Datasheet

2
Functional Diagram
Logic Diagram
TRUTH TABLE
INPUTS OUTPUTS
S RCPJ KQQ
LHXXXHL
H
L
XXXLH
L
L
X X X H (Note 1) H (Note 1)
H
H
↑ LLLH
H
H
↑ H L Toggle
HH↑ L H No Change
HH↑ HHHL
H H L X X No Change
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
1S
2S
2R
5
11
6
7
1
Q
1Q
15
1
1R
2K
13
12
10
9
2
Q
2Q
2CP
F/F 1
F/F 2
GND = 8
V
CC
= 16
2J
14
1K
3
4
1CP
1J
2
S
J
K
CL
CL R
Q
Q
6(10)
7(9)
Q
Q
5(11)
S
2(14)
J
3(13)
K
4(12)
CP
1(15)
R
FF
V
CC
GND
16
8
CD54HC109, CD74HC109, CD54HCT109, CD74HCT109