September 1993

3

Philips Semiconductors

Product specification

4-to-16 line decoder/demultiplexer

74HC/HCT154

PIN DESCRIPTION

PIN NO.

SYMBOL

NAME AND FUNCTION

1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 13, 14, 15, 16, 17

outputs (active LOW)

18, 19

enable inputs (active LOW)

12

GND

ground (0 V)

23, 22, 21, 20

address inputs

24

positive supply voltage

Fig.1 Pin configuration.

Fig.2 Logic symbol.

Fig.3 IEC logic symbol.

(a)

(b)

Fig.4 Functional diagram.