HD74HC190 Hitachi Semiconductor, HD74HC190 Datasheet - Page 4

• Manufacturer Part Number: HD74HC190
• Description: Synchronous Up/Down Decade/4-bit Binary Counter(Single Clock Line)
• Manufacturer: Hitachi Semiconductor

HD74HC190/HD74HC191
HD74HC191
Illustrated below is the following sequence:
1. Load (preset) to binary thirteen.
2. Count up to fourteen, fifteen (maximum), zero, one and two.
3. Inhibit
4. Count down to one, zero (minimum), fifteen, fourteen and thirteen.
4
Inputs
Enable G
Data
Down/Up
Max/Min
Ripple
Clock
Clock
Load
Q
Q
Q
Q
C
D
A
B
C
D
A
B
Load
13
14
Count Up
15
0
1
2
Inhibit
2
1
Count Down
0
15 14 13