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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.

LM397

SNOS977F – MAY 2001 – REVISED MAY 2016

LM397 Single General-Purpose Voltage Comparator

1

1 Features

1

•

TA = 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 5 V to 30 V

•

Low Supply Current 300 µA

•

Low Input Bias Current 7 nA

•

Low Input Offset Current ±1 nA

•

Low Input Offset Voltage ±2 mV

•

Response Time 440 ns (50-mV Overdrive)

•

Input Common-Mode Voltage 0 to VS – 1.5 V

2 Applications

•

A/D Converters

•

Pulse, Square-Wave Generators

•

Peak Detector

•

Industrial Applications

3 Description

The LM397 device is a single voltage comparator

with an input common mode that includes ground.

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

to 30-V 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 the space-saving 5-Pin

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

a single differential comparator.

Device Information(1)

PART NUMBER

PACKAGE

BODY SIZE (NOM)

LM397

SOT-23 (5)

2.90 mm × 1.60 mm

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

the end of the data sheet.

Typical Circuit