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54157FMQB Datasheet

  • 54157FMQB

  • Quad 2-Line to 1-Line Data Selectors/Multiplexers

  • 6頁

  • NSC

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54157 DM54157 DM74157 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
Features
Y
Y
Y
Y
Applications
Y
Y
Y
Buffered inputs and outputs
Typical propagation time 9 ns
Typical power dissipation 150 mW
Alternate Military Aerospace device (54157) is avail-
able Contact a National Semiconductor Sales Office
Distributor for specifications
Y
Expand any data input point
Multiplex dual data buses
Generate four functions of two variables (one variable
is common)
Source programmable counters
Connection Diagram
Dual-In-Line Package
TL F 6550 鈥?1
Order Number 54157DMQB 54157FMQB DM54157J DM54157W or DM74157N
See NS Package Number J16A N16E or W16A
Function Table
Inputs
Strobe
H
L
L
L
L
Select
X
L
L
H
H
A
X
L
H
X
X
B
X
X
X
L
H
L
L
H
L
H
Output Y
H
e
High Level L
e
Low Level X
e
Don鈥檛 Care
C
1995 National Semiconductor Corporation
TL F 6550
RRD-B30M105 Printed in U S A

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