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LM397

SNOS977E – MAY 2001 – REVISED OCTOBER 2015

LM397 Single General-Purpose Voltage Comparator

1 Features

3 Description

The LM397 device is a single voltage comparator

1

•

with an input common mode that includes ground.

Specified.

The LM397 is designed to operate from a single 5-V

•

5-Pin SOT-23 Package

to 30-V 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

•

Wide Supply Voltage Range 5 V to 30 V

The LM397 features an open-collector output stage.

This allows the connection of an external resistor at

•

Low Supply Current 300 µA

the output. The output can directly interface with TTL,

•

Low Input Bias Current 7 nA

CMOS and other logic levels, by tying the resistor to

•

Low Input Offset Current ±1 nA

different voltage levels (level translator).

•

Low Input Offset Voltage ±2 mV

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

•

Response Time 440 ns (50-mV Overdrive)

SOT-23 package and is pin-compatible to TI’s TL331,

a single differential comparator.

•

Device Information(1)

2 Applications

PART NUMBER

PACKAGE

BODY SIZE (NOM)

•

A/D Converters

LM397

SOT-23 (5)

2.90 mm × 1.60 mm

•

Pulse, Square-Wave Generators

(1) For all available packages, see the orderable addendum at

•

Peak Detector

the end of the data sheet.

•

Industrial Applications

Typical Circuit

1

An IMPORTANT NOTICE at the end of this data sheet addresses availability, warranty, changes, use in safety-critical applications,

intellectual property matters and other important disclaimers. PRODUCTION DATA.