HD74HC669 Hitachi Semiconductor, HD74HC669 Datasheet - Page 7

• Manufacturer Part Number: HD74HC669
• Description: Synchronous UP/Down Decade/4-bit binary Counter
• Manufacturer: Hitachi Semiconductor

HD74HC669
Data
inputs
Clock
P and T
U/D
Load
Ripple
carry
output
A
B
C
D
Q
Q
Q
Q
C
D
A
B
Load
13
14
15
Count up
0
1
2
Inhibit
2
2
HD74HC668/HD74HC669
1
0
Count down
15
14
13
7