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74157 Fiches technique(PDF) 1 Page - National Semiconductor (TI)

[Old version datasheet] Texas Instruments acquired National semiconductor.
No de pièce 74157
Description  Quad 2-Line to 1-Line Data Selectors/Multiplexers
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Fabricant  NSC [National Semiconductor (TI)]
Site Internet  http://www.national.com
Logo NSC - National Semiconductor (TI)

74157 Fiches technique(HTML) 1 Page - National Semiconductor (TI)

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TLF6550
June 1989
54157DM54157DM74157
Quad 2-Line to 1-Line Data SelectorsMultiplexers
General Description
These data selectorsmultiplexers 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 MilitaryAerospace device (54157) is avail-
able Contact a National Semiconductor Sales Office
Distributor for specifications
Connection Diagram
Dual-In-Line Package
TLF6550 – 1
Order Number 54157DMQB 54157FMQB DM54157J DM54157W or DM74157N
See NS Package Number J16A N16E or W16A
Function Table
Inputs
Output Y
Strobe
Select
A
B
HX
X
X
L
LL
L
X
L
LL
H
X
H
LH
X
L
L
LH
X
H
H
H e High Level L e Low Level X e Don’t Care
C1995 National Semiconductor Corporation
RRD-B30M105Printed in U S A


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