74HCT123PW,112

Multivibrators Overview

The Nexperia 74HCT123PW,118 is a dual retriggerable monostable multivibrator with reset housed in a 16-lead TSSOP package. It operates within a supply voltage range of 4.5 V to 5.5 V and supports an ambient temperature range from -40 °C to +125 °C. The device features TTL-compatible input levels and includes Schmitt-trigger action on the nA and nB inputs for noise immunity. Output pulse width is programmed via external components REXT and CEXT, allowing for retriggering up to a 100% duty factor.

Multivibrators Feature Summary

• Dual retriggerable monostable multivibrator architecture
• TTL-level compatible inputs with Schmitt-trigger action
• Direct reset capability to terminate output pulses
• High noise immunity and latch-up protection

Multivibrators Applications

• Timing generation and pulse stretching
• Debouncing switches or contacts
• Frequency division circuits
• Pulse width modulation applications

Multivibrators Procurement Notes

Verify the specific ordering suffix against official Nexperia documentation to confirm the exact package variant and tape-and-reel specifications. Ensure that the selected component meets the required environmental operating conditions and electrical characteristics for the intended application design.

Multivibrators Selection Notes

Select this component when TTL logic compatibility is required alongside CMOS power efficiency. The TSSOP16 package offers a compact footprint suitable for space-constrained designs. Verify that the external timing components align with the specified resistance and capacitance ranges for accurate pulse width generation.

Multivibrators Part Context

This part belongs to the 74HCT series, which bridges TTL and CMOS logic families. It provides enhanced noise immunity compared to standard HC variants while maintaining low power consumption. The device is designed for general-purpose digital applications requiring reliable monostable operation across wide industrial temperature ranges.

Multivibrators Replacement Considerations

Nexperia 74HCT123D,653 (SO16 package)

Multivibrators FAQ

How is the output pulse width determined?

The basic output pulse width is programmed by selecting external resistor (REXT) and capacitor (CEXT) values connected to the respective pins.

Can the output pulse be extended after triggering?

Yes, the device is retriggerable. Applying a new trigger signal before the current pulse ends extends the output pulse period.