74HC123 - Dual retriggerable monostable multivibrator
The 74HC123; 74HCT123 are high-speed Si-gate CMOS devices and are pin compatible with Low-power Schottky TTL (LSTTL).
They are specified in compliance with JEDEC standard no.
7A.
The 74HC123; 74HCT123 are dual retriggerable monostable multivibrators with output pulse width control by three methods: