LM361 高速互补输出电压比较器

LM161/LM261/LM361

High Speed Differential Comparators

General Description

The LM161/LM261/LM361is a very high speed differential input,complementary TTL output voltage comparator with improved characteristics over the SE529/NE529for 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 3ns for over-drive variations of 5mV to 500mV.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.

Features

n Independent strobes

n Guaranteed high speed:20ns 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/LM361High Speed Differential Comparators

©1999National Semiconductor Corporation

Logic Diagram

DS005708-4 *Output is low when current is drawn from strobe pin.

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Absolute Maximum Ratings(Note2)

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 Dissipation600mW Storage Temperature Range−65˚C to+150˚C Operating Temperature Range T MIN T MAX LM161−55˚C to+125˚C LM261−25˚C to+85˚C LM3610˚C to+70˚C Lead Temp.(Soldering,10seconds)260˚C For Any Device Lead Below V−0.3V Operating Conditions

Min Typ Max Supply Voltage V+

LM161/LM2615V15V LM3615V15V Supply Voltage V−

LM161/LM261−6V−15V LM361−6V−15V Supply Voltage V CC

LM161/LM261 4.5V5V 5.5V LM361 4.75V5V 5.25V

ESD Tolerance(Note6)1600V Soldering Information

Dual-In-Line Package

Soldering(10seconds)260˚C Small Outline Package

Vapor Phase(60seconds)215˚C Infrared(15seconds)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≤T A≤T MAX,unless noted)

Limits

Parameter Conditions LM161/LM261LM361Units

Min Typ Max Min Typ Max

Input Offset Voltage1315mV Input Bias Current T A=25˚C510µA

2030µA Input Offset Current T A=25˚C22µA

35µA Voltage Gain T A=25˚C33V/mV Input Resistance T A=25˚C,f=1kHz2020kΩLogical“1”Output Voltage V CC=4.75V, 2.4 3.3 2.4 3.3V

I SOURCE=−0.5mA

Logical“0”Output Voltage V CC=4.75V,0.40.4V

I SINK=6.4mA

Strobe Input“1”Current V CC=5.25V,200200µA (Output Enabled)V STROBE=2.4V

Strobe Input“0”Current V CC=5.25V,−1.6−1.6mA (Output Disabled)V STROBE=0.4V

Strobe Input“0”Voltage V CC=4.75V0.80.8V Strobe Input“1”Voltage V CC=4.75V22V Output Short Circuit Current V CC=5.25V,V OUT=0V−18−55−18−55mA

V+=10V,V−=−10V,

V CC=5.25V,

−55˚C≤T A≤125˚C

Supply Current I+ 4.5mA

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−10mA

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