NSC LM361N, LM361MX, LM361MWC, LM361M Datasheet

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 volt­age. Typically delay varies only 3 ns for over-drive variations
of 5 mV to 500 mV. It may be operated fromopamp supplies
(

±

15V).

Complementary outputs having maximum skew are pro­vided. Applications involve high speed analog to digital con­verters 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:

±

15V

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

LM161/LM261/LM361 High Speed Differential Comparators

© 1999 National Semiconductor Corporation DS005708 www.national.com

Logic Diagram

DS005708-4

*

Output is low when current is drawn from strobe pin.

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Absolute Maximum Ratings (Note 2)

If Military/Aerospace specified devices are required,
please contact the National Semiconductor Sales Office/
Distributors for availability and specifications.

Positive Supply Voltage, V

+

+16V

Negative Supply Voltage, V

−

−16V

Gate Supply Voltage, V

CC

+7V
Output Voltage +7V
Differential Input Voltage

±

5V

Input Common Mode Voltage

±

6V
Power Dissipation 600 mW
Storage Temperature Range −65˚C to +150˚C
Operating Temperature Range T

MINTMAX

LM161 −55˚C to +125˚C
LM261 −25˚C to +85˚C

LM361 0˚C to +70˚C
Lead Temp. (Soldering, 10 seconds) 260˚C
For Any Device Lead Below V

−

0.3V

Operating Conditions

Min Typ Max

Supply Voltage V

+

LM161/LM261 5V 15V
LM361 5V 15V

Supply Voltage V

−

LM161/LM261 −6V −15V
LM361 −6V −15V

Supply Voltage V

CC

LM161/LM261 4.5V 5V 5.5V
LM361 4.75V 5V 5.25V

ESD Tolerance (Note 6) 1600V
Soldering Information

Dual-In-Line Package

Soldering (10 seconds) 260˚C

Small Outline Package

Vapor Phase (60 seconds) 215˚C
Infrared (15 seconds) 220˚C

See AN-450 “Surface Mounting Methods and Their Effect on
Product Reliability” for other methods of soldering surface
mount devices.

Electrical Characteristics

(V

+

=

+10V, V

CC

=

+5V, V

−

=

−10V, T

MIN

≤ TA≤ T

MAX

, unless noted)

Limits

Parameter Conditions LM161/LM261 LM361 Units

Min Typ Max Min Typ Max

Input Offset Voltage 1 3 1 5 mV
Input Bias Current T

A

=

25˚C 5 10 µA

20 30 µA

Input Offset Current T

A

=

25˚C 2 2 µA

35µA

Voltage Gain T

A

=

25˚C 3 3 V/mV

Input Resistance T

A

=

25˚C, f=1 kHz 20 20 kΩ

Logical “1” Output Voltage V

CC

=

4.75V, 2.4 3.3 2.4 3.3 V

I

SOURCE

=

−0.5 mA

Logical “0” Output Voltage V

CC

=

4.75V, 0.4 0.4 V

I

SINK

=

6.4 mA

Strobe Input “1” Current V

CC

=

5.25V, 200 200 µA

(Output Enabled) V

STROBE

=

2.4V

Strobe Input “0” Current V

CC

=

5.25V, −1.6 −1.6 mA

(Output Disabled) V

STROBE

=

0.4V

Strobe Input “0” Voltage V

CC

=

4.75V 0.8 0.8 V

Strobe Input “1” Voltage V

CC

=

4.75V 2 2 V

Output Short Circuit Current V

CC

=

5.25V, V

OUT

=

0V −18 −55 −18 −55 mA

V

+

=

10V, V

−

=

−10V,

V

CC

=

5.25V,

−55˚C≤T

A

≤125˚C

Supply Current I

+

4.5 mA

V

+

=

10V, V

−

=

−10V,

V

CC

=

5.25V,

0˚C≤T

A

≤70˚C

Supply Current I

+

5mA

V

+

=

10V, V

−

=

−10V,

V

CC

=

5.25V,

−55˚C≤T

A

≤125˚C

Supply Current I

−

10 mA

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