Datasheet
September 1993 3
Philips Semiconductors Product speciļ¬cation
Dual 2-to-4 line decoder/demultiplexer 74HC/HCT139
PIN DESCRIPTION
PIN NO. SYMBOL NAME AND FUNCTION
1, 15 1
E, 2E enable inputs (active LOW)
2, 3 1A
0
, 1A
1
address inputs
4, 5, 6, 7 1
Y
0
to 1Y
3
outputs (active LOW)
8 GND ground (0 V)
12, 11, 10, 9 2
Y
0
to 2Y
3
outputs (active LOW)
14, 13 2A
0
, 2A
1
address inputs
16 V
CC
positive supply voltage
Fig.1 Pin configuration.
Fig.2 Logic symbol.
Fig.3 IEC logic symbol.
(a) (b)