54157 Datasheet, PDF (1/6 Pages) National Semiconductor (TI) – Quad 2-Line to 1-Line Data Selectors/Multiplexers

June 1989
54157 DM54157 DM74157
Quad 2-Line to 1-Line Data Selectors Multiplexers
General Description
These data selectors multiplexers contain inverters and
drivers to supply full on-chip data selection to the four out-
put gates A separate strobe input is provided A 4-bit word
is selected from one of two sources and is routed to the four
outputs
Applications
Y _{Expand any data input point}
Y _{Multiplex dual data buses}
Y _{Generate four functions of two variables (one variable}
is common)
Y _{Source programmable counters}
Features
Y _{Buffered inputs and outputs}
Y _{Typical propagation time 9 ns}
Y _{Typical power dissipation 150 mW}
Y _{Alternate Military Aerospace device (54157) is avail-}
able Contact a National Semiconductor Sales Office
Distributor for specifications
Connection Diagram
Dual-In-Line Package
TL F 6550 – 1
Order Number 54157DMQB 54157FMQB DM54157J DM54157W or DM74157N
See NS Package Number J16A N16E or W16A
Function Table
Inputs
Strobe
Select
A
B
H
X
X
X
L
L
L
X
L
L
H
X
L
H
X
L
L
H
X
H
H e High Level L e Low Level X e Don’t Care
Output Y
L
L
H
L
H
C1995 National Semiconductor Corporation TL F 6550
RRD-B30M105 Printed in U S A