54ACT825FM-MLS

Overview

The 54ACT825FM-MLS is a radiation-hardened, high-speed CMOS logic component manufactured by National Semiconductor. It belongs to the 54ACT series, designed for aerospace and harsh environment applications requiring immunity to total ionizing dose (TID), single event latch-up (SEL), and single event upset (SEU). The device features hermetic ceramic packaging and operates within a voltage range of 4.5 V to 5.5 V. It is qualified under QML-V standards and supports an extended temperature range from -55 °C to +125 °C, ensuring reliable performance in demanding space conditions.

Feature Summary

• High radiation hardness with TID tolerance up to 300 krad(Si) and SEL immunity up to 110 MeV.cm²/mg
• Hermetic ceramic packaging suitable for extreme environmental conditions
• QML-V qualification ensuring compliance with stringent aerospace reliability standards

Applications

• Aerospace systems requiring radiation-tolerant logic circuits
• Spacecraft instrumentation and control units
• Harsh environment industrial electronics

Procurement Notes

Verify that the supplier provides documentation confirming QML-V qualification and radiation test results. Ensure the part number suffix matches the specific military or aerospace grade requirements. Confirm hermetic seal integrity and lead finish specifications prior to procurement to meet mission-critical standards.

Selection Notes

Select this component when radiation hardness and long-term reliability in space environments are critical. Compare against other 54ACT series parts for pin compatibility and function. Consider thermal management due to the ceramic package characteristics. Verify availability of engineering model data if required for initial design validation.

Part Context

This part is part of the broader 54AC/54ACT family of radiation-hardened CMOS logic devices. It shares functional similarities with other buffered drivers in the series but is distinguished by its specific radiation hardening processes and hermetic packaging. It serves as a robust solution for digital signal transmission in high-radiation fields where standard commercial components would fail.

Replacement Considerations

Direct substitutes include other QML-V qualified 54ACT series buffers from National Semiconductor or Microsemi. Cross-reference pinouts and electrical characteristics carefully. Non-QML equivalents may lack the necessary radiation hardness for space applications.