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-chan-
nel enhancement transistors They consist of four 2-input
multiplexers with common select and enable inputs When
the enable input is at logical 鈥樷€?鈥欌€?the four outputs assume
the values as selected from the inputs When the enable
input is at logical 鈥樷€?鈥欌€?the outputs assume logical 鈥樷€?鈥欌€?Se-
lect 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 V
CC
(typ )
50 nW (typ )
Drive 2 LPTTL loads
Logic
Connection Diagrams
Dual-In-Line Package
TL F 5894 鈥?2
Top View
Order Number MM54C157 or MM74C157
TL F 5894 鈥?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 V
CC
74L Compatibility
TL F 5894 鈥?4
TL F 5894 鈥?3
C
1995 National Semiconductor Corporation
TL F 5894
RRD-B30M105 Printed in U S A