CD54HC109_08 Datasheet, PDF (2/15 Pages) Texas Instruments – Dual J-K Flip-Flop with Set and Reset Positive-Edge Trigger

CD54HC109, CD74HC109, CD54HCT109, CD74HCT109
Functional Diagram
5
1S
2
1J
3
1K
4
1CP
1
1R
F/F 1
6
1Q
7
1Q
11
2S
14
2J
13
2K
12
2CP
15
2R
F/F 2
10
2Q
9
2Q
GND = 8
V_CC = 16
TRUTH TABLE
INPUTS
S
R
CP
J
K
L
H
X
X
X
H
L
X
X
X
L
L
X
X
X
H
H
↑
L
L
H
H
↑
H
L
H
H
↑
L
H
H
H
↑
H
H
H
H
L
X
X
H= High Level (Steady State)
L= Low Level (Steady State)
X= Don’t Care
↑= Low-to-High Transition
NOTE:
1. Unpredictable and unstable condition if both S and R go high simultaneously
OUTPUTS
Q
Q
H
L
L
H
H (Note 1)
H (Note 1)
L
H
Toggle
No Change
H
L
No Change
Logic Diagram
5(11)
S
2(14)
J
3(13)
K
4(12)
CP
1(15)
R
16
V_CC
8
GND
JS
FF
K _{CL CL}
Q
RQ
6(10)
Q
7(9)
Q
2