December 1990

3

Philips Semiconductors

Product specification

Quad D-type flip-flop; positive-edge trigger; 3-state

74HC/HCT173

PIN DESCRIPTION

PIN NO.

SYMBOL

NAME AND FUNCTION

1, 2

output enable input (active LOW)

3, 4, 5, 6

3-state flip-flop outputs

7

CP

clock input (LOW-to-HIGH, edge-triggered)

8

GND

ground (0 V)

9, 10

data enable inputs (active LOW)

14, 13, 12, 11

data inputs

15

MR

asynchronous master reset (active HIGH)

16

positive supply voltage

Fig.1 Pin configuration.

Fig.2 Logic symbol.

Fig.3 IEC logic symbol.