249
+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
unconnected 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 uncon-
nectedF 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 volt-
age level.
Maxim Integrated
15
MAX220–MAX249
+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
Maxim Integrated
MAX220–MAX249
+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
6
-10V
C4
C2+
C2-
+10V TO -10V
VOLTAGE INVERTER
C1-
T1OUT
R1IN
5
C2+
C2-
MAX220
MAX232
MAX232A
+5V
R1OUT
T1IN
400kΩ
T1IN
T1OUT
11
14
V-
+5V
TTL/CMOS
INPUTS
RS-232
T2OUT
T2IN
400kΩ
T2IN
OUTPUTS
T2OUT
R1IN
7
R2OUT
R2IN
10
12
DIP/SO
R1OUT
R2OUT
13
TTL/CMOS
OUTPUTS
RS-232
INPUTS
5kΩ
CAPACITANCE (μF)
C1 C2 C3 C4 C5
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
DEVICE
8
9
R2IN
5kΩ
GND
15
ꢁigure 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
C1-
VOLTAGE DOUBLER
V+
V-
+
C1
4
5
(N.C.) EN
C1+
SHDN
1
2
20
19
18
17
16
15
14
13
12
11
+
C2+
C2-
-10V
C4
(N.C.) EN
C1+
SHDN
V
1
2
3
4
5
6
7
8
9
18
17
16
15
14
13
12
11
10
CC
+10V TO -10V
VOLTAGE INVERTER
C2
6
V+
GND
T1OUT
N.C.
V
3
CC
+5V
400kΩ
12 T1IN
+5V
400kΩ
11 T2IN
C1-
V+
GND
4
(EXCEPT MAX220)
T1OUT
C1-
MAX222
MAX242
C2+
C2-
T1OUT
R1IN
5
15
MAX222
MAX242
C2+
C2-
R1IN
R1OUT
N.C.
6
TTL/CMOS
INPUTS
RS-232
OUTPUTS
(EXCEPT MAX220)
T2OUT
V-
R1OUT
T1IN
7
8
T2OUT
V-
8
T2OUT
R2IN
T1IN
T2IN
9
13 R1OUT
R1IN
14
R2IN
R2OUT
R2OUT
T2IN
10
TTL/CMOS
OUTPUTS
RS-232
INPUTS
5kΩ
10
1
R2OUT
(N.C.)
R2IN
9
DIP/SO
SSOP
EN
5kΩ
18
( ) ARE FOR MAX222 ONLY.
PIN NUMBERS IN TYPICAL OPERATING CIRCUIT ARE FOR DIP/SO PACKAGES ONLY.
SHDN
GND
16
ꢁigure 6. MA22/MAX242 Pin Configurations and Typical Operating Circuit
Maxim Integrated
17
MAX220–MAX249
+5V-Powered, Multichannel RS-232
Drivers/Receivers
+5V
0.1μF
TOP VIEW
28
27
V
CC
V
CC
+5V
400kΩ
T1IN
T2IN
T3IN
T4IN
3
4
11
12
18
17
+
T1OUT
T2OUT
T3OUT
+5V
+5V
ENR
ENR
T1IN
T2IN
V
1
2
28 CC
400kΩ
400kΩ
400kΩ
400kΩ
V
27 CC
ENT
26
3
T3IN
25
4
MAX225
R1OUT
R2OUT
R3OUT
R3IN
T4IN
5
24
25
24
+5V
+5V
23 T5IN
6
R4OUT
7
22
T4OUT
T5OUT
21 R5OUT
8
R2IN
R1IN
R5IN
20
9
T5IN
ENT
R4IN
10
11
12
13
14
19
18
17
23
26
16
15
T1OUT
T2OUT
T3OUT
T4OUT
T5OUT
T5OUT
T5OUT
R1IN
R1OUT
R2OUT
R3OUT
R4OUT
R5OUT
GND
GND
16
15
5
10
5kΩ
R2IN
5kΩ
R3IN
5kΩ
R4IN
5kΩ
R5IN
5kΩ
SO
6
7
9
8
MAX225 FUNCTIONAL DESCRIPTION
5 RECEIVERS
5 TRANSMITTERS
22
21
19
20
2 CONTROL PINS
1 RECEIVER ENABLE (ENR)
1 TRANSMITTER ENABLE (ENT)
ENR
ENR
1
2
PINS (ENR, GND, V , T5OUT) ARE INTERNALLY CONNECTED.
CC
CONNECT EITHER OR BOTH EXTERNALLY. T5OUT IS A SINGLE DRIVER.
GND
14
GND
13
ꢁigure 7. MAX225 Pin Configuration and Typical Operating Circuit
18
Maxim Integrated
MAX220–MAX249
+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
T1OUT
T2OUT
T1IN
+5V
7
2
3
1
T1
+
T3OUT
1
2
3
4
5
6
7
8
9
28 T4OUT
27 R3IN
400kΩ
T1OUT
T2OUT
R2IN
6
T2IN
+5V
T2
26 R3OUT
25 SHDN (SHDN)
24 EN (EN)
23 R4IN*
22 R4OUT*
21 T4IN
RS-232
OUTPUTS
TTL/CMOS
INPUTS
400kΩ
R2OUT
T2IN
MAX223
MAX241
T3OUT
T3IN
20
T3
+5V
T1IN
400kΩ
R1OUT
R1IN
T4OUT
R1IN
T4IN
21
8
28
9
T4
20 T3IN
GND 10
11
19 R5OUT*
18 R5IN*
17 V-
R1OUT
R1
R2
V
CC
5kΩ
R2IN
C1+ 12
V+ 13
16 C2-
R2OUT
R3OUT
5
4
C1- 14
15 C2+
5kΩ
Wide SO/
SSOP
26
R3IN 27
5kΩ
RS-232
INPUTS
LOGIC
OUTPUTS
R3
R4
R5
22 R4OUT
R4IN
23
5kΩ
R5OUT
R5IN
19
24
18
25
*R4 AND R5 IN MAX223 REMAIN ACTIVE IN SHUTDOWN.
5kΩ
SHDN
(SHDN)
NOTE: PIN LABELS IN ( ) ARE FOR MAX241.
EN (EN)
GND
10
ꢁigure 8. MAX223/MAX24± Pin Configuration and Typical Operating Circuit
Maxim Integrated
19
MAX220–MAX249
+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
T3OUT
T1OUT
T2OUT
T2IN
T4OUT
T5IN
N.C.
1
2
20
19
18
17
16
15
14
13
12
11
C2+
C2-
+10V TO -10V
VOLTAGE INVERTER
13
+5V
3
400kΩ
T1
400kΩ
T2
SHDN
T5OUT
T4IN
T3IN
V-
4
5 T1IN
T1OUT
T2OUT
T3OUT
T4OUT
T5OUT
2
MAX230
T1IN
GND
+5V
5
6
T2IN
4
3
V
CC
+5V
7
400kΩ
T3
400kΩ
T4
400kΩ
T5
C1+
V+
8
T3IN
T4IN
TTL/CMOS
INPUTS
14
15
1
RS-232
OUTPUTS
C2-
9
+5V
+5V
C1-
C2+
10
20
DIP/SO
T5IN
19
18
16
17
N.C.x
SHDN
GND
6
ꢁigure 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+
C-
V-
V+
V
1
2
3
4
5
6
7
8
C+
C-
1
2
3
4
5
6
7
14 V+
13
16
400kΩ
(10)
(13)
(12)
V
CC
15 CC
T1OUT
11
T1IN
+5V
8
T1
GND
V-
12 GND
11 T1OUT
10 R1IN
14
13
12
11
10
9
TTL/CMOS
INPUTS
RS-232
OUTPUTS
T1OUT
R1IN
T2OUT
R2IN
MAX231
T2OUT
R2IN
R2OUT
T2IN
MAX231
400kΩ
T2OUT
R1IN
4
T2IN
7
T2
R2OUT
T2IN
R1OUT
T1IN
9
8
R1OUT
T1IN
(11)
R1OUT
10
9
R1
R2
TTL/CMOS
OUTPUTS
N.C.
5kΩ
RS-232
INPUTS
N.C.
DIP
R2OUT
R2IN
5
SO
6
5kΩ
GND
PIN NUMBERS IN ( ) ARE FOR SO PACKAGE.
12 (14)
ꢁigure ±0. MAX23± Pin Configurations and Typical Operating Circuit
20
Maxim Integrated
MAX220–MAX249
+5V-Powered, Multichannel RS-232
Drivers/Receivers
+5V INPUT
1.0μF
TOP VIEW
7
V
CC
+5V
+5V
400kΩ
400kΩ
+
T1OUT
5
T1IN
T2IN
2
1
T2IN
T1IN
R2OUT
R2IN
1
2
20
19
18
17
16
15
14
13
12
11
TTL/CMOS
INPUTS
RS-232
OUTPUTS
R1OUT
R1IN
T2OUT
V-
3
T2OUT
R1IN
18
4
4
R1OUT
3
MAX233
T1OUT
GND
C2-
5
MAX233A
5kΩ
TTL/CMOS
OUTPUTS
C2+
6
RS-232
INPUTS
V
CC
V+ (C1-)
C1- (C1+)
V- (C2+)
C2+ (C2-)
7
R2OUT
R2IN 19
20
(V+) C1+
GND
8
8 (13)
11 (12)
5kΩ
9
C1+
C1-
V-
DO NOT MAKE
CONNECTIONS TO
THESE PINS
C2+
13 (14)
12 (10)
15
16
(V-) CS-
10
C2+
C2-
INTERNAL -10V
POWER SUPPLY
17
10 (11)
DIP/SO
V-
CS-
14 (8)
INTERNAL +10V
POWER SUPPLY
V+
GND
6
GND
9
PIN NAMES IN ( ) ARE FOR SO PACKAGE.
ꢁigure ±±. MAX233/MAX233A Pin Configuration and Typical Operating Circuit
+5V INPUT
1.0μF
TOP VIEW
6
1.0μF
7
V
8
C1+
CC
+5V TO +10V
VOLTAGE DOUBLER
V+
V-
1.0μF
1.0μF
9
C1-
C2+
10
+10V TO -10V
VOLTAGE INVERTER
12
+
11
C2-
1.0μF
T1OUT
T2OUT
T2IN
T3OUT
T4OUT
T4IN
T3IN
V-
1
2
3
4
5
6
7
8
16
15
14
13
12
11
10
9
+5V
400kΩ
400kΩ
T1IN
T1OUT
T2OUT
T3OUT
T4OUT
4
3
1
2
T1
T2
T3
T4
T1IN
MAX234
+5V
+5V
+5V
GND
T2IN
T3IN
V
C2-
CC
RS-232
OUTPUTS
C1+
V+
C2+
TTL/CMOS
INPUTS
400kΩ
C1-
13
16
15
DIP/SO
400kΩ
14 T4IN
GND
5
ꢁigure ±2. M234 Pin Configuration and Typical Operating Circuit
Maxim Integrated
21
MAX220–MAX249
+5V-Powered, Multichannel RS-232
Drivers/Receivers
+5V INPUT
TOP VIEW
1.0μF
12
V
CC
+5V
400kΩ
T1OUT
T1IN
8
3
T1
+5V
+5V
+5V
+5V
400kΩ
400kΩ
400kΩ
400kΩ
T2OUT
T3OUT
T4OUT
T2IN
T3IN
T4IN
7
15
16
4
T2
T3
T4
2
1
TTL/CMOS
INPUTS
RS-232
OUTPUTS
+
T4OUT
T3OUT
T1OUT
T2OUT
R2IN
1
2
3
4
5
6
7
8
9
24 R3IN
23 R3OUT
22 T5IN
21 SHDN
20 EN
MAX235
T5OUT
R1IN
22 T5IN
19
10
T5
T1
R2OUT
T2IN
19 T5OUT
18 R4IN
17 R4OUT
16 T4IN
15 T3IN
14 R5OUT
13 R5IN
9
R1OUT
T1IN
5kΩ
R2IN
R1OUT
R1IN 10
GND 11
5
R2OUT
R3OUT
R4OUT
6
R2
5kΩ
R3IN 24
5kΩ
R4IN
5kΩ
R5IN
V
12
CC
23
TTL/CMOS
OUTPUTS
RS-232
INPUTS
R3
R4
DIP
18
17
R5OUT
EN
13
14
20
R5
5kΩ
SHDN
21
GND
11
ꢁigure ±3. MAX235 Pin Configuration and Typical Operating Circuit
22
Maxim Integrated
MAX220–MAX249
+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
T1OUT
T1IN
7
2
T1
+
T3OUT
T1OUT
T2OUT
R1IN
1
2
3
4
5
6
7
8
9
24 T4OUT
23 R2IN
22 R2OUT
21 SHDN
20 EN
+5V
+5V
+5V
400kΩ
T2OUT
T3OUT
T2IN
T3IN
6
3
1
T2
TTL/CMOS
INPUTS
RS-232
OUTPUTS
400kΩ
MAX236
R1OUT
T2IN
18
T3
19 T4IN
18 T3IN
17 R3OUT
16 R3IN
15 V-
T1IN
400kΩ
GND
T4OUT 24
19 T4IN
T4
V
CC
C1+ 10
V+ 11
14 C2-
R1IN
4
5
R1OUT
R1
C1- 12
13 C2+
5kΩ
DIP/SO
22
23
R2OUT
R2IN
5kΩ
RS-232
INPUTS
TTL/CMOS
OUTPUTS
R2
R3
R3OUT
EN
R3IN 16
5kΩ
SHDN
17
20
21
GND
8
ꢁigure ±4. MAX236 Pin Configuration and Typical Operating Circuit
Maxim Integrated
23
MAX220–MAX249
+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
+
T3OUT
T1OUT
T2OUT
R1IN
1
2
3
4
5
6
7
8
9
24 T4OUT
23 R2IN
22 R2OUT
21 T5IN
20 T5OUT
19 T4IN
18 T3IN
17 R3OUT
16 R3IN
15 V-
T1OUT
T2OUT
T3OUT
T1IN
7
2
400kΩ
T2IN
T3IN
6
3
1
T2
MAX237
R1OUT
T2IN
400kΩ
18
TTL/CMOS
INPUTS
RS-232
OUTPUTS
T3
T1IN
400kΩ
GND
T4OUT 24
T5OUT 20
19 T4IN
21 T5IN
V
T4
CC
+5V
C1+ 10
V+ 11
400kΩ
14 C2-
T5
C1- 12
13 C2+
DIP/SO
5
R1OUT
R1IN
5kΩ
4
R1
22
R2IN
5kΩ
R2OUT
23
RS-232
INPUTS
TTL/CMOS
OUTPUTS
R2
R3
R3OUT
R3IN 16
5kΩ
17
GND
8
ꢁigure ±5. MAX237 Pin Configuration and Typical Operating Circuit
24
Maxim Integrated
MAX220–MAX249
+5V-Powered, Multichannel RS-232
Drivers/Receivers
TOP VIEW
+5V INPUT
1.0μF
1.0μF
1.0μF
9
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
+
T1IN
5
18
19
2
T2OUT
T1OUT
R2IN
1
2
3
4
5
6
7
8
9
24 T3OUT
23 R3IN
22 R3OUT
21 T4IN
20 T4OUT
19 T3IN
18 T2IN
17 R4OUT
16 R4IN
15 V-
T1OUT
T2OUT
+5V
+5V
400kΩ
T2IN
T3IN
1
T2
R2OUT
T1IN
TTL/CMOS
INPUTS
RS-232
OUTPUTS
MAX238
400kΩ
R1OUT
R1IN
24
T3OUT
T4OUT
T3
400kΩ
T4
+5V
GND
20
V
21 T4IN
CC
C1+ 10
V+ 11
14 C2-
C1- 12
13 C2+
6
4
R1OUT
R1IN
7
3
R1
R2
5kΩ
R2IN
5kΩ
R3IN
5kΩ
R4IN
5kΩ
DIP/SO
R2OUT
TTL/CMOS
OUTPUTS
RS-232
INPUTS
R3OUT
R4OUT
23
16
22
17
R3
R4
GND
8
ꢁigure ±6. MAX238 Pin Configuration and Typical Operating Circuit
Maxim Integrated
25
MAX220–MAX249
+5V-Powered, Multichannel RS-232
Drivers/Receivers
TOP VIEW
+7.5V TO +13.2V
+5V INPUT
INPUT
1.0μF
4
5
V
V+
CC
6
8
C1+
C1-
V-
+10V TO -10V
1.0μF
7
1.0μF
VOLTAGE INVERTER
+5V
+5V
400kΩ
T1
T1OUT
T2OUT
T1IN
T2IN
24
23
19
20
+
R1OUT
R1IN
1
2
3
4
5
6
7
8
9
24 T1IN
23 T2IN
22 R2OUT
21 R2IN
20 T2OUT
19 T1OUT
18 R3IN
17 R3OUT
16 T3IN
15 N.C.
400kΩ
T2
TTL/CMOS
INPUTS
RS-232
OUTPUTS
GND
+5V
V
CC
400kΩ
MAX239
V+
T3OUT 13
T3IN
16
1
T3
C+
C-
V-
R1IN
2
R1OUT
R1
R2
R3
R5IN
5kΩ
R2IN
R5OUT 10
R4OUT 11
R4IN 12
14 EN
22 R2OUT
21
13 T3OUT
5kΩ
R3IN 18
5kΩ
R4IN 12
5kΩ
R5IN
DIP/SO
17
R3OUT
RS-232
INPUTS
TTL/CMOS
OUTPUTS
11 R4OUT
R4
R5
R5OUT
EN
10
14
9
5kΩ
N.C.
15
GND
3
ꢁigure ±7. MAX239 Pin Configuration and Typical Operating Circuit
26
Maxim Integrated
MAX220–MAX249
+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
T1IN
+5V
14 T2IN
+5V
T3IN
400kΩ
T1OUT
T2OUT
15
7
T1
400kΩ
T2
8
6
5
400kΩ
T3
T3OUT
T4OUT
RS-232
OUTPUTS
37
TTL/CMOS
INPUTS
+5V
T4IN
400kΩ
+
N.C.
R2OUT
T2IN
T1IN
R1OUT
R1IN
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
T5OUT
R4IN
R4OUT
T4IN
38
2
T4
+5V
T5IN
400kΩ
T5OUT
R1IN
41
17
T5
MAX240
GND
16 R1OUT
R1
V
T3IN
CC
5kΩ
R2IN
N.C.
N.C.
N.C.
R5OUT
R5IN
N.C.
13 R2OUT
10
4
R2
5kΩ
3
R3OUT
R3IN
5kΩ
RS-232
INPUTS
TTL/CMOS
OUTPUTS
R3
R4
R5
Plastic FP
39 R4OUT
R4IN
40
5kΩ
R5IN
R5OUT
36
35
43
5kΩ
SHDN
42 EN
GND
18
ꢁigure ±8. MAX240 Pin Configuration and Typical Operating Circuit
Maxim Integrated
27
MAX220–MAX249
+5V-Powered, Multichannel RS-232
Drivers/Receivers
+5V INPUT
TOP VIEW
0.1μF
0.1μF
16
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
5
VOLTAGE INVERTER
C2-
15 GND
14 T1OUT
13 R1IN
12 R1OUT
11 T1IN
10 T2IN
0.1μF
+5V
C1-
400kΩ
400kΩ
C2+
C2-
MAX243
T1IN
T1OUT
11
14
+5V
V-
TTL/CMOS
INPUTS
RS-232
OUTPUTS
T2OUT
R2IN
T2IN
T2OUT
R1IN
7
10
12
9
R2OUT
DIP/SO
R1OUT
13
TTL/CMOS
OUTPUTS
RS-232
INPUTS
5kΩ
R2IN
R2OUT
8
9
RECEIVER INPUT R1 OUTPUT R2 OUTPUT
5kΩ
≤ -3V
OPEN
≥ +3V
HIGH
HIGH
LOW
HIGH
LOW
LOW
GND
15
ꢁigure ±9. MAX243 Pin Configuration and Typical Operating Circuit
28
Maxim Integrated
MAX220–MAX249
+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 TA1OUT
TB1OUT 44
+
400kΩ
400kΩ
15 TA1IN
2 TA2OUT
TB1IN 30
RA3IN
7
8
9
39 RB4IN
38 RB3IN
37 RB2IN
36 RB1IN
35 RB1OUT
34 RB2OUT
33 RB3OUT
32 RB4OUT
31 RB5OUT
30 TB1IN
RA2IN
RA1IN
TB2OUT 43
RA1OUT 10
RA2OUT 11
RA3OUT 12
RA4OUT 13
RA5OUT 14
TA1IN 15
16 TA2IN
3 TA3OUT
TB2IN 29
MAX244
+5V
+5V
+5V
+5V
TB3OUT 42
400kΩ
400kΩ
17 TA3IN
4 TA4OUT
TB3IN 28
TB4OUT 41
TA2IN 16
TA3IN 17
29 TB2IN
18 TA4IN
9 RA1IN
TB4IN 27
RB1IN 36
18 19 20 21 22 23 24 25 26 27 28
5kΩ
5kΩ
PLCC
10 RA1OUT
8 RA2IN
RB1OUT 35
RB2IN 37
5kΩ
5kΩ
MAX249 FUNCTIONAL DESCRIPTION
10 RECEIVERS
11 RA2OUT
7 RA3IN
RB2OUT 34
RB3IN 38
5 A-SIDE RECEIVERS
5 B-SIDE RECEIVERS
8 TRANSMITTERS
5kΩ
5kΩ
4 A-SIDE TRANSMITTERS
4 B-SIDE TRANSMITTERS
NO CONTROL PINS
12 RA3OUT
6 RA4IN
RB3OUT 33
RB4IN 39
5kΩ
5kΩ
13 RA4OUT
5 RA5IN
RB4OUT 32
RB5IN 40
5kΩ
14 RA5OUT
5kΩ
RB5OUT 31
GND
19
ꢁigure 20. MAX244 Pin Configuration and Typical Operating Circuit
Maxim Integrated
29
MAX220–MAX249
+5V-Powered, Multichannel RS-232
Drivers/Receivers
+5V
TOP VIEW
1μF
40
V
CC
+
+5V
+5V
+5V
+5V
16 TA1OUT
TB1OUT 24
ENR
TA1IN
1
2
3
4
5
6
7
8
9
40
V
CC
400kΩ
400kΩ
39 ENT
2 TA1IN
TB1IN 38
TA2IN
38 TB1IN
37 TB2IN
36 TB3IN
35 TB4IN
34 RB5OUT
33 RB4OUT
32 RB3OUT
31 RB2OUT
17 TA2OUT
TB2OUT 23
TA3IN
TA4IN
3 TA2IN
TB2IN 37
RA5OUT
RA4OUT
RA3OUT
RA2OUT
+5V
+5V
+5V
+5V
MAX245
18 TA3OUT
TB3OUT 22
400kΩ
400kΩ
4 TA3IN
TB3IN 36
19 TA4OUT
TB4OUT 21
RA1OUT 10
RA1IN 11
RA2IN 12
RA3IN 13
RA4IN 14
RA5IN 15
TA1OUT 16
TA2OUT 17
TA3OUT 18
TA4OUT 19
GND 20
30 RB1OUT
29 RB1IN
28 RB2IN
27 RB3IN
26 RB4IN
25 RB5IN
24 TB1OUT
23 TB2OUT
22 TB3OUT
21 TB4OUT
5 TA4IN
TB4IN 35
ENT 39
1
ENR
11 RA1IN
RB1IN 29
5kΩ
5kΩ
10 RA1OUT
12 RA2IN
RB1OUT 30
RB2IN 28
5kΩ
5kΩ
9 RA2OUT
13 RA3IN
RB2OUT 31
RB3IN 27
DIP
5kΩ
5kΩ
8 RA3OUT
14 RA4IN
RB3OUT 32
RB4IN 26
MAX245 FUNCTIONAL DESCRIPTION
10 RECEIVERS
5 A-SIDE RECEIVERS (R ALWAYS ACTIVE)
A5
5 B-SIDE RECEIVERS (R ALWAYS ACTIVE)
B5
5kΩ
5kΩ
8 TRANSMITTTERS
7 RA4OUT
15 RA5IN
RB4OUT 33
RB5IN 25
4 A-SIDE TRANSMITTERS
2 CONTROL PINS
1 RECEIVER ENABLE (ENR)
1 TRANSMITTER ENABLE (ENT)
5kΩ
6 RA5OUT
5kΩ
RB5OUT 34
GND
20
ꢁigure 2±. MA245 Pin Configuration and Typical Operating Circuit
30
Maxim Integrated
MAX220–MAX249
+5V-Powered, Multichannel RS-232
Drivers/Receivers
+5V
TOP VIEW
1μF
40
+
V
CC
ENA
TA1IN
1
2
3
4
5
6
7
8
9
40
V
CC
+5V
400kΩ
+5V +5V
400kΩ
+5V +5V
400kΩ
+5V +5V
+5V
TA1OUT
TA1IN
TB1OUT 24
TB1IN 38
16
2
39 ENB
TA2IN
38 TB1IN
37 TB2IN
36 TB3IN
35 TB4IN
34 RB5OUT
33 RB4OUT
32 RB3OUT
31 RB2OUT
TA3IN
17 TA2OUT
TB2OUT 23
TB2IN 37
TA4IN
RA5OUT
RA4OUT
RA3OUT
RA2OUT
3
TA2IN
MAX246
18 TA3OUT
TB3OUT 22
TB3IN 36
TA3IN
4
RA1OUT 10
TA4OUT
TB4OUT 21
19
RA1IN 11
RA2IN 12
RA3IN 13
RA4IN 14
RA5IN 15
TA1OUT 16
TA2OUT 17
TA3OUT 18
TA4OUT 19
GND 20
30 RB1OUT
29 RB1IN
28 RB2IN
27 RB3IN
26 RB4IN
25 RB5IN
24 TB1OUT
23 TB2OUT
22 TB3OUT
21 TB4OUT
400kΩ
TA4IN
ENA
TB4IN
ENB
5
1
35
39
11 RA1IN
RB1IN 29
5kΩ
5kΩ
10 RA1OUT
12 RA2IN
RB1OUT 30
RB2IN 28
5kΩ
5kΩ
9
RA2OUT
RB2OUT 31
RB3IN 27
DIP
13 RA3IN
5kΩ
5kΩ
MAX246 FUNCTIONAL DESCRIPTION
10 RECEIVERS
8
RA3OUT
RB3OUT 32
RB4IN 26
5 A-SIDE RECEIVERS (R ALWAYS ACTIVE)
A5
5 B-SIDE RECEIVERS (R ALWAYS ACTIVE)
B5
14 RA4IN
8 TRANSMITTERS
5kΩ
5kΩ
4 A-SIDE TRANSMITTERS
4 B-SIDE TRANSMITTERS
2 CONTROL PINS
7
RA4OUT
RB4OUT 33
RB5IN 25
15 RA5IN
ENABLE A-SIDE (ENA)
ENABLE B-SIDE (ENB)
5kΩ
RA5OUT
5kΩ
RB5OUT 34
6
GND
20
ꢁigure 22. M246 Pin Configuration and Typical Operating Circuit
Maxim Integrated
31
MAX220–MAX249
+5V-Powered, Multichannel RS-232
Drivers/Receivers
+5V
TOP VIEW
1μF
40
V
CC
1 ENTA
ENTB 39
+
+5V
400kΩ
+5V +5V
400kΩ
+5V +5V
400kΩ
+5V +5V
+5V
ENTA
TA1IN
1
2
3
4
5
6
7
8
9
40
39
38
37
36
35
34
33
32
31
30
V
CC
16 TA1OUT
TB1OUT 24
ENTB
TB1IN
TB2IN
TB3IN
TA2IN
2 TA1IN
17 TA2OUT
3 TA2IN
TB1IN 38
TB2OUT 23
TB2IN 37
TA3IN
TA4IN
RB5OUT
RA4OUT
RA3OUT
RA2OUT
TB4IN
RB4OUT
MAX247
18 TA3OUT
4 TA3IN
TB3OUT 22
TB3IN 36
RB3OUT
RB2OUT
RB1OUT
RA1OUT 10
19 TA4OUT
TB4OUT 21
ENRA
RA1IN
RA2IN
RA3IN
ENRB
11
12
13
14
400kΩ
29 RB1IN
28 RB2IN
27 RB3IN
26 RB4IN
25 RB5IN
24 TB1OUT
23 TB2OUT
22 TB3OUT
21 TB4OUT
5 TA4IN
TB4IN 35
RB5IN 25
6 RB5OUT
5kΩ
RA4IN 15
16
17
18
19
20
TA1OUT
TA2OUT
TA3OUT
TA4OUT
GND
12 RA1IN
RB1IN 29
5kΩ
5kΩ
10 RA1OUT
13 RA2IN
RB1OUT 31
RB2IN 28
DIP
5kΩ
5kΩ
MAX247 FUNCTIONAL DESCRIPTION
9 RECEIVERS
9 RA2OUT
14 RA3IN
RB2OUT 32
RB3IN 27
4 A-SIDE RECEIVERS
5 B-SIDE RECEIVERS (R ALWAYS ACTIVE)
B5
8 TRANSMITTERS
5kΩ
5kΩ
4 A-SIDE TRANSMITTERS
4 B-SIDE TRANSMITTERS
4 CONTROL PINS
8 RA3OUT
15 RA4IN
RB3OUT 33
RB4IN 26
ENABLE RECEIVER A-SIDE (ENRA)
ENABLE RECEIVER B-SIDE (ENRB)
ENABLE RECEIVER A-SIDE (ENTA)
ENABLE RECEIVER B-SIDE (ENTB)
5kΩ
5kΩ
7 RA4OUT
11 ENRA
RB4OUT 34
ENRB 30
GND
20
ꢁigure 23. MAX247 Pin Configuration and Typical Operating Circuit
32
Maxim Integrated
MAX220–MAX249
+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 TA1OUT
TB1OUT 44
RA2IN
7
8
9
39 RB3IN
38 RB2IN
37 RB1IN
36 ENRB
400kΩ
RA1IN
ENRA
14 TA1IN
2 TA2OUT
15 TA2IN
3 TA3OUT
16 TA3IN
4 TA4OUT
17 TA4IN
TB1IN 31
TB2OUT 43
TB2IN 30
+5V
RA1OUT 10
RA2OUT 11
RA3OUT 12
RA4OUT 13
TA1IN 14
400kΩ
35 RB1OUT
34 RB2OUT
33 RB3OUT
32 RB4OUT
31 TB1IN
30 TB2IN
29 TB3IN
MAX248
+5V
+5V
TB3OUT 42
TB3IN 29
400kΩ
TA2IN 15
TA3IN 16
+5V
400kΩ
+5V
TA4IN 17
TB4OUT 41
TB4IN 28
18 19 20 21 22 23 24 25 26 27 28
8 RA1IN
RB1IN 37
PLCC
5kΩ
5kΩ
10 RA1OUT
7 RA2IN
RB1OUT 35
RB2IN 38
MAX248 FUNCTIONAL DESCRIPTION
8 RECEIVERS
4 A-SIDE RECEIVERS
5kΩ
5kΩ
4 B-SIDE RECEIVERS
8 TRANSMITTERS
11 RA2OUT
6 RA3IN
RB2OUT 34
RB3IN 39
4 A-SIDE TRANSMITTERS
4 B-SIDE TRANSMITTERS
4 CONTROL PINS
5kΩ
5kΩ
ENABLE RECEIVER A-SIDE (ENRA)
ENABLE RECEIVER B-SIDE (ENRB)
ENABLE RECEIVER A-SIDE (ENTA)
ENABLE RECEIVER B-SIDE (ENTB)
12 RA3OUT
5 RA4IN
RB3OUT 33
RB4IN 40
5kΩ
5kΩ
13 RA4OUT
9 ENRA
RB4OUT 32
ENRB 36
GND
19
ꢁigure 24. MA248 Pin Configuration and Typical Operating Circuit
Maxim Integrated
33
MAX220–MAX249
+5V-Powered, Multichannel RS-232
Drivers/Receivers
+5V
TOP VIEW
1μF
1μF
20
21
C1+
V
22
CC
V+
V-
1μF
23
24
C1-
+5V TO +10V VOLTAGE DOUBLER
26
C2+
C2-
1μF
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 TA1OUT
TB1OUT 44
TB1IN 30
RA2IN
RA1IN
ENRA
7
8
9
39 RB3IN
38 RB2IN
37 RB1IN
36 ENRB
400kΩ
15 TA1IN
2 TA2OUT
16 TA2IN
3 TA3OUT
+5V
TB2OUT 43
TB2IN 29
RA1OUT 10
RA2OUT 11
RA3OUT 12
RA4OUT 13
400kΩ
35 RB1OUT
34 RB2OUT
33 RB3OUT
32 RB4OUT
MAX249
+5V
+5V
400kΩ
TB3OUT 42
14
15
RA5OUT
TA1IN
31
RB5OUT
17 TA3IN
8 RA1IN
TB3IN 28
RB1IN 37
TA2IN 16
TA3IN 17
30 TB1IN
29 TB2IN
5kΩ
5kΩ
18 19 20 21 22 23 24 25 26 27 28
10 RA1OUT
7 RA2IN
RB1OUT 35
RB2IN 38
PLCC
5kΩ
5kΩ
11 RA2OUT
6 RA3IN
RB2OUT 34
RB3IN 39
MAX249 FUNCTIONAL DESCRIPTION
10 RECEIVERS
5 A-SIDE RECEIVERS
5kΩ
5kΩ
5 B-SIDE RECEIVERS
6 TRANSMITTERS
12 RA3OUT
5 RA4IN
RB3OUT 33
RB4IN 40
3 A-SIDE TRANSMITTERS
3 B-SIDE TRANSMITTERS
4 CONTROL PINS
5kΩ
5kΩ
ENABLE RECEIVER A-SIDE (ENRA)
ENABLE RECEIVER B-SIDE (ENRB)
ENABLE RECEIVER A-SIDE (ENTA)
ENABLE RECEIVER B-SIDE (ENTB)
13 RA4OUT
4 RA5IN
RB4OUT 32
RB5IN 41
5kΩ
5kΩ
14 RA5OUT
9 ENRA
RB5OUT 31
ENRB 36
GND
19
ꢁigure 25. MAX249 Pin Configuration and Typical Operating Circuit
34
Maxim Integrated
MAX220–MAX249
+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
MAX222CPN+
MAX222CWN+
MAX222C/D
-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
MAX222EPN+
MAX222EWN+
MAX222EJN
±8 Plastic DIP
±8 Wide SO
±8 CERDIP
±8 CERDIP
28 SSOP
±6 CERDIP
±6 CERDIP
20 LCC
MAX222MJN
MAX223CAI+
MAX223CWI+
MAX223C/D
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
MAX223EAI+
MAX223EWI+
MAX225CWI+
MAX225EWI+
MAX230CPP+
MAX230CWP+
MAX230C/D
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*
MAX234EPE+
MAX234EWE+
MAX234EJE
-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
MAX230EPP+
MAX230EWP+
MAX230EJP
20 Plastic DIP
20 Wide SO
20 CERDIP
20 CERDIP
±4 Plastic DIP
±6 Wide SO
±4 CERDIP
Dice*
±6 CERDIP
MAX234MJE
±6 CERDIP
MAX235CPG+
MAX235EPG+
MAX235EDG
MAX235MDG
MAX236CNG+
MAX236CWG+
MAX236C/D
24 Wide Plastic DIP
24 Wide Plastic DIP
24 Ceramic SB
24 Ceramic SB
24 Narrow Plastic DIP
24 Wide SO
MAX230MJP
MAX231CPD+
MAX23±CWE+
MAX23±CJD
MAX23±C/D
-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
MAX23±EPD+
MAX23±EWE+
MAX23±EJD
±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*
MAX236ENG+
MAX236EWG+
MAX236ERG
MAX236MRG
MAX237CNG+
MAX237CWG+
MAX237C/D
-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
MAX23±MJD
MAX232CPE+
MAX232CSE+
MAX232CWE+
MAX232C/D
24 Narrow CERDIP
24 Narrow CERDIP
24 Narrow Plastic DIP
24 Wide SO
0°C to +70°C
0°C to +70°C
Dice*
MAX232EPE+
MAX232ESE+
MAX232EWE+
MAX232EJE
±6 Plastic DIP
±6 Narrow SO
±6 Wide SO
±6 CERDIP
±6 CERDIP
20 LCC
MAX237ENG+
MAX237EWG+
MAX237ERG
MAX237MRG
MAX238CNG+
MAX238CWG+
MAX238C/D
-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
MAX232MJE
MAX232MLP+
MAX232ACPE+
MAX232ACSE+
MAX232AC+
0°C to +70°C
±6 Plastic DIP
±6 Narrow SO
±6 Wide SO
0°C to +70°C
Dice*
+Denotes a lead(Pb)-free/RoHS-compliant package.
*Contact factory for dice specifications.
Maxim Integrated
35
MAX220–MAX249
+5V-Powered, Multichannel RS-232
Drivers/Receivers
___________________________________________Ordering Information (continued)
PART
MAX238ENG+
TEMP RANGE
-40°C to +85°C
PIN-PACKAGE
24 Narrow Plastic DIP
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
MAX238EWG+
MAX238ERG
MAX238MRG
MAX239CNG+
MAX239CWG+
MAX239C/D
-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
24 Wide SO
24 Narrow CERDIP
24 Narrow CERDIP
24 Narrow Plastic DIP
24 Wide SO
Dice*
MAX243EPE+
MAX243ESE+
MAX243EWE+
MAX243EJE
±6 Plastic DIP
±6 Narrow SO
±6 Wide SO
±6 CERDIP
±6 CERDIP
44 PLCC
MAX239ENG+
MAX239EWG+
MAX239ERG
MAX239MRG
MAX240CMH+
MAX240C/D
24 Narrow Plastic DIP
24 Wide SO
24 Narrow CERDIP
24 Narrow CERDIP
44 Plastic ꢁP
Dice*
MAX243MJE
MAX244CQH+
MAX244C/D
Dice*
MAX244EQH+
MAX245CPL+
MAX245C/D
44 PLCC
40 Plastic DIP
Dice*
MAX241CAI+
MAX24±CWI+
MAX24±C/D
28 SSOP
28 Wide SO
Dice*
MAX245EPL+
MAX246CPL+
MAX246C/D
40 Plastic DIP
40 Plastic DIP
Dice*
MAX24±EAI+
MAX24±EWI+
MAX242CAP+
MAX242CPN+
MAX242CWN+
MAX242C/D
28 SSOP
28 Wide SO
20 SSOP
MAX246EPL+
MAX247CPL+
MAX247C/D
40 Plastic DIP
40 Plastic DIP
Dice*
±8 Plastic DIP
±8 Wide SO
Dice*
MAX247EPL+
MAX248CQH+
MAX248C/D
40 Plastic DIP
44 PLCC
MAX242EPN+
MAX242EWN+
MAX242EJN
±8 Plastic DIP
±8 Wide SO
±8 CERDIP
Dice*
MAX248EQH+
MAX249CQH+
MAX249EQH+
44 PLCC
44 PLCC
MAX242MJN
±8 CERDIP
44 PLCC
+Denotes a lead(Pb)-free/RoHS-compliant package.
*Contact factory for dice specifications.
36
Maxim Integrated
MAX220–MAX249
+5V-Powered, Multichannel RS-232
Drivers/Receivers
Package Information
For the latest package outline information and land patterns, go to www.maxim-ic.com/packages. Note that a “+”, “#”, or “-” in
the package code indicates RoHS status only. Package drawings may show a different suffix character, but the drawing pertains to
the package regardless of RoHS status.
PACKAGE TYPE
14 PDIP
PACKAGE CODE
P14+3
P16+1
P16+2
P16+3
P18+5
P20+3
P20M+1
N24+3
P24M+1
P28+2
P40+1
P40M+2
J14-3
OUTLINE NO.
LAND PATTERN NO.
16 PDIP
16 PDIP
16 PDIP
21-0043
18 PDIP
20 PDIP
20 PDIP
24 PDIP
24 PDIP
—
28 PDIP
21-0044
40 PDIP
40 PDIP
14 CERDIP
16 CERDIP
18 CERDIP
20 CERDIP
24 CERDIP
16 SO(N)
16 SO(N)
16 SO(W)
16 SO(W)
16 SO(W)
18 SO(W)
20 SO(W)
20 SO(W)
24 SO(W)
28 SO(W)
28 SO(W)
28 SO(W)
20 LCC
J16-3
J18-2
21-0045
21-0041
J20-2
R24-4
S16+3
S16+5
W16+1
W16+2
W16+3
W18+1
W20+3
W20M+1
W24+2
W28+1
W28+2
W28M+1
L20+3
90-0097
90-0107
90-0181
90-0108
90-0182
21-0042
90-0109
21-0658
21-0056
90-0177
90-0094
90-0110
90-0095
90-0117
—
20 SSOP
24 SSOP
28 SSOP
16 TSSOP
16 FPCK
44 MQFP
44 PLCC
44 PLCC
A20+1
A24+2
A28+1
U16+1
F16-3
21-0013
21-0826
M44+5
Q44+1
Q44+2
90-0169
21-0049
90-0236
Maxim Integrated
37
MAX220–MAX249
+5V-Powered, Multichannel RS-232
Drivers/Receivers
Revision History
REVISION REVISION
DESCRIPTION
PAGES
CHANGED
NUMBER
DATE
Added part information to the lead temperature in the Absolute Maximum Ratings
sections
1±
1/06
2, ±, ꢀ
Changed multiple packages to lead-free versions; updated/added notes 3, 4, ±, ꢁ,
and ꢀ to the Electrical Characteristics table; removed incorrect subscripting from all
pin names in the Electrical Characteristics table and Pin Configurations
16
ꢁ/10
1, 2–9, 1ꢁ–36
Maxim cannot me responsibility for use of any circuitry other than circuitry entirely embodied in a Maxim product. No circuit patent licenses are implied.
Maxim reserveright to change the circuitry and specifications without notice at any time. The parametric values (min and max limits) shown in the Electrical
Characteristics table are guaranteed. Other parametric values quoted in this data sheet are provided for guidance.
38
Maxim Integrated 160 Rio Robles, San Jose, CA 95134 USA 1-408-601-1000
©
The Maxim logo and Maxim Integrated are trademarks of Maxim Integrated Products, Inc.
2010 Maxim Integrated
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