74AHCT123ABQ-Q100X

Overview

The Nexperia 74AHCT123ABQ-Q100X is a dual retriggerable monostable multivibrator with reset, qualified to AEC-Q100 Grade 1 for automotive use. 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 TTL-compatible inputs, Schmitt-trigger action, and overvoltage tolerance up to 5.5 V. It utilizes external components (REXT and CEXT) to program pulse width and includes direct reset functionality.

Feature Summary

• Dual retriggerable monostable multivibrator architecture with direct reset capability
• Automotive qualification compliant with AEC-Q100 Grade 1 standards
• TTL-level input compatibility with Schmitt-trigger action for high noise immunity
• Overvoltage tolerant inputs enabling operation in mixed-voltage environments

Applications

• Automotive electronic systems requiring qualified logic components
• Timing generation and pulse shaping circuits
• Debouncing switches or generating single pulses from mechanical triggers
• Frequency division and timing delay applications

Procurement Notes

Verify the specific ordering suffix against the manufacturer's official documentation to confirm package type and reel specifications. Ensure the component meets the required AEC-Q100 Grade 1 qualification level for your target application. Cross-reference the part number with the latest datasheet revision to confirm availability of the DHVQFN16 package variant.

Selection Notes

Select this component when a dual monostable multivibrator with automotive reliability is required. The AHCT series provides TTL input levels, making it suitable for interfacing with legacy digital logic. Verify that the external resistor and capacitor values selected can achieve the desired pulse width within the specified operating temperature range.

Part Context

This device belongs to the Nexperia 74AHC/AHCT123A-Q100 family of dual retriggerable monostable multivibrators. It shares functional characteristics with other members of the series but is distinguished by its specific BQ package designation (DHVQFN16). The product line is designed to meet stringent automotive quality and reliability standards.

Replacement Considerations

Direct substitutes include the 74AHC123ABQ-Q100X for CMOS input levels or the 74AHCT123AD-Q100X for alternative packaging. Verify pinout compatibility and electrical parameters before substitution.