74ACT157

QUAD 2 CHANNEL MULTIPLEXER

PRELIMINARY DATA

May 1997

s

s

LOW POWER DISSIPATION:

s

COMPATIBLE WITH TTL OUTPUTS

s

50

Ω TRANSMISSION LINE DRIVING

CAPABILITY

s

SYMMETRICAL OUTPUT IMPEDANCE:

s

BALANCED PROPAGATION DELAYS:

s

OPERATING VOLTAGE RANGE:

s

PIN AND FUNCTION COMPATIBLE WITH

74 SERIES 157

s

IMPROVED LATCH-UP IMMUNITY

DESCRIPTION

The ACT157 is an high-speed CMOS QUAD

2-CHANNEL

MULTIPLEXER

fabricated

with

sub-micron silicon gate and double-layer metal

wiring C

power

applications

maintaining

high

speed

operation similar to equivalent Bipolar Schottky

TTL.

It consists of four 2-input digital multiplexers with

common select and strobe inputs. It is a

non-inverting multiplexer. When the STROBE

input is held High selection of data is inhibit and

all the outputs become low. The

SELECT

decoding determines whether the A or B inputs

get routed to their corresponding Y outputs.

The device is designed to interface directly High

Speed CMOS systems with TTL, NMOS and

CMOS output voltage levels.

All

inputs and

outputs

are

equipped with

protection circuits against static discharge, giving

them 2KV ESD immunity and transient excess

voltage.

PIN CONNECTION AND IEC LOGIC SYMBOLS

M

(Micro Package)

B

(Plastic Package)

ORDER CODES :

74ACT157B

74ACT157M

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