HCC4518B Datasheet, PDF (4/14 Pages) STMicroelectronics – DUAL UP-COUNTERS

HCC/HCF4518B/4520B
TRUTH TABLE
Clock
– ^/–
0
–\–
X
– ^/–
1
X
Enable
1
–\–
X
– ^/–
0
–\–
X
Reset
0
0
0
0
0
0
1
Action
Increment Counter
Increment Counter
No Change
No Change
No Change
No Change
Q1 Thru Q4 = 0
X = Don’t Care Logic 1 = High State Logic 0 = Low
TIMING DIAGRAM
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