LT1039AMJ#TRPBF [Linear]
IC LINE TRANSCEIVER, Line Driver or Receiver;
| 型号： | LT1039AMJ#TRPBF |
| 厂家： | 
Linear |
| 描述： | IC LINE TRANSCEIVER, Line Driver or Receiver 驱动器 |
| 文件： | 总12页 (文件大小：171K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
LT1039/LT1039-16
RS232 Driver/Receiver
with Shutdown
U
FEATURES
DESCRIPTIO
The LT®1039 is a triple RS232 driver/receiver that in-
cludes shutdown. Each receiver will accept up to ±30V
input and can drive either TTL or CMOS logic. The RS232
driversacceptTTLlogicinputsandoutputRS232voltage
levels. The outputs are fully protected against overload
and can be shorted to ground or up to ±30V without
damage to the drivers. Additionally, when the system is
shut down or power is off, the outputs are in a high
impedance state allowing data line sharing. Bipolar cir-
cuitry makes this driver/receiver exceptionally rugged
against overloads or ESD damage.
■
Operates from ±5V to ±15V Supplies
■
Fully Protected Against Overload
■
Outputs Can Be Driven ±30V Without Damage
■
■
■
■
■
■
■
■
■
■
Three-State Outputs; Outputs Open When Off
Bipolar Circuit—No Latchup
±30V Input Range
Triple Driver/Receiver
No Supply Current in Shutdown
30kΩ Input Impedance
Meets All RS232 Specifications
16-Pin Version—Pin Compatible with MC145406
Available in SO Package
ABIASpinallowsonereceivertobekeptonwhiletherest
of the part is shut down.
15kV ESD: LT1039A
The LT1039 is also available in the 16-pin version,
without shutdown or BIAS pin functions.
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APPLICATIO S
For applications requiring operation from a single 5V
supply, see the LT1080A/LT1081A, LT1180A/LT1181A
and LT1130A data sheets. For applications requiring
15kV ESD, see the LT1039A.
■
RS232 Interface
Terminals
■
■
Modems
, LTC and LT are registered trademarks of Linear Technology Corporation.
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TYPICAL APPLICATIO
1
+
18
17
16
Driver Output Swing
12V
BIAS*
5V
V
V
CC
LT1039
30k
+
2
3
V
ON/OFF
LOGIC
RS232 IN
POSITIVE
–0.5
4
5
15
14
RS232 OUT
RS232 IN
LOGIC
LOGIC
1.5
NEGATIVE
30k
30k
1.0
0.5
6
7
13
12
LOGIC
LOGIC
RS232 OUT
RS232 IN
–
V
*BIAS PIN USED
TO KEEP THE
8
9
11
10
RS232 OUT
–12V
LOGIC
0
2
4
6
8
10
–
RECEIVER ON
OUTPUT CURRENT (mA)
V
GND
WHILE IN SHUTDOWN
1039 TA02
1039 TA01
1
LT1039/LT1039-16
W W
U W
ABSOLUTE MAXIMUM RATINGS
(Note 1)
Supply Voltage
Short-Circuit Duration ..................................... Indefinite
Operating Temperature Range
LT1039C.................................................. 0°C to 70°C
LT1039I ............................................. –40°C to 85°C
LT1039M ......................................... –55°C to 125°C
Storage Temperature Range ................. – 65°C to 150°C
Lead Temperature (Soldering, 10 sec).................. 300°C
Driver (V+, V–) ................................................. ±16V
Receiver (VCC) ...................................................... 7V
Logic Inputs .................................................. V– to 25V
Receiver Inputs..................................................... ±30V
ON/OFF Input .............................................. GND to 12V
Driver Outputs ....................... (V– + 30V) to (V+ – 30V)
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PACKAGE/ORDER INFORMATION
TOP VIEW
ORDER PART
ORDER PART
TOP VIEW
NUMBER
+
NUMBER
1
2
3
4
5
6
7
8
9
V
CC
18
17
16
15
14
13
12
11
10
V
+
1
2
3
4
5
6
7
8
V
CC
16
15
14
13
12
11
10
9
V
ON/OFF
REC1 OUT
TR1 IN
BIAS
REC1 IN
TR1 OUT
REC2 IN
TR2 OUT
REC3 IN
TR3 OUT
LT1039CN16
LT1039CSW16
LT1039MJ16
LT1039CJ
LT1039CN
LT1039CSW
LT1039IN
LT1039ISW
LT1039MJ
REC1 OUT
TR1 IN
REC1 IN
TR1 OUT
REC2 IN
TR2 OUT
REC3 IN
TR3 OUT
REC2 OUT
TR2 IN
REC2 OUT
TR2 IN
REC3 OUT
TR3 IN
REC3 OUT
TR3 IN
–
GND
V
–
GND
V
J PACKAGE
N PACKAGE
N PACKAGE
16-LEAD CERDIP
16-LEAD PDIP
J PACKAGE
18-LEAD PDIP
18-LEAD CERDIP
SW PACKAGE
16-LEAD PLASTIC SO WIDE
SW PACKAGE
18-LEAD PLASTIC SO WIDE
TJMAX = 150°C, θJA = 100°C/ W (J)
T
JMAX = 150°C, θJA = 100°C/ W(J)
T
JMAX = 150°C, θJA = 140°C/ W (N)
TJMAX = 150°C, θJA = 120°C/ W(N)
TJMAX = 150°C, θJA = 150°C/ W (SW)
T
JMAX = 150°C, θJA = 120°C/ W(SW)
ELECTRICAL CHARACTERISTICS
The ● denotes specifications which apply over the full operating temperature range, otherwise specifications are at TA = 25°C.
PARAMETER
CONDITIONS
MIN
TYP
MAX
UNITS
+
–
Driver V = 12V, V = –12V, V
= 2.5V (Note 2)
ON/OFF
Output Voltage Swing
Load = 3k to Ground
Positive
Negative
+
+
●
●
V – 0.4
V – 0.1
V
V
–
–
V + 1.5
V + 1.0
Logic Input Voltage Levels
Logic Input Current
Input Low Level (V
Input High Level (V
= High)
= Low)
●
●
1.4
1.4
0.8
V
V
OUT
2.0
OUT
V
V
≥ 2.0V
≤ 0.8V
1
5
20
20
µA
µA
IN
IN
Output Short-Circuit Current
Sourcing Current, V
= 0V
= 0V
5
–5
15
–15
mA
mA
OUT
Sinking Current, V
OUT
Output Leakage Current
Supply Leakage Current
Slew Rate
Shutdown (Notes 3, 4), V
Shutdown (Note 3)
= ±18V, V = 0V
●
●
10 (25°C)
1 (25°C)
15
200
100
30
µA
µA
OUT
IN
R = 3k, C = 51pF
4
V/µs
mA
L
L
Supply Current
V
= Low
4
8
OUT
2
LT1039/LT1039-16
ELECTRICAL CHARACTERISTICS
The ● denotes specifications which apply over the full operating temperature range, otherwise specifications are at TA = 25°C.
PARAMETER
CONDITIONS
= 2.5V (Note 2)
ON/OFF
MIN
TYP
MAX
UNITS
Receiver V = 5V, V
CC
Input Voltage Thresholds
Input Low Level (V
Input High Level (V
= High)
= Low)
●
●
0.5
0.1
1.3
1.7
V
V
OUT
2.8
1.0
OUT
Hysteresis
●
●
0.4
30
V
Input Resistance
Output Voltage
kΩ
Output Low, I
Output High, I
= –1.6mA
= 160µA
●
●
0.4
4.8
0.5
V
V
OUT
3.5
OUT
Output Short-Circuit Current
Sourcing Current, V
= 0V (Note 5)
●
●
0.5
–10
1
mA
mA
OUT
Sinking Current, V
= V
OUT
CC
Output Leakage Current
Supply Current
Shutdown (Note 2), 0V ≤ V
≤ V , V = 0V
●
●
●
●
1
4
10
7
µA
mA
µA
OUT
CC IN
Supply Leakage Current
ON/OFF Pin Current
Shutdown (Note 3)
1 (25°C)
100
80
0V ≤ V
≤ 5V
–15
µA
ON/OFF
Note 1: Absolute Maximum Ratings are those values beyond which the life
of a device by be impaired.
Note 4: For T ≥ 100°C, leakage current is 350µA max.
A
Note 5: For T ≤ –25°C, output source current is 0.4mA.
A
Note 2: V
Note 3: V
= 5V for LT1039M grade devices.
ON/OFF
= 0.4V for –55°C ≤ T ≤ 100°C and V
= 0.2V for
ON/OFF
ON/OFF
A
100°C ≤ T ≤ 125°C. Does not apply to LT1039-16 part.
A
W
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TYPICAL PERFORMANCE CHARACTERISTICS
Driver Output Short-Circuit Current
Receiver Input Thresholds
ON/OFF Pin Thresholds
50
45
40
35
30
25
20
15
10
5
3.00
2.75
2.50
2.25
2.00
1.75
1.50
1.25
1.00
0.75
0.50
5.0
4.5
4.0
3.5
3.0
2.5
2.0
1.5
1.0
0.5
0
INPUT HIGH
INPUT LOW
SINKING
MINIMUM ON VOLTAGE
SOURCING
MINIMUM OFF VOLTAGE
0
–55
0
25
50
75 100 125
–55
0
25
50
75 100 125
–55
0
25
50
75
125
–25
–25
–25
100
TEMPERATURE (°C)
TEMPERATURE (°C)
TEMPERATURE (°C)
1039 G01
1039 G02
1039 G03
3
LT1039/LT1039-16
W
U
TYPICAL PERFORMANCE CHARACTERISTICS
Driver Output Leakage
in Shutdown
Receiver Output
Short-Circuit Current
Supply Current in Shutdown
1000
100
1000
100
100
10
SUPPLY CURRENT MEASURED
+
OUTPUT SINKING
INTO V AND V
CC
V
OUT
OUTPUT SOURCING
–30V
10
10
1
1
V
OUT
30V
1
0.1
–55 –25
–55 –25
0
25
50
75 100 125
–55 –25
0
25
50
75 100 125
0
25
50
75 100 125
TEMPERATURE (°C)
TEMPERATURE (°C)
TEMPERATURE (°C)
1039 G04
1039 G05
1039 G06
ON/OFF Pin Current vs Voltage
Driver Output Swing vs Current
+
40
35
30
25
20
15
10
5
V
–0.2
–0.4
OUTPUT HIGH
1.2
1.0
0.8
0.6
0.4
0.2
OUTPUT LOW
0
–5
–10
–
V
0
1
2
3
4
5
0
0.5 1.0 1.5 2.0 2.5 3.0 3.5 4.0 4.5 5.0
OUTPUT CURRENT (mA)
1039 G08
INPUT VOLTAGE (V)
1039 G07
Output Waveforms
Shutdown to Driver Output
10V
5V
5V
0V
RECEIVER
OUTPUT
OUTPUT
HIGH
DRIVER
OUTPUT
10V
0V
0V
DRIVER
OUTPUT
0V
OUTPUT
LOW
–10V
5V
DRIVER
OUTPUT
–5V
INPUT
–10V
5V
0V
ON/OFF
INPUT
1039 G09
V+ = 12V
2µs/DIV
V
V
– = –12V
CC = 5V
0V
1039 G10
V+ = 12V
V– = –12V
RL = 3k
1ms/DIV
RL = 3k
DRIVER OUTPUT CONNECTED TO RECEIVER INPUT
4
LT1039/LT1039-16
W
U
TYPICAL PERFORMANCE CHARACTERISTICS
Shutdown to Receiver Output
BIAS Pin Response Time
6V
4V
2V
0V
6V
4V
2V
0V
RECEIVER
OUTPUT
RECEIVER 1
OUTPUT
5V
0V
5V
0V
ON/OFF
INPUT
BIAS INPUT
(THRU 25kΩ)
1039 G11
1039 G12
VCC = 5V
1ms/DIV
VCC = 5V
0.2µs/DIV
U
U
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PIN FUNCTIONS
(Pin numbers listed are for 18-pin device)
V+, V– (Pins 1, 9): Driver Supply Pins. Supply current
drops to zero in shutdown mode. Driver outputs are in a
high impedance state when V+ and V– = 0V.
GND (Pin 10): Ground Pin.
TR IN (Pins 11, 13, 15): RS232 Driver Input Pins. Inputs
are TTL/CMOS compatible. Inputs should not be allowed
to float. Tie unused inputs to VCC.
BIAS (Pin 2): Keeps receiver 1 on while the LT1039 is in
theshutdownmode. LeaveBIASpinopenwhennotinuse.
See Applications Information for proper use.
REC OUT (Pins 12, 14, 16): Receiver Outputs with TTL/
CMOS Voltage Levels. Outputs are in a high impedance
state when in the shutdown mode to allow data line
sharing.Outputsarefullyshort-circuitprotectedtoground
or VCC with power on, off or in the shutdown mode.
RECIN(Pins3, 5, 7):ReceiverInputPins. AcceptsRS232
voltage levels (±30V) and has 0.4V of hysteresis to pro-
vide noise immunity. Input impedance is nominally 30kΩ.
TR OUT (Pins 4, 6, 8): Driver Outputs with RS232 Voltage
Levels. Outputs are in a high impedance state when in the
shutdown mode or when power is off (V+ and V– = 0V) to
allow data line sharing. Outputs are fully short-circuit
protected from V– + 30V to V+ – 30V with power on, off or
in the shutdown mode. Typical output breakdowns are
greater than ±45V and higher applied voltages will not
damage the device if moderately current limited.
ON/OFF (Pin 17): Controls the operation mode of the
LT1039 and is TTL/CMOS compatible. A logic low puts the
device in the shutdown mode which reduces input supply
currenttozeroandplacesbothdriverandreceiveroutputs
in a high impedance state.
VCC (Pin 18): 5V Power for Receivers.
5
LT1039/LT1039-16
U
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APPLICATIONS INFORMATION
The driver output stage of the LT1039 offers significantly
improved protection over older bipolar and CMOS de-
signs. In addition to current limiting, the driver output
can be externally forced to ±30V with no damage or
excessive current flow, and will not disrupt the supplies.
Sharing a Receiver Line
RS232
INPUT A
LT1039 #1
RECEIVER
LT1039 Driver
RS232
INPUT B
LOGIC
OUTPUT
LT1039 #2
RECEIVER
30V
LT1039
OUTPUT CAN
BE FORCED
EXTERNALLY
–30V
1039 AI01
LOGIC
INVERTER
ON/OFF
(CHANNEL SELECT)
INPUT
Some drivers have diodes connected between the out-
puts and the supplies, so externally applied voltages can
cause excessive supply voltage to develop
1039 AI04
Transceiver
Older RS232 Drivers and Other CMOS Drivers
+
LOGIC
TRANSMIT/RECEIVE
LINE
RS232
TRANSMIT/RECEIVE
LINE
V
LT1039 #1
DRIVER
WITH SOME DRIVERS,
EXTERNALLY APPLIED
VOLTAGE CAN FORCE
THE SUPPLIES
–
V
1039 AI02
LT1039 #2
RECEIVER
Placing the LT1039 in the shutdown mode (Pin 17 low)
puts both the driver and receiver outputs in a high imped-
ance state. This allows data line sharing and transceiver
applications.
LOGIC
INVERTER
ON/OFF
(TRANSMIT/RECEIVE)
INPUT
1039 AI05
Sharing a Transmitter Line
The shutdown mode also drops all supply currents (VCC,
V+, V–) to zero for power conscious systems.
LOGIC
INPUT A
LT1039 #1
DRIVER
RS232
TRANSMISSION
LINE
LOGIC
INPUT B
LT1039 #2
DRIVER
LOGIC
INVERTER
ON/OFF
(CHANNEL SELECT)
INPUT
1039 AI03
6
LT1039/LT1039-16
U
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APPLICATIONS INFORMATION
When driving CMOS logic from a receiver that will be used
in the shutdown mode and there is no other active receiver
ontheline,a51kresistorcanbeplacedfromthelogicinput
to VCC to force a definite logic level when the receiver
output is in a high impedance state.
Driver inputs should not be allowed to float. Any unused
inputs should be tied to VCC.
The BIAS pin is used to “keep alive” one receiver while in
the shutdown mode (all other circuitry being inactive).
This allows a system to be in shutdown and still have one
active receiver for transferring data.
Driving CMOS Logic from a Receiver
V
Keeping Alive One Receiver While in Shutdown
CC
LOGIC
SHUTDOWN
INPUT
CMOS
51k*
LOGIC
LT1039
RECEIVER
LOGIC
OUTPUT
RS232
INPUT
25k
*FORCES LOGIC INPUT STATE
WHEN V IS LOW
ON/OFF
INPUT
17
16
ON/OFF
2
3
BIAS
1039A AI06
ON/OFF
RS232
INPUT
LOGIC
OUTPUT
To protect against receiver input overloads in excess of
±30V, a voltage clamp can be placed on the data line and
still maintain RS232 compatibility.
LT1039
1039 AI09
Input Overvoltage Protection
It can also be used to make an RS232 compatible shut-
down control line. Driving the BIAS pin low through a
resistance of 24k to 30k keeps the receiver active. Do not
drive the BIAS pin directly from a logic output without the
series resistor. An unused BIAS pin should be left open.
1k
RECEIVER
RS232
INPUT
LOGIC
OUTPUT
30k
30V
30V
5.6k
RS232 Compatible Shutdown Control Line
1039 AI07
25k
The receiver input impedance of the LT1039 is nominally
30kΩ. For applications requiring a 5kΩ input impedance,
a 5.6k resistor can be connected from the receiver input to
ground.
17
16
2
3
BIAS
ON/OFF
RS232
SHUTDOWN
INPUT
LT1039
5kΩ Impedance Matching
1039A AI10
RECEIVER
RS232
INPUT
LOGIC
OUTPUT
30k
5.6k
1039 AI08
7
LT1039/LT1039-16
U
PACKAGE DESCRIPTION Dimensions in inches (millimeters) unless otherwise noted.
J Package
16-Lead CERDIP (Narrow 0.300, Hermetic)
(LTC DWG # 05-08-1110)
0.840
(21.336)
CORNER LEADS OPTION
(4 PLCS)
0.005
(0.127)
MIN
MAX
16
10
15
14
12
11
9
8
13
0.023 – 0.045
(0.584 – 1.143)
HALF LEAD
OPTION
0.220 – 0.310
(5.588 – 7.874)
0.025
(0.635)
RAD TYP
0.045 – 0.068
(1.143 – 1.727)
FULL LEAD
OPTION
2
3
5
1
4
6
7
0.200
(5.080)
MAX
0.300 BSC
(0.762 BSC)
0.015 – 0.060
(0.380 – 1.520)
0.008 – 0.018
(0.203 – 0.457)
0° – 15°
0.045 – 0.068
(1.143 – 1.727)
0.100 ± 0.010
(2.540 ± 0.254)
0.125
(3.175)
MIN
0.014 – 0.026
NOTE: LEAD DIMENSIONS APPLY TO SOLDER DIP/PLATE
OR TIN PLATE LEADS
(0.360 – 0.660)
J16 1197
J Package
18-Lead CERDIP (Narrow 0.300, Hermetic)
(LTC DWG # 05-08-1110)
0.960
(24.384)
MAX
CORNER LEADS OPTION
(4 PLCS)
0.005
(0.127)
MIN
17
16
18
15
14
11
13
12
10
0.023 – 0.045
(0.584 – 1.143)
HALF LEAD
OPTION
0.220 – 0.310
(5.590 – 7.870)
0.025
(0.635)
RAD TYP
0.045 – 0.068
(1.143 – 1.727)
FULL LEAD
OPTION
3
1
2
4
5
6
7
8
9
0.200
(5.080)
MAX
0.300 BSC
(0.762 BSC)
0.015 – 0.060
(0.380 – 1.520)
0.008 – 0.018
(0.203 – 0.457)
0° – 15°
0.045 – 0.068
(1.143 – 1.727)
0.100 ± 0.010
(2.540 ± 0.254)
0.125
(3.175)
MIN
NOTE: LEAD DIMENSIONS APPLY TO SOLDER DIP/PLATE
OR TIN PLATE LEADS
0.014 – 0.026
(0.360 – 0.660)
J18 1197
8
LT1039/LT1039-16
U
PACKAGE DESCRIPTION Dimensions in inches (millimeters) unless otherwise noted.
N Package
16-Lead PDIP (Narrow 0.300)
(LTC DWG # 05-08-1510)
0.770*
(19.558)
MAX
14
12
10
9
8
15
13
11
16
0.255 ± 0.015*
(6.477 ± 0.381)
2
1
3
4
6
5
7
0.300 – 0.325
0.130 ± 0.005
0.045 – 0.065
(7.620 – 8.255)
(3.302 ± 0.127)
(1.143 – 1.651)
0.020
(0.508)
MIN
0.065
(1.651)
TYP
0.009 – 0.015
(0.229 – 0.381)
+0.035
–0.015
0.325
0.125
(3.175)
MIN
0.018 ± 0.003
(0.457 ± 0.076)
0.100 ± 0.010
(2.540 ± 0.254)
+0.889
8.255
(
)
–0.381
*THESE DIMENSIONS DO NOT INCLUDE MOLD FLASH OR PROTRUSIONS.
MOLD FLASH OR PROTRUSIONS SHALL NOT EXCEED 0.010 INCH (0.254mm)
N16 1197
N Package
18-Lead PDIP (Narrow 0.300)
(LTC DWG # 05-08-1510)
0.900*
(22.860)
MAX
18
17
16
15
14
13
12
11
10
0.255 ± 0.015*
(6.477 ± 0.381)
1
2
3
5
6
9
4
7
8
0.300 – 0.325
(7.620 – 8.255)
0.130 ± 0.005
(3.302 ± 0.127)
0.045 – 0.065
(1.143 – 1.651)
0.020
(0.508)
MIN
0.065
(1.651)
TYP
0.009 – 0.015
(0.229 – 0.381)
+0.035
0.325
0.005
(0.127)
MIN
0.100 ± 0.010
(2.540 ± 0.254)
–0.015
0.125
(3.175)
MIN
0.018 ± 0.003
+0.889
8.255
(0.457 ± 0.076)
(
)
–0.381
N18 1197
*THESE DIMENSIONS DO NOT INCLUDE MOLD FLASH OR PROTRUSIONS.
MOLD FLASH OR PROTRUSIONS SHALL NOT EXCEED 0.010 INCH (0.254mm)
9
LT1039/LT1039-16
U
PACKAGE DESCRIPTION Dimensions in inches (millimeters) unless otherwise noted.
SW Package
16-Lead Plastic Small Outline (Wide 0.300)
(LTC DWG # 05-08-1620)
0.398 – 0.413*
(10.109 – 10.490)
15 14
12
10
11
9
16
13
0.394 – 0.419
(10.007 – 10.643)
NOTE 1
2
3
5
7
8
1
4
6
0.291 – 0.299**
(7.391 – 7.595)
0.037 – 0.045
(0.940 – 1.143)
0.093 – 0.104
(2.362 – 2.642)
0.010 – 0.029
(0.254 – 0.737)
× 45°
0° – 8° TYP
0.050
(1.270)
TYP
0.004 – 0.012
(0.102 – 0.305)
0.009 – 0.013
NOTE 1
(0.229 – 0.330)
0.014 – 0.019
0.016 – 0.050
(0.356 – 0.482)
TYP
(0.406 – 1.270)
NOTE:
1. PIN 1 IDENT, NOTCH ON TOP AND CAVITIES ON THE BOTTOM OF PACKAGES ARE THE MANUFACTURING OPTIONS.
THE PART MAY BE SUPPLIED WITH OR WITHOUT ANY OF THE OPTIONS
S16 (WIDE) 0396
*DIMENSION DOES NOT INCLUDE MOLD FLASH. MOLD FLASH SHALL NOT EXCEED 0.006" (0.152mm) PER SIDE
**DIMENSION DOES NOT INCLUDE INTERLEAD FLASH. INTERLEAD FLASH SHALL NOT EXCEED 0.010" (0.254mm) PER SIDE
10
LT1039/LT1039-16
U
PACKAGE DESCRIPTION Dimensions in inches (millimeters) unless otherwise noted.
SW Package
18-Lead Plastic Small Outline (Wide 0.300)
(LTC DWG # 05-08-1620)
0.447 – 0.463*
(11.354 – 11.760)
14 13
11
15
12
10
18 17 16
0.394 – 0.419
(10.007 – 10.643)
SEE NOTE
0.291 – 0.299**
(7.391 – 7.595)
2
3
5
7
8
9
1
4
6
0.037 – 0.045
(0.940 – 1.143)
0.093 – 0.104
(2.362 – 2.642)
0.010 – 0.029
(0.254 – 0.737)
× 45°
0° – 8° TYP
0.050
(1.270)
TYP
0.004 – 0.012
0.009 – 0.013
(0.102 – 0.305)
NOTE 1
(0.229 – 0.330)
0.014 – 0.019
0.016 – 0.050
(0.356 – 0.482)
TYP
(0.406 – 1.270)
NOTE:
S18 (WIDE) 0396
1. PIN 1 IDENT, NOTCH ON TOP AND CAVITIES ON THE BOTTOM OF PACKAGES ARE THE MANUFACTURING OPTIONS.
THE PART MAY BE SUPPLIED WITH OR WITHOUT ANY OF THE OPTIONS
*DIMENSION DOES NOT INCLUDE MOLD FLASH. MOLD FLASH SHALL NOT EXCEED 0.006" (0.152mm) PER SIDE
**DIMENSION DOES NOT INCLUDE INTERLEAD FLASH. INTERLEAD FLASH SHALL NOT EXCEED 0.010" (0.254mm) PER SIDE
Information furnished by Linear Technology Corporation is believed to be accurate and reliable.
However, no responsibility is assumed for its use. Linear Technology Corporation makes no represen-
tationthattheinterconnectionofitscircuitsasdescribedhereinwillnotinfringeonexistingpatentrights.
11
LT1039/LT1039-16
U
TYPICAL APPLICATION
LT1080A (Driver/Receiver with Power Supply) Driving an LT1039
SHUTDOWN
5V
18
17
18
17
ON/OFF
LT1080A
V
V
ON/OFF
LT1039
CC
CC
TTL IN
TTL IN
TTL IN
RS232 OUT
RS232 OUT
RS232 OUT
RS232 OUT
TTL IN
TTL OUT
TTL OUT
TTL IN
RS232 OUT
RS232 IN
RS232 IN
RS232 IN
TTL OUT
5k
30k
30k
30k
TTL OUT
TTLOUT
RS232 IN
RS232 IN
5k
2
+
C1
+
1µF
4
5
–
+
C1
C2
3
7
1
9
+
–
+
V
V
V
V
+
1µF
6
–
–
C2
GND
16
GND
10
+
1µF
+
1µF
1039 TA03
RELATED PARTS
PART NUMBER
DESCRIPTION
COMMENTS
Industry Standard
LTC®485
Low Power RS485 Transceiver
LT1039A/LT1039A-16 Triple RS232 Driver/Receiver with Shutdown
±15kV ESD Protection
±15kV ESD Protection
LT1137A
5V 3-Driver/5-Receiver RS232 Transceiver
5V 2-Driver/2-Receiver RS232 Transceiver
V.35 Transceiver
LT1180A/LT1181A
LTC1345
Industry Standard, 0.1µF Capacitors
Single 5V Supply Using 0.1µF Capacitors
LTC1348
3.3V 3-Driver/5-Receiver RS232 Transceiver
Operates from 3.3V to 5V Supplies, 5 Receivers Active in Shutdown
1039fc LT/TP 0599 2K REV C • PRINTED IN USA
LINEAR TECHNOLOGY CORPORATION 1991
12 LinearTechnology Corporation
1630 McCarthy Blvd., Milpitas, CA 95035-7417
●
●
(408)432-1900 FAX:(408)434-0507 www.linear-tech.com
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