Quad 2-Line to 1-Line Data Selectors/Multiplexers
54157 DM54157 DM74157 Quad 2-Line to 1-Line Data Selectors Multiplexers
June 1989
54157 DM54157 DM74157 Quad 2-Line to...
Description
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 output 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 available 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 – 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’t Care
C1995 National Semiconductor Corporation
TL F 6550
RRD-B30M105 Printed in U S A
Absolute Maximum Ratings (Note)
If Military Aerospace specified devices are required please contact the National Semiconductor Sales Office Distributors for availability and specifications Supply Voltage 7V Input Voltage 5 5V Operating Free Air Temperature Range b 55 C to...
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