LM161/LM261/LM361

High Speed Differential Comparators

General Description

The LM161/LM261/LM361 is a very high speed differential

input, complementary TTL output voltage comparator with

improved characteristics over the SE529/NE529 for which it

is a pin-for-pin replacement. The device has been optimized

for greater speed performance and lower input offset volt-

age. Typically delay varies only 3 ns for over-drive variations

of 5 mV to 500 mV. It may be operated from op amp supplies

Complementary outputs having maximum skew are pro-

vided. Applications involve high speed analog to digital con-

verters and zero-crossing detectors in disk file systems.

Features

n Independent strobes

n Guaranteed high speed:

20 ns max

n Tight delay matching on both outputs

n Complementary TTL outputs

n Operates from op amp supplies:

n Low speed variation with overdrive variation

n Low input offset voltage

n Versatile supply voltage range

Connection Diagrams

Dual-In-Line Package

DS005708-2

Top View

Order Number LM161J

LM361M or LM361N

See NS Package Number M14A or N14A

Metal Can Package

DS005708-3

Order Number LM161H/883 (Note 1), or LM361H

See NS Package Number H10C

Note 1: Also available per SMD #5962-8757203

May 1999

© 1999 National Semiconductor Corporation

DS005708

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