74157

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...