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DM74157

Part Number	DM74157
Manufacturer	Fairchild Semiconductor
Description	Quad 2-Line to 1-Line Data Selectors/Multiplexer
Published	Apr 1, 2005
Detailed Description	DM74157 Quad 2-Line to 1-Line Data Selectors/Multiplexer August 1986 Revised February 2000 DM74157 Quad 2-Line to 1-Li...
Datasheet	DM74157 PDF File

Overview

DM74157 Quad 2-Line to 1-Line Data Selectors/Multiplexer August 1986 Revised February 2000 DM74157 Quad 2-Line to 1-Line Data Selectors/Multiplexer 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.
Applications • Expand any data input point • Multiplex dual data buses • Generate four functions of two variables (one variable is common) • Source programmable counters Features s Buffered inputs and outputs s Typical propagation time 9 ns s Typical power dissipation 150 mW Ordering Code: Order Number DM74157N Package Number N16E Package Description 16-Lead Plastic Dual-In-Line Package (PDIP), JEDEC MS-001, 0.
300 Wide Connection Diagram Logic Diagram 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 Output Y L L H L H H = HIGH Level, L = LOW Level, X = Don’t Care © 2000 Fairchild Semiconductor Corporation DS006550 www.
fairchildsemi.
com DM74157 Absolute Maximum Ratings(Note 1) Supply Voltage Input Voltage Operating Free Air Temperature Range Storage Temperature Range 7V 5.
5V 0°C to +70°C −65°C to +150°C Note 1: The “Absolute Maximum Ratings” are those values beyond which the safety of the device cannot be guaranteed.
The device should not be operated at these limits.
The parametric values defined in the Electrical Characteristics tables are not guaranteed at the absolute maximum ratings.
The “Recommended Operating Conditions” table will define the conditions for actual device operation.
Recommended Operating Conditions Symbol VCC VIH VIL IOH IOL TA Parameter Supply Voltage HIGH Level Input Voltage LOW Level Input Voltage HIGH Level Output Current LOW Level Output Current Free Air Operating Temperature 0 Min 4.
75 2 0.
8 −0.
8 16 70 Nom 5 Max 5.
25 Units V V V mA mA °C Electrical Characteristics over recommended ope...

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