Philips Semiconductors
Product specification
Dual 4-input multiplexer; 3-state
74HC/HCT253
PIN DESCRIPTION
PIN NO.
1, 15
14, 2
7, 9
SYMBOL
1OE, 2OE
S0, S1
NAME AND FUNCTION
output enable inputs (active LOW)
common data select inputs
3-state multiplexer outputs
ground (0 V)
1Y, 2Y
8
GND
6, 5, 4, 3
1I0 to 1I3
data inputs from source 1
data inputs from source 2
positive supply voltage
10, 11, 12, 13 2I0 to 2I3
16
VCC
Fig.1 Pin configuration.
Fig.2 Logic symbol.
Fig.3 IEC logic symbol.
December 1990
3