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PDF DM74157 Data sheet ( Hoja de datos )

Número de pieza DM74157
Descripción Quad 2-Line to 1-Line Data Selectors/Multiplexers
Fabricantes National Semiconductor　
Logotipo National Semiconductor Logotipo



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No Preview Available ! DM74157 Hoja de datos, Descripción, Manual

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 XX
L L LX
L L HX
L H XL
L H XH
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

1 page




DM74157 pdf
Physical Dimensions inches (millimeters)
16-Lead Ceramic Dual-In-Line Package (J)
Order Number 54157W or DM54157J
NS Package Number J16A
16-Lead Molded Dual-In-Line Package (N)
Order Number DM74157N
NS Package Number N16E
5

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