74HCT4518 datasheet(4/7 Pages) PHILIPS

部品番号	74HCT4518

部品情報	Dual synchronous BCD counter

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メーカー	PHILIPS [NXP Semiconductors]

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4 / 7 page

December 1990

4

Philips Semiconductors

Product speciﬁcation

Dual synchronous BCD counter

74HC/HCT4518

Fig.4 Functional diagram.

FUNCTION TABLE

Notes

1. H = HIGH voltage level

L = LOW voltage level

X = don’t care

↑ = LOW-to-HIGH clock transition

↓ = HIGH-to-LOW clock transition

nCP0

nCP1

MR

MODE

↑

H

L

counter advances

L

↓

L

counter advances

↓

X

L

no change

X

↑

L

no change

↑

L

no change

H

↓

L

no change

XX

H

Q0 to Q3 = LOW

Fig.5 Logic diagram (one counter).

Fig.6 Timing diagram.

同様の部品番号 - 74HCT4518

メーカー	部品番号	データシート	部品情報
NXP Semiconductors	74HCT4510	102Kb / 12P	BCD up/down counter December 1990
	74HCT4510D	102Kb / 12P	BCD up/down counter December 1990
	74HCT4510DB	102Kb / 12P	BCD up/down counter December 1990
	74HCT4510N	102Kb / 12P	BCD up/down counter December 1990
	74HCT4510PW	102Kb / 12P	BCD up/down counter December 1990

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同様の説明 - 74HCT4518

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