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| HD74HC390 Datasheet, PDF (2/9 Pages) Hitachi Semiconductor – Dual Decade Counters | |||
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HD74HC390
Pin Arrangement
1A 1
1Clear 2
1QA
Output 3
1B 4
1QB 5
1QC 6
1QD 7
GND 8
16 VCC
CLR
1QA
1A
1B
1QB
15 2A
CLR
2QA
2A
2B
14 2Clear
13 2QA
Output
12 2B
1QC
2QB
11 2QB
1QD
2QC
10 2QC
2QD
9 2QD
(Top view)
2
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