74AHC123A-Q100;
74AHCT123A-Q100
Dual retriggerable monostable multivibrator with reset
Rev. 2 — 17 June 2020
Product...
74AHC123A-Q100;
74AHCT123A-Q100
Dual retriggerable monostable multivibrator with reset
Rev. 2 — 17 June 2020
Product data sheet
1. General description
The 74AHC123A-Q100; 74AHCT123A-Q100 is a dual retriggerable monostable multivibrator with reset. The basic output pulse width is programmed by selection of external components (REXT and CEXT). Once triggered this basic pulse width may be extended by retriggering either of the edge triggered inputs (nA or (nB). By repeating this process, the output pulse period (nQ = HIGH, nQ = LOW) can be made as long as desired. Alternatively, an output delay can be terminated at any time by a LOW-going edge on input nRD. Inputs are over
voltage tolerant. This feature allows the use of these devices as translators in mixed
voltage environments.
This product has been qualified to the Automotive Electronics Council (AEC) standard Q100 (Grade 1) and is suitable for use in automotive applications.
2. Features and benefits
Automotive product qualification in accordance with AEC-Q100 (Grade 1) Specified from -40 °C to +85 °C and from -40 °C to +125 °C
Wide supply
voltage range from 2.0 V to 5.5 V DC triggered from active HIGH or active LOW inputs Retriggerable for very long pulses up to 100 % duty factor Direct reset terminates output pulse Over
voltage tolerant inputs to 5.5 V All inputs have a Schmitt-trigger action High noise immunity Input levels:
For 74AHC123A-Q100:
CMOS level For 74AHCT123A-Q100: TTL level ESD prot...