Datasheet
December 1990 3
Philips Semiconductors Product speciļ¬cation
Quad 2-input multiplexer 74HC/HCT157
PIN DESCRIPTION
PIN NO. SYMBOL NAME AND FUNCTION
1 S common data select input
2, 5, 11, 14 1I
0
to 4I
0
data inputs from source 0
3, 6, 10, 13 1I
1
to 4I
1
data inputs from source 1
4, 7, 9, 12 1Y to 4Y multiplexer outputs
8 GND ground (0 V)
15
E enable input (active LOW)
16 V
CC
positive supply voltage
Fig.1 Pin configuration. Fig.2 Logic symbol. Fig.3 IEC logic symbol.