Datasheet

 
   
      
SCHS275E − MARCH 2002 − REVISED OCTOBER 2003
10
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
CE
CP TC
CE
CP TC
CE
CP TC
D/U
Direction
Control
Enable
Clock
D/U
D/U
Figure 1. ’HC190 Synchronous n-Stage Counter With Parallel Gated Terminal Count
CE
CP
RC
CE
CP
RC
CE
CP
RC
Direction
Control
Enable
Clock
D/U D/U
D/U
Figure 2. ’HC191, ’HCT191 Synchronous n-Stage Counter With Parallel Gated Terminal Count
NOTE: Illegal states in BCD counters corrected in one count
234
5
6
7
89101112
13
14
15
10
Count Up
NOTE: Illegal states in BCD counters corrected in one or two counts
234
5
6
7
89101112
13
14
15
10
Count Down
Figure 3. ’HC190 State Diagram