SN74AHCT123AD

Overview

The SN74AHCT123AD is a dual retriggerable monostable multivibrator from the Texas Instruments 74AHCT logic family. It operates within a supply voltage range of 2 V to 5.5 V, with typical operation at 2.5 V, 3.3 V, and 5 V. The device features propagation delays of 24.1 ns and 14 ns, maximum supply current of 4 uA, and output drive capabilities of 8 mA low and -8 mA high. It is housed in a 16-SOIC package and supports an operating temperature range of -40°C to +85°C.

Feature Summary

• Dual retriggerable monostable multivibrator architecture
• Edge-triggered inputs compatible with active-high or active-low gated logic
• Wide supply voltage operation supporting 2 V to 5.5 V ranges

Applications

• Pulse width generation
• Timing delay circuits
• Frequency division

Procurement Notes

Verify the specific suffix against the manufacturer's official documentation to confirm pinout compatibility and electrical characteristics. Ensure the ordering part number matches the required package type and temperature grade for your application design.

Selection Notes

Select this component when dual independent timing channels are required in a standard SOIC footprint. The AHCT series ensures TTL-compatible input thresholds while maintaining AHC speed and low power consumption characteristics suitable for mixed-voltage systems.

Part Context

This device belongs to the SN74AHCT123A series of dual retriggerable monostable multivibrators. It provides two independent timing circuits in a single package, designed for applications requiring precise pulse generation or timing delays with CMOS technology and TTL-compatible inputs.

Replacement Considerations

SN74AHCT123ADR

FAQ

What is the trigger mechanism for the SN74AHCT123AD?

The device utilizes edge-triggered inputs that can be configured for either active-high or active-low gated logic signals.

Does the SN74AHCT123AD support retriggering?

Yes, it is a dual retriggerable monostable multivibrator, allowing the timing period to be extended by subsequent valid triggers before the initial cycle completes.