SNOS977D – MAY 2001 – REVISED MARCH 2013
LM397 Single General Purpose Voltage Comparator
Check for Samples:
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FEATURES
•
(T
A
= 25°C. Typical Values Unless Otherwise
Specified).
5-Pin SOT-23 Package
Industrial Operating Range
−40°C
to +85°C
Single or Dual Power Supplies
Wide Supply Voltage Range 5V to 30V
Low Supply Current 300µA
Low Input Bias Current 7nA
Low Input Offset Current ±1nA
Low Input Offset Voltage ±2mV
Response Time 440ns (50mV Overdrive)
Input Common Mode Voltage 0 to V
S
- 1.5V
DESCRIPTION
The LM397 is a single voltage comparator with an
input common mode that includes ground. The
LM397 is designed to operate from a single 5V to
30V power supply or a split power supply. Its low
supply current is virtually independent of the
magnitude of the supply voltage.
The LM397 features an open collector output stage.
This allows the connection of an external resistor at
the output. The output can directly interface with TTL,
CMOS and other logic levels, by tying the resistor to
different voltage levels (level translator).
The LM397 is available in space saving 5-Pin SOT-
23 package and pin compatible to TI’s TL331, single
differential comparator.
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APPLICATIONS
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A/D Converters
Pulse, Square Wave Generators
Peak Detector
Industrial Applications
Connection Diagram
Top View
V
IN
-
Typical Circuit
V
S
1
5
V
S
R
1
V
IN
-
+
R
PULL-UP
V
O
2
GND
V
IN
+
3
4
OUTPUT
R
3
R
2
Figure 1. 5-Pin SOT-23 Package
See Package Number DBV0005A
Figure 2. Inverting Comparator with Hysteresis
These devices have limited built-in ESD protection. The leads should be shorted together or the device placed in conductive foam
during storage or handling to prevent electrostatic damage to the MOS gates.
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Copyright © 2001–2013, Texas Instruments Incorporated
PRODUCTION DATA information is current as of publication date.
Products conform to specifications per the terms of the Texas
Instruments standard warranty. Production processing does not
necessarily include testing of all parameters.
TI [ TEXAS INSTRUMENTS ]
