74HCT4538 Description
The 74HCT4538 is a dual retriggerable-resettable monostable multivibrator. Each multivibrator has two trigger/retrigger inputs (nA and nB), a direct reset input (nCD), two plementary outputs (nQ and nQ), and two pins (nREXT/CEXT and nCEXT) for connecting the external timing ponents CEXT and REXT. Typical pulse width variation over temperature range is ± 0.2.
74HCT4538 Key Features
- Tolerant of slow trigger rise and fall times
- High noise immunity
- Separate reset inputs
- Triggering from falling or rising edge
- plies with JEDEC standard no. 7A
- Wide supply voltage range from 4.5 to 5.5 V
- CMOS low power dissipation
- TTL input levels
- Latch-up performance exceeds 100 mA per JESD 78 Class II Level B
- ESD protection