MM54C157| Datasheet

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MM54C157 MM74C157 Quad 2-Input Multiplexers

February 1988

MM54C157 MM74C157 Quad 2-Input Multiplexers
General Description
These multiplexers are monolithic complementary MOS (CMOS) integrated circuits constructed with N- and P-channel enhancement transistors They consist of four 2-input multiplexers with common select and enable inputs When the enable input is at logical ``0'' the four outputs assume the values as selected from the inputs When the enable input is at logical ``1'' the outputs assume logical ``0'' Select decoding is done internally resulting in a single select input only

Features
Y Y Y Y

Supply voltage range High noise immunity Low power Tenth power TTL compatible

3V to 15V 0 45 VCC (typ ) 50 nW (typ ) Drive 2 LPTTL loads

Logic

Connection Diagrams
Dual-In-Line Package

TL F 5894 2

Top View Order Number MM54C157 or MM74C157
TL F 5894 1

Truth Table
Enable 1 0 0 0 0 Select X 0 0 1 1 A X 0 1 X X B X X X 0 1 Output Y 0 0 1 0 1

Guaranteed Noise Margin as a Function of VCC

74L Compatibility

TL F 5894 4

TL F 5894 3

C1995 National Semiconductor Corporation

TL F 5894

RRD-B30M105 Printed in U S A

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MM54C157 DATASHEET