MM54C157 MM74C157 Quad 2-Input Multiplexers
February 1988
MM54C157 MM74C157 Quad 2-Input Multiplexers
General Descript...
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
Absolute Maximum Ratings (Note 1)
If Military Aerospace specified devices are required please contact the National Semiconductor Sales Office Distributors for availability and specifications
Voltage at Any Pin Operating Temperature Range MM54C157 MM74C157
b 0 3V to VCC a 0 3V b 55 C to a 125 C b 40 C to a 85 C
Storage Temperature Range Maximum VCC Voltag...