HCC40192B Datasheet, PDF (5/15 Pages) STMicroelectronics – PRESETTABLE UP/DOWN COUNTERS (DUAL CLOCK WITH RESET) 40192B BCD TYPE 40193B BINARY TYPE

Internal Logic of Flip-flop.
HCC/HCF40192B/193B
TRUTH TABLE
Clock
Up
–/–
–\–
1
1
X
X
1 = High Level
Clock
Down
1
1
–/–
–\–
X
X
0 = Low Level X = Don’t Care.
Preset
Enable
1
1
1
1
0
X
Reset
0
0
0
0
0
1
Action
Count Up
No Count
Count Down
No Count
Preset
Reset
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