CD54HC4538_07 Datasheet, PDF (2/20 Pages) Texas Instruments – High-Speed CMOS Logic Dual Retriggerable Precision Monostable Multivibrator

CD54HC4538, CD74HC4538, CD54HCT4538, CD74HCT4538
Functional Diagram
1Cx 1Rx
1
2
V_CC
1Cx
4
1A
1RxCx
6
1Q
5
1B
MONO 1
7
1Q
3
1R
13
2R
12
2A
11
2B
MONO 2
10
2Q
9
2Q
2Cx
2RxCx
GND = 8
V_CC = 16
15
2Cx
14
2Rx
V_CC
TRUTH TABLE
R2
INPUTS
OUTPUTS
CL R1
R
A
B
Q
Q
CL
Q
L
X
X
L
H
p
D
n
X
H
X
L
H
X
X
L
L
H
CL
CL
Q
H
L
↓
p
CL
n
H
↑
H
p
CL
n
R1
H = High Level, L = Low Level, ↑ = Transition from Low to High,
↓ = Transition from High to Low,
One High Level Pulse,
One Low Level Pulse, X = Irrelevant.
CL
FIGURE 1. FF DETAIL
2