SN74AHCT123ADR

Overview

The SN74AHCT123ADR is a dual retriggerable monostable multivibrator from the AHCT logic family, manufactured by Texas Instruments. It operates within a supply voltage range of 4.5 V to 5.5 V and features edge-triggered inputs compatible with active-high or active-low gated logic. The device utilizes a 16-pin SOIC package and supports surface-mount installation. Key electrical characteristics include a maximum propagation delay of 24 ns and a load capacitance rating of 50 pF. It functions reliably across an operating temperature range of -40°C to +85°C.

Feature Summary

• Dual retriggerable monostable multivibrator architecture
• Edge-triggered input compatibility for active-high or active-low signals
• AHCT logic series ensuring TTL-compatible input levels

Applications

• Pulse generation circuits
• Timing delay applications
• Debouncing switches

Procurement Notes

Verify the specific ordering suffix against official manufacturer documentation to confirm pinout, package dimensions, and electrical specifications. Ensure the component meets required environmental standards and operational temperature ranges for the intended application environment before procurement.

Selection Notes

Select this component when dual independent timing channels are required in a compact surface-mount format. The AHCT series is appropriate for systems requiring direct interface with TTL-level logic without additional level shifting. Consider the 16-SOIC package constraints regarding board space and thermal management during layout.

Part Context

This part belongs to the SN74AHCT123A family of dual retriggerable monostable multivibrators. It shares functional similarities with other devices in the 74-series logic family but offers improved speed and lower power consumption compared to older LS or HC variants. The ADR suffix specifically denotes the tape-and-reel packaging configuration.

Replacement Considerations

Compatible substitutes include SN74AHCT123ADGVR and SN74AHCT123APWRE4. Verify that alternative packages such as TVSOP or TSSOP maintain identical pin configurations and electrical performance parameters.