Datasheet

2
Functional Diagram
GND = 7
V
CC
= 14
1Q
2
5
6
1Q
3
1Q
1
4
1Q
0
3
2Q
2
9
8
2Q
3
2Q
1
10
2Q
0
11
BINARY
BINARY
13
1
1
CP
2
CP
COUNTER
COUNTER
1MR
2
12
2MR
TRUTH TABLE
CP COUNT
OUTPUTS
Q
0
Q
1
Q
2
Q
3
0LLLL
1HLLL
2LHLL
3HHLL
4LLHL
5HLHL
6LHHL
7HHHL
8LLLH
9HLLH
10LHLH
11 H H L H
12 L L H H
13 H L H H
14LHHH
15HHHH
CP COUNT MR OUTPUT
↑ L No Change
↓ L Count
X H L L L L
H = High Voltage Level, L = Low Voltage Level, X = Don’t Care,
↑ = Transition from Low to High Level, ↓ = Transition from High to Low.
CD54HC393, CD74HC393, CD54HCT393, CD74HCT393