Fairchild Semiconductor DM74S151N, DM74S151CW Datasheet

© 2000 Fairchild Semiconductor Corporation DS006468 www.fairchildsemi.com

August 1986
Revised April 2000

DM74S151 1-of-8 Data Selector/Multiplexer with Complementary Outputs

DM74S151
1-of-8 Data Selector/Multiplexer

with Complementary Outputs

General Description

These data selectors/multiplexers contain full on-chip
decoding to select the desired data source. The
DM74S151 selects one-of-eight data sources. The
DM74S151 has a strobe input whi ch m ust be at a low logic
level to enable these devices. A high level at the strobe
forces the W output HIGH and the Y output LOW.

The DM74S151 features complementary W and Y outputs.

Features

■ Select one-of-eight data lines

■ Performs parallel-to-serial conversion

■ Permits multiplexing from N lines to one line

■ Also for use as Boolean function generator

■ Typical average propagation delay tim e, data in put to W

output 4.5 ns

■ Typical power dissipati on 225 mW

Ordering Code:

Connection Diagram Function Table

H = HIGH Level
L = LOW Level
X = Don’t Care
D0, D1…D7 = The level of the respe ctiv e D input

Order Number Package Number Package Description

DM74S151N N16E 16-Lead Plastic Dual-In-Line Package (PDIP), JEDEC MS-001, 0.300 Wide

Inputs Outputs

Select Strobe

YW

CBAS

XXXHLH
L L L L D0 D0
L L H L D1 D1
L H L L D2 D2
L H H L D3 D3
H L L L D4 D4
H L H L D5 D5
H H L L D6 D6
H H H L D7 D7

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DM74S151

Logic Diagram