Datasheet

 
   
      
SCHS275E − MARCH 2002 − REVISED OCTOBER 2003
9
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
typical load, count, and inhibit sequence for ’HC191 and ’HCT191
The following sequence is illustrated below:
1. Load (preset) to binary 13
2. Count up to 14, 15 (maximum), 0, 1, and 2
3. Inhibit
4. Count down to 1, 0 (minimum), 15, 14, and 13
Data
Inputs
Data
Outputs
LOAD
A
B
C
D
CLK
D/U
CTEN
MAX/MIN
Q
A
Q
B
Q
C
Q
D
Load
Count Up Inhibit
13
14 15 0 1 2
RCO
Count Down
2210151413
L
H
H
L
H
L