INTEGRATED CIRCUITS
DATA SHEET
For a complete data sheet, please also download:
• The IC06 74HC/HCT/HCU/HCMOS Logic Family Specifications
• The IC06 74HC/HCT/HCU/HCMOS Logic Package Information
• The IC06 74HC/HCT/HCU/HCMOS Logic Package Outlines
74HC/HCT109
Dual JK flip-flop with set and reset;
positive-edge trigger
Product specification
Supersedes data of December 1990
File under Integrated Circuits, IC06
1997 Nov 25
Philips Semiconductors
Product specification
Dual JK flip-flop with set and reset;
positive-edge trigger
74HC/HCT109
PIN DESCRIPTION
PIN NO.
SYMBOL
1, 15
1RD, 2RD
asynchronous reset-direct input (active LOW)
2, 14, 3, 13
1J, 2J, 1K, 2K
synchronous inputs; flip-flops 1 and 2
4, 12
1CP, 2CP
clock input (LOW-to-HIGH, edge-triggered)
5, 11
1SD, 2SD
asynchronous set-direct input (active LOW)
6, 10
1Q, 2Q
true flip-flop outputs
7, 9
1Q, 2Q
complement flip-flop outputs
8
GND
ground (0 V)
16
VCC
positive supply voltage
Fig.1 Pin configuration.
1997 Nov 25
NAME AND FUNCTION
Fig.2 Logic symbol.
3
Fig.3 IEC logic symbol.