74AHCT123APW,112

Overview

The Nexperia 74AHCT123APW,112 is a dual retriggerable monostable multivibrator with reset. It operates within a supply voltage range of 4.5 V to 5.5 V and accepts TTL-level inputs. The device features Schmitt-trigger action on all inputs for high noise immunity and overvoltage tolerance up to 5.5 V. It provides complementary active HIGH (nQ) and active LOW (nQQ) outputs. Pulse width is programmed via external components connected to nREXT/CEXT and nCEXT pins. Direct reset terminates the output pulse immediately.

Feature Summary

• Dual retriggerable monostable multivibrator architecture
• TTL-compatible input levels with Schmitt-trigger action
• Overvoltage tolerant inputs for mixed-voltage translation
• Direct reset functionality to terminate output pulses

Applications

• Pulse generation and timing circuits
• Debouncing switches or contacts
• Delay line applications
• Frequency division circuits

Procurement Notes

Verify the specific ordering suffix '112' corresponds to the TSSOP16 package (SOT403-1). Confirm RoHS compliance status and REACH registration details directly from the manufacturer's current documentation before procurement. Ensure the design accounts for the specified ambient temperature operating range.

Selection Notes

Select this component when TTL logic compatibility is required in a CMOS environment. The AHCT series ensures direct interfacing with standard TTL devices without level shifting. Verify that the external resistor and capacitor values selected provide the desired pulse width within the specified operating voltage range.

Part Context

This part belongs to the 74AHC(AHCT)123A family of dual retriggerable monostable multivibrators. It shares functional characteristics with other variants in the series but differs in input logic levels and packaging options. The APW suffix specifically denotes the thin shrink small outline plastic package.

Replacement Considerations

Public confirmed substitutes include 74AHCT123AD,118 and SN74AHCT123ADR.