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HD74HC490 Datasheet(PDF) 4 Page - Renesas Technology Corp |
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HD74HC490 Datasheet(HTML) 4 Page - Renesas Technology Corp |
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4 / 8 page ![]() HD74HC490 2 BCD Count Sequence Outputs Count Q D Q C Q B Q A 0L L L L 1L L L H 2L L H L 3L L H H 4L H L L 5L H L H 6L H H L 7L H H H 8H L L L 9H L L H Pin Arrangement CLR CLR QA QA QB QC QD QB QC QD CK CK (Top view) 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 1 Set- to-9 1QB 1QC 1QD GND 1Clock 1Clear 1QA Output VCC 2Clock 2 Set- to-9 2QB 2QC 2QD 2Clear 2QA Output |
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