Datasheet

1
LT1032
1032fe
Quad Low Power
Line Driver
■
Low Operating Voltage: ±5V to ±15V
■
500µA Supply Current
■
Zero Supply Current when Shut Down
■
Outputs Can Be Driven ±30V
■
Thermal Limiting
■
Output “Open” when Off (Three-State)
■
10mA Output Drive
■
Pinout Similar to 1488
The LT
®
1032 is a RS232 and RS423 line driver that
operates over a ±5V to ±15V range on low supply current
and can be shut down to zero supply current. Outputs are
fully protected from externally applied voltages of ±30V by
both current and thermal limiting. Since the output swings
to within 200mV of the positive supply and 600mV of the
negative supply, power supply needs are minimized.
Also included is a strobe pin to force all outputs low
independent of input or shutdown conditions. Further,
slew rate can be adjusted with a resistor connected to the
supply.
A major advantage of the LT1032 is the high impedance
output state when off or powered down.
For applications requiring dual or triple RS232 driver/
receiver devices, see the LT1180A (dual), LT1039A (triple)
or the LT1130A data sheets.
■
RS232
■
Power Supply Inverter
■
Micropower Interface
■
Level Translator
RS232 Line Driver
OUTPUT CURRENT (mA)
0
OUTPUT VOLTAGE REFERRED TO SUPPLIES (V)
0.4
V
+
8
LT1032 • TA02
0.8
0.4
V
–
2
4
6
10
0.2
1.0
0.6
0.2
V
OUT
HIGH
V
OUT
LOW
1
2
3
4
5
6
7
14
13
12
11
10
9
8
–6V
INPUT
OUTPUT
INPUT
OUTPUT
GND
6V
STROBE*
INPUT
OUTPUT
INPUT
OUTPUT
RESPONSE TIME
CONTROL*
ON/OFF
(0V TO 5V)
†
*NO CONNECTION NEEDED WHEN NOT USED
†
5V = ON LT1032 • TA01
LT1032
Output Swing vs Output Current
FEATURES
DESCRIPTIO
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APPLICATIO S
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TYPICAL APPLICATIO
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, LTC and LT are registered trademarks of Linear Technology Corporation.