Overview
HD74HC423A is listed in the Logic IC category. Available datasheets include documents from Hitachi Semiconductor, Renesas Technology Corp. DigiCamel provides a local PDF for online reference.
Summary
Dual Retriggerable Monostable Multivibrators
Description
This multivibrator features output-pulse-duration control by two methods. The basic pulse duration is programmed by selection of external resistance and capacitance values. Once triggered, the basic pulse duration may be extended by retriggering the gated low-level-active (A) or high-level-active (B) inputs, or be reduced by use of the overriding clear. The B input is a Schmitt trigger enabling jitter-free triggering from input signals with slow transition rates.
Source title
HD74HC423A Datasheet(PDF) - Hitachi Semiconductor