-

+

OUTPUT

1

2

3

5

4

-

GND

+

LM397

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SNOS977D – MAY 2001 – REVISED MARCH 2013

LM397 Single General Purpose Voltage Comparator

Check for Samples: LM397

1

FEATURES

DESCRIPTION

The LM397 is a single voltage comparator with an

2

•

input common mode that includes ground. The

Specified).

LM397 is designed to operate from a single 5V to

•

5-Pin SOT-23 Package

30V power supply or a split power supply. Its low

•

Industrial Operating Range

−40°C to +85°C

supply

current

is

virtually

independent

of

the

magnitude of the supply voltage.

•

Single or Dual Power Supplies

The LM397 features an open collector output stage.

•

Wide Supply Voltage Range 5V to 30V

This allows the connection of an external resistor at

•

Low Supply Current 300µA

the output. The output can directly interface with TTL,

•

Low Input Bias Current 7nA

CMOS and other logic levels, by tying the resistor to

•

Low Input Offset Current ±1nA

different voltage levels (level translator).

•

Low Input Offset Voltage ±2mV

The LM397 is available in space saving 5-Pin SOT-

23 package and pin compatible to TI’s TL331, single

•

Response Time 440ns (50mV Overdrive)

differential comparator.

•

APPLICATIONS

•

A/D Converters

•

Pulse, Square Wave Generators

•

Peak Detector

•

Industrial Applications

Typical Circuit

Connection Diagram

Top View

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.

1

Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of

Texas Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.

2

All trademarks are the property of their respective owners.

PRODUCTION DATA information is current as of publication date.

Copyright © 2001–2013, Texas Instruments Incorporated

Products conform to specifications per the terms of the Texas

Instruments standard warranty. Production processing does not

necessarily include testing of all parameters.