74AHCT123AD-Q100J

Overview

The Nexperia 74AHCT123AD-Q100J is a dual retriggerable monostable multivibrator with reset, qualified to AEC-Q100 Grade 1. It operates within a supply voltage range of 4.5 V to 5.5 V and supports ambient temperatures from -40 °C to +125 °C. The device features TTL input levels, Schmitt-trigger action, and overvoltage tolerant inputs up to 5.5 V. Propagation delay is typically 6.7 ns at 5.5 V with a 50 pF load. It is housed in an SO16 (SOT109-1) package.

Feature Summary

• Dual retriggerable monostable multivibrator architecture with direct reset functionality
• Automotive qualification compliant with AEC-Q100 Grade 1 standards
• TTL-compatible input levels with Schmitt-trigger action for high noise immunity
• Overvoltage tolerant inputs enabling use as translators in mixed-voltage environments

Applications

• Automotive electronic systems requiring Grade 1 component qualification
• Timing pulse generation and shaping circuits
• Debouncing switches or generating single pulses from multiple transitions
• Frequency division and pulse width modulation applications

Procurement Notes

Verify the specific suffix 'J' against the manufacturer's current ordering information to confirm packaging details such as tape and reel specifications. Ensure the selected variant matches the required temperature range and package type for your design constraints. Cross-reference the full part number with official Nexperia documentation to validate availability status and any recent product change notices.

Selection Notes

Select this component when automotive reliability under AEC-Q100 Grade 1 is mandatory. Choose this model specifically for its TTL input compatibility compared to standard HCT variants. Consider the wide operating temperature range and overvoltage tolerance for robust interface designs. Verify that the external timing components align with the specified resistance and capacitance ranges for accurate pulse width control.

Part Context

This device belongs to the Nexperia 74AHC(AHCT)123A-Q100 family of dual retriggerable monostable multivibrators. It shares functional similarities with other members of the series but is distinguished by its AHCT logic level compatibility and specific package configuration. The family provides versatile timing solutions for digital logic applications requiring precise pulse generation and reset capabilities.

Replacement Considerations

Direct pin-to-pin replacements within the same family include the 74AHC123AD-Q100J. Designers must verify input voltage compatibility when substituting between HC and AHCT logic families. Ensure that any alternative component meets the same AEC-Q100 Grade 1 qualification requirements for automotive deployment.