Datasheet

December 1990 3
Philips Semiconductors Product specification
Octal D-type flip-flop; positive edge-trigger;
3-state
74HC/HCT574
PIN DESCRIPTION
PIN NO. SYMBOL NAME AND FUNCTION
1
OE 3-state output enable input (active LOW)
2, 3, 4, 5, 6, 7, 8, 9 D
0
to D
7
data inputs
10 GND ground (0 V)
11 CP clock input (LOW-to-HIGH, edge-triggered)
19, 18, 17, 16, 15, 14, 13, 12 Q
0
to Q
7
3-state flip-flop outputs
20 V
CC
positive supply voltage
Fig.1 Pin configuration. Fig.2 Logic symbol. Fig.3 IEC logic symbol.