74HCT423 Ver la hoja de datos (PDF) - Philips Electronics

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74HCT423

Dual retriggerable monostable multivibrator with reset

Philips Electronics 

Philips Semiconductors

Dual retriggerable monostable

multivibrator with reset

Product specification

74HC/HCT423

Fig.4 Functional diagram.

FUNCTION TABLE

INPUTS

nRD

nA

nB

L

X

X

X

H

X

X

X

L

H

L

↑

H

↓

H

Notes

1. H = HIGH voltage level

L = LOW voltage level

X = don’t care

↑ = LOW-to-HIGH transition

↓ = HIGH-to-LOW transition

= one HIGH level output pulse

OUTPUTS

nQ

nQ

L

H

L(2)

H(2)

L(2)

H(2)

= one LOW level output pulse

2. If the monostable was triggered before this condition was established, the pulse will continue as programmed.

1998 Jul 08

4

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