74HCHCT4538 datasheet(3/13 Pages) PHILIPS

部品番号	74HCHCT4538

部品情報	Dual retriggerable precision monostable multivibrator

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メーカー	PHILIPS [NXP Semiconductors]

ホームページ	http://www.nxp.com

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3 / 13 page

September 1993

3

Philips Semiconductors

Product speciﬁcation

Dual retriggerable precision monostable

multivibrator

74HC/HCT4538

PIN DESCRIPTION

PIN NO.

SYMBOL

NAME AND FUNCTION

1, 15

1CTC,2CTC

external capacitor connections

2, 14

1RCTC, 2RCTC

external resistor/capacitor connections

3, 13

1RD,2RD

direct reset inputs (active LOW)

4, 12

1A1,2A1

trigger inputs (LOW-to-HIGH, edge-triggered)

5, 11

1A0,2A0

trigger inputs (HIGH-to-LOW, edge-triggered)

6, 10

1Q, 2Q

pulse outputs

7, 9

1Q, 2Q

complementary pulse outputs

8

GND

ground (0 V)

16

VCC

positive supply voltage

Fig.1 Pin configuration.

Fig.2 Logic symbol.

Fig.3 IEC logic symbol.

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