High Speed Differential Comparators; Features; Connection Diagrams; Logic Diagram - JBL GTO 24001 Service Manual

GTO24001
LM161/LM361

High Speed Differential Comparators

General Description

The LM161/LM361 is a very high speed differential input,
complementary TTL output voltage comparator with im-
proved 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 voltage.
Typically delay varies only 3 ns for over-drive variations of 5
mV to 500 mV. It may be operated from op amp supplies
±
(
15V).
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.

Connection Diagrams

Dual-In-Line Package
Order Number LM361M, LM361MX or LM361N
See NS Package Number M14A or N14A
Metal Can Package
Order Number LM161H/883 or LM361H
See NS Package Number H10C
© 2004 National Semiconductor Corporation
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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

Logic Diagram

*Output is low when current is drawn from strobe pin.
21
August 2000
±
15V
00570804
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