Dual monostable for pulse-width generation in harsh environments
It generates precision output pulses whose width is set by external RC components, making it a standard building block for pulse stretching, timing delays, and frequency division in industrial and military-grade systems. The device integrates two independent monostable circuits with Schmitt trigger inputs on the A and B trigger pins, providing noise immunity on the trigger lines. Key characteristics include a wide supply range of 2 V to 6 V, a propagation delay of 43 ns, and output drive capability of 5.2 mA for both high and low states.
43 ns propagation delay — timing budget for pulse-width accuracy
The 43 ns propagation delay from trigger to output transition sets the floor for the minimum achievable output pulse width. When the external RC time constant is small, the internal gate delay dominates the pulse duration; a designer targeting sub-microsecond pulses needs to account for this 43 ns offset in the timing equation. For longer pulses (milliseconds to seconds), the RC tolerance becomes the primary error source, and the 43 ns delay is negligible. Because the part is retriggerable, a new trigger pulse during an ongoing output pulse extends the pulse from the new trigger edge. The 43 ns propagation delay applies to each retrigger event, so the extended pulse width includes the same internal delay contribution as the initial pulse.
Through-hole 16-DIP package for prototyping and legacy retrofit
This package is well suited for breadboard prototyping, socketed evaluation, and retrofitting into existing through-hole PCB designs where surface-mount rework is impractical. The 16-PDIP supplier device package footprint is standard across the 74HC DIP family, allowing direct substitution with other 16-pin DIP logic devices from the same series.
Active production status and sourcing posture
It is ROHS3 compliant.