MM54HC123A
Description
The MM54 74HC123A high speed monostable multivibrators (one shots) utilize advanced silicon-gate CMOS technology They feature speeds parable to low power Schottky TTL circuitry while retaining the low power and high noise immunity characteristic of CMOS circuits Each multivibrator features both a negative A and a positive B transition triggered input either of which can be used as an inhibit input Also included is a clear input that when taken low resets the one shot The ’HC123 can be triggered on the positive transition of the clear while A is held low and B is held high The ’HC123A is retriggerable That is it may be triggered repeatedly while their outputs are generating a pulse and the pulse will be extended Pulse width stability over a wide range of temperature and supply is achieved using linear CMOS techniques The output pulse equation is simply PW e (REXT) (CEXT) where PW is in seconds R is in ohms and C is in farads All inputs are protected from damage due to...
