CD54HC393_08 Datasheet, PDF (2/15 Pages) Texas Instruments – High-Speed CMOS Logic Dual 4-Stage Binary Counter

CD54HC393, CD74HC393, CD54HCT393, CD74HCT393
Functional Diagram
1
1CP
2
1MR
13
2CP
12
2MR
BINARY
COUNTER
BINARY
COUNTER
3
1Q₀
4
1Q₁
5
1Q₂
6
1Q₃
11
2Q₀
10
2Q₁
9
2Q₂
8
2Q₃
GND = 7
V_CC = 14
TRUTH TABLE
OUTPUTS
CP COUNT
Q₀
Q₁
Q₂
Q₃
0
L
L
L
L
1
H
L
L
L
2
L
H
L
L
3
H
H
L
L
4
L
L
H
L
5
H
L
H
L
6
L
H
H
L
7
H
H
H
L
8
L
L
L
H
9
H
L
L
H
10
L
H
L
H
11
H
H
L
H
12
L
L
H
H
13
H
L
H
H
14
L
H
H
H
15
H
H
H
H
CP COUNT
MR
OUTPUT
↑
L
No Change
↓
L
Count
X
H
LLLL
H = High Voltage Level, L = Low Voltage Level, X = Don’t Care,
↑ = Transition from Low to High Level, ↓ = Transition from High to Low.
2