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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.