54ACTQ541E-QMLV

Overview

The 54ACTQ541E-QMLV is a radiation-hardened octal bus buffer featuring three-state active outputs, manufactured by National Semiconductor. It belongs to the high-speed CMOS 54ACT series designed for aerospace and harsh environment applications. The device operates on a single 5-volt supply within a voltage range of 4.5 V to 5.5 V. It is housed in a hermetic ceramic package and is qualified under the QML-V standard. The component supports an operating temperature range from -55 °C to +125 °C and provides high resistance to total ionizing dose, single event latch-up, and single event upset.

Feature Summary

• High radiation hardness characterized for total ionizing dose, single event latch-up immunity, and single event upset resilience.
• Hermetically sealed ceramic packaging suitable for demanding space and harsh environmental conditions.
• QML-V qualification ensuring compliance with rigorous military and aerospace quality standards.

Applications

• Aerospace systems requiring radiation-tolerant logic components
• Harsh environment electronic circuits
• Spacecraft data bus buffering

Procurement Notes

Verify that the specific part number includes the QML-V suffix to confirm radiation hardening and hermetic packaging. Ensure the procurement source provides valid certification documents matching the manufacturer's specifications. Confirm the lead time and availability directly with authorized distributors or the manufacturer, as these are not included in this technical summary.

Selection Notes

Select this component when radiation tolerance and hermetic sealing are required for octal bus buffering applications. It serves as a suitable replacement for commercial parts in environments where single event effects or total ionizing dose could cause failure. Verify that the 54ACT logic family compatibility meets the system voltage and speed requirements.

Part Context

This component is part of the 54AC/54ACT series of radiation-hardened functions produced by National Semiconductor, now part of Texas Instruments. These devices are engineered specifically for the aerospace industry to meet stringent reliability and radiation hardness requirements. The series includes various gates, flip-flops, and bus interfaces housed in durable ceramic packages.

Replacement Considerations

Consult official manufacturer documentation for confirmed substitute part numbers. Generic cross-references may not guarantee radiation hardness or hermetic sealing qualifications.