NSC LM361J Datasheet

LM161/LM361
High Speed Differential Comparators

General Description

The LM161/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.Thedevicehasbeenoptimizedfor
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 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 Logic Diagram

Dual-In-Line Package

DS005708-2

Top View

Order Number LM361M, LM361MX or LM361N

See NS Package Number M14A or N14A

Metal Can Package

DS005708-3

Order Number LM161H/883 or LM361H

See NS Package Number H10C

DS005708-4

*

Output is low when current is drawn from strobe pin.

August 2000

LM161/LM361 High Speed Differential Comparators

© 2000 National Semiconductor Corporation DS005708 www.national.com

Absolute Maximum Ratings (Note 1)

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

MIN

T

MAX

LM161 −55˚C to +125˚C

−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 5V 15V
LM361 5V 15V

Supply Voltage V

−

LM161 −6V −15V
LM361 −6V −15V

Supply Voltage V

CC

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

ESD Tolerance (Note 5) 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 andTheir Effect on
Product Reliability” for other methods of soldering surface
mount devices.

Electrical Characteristics

(V+= +10V, VCC= +5V, V−= −10V, T

MIN

≤ TA≤ T

MAX

, unless noted)

Limits

Parameter Conditions LM161 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

LM161/LM361

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Electrical Characteristics (Continued)

(V+= +10V, VCC= +5V, V−= −10V, T

MIN

≤ TA≤ T

MAX

, unless noted)

Limits

Parameter Conditions LM161 LM361 Units

Min Typ Max Min Typ Max

V

+

=10V,

V

−

=−10V,VCC=5.25V,

0˚C≤T

A

≤70˚C

Supply Current I

−

10 mA

V

+

=10V, V−=−10V,

Supply Current I

CC

VCC=5.25V, 18 mA

−55˚C≤T

A

≤125˚C

V

+

=10V, V−=−10V,

Supply Current I

CC

VCC=5.25V, 20 mA
0˚C≤T

A

≤70˚C

Transient Response V

IN

= 50 mV overdrive

(Note 3)

Propagation Delay Time (t

pd(0)

)TA=25˚C 14 20 14 20 ns

Propagation Delay Time (t

pd(1)

)TA=25˚C 14 20 14 20 ns

Delay Between Output A and B T

A

=25˚C 2 5 2 5 ns

Strobe Delay Time (t

pd(0)

)T

A

=25˚C 8 8 ns

Strobe Delay Time (t

pd(1)

)T

A

=25˚C 8 8 ns

Note 1: The device may be damaged by use beyond the maximum ratings.
Note 2: Typical thermal impedances are as follows:

Note 3: Measurements using AC Test circuit, Fanout = 1. The devices are faster at low supply voltages.
Note 4: Refer to RETS161X for LM161H and LM161J military specifications.
Note 5: Human body model, 1.5 kΩ in series with 100 pF.

Typical Performance Characteristics

DS005708-17

Offset Voltage

DS005708-8

Input Currents vs Ambient
Temperature

DS005708-9

Input Characteristics

DS005708-10

LM161/LM361

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