74HC221D datasheet(3/15 Pages) PHILIPS

Part #	74HC221D

Description	Dual non-retriggerable monostable multivibrator with reset

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Manufacturer	PHILIPS [NXP Semiconductors]

Direct Link	http://www.nxp.com

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3 / 15 page

December 1990

3

Philips Semiconductors

Product speciﬁcation

Dual non-retriggerable monostable

multivibrator with reset

74HC/HCT221

ORDERING INFORMATION

See

“74HC/HCT/HCU/HCMOS Logic Package Information”.

PIN DESCRIPTION

PIN NO.

SYMBOL

NAME AND FUNCTION

1, 9

1A, 2A

trigger inputs (negative-edge triggered)

2, 10

1B, 2B

trigger inputs (positive-edge triggered)

3, 11

1RD, 2RD

direct reset inputs (active LOW)

4, 12

1Q, 2Q

outputs (active LOW)

72REXT/CEXT

external resistor/capacitor connection

8

GND

ground (0 V)

13, 5

1Q, 2Q

outputs (active HIGH)

14, 6

1CEXT, 2CEXT

external capacitor connection

15

1REXT/CEXT

external resistor/capacitor connection

16

VCC

positive supply voltage

Fig.1 Pin configuration.

Fig.2 Logic symbol.

Fig.3 IEC logic symbol.

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74HC221D Datasheet(PDF) 3 Page - NXP Semiconductors

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