74HC423 Datasheet (nexperia) - Dual retriggerable monostable multivibrator

74HC423, Dual retriggerable monostable multivibrator

The 74HC423 is a dual retriggerable monostable multivibrator with output pulse width control by two methods.

The basic pulse time is programmed by selection of an external resistor (REXT) and capacitor (CEXT).

Once triggered, the basic output pulse width may be extended by retriggering (nA) or (nB).

74HC423 Features

* DC triggered from active HIGH or active LOW inputs

* Retriggerable for very long pulses up to 100 % duty factor

* Direct reset terminates output pulse

* Schmitt-trigger action on all inputs except for the reset input

* Complies with JEDEC standard no. 7A

* Input levels: