74AHC123APW,112

Overview

The Nexperia 74AHC123APW,112 is a dual retriggerable monostable multivibrator with reset housed in a TSSOP16 package. It operates within a supply voltage range of 2.0 V to 5.5 V and supports ambient temperatures from -40 °C to +125 °C. The device features Schmitt-trigger inputs for high noise immunity and overvoltage tolerance up to 5.5 V. Pulse width is programmed via external REXT and CEXT components. Propagation delay ranges from 1.0 ns to 26.0 ns depending on load capacitance and voltage.

Feature Summary

• Dual retriggerable monostable multivibrator architecture
• Overvoltage tolerant inputs compatible with mixed voltage environments
• Schmitt-trigger action at all inputs for improved noise immunity
• Direct reset input capability to terminate output pulses

Applications

• Pulse generation circuits
• Timing delays
• Frequency division
• Waveform shaping

Procurement Notes

Verify the specific ordering suffix '112' against current Nexperia documentation to confirm availability status. Some distributors list this variant as obsolete or limited stock. Confirm the package type matches the required PCB footprint. Ensure the operating temperature range meets system requirements before finalizing procurement.

Selection Notes

Select this component when a dual-channel monostable solution is required with CMOS logic levels. The AHC series offers faster switching speeds compared to standard HC devices. Verify that the external timing components can support the desired pulse width calculations. Consider the TSSOP16 package constraints for thermal management and board space.

Part Context

This part belongs to the 74AHC123A family of dual retriggerable monostable multivibrators. It shares functional characteristics with other variants like the SO16 packaged 74AHC123AD. The APW suffix specifically denotes the plastic thin shrink small outline package (TSSOP16) configuration used in surface-mount applications.

Replacement Considerations

Public confirmed substitute: 74AHCT123APW,118.