Fairchild Semiconductor DM74150N Datasheet

DM74150 Data Selectors/Multiplexers

September 1986 Revised February 2000

General Description

These data selectors/multiplexers contain full on-chip decoding to select the desired data source . The DM741 50 selects one-of-sixteen data sources. The DM7 4150 has a strobe input which m ust be at a LOW logi c level to e nable these devices. A HIGH level at the strobe forces the W output HIGH and the Y output (as applicable) LOW.

The DM74150 features an inverted (W) output only.

Features

■ 150 selects one-of-sixteen data lines

■ Performs parallel-t o-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: 11 ns

■ Typical power dissipation: 200 mW

Ordering Code:

Order Number Package Number Package Description

DM74150N N24A 24-Lead Plastic Dual-In-Line Package (PDIP), JEDEC MS-010, 0.600 Wide

Connection Diagram Function Table

Inputs Outputs

Select Strobe W

DCBA S

XXXX H H LLLL L E0 LLLH L E1 LLHL L E2 LLHH L E3 LHLL L E4 LHLH L E5 LHHL L E6 LHHH L E7 HLLL L E8 HLLH L E9 HLHL L E10 HLHH L E11 HHL L L E12 HHLH L E13 HHHL L E14 HHHH L E15

H = HIGH Level L = LOW Level X = Don’t Care

, E1 …E15 = the complement of the level of the respective E input

Logic Diagram

DM74150

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