LM106/LM306

Voltage Comparator

General Description

The LM106 series are high-speed voltage comparators de-

signed to accurately detect low-level analog signals and

drive a digital load. They are equivalent to an LM710, com-

bined with a two input NAND gate and an output buffer. The

circuits can drive RTL, DTL or TTL integrated circuits directly.

Furthermore, their outputs can switch voltages up to 24V at

currents as high as 10 mA.

The devices have short-circuit protection which limits the in-

rush current when it is used to drive incandescent lamps, in

addition to preventing damage from accidental shorts to the

positive supply. The speed is equivalent to that of an LM710.

However, they are even faster where buffers and additional

logic circuitry can be eliminated by the increased flexibility of

the LM106 series. They can also be operated from any

negative supply voltage between −3V and −12V with little ef-

fect on performance.

The LM106 is specified for operation over the −55˚C to

+125˚C military temperature range. The LM306 is specified

for operation over 0˚C to +70˚C temperature range.

Features

n

Improved accuracy

n

Fan-out of 10 with DTL or TTL

n

Added logic or strobe capability

n

Useful as a relay or lamp driver

n

Plug-in replacement for the LM710

n

40 ns maximum response time

December 1994

© 1997 National Semiconductor Corporation

DS007756

www.national.com

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PrintDate=1997/05/07 PrintTime=10:34:16 6917 ds007756 Rev. No. 1

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