LT1039-16 Linear Technology, LT1039-16 Datasheet

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LT1039-16

Manufacturer Part Number
LT1039-16
Description
RS232 Driver/Receiver with Shutdown
Manufacturer
Linear Technology
Datasheet
FEATURES
TYPICAL APPLICATIO
APPLICATIO S
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
Triple Driver/Receiver
No Supply Current in Shutdown
30k Input Impedance
Meets All RS232 Specifications
16-Pin Version—Pin Compatible with MC145406
Available in SO Package
15kV ESD: LT1039A
RS232 Interface
Terminals
Modems
30V Input Range
*BIAS PIN USED
TO KEEP THE
RECEIVER ON
WHILE IN SHUTDOWN
U
RS232 OUT
RS232 OUT
RS232 OUT
RS232 IN
RS232 IN
RS232 IN
BIAS*
– 12V
12V
1
2
3
4
5
6
7
8
9
V
V
+
U
30k
30k
30k
LT1039
GND
1039 TA01
V
CC
18
17
16
15
14
13
12
11
10
5V
ON/OFF
LOGIC
LOGIC
LOGIC
LOGIC
LOGIC
LOGIC
DESCRIPTIO
The LT
cludes shutdown. Each receiver will accept up to 30V
input and can drive either TTL or CMOS logic. The RS232
drivers accept TTL logic inputs and output RS232 voltage
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.
A BIAS pin allows one receiver to be kept on while the rest
of the part is shut down.
The LT1039 is also available in the 16-pin version,
without shutdown or BIAS pin functions.
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.
, LTC and LT are registered trademarks of Linear Technology Corporation.
®
1039 is a triple RS232 driver/receiver that in-
– 0.5
1.5
1.0
0.5
V
V
+
0
RS232 Driver/Receiver
2
U
Driver Output Swing
OUTPUT CURRENT (mA)
NEGATIVE
LT1039/LT1039-16
4
with Shutdown
POSITIVE
6
8
1039 TA02
10
1

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LT1039-16 Summary of contents

Page 1

... LTC and LT are registered trademarks of Linear Technology Corporation LT1039 17 ON/OFF 16 LOGIC 30k 15 LOGIC 14 LOGIC 30k 13 LOGIC 12 LOGIC 30k 11 LOGIC 10 GND 1039 TA01 LT1039/LT1039-16 RS232 Driver/Receiver with Shutdown U Driver Output Swing + V POSITIVE – 0.5 1.5 NEGATIVE 1.0 0.5 – OUTPUT CURRENT (mA) 1039 TA02 1 ...

Page 2

... LT1039/LT1039- ABSOLUTE MAXIMUM Supply Voltage + – Driver ( ................................................. 16V Receiver (V ) ...................................................... 7V CC Logic Inputs .................................................. V Receiver Inputs ..................................................... 30V ON/OFF Input .............................................. GND to 12V – Driver Outputs ....................... (V U PACKAGE/ORDER INFORMATION TOP VIEW + REC1 OUT REC1 TR1 IN TR1 OUT 14 4 REC2 OUT ...

Page 3

... Note 1: Absolute Maximum Ratings are those values beyond which the life of a device by be impaired. Note for LT1039M grade devices. ON/OFF Note 0.4V for – 100 C and V ON/OFF A 100 C T 125 C. Does not apply to LT1039-16 part TYPICAL PERFORMANCE CHARACTERISTICS Driver Output Short-Circuit Current ...

Page 4

... LT1039/LT1039- TYPICAL PERFORMANCE CHARACTERISTICS Supply Current in Shutdown 1000 SUPPLY CURRENT MEASURED + INTO V AND V CC 100 10 1 –55 – 100 125 TEMPERATURE ( C) 1039 G04 ON/OFF Pin Current vs Voltage – 5 – INPUT VOLTAGE (V) Output Waveforms ...

Page 5

... LT1039 and is TTL/CMOS compatible. A logic low puts the + – and V = 0V) to device in the shutdown mode which reduces input supply current to zero and places both driver and receiver outputs in a high impedance state. V (Pin 18): 5V Power for Receivers. CC LT1039/LT1039-16 1039 G12 = 5V 0.2 s/DIV . CC 5 ...

Page 6

... LT1039/LT1039- 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. ...

Page 7

... Do not drive the BIAS pin directly from a logic output without the LOGIC 30k OUTPUT series resistor. An unused BIAS pin should be left open. 1039 AI07 LOGIC OUTPUT 1039 AI08 LT1039/LT1039- LOGIC SHUTDOWN INPUT 25k 2 BIAS 17 ...

Page 8

... LT1039/LT1039-16 PACKAGE DESCRIPTION CORNER LEADS OPTION (4 PLCS) 0.045 – 0.068 (1.143 – 1.727) FULL LEAD OPTION 0.300 BSC (0.762 BSC) 0.008 – 0.018 0 – 15 (0.203 – 0.457) NOTE: LEAD DIMENSIONS APPLY TO SOLDER DIP/PLATE OR TIN PLATE LEADS CORNER LEADS OPTION (4 PLCS) 0.023 – 0.045 (0.584 – ...

Page 9

... MIN 0.005 0.125 (0.127) (3.175) MIN MIN 0.100 0.010 (2.540 0.254) LT1039/LT1039-16 0.770* (19.558) MAX 0.045 – 0.065 (1.143 – 1.651) 0.065 (1.651) TYP ...

Page 10

... LT1039/LT1039-16 PACKAGE DESCRIPTION 0.291 – 0.299** (7.391 – 7.595) 0.010 – 0.029 (0.254 – 0.737) 0.009 – 0.013 NOTE 1 (0.229 – 0.330) 0.016 – 0.050 (0.406 – 1.270) NOTE: 1. PIN 1 IDENT, NOTCH ON TOP AND CAVITIES ON THE BOTTOM OF PACKAGES ARE THE MANUFACTURING OPTIONS. ...

Page 11

... SEE NOTE 0.093 – 0.104 45 (2.362 – 2.642) 0 – 8 TYP 0.050 (1.270) TYP 0.014 – 0.019 (0.356 – 0.482) TYP LT1039/LT1039- 0.394 – 0.419 (10.007 – 10.643 0.037 – 0.045 (0.940 – 1.143) 0.004 – 0.012 (0.102 – ...

Page 12

... LT1039/LT1039-16 U TYPICAL APPLICATION LT1080A (Driver/Receiver with Power Supply) Driving an LT1039 SHUTDOWN 18 ON/OFF LT1080A TTL IN TTL IN TTL OUT TTL OUT – – C2 RELATED PARTS PART NUMBER DESCRIPTION ® LTC 485 Low Power RS485 Transceiver LT1039A/LT1039A-16 Triple RS232 Driver/Receiver with Shutdown ...

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