54ACTQ244JRQMLV

Overview

The 54ACTQ244JRQMLV is a rad-hard octal bus buffer featuring non-inverting, three-state outputs. It belongs to the 54ACTQ series, designed for aerospace and high-reliability applications requiring immunity to single event latch-up and upset. The device operates on a single 5-volt supply and utilizes a hermetic 20-pin CERDIP package. It provides high-speed CMOS performance with low power consumption, ensuring signal integrity in demanding radiation environments.

Feature Summary

• Rad-hard design qualified for QML-V standards
• Immune to single event latch-up and upset
• Hermetic ceramic packaging for harsh environments

Applications

• Aerospace avionics systems
• Military satellite communication buses
• High-reliability industrial control interfaces

Procurement Notes

Verify QML-V qualification status and specific lot traceability documentation upon order confirmation. Ensure the supplier provides full material certification and test reports required for defense or aerospace procurement compliance. Confirm package integrity and pinout compatibility with existing board layouts before finalizing purchase agreements.

Selection Notes

Select this component when radiation hardness is mandatory for mission-critical logic buffering. It serves as a direct replacement for standard 54ACT244 devices in environments where total ionizing dose and single event effects pose risks. Choose based on the requirement for hermetic sealing and verified SEL/SEU immunity rather than cost-sensitive commercial alternatives.

Part Context

This part is part of National Semiconductor's (now TI) specialized rad-hard logic family. It complements other hermetic buffers like the 54AC244 but offers TTL-compatible speed and voltage levels. The QML-V designation indicates strict manufacturing controls aligned with military specifications, distinguishing it from commercial grade equivalents.

Replacement Considerations

JM54AC244B2A-RH is a related hermetic octal buffer. Verify functional equivalence regarding output drive strength and propagation delay before substitution. Ensure the alternative maintains the same radiation hardness qualifications if used in shielded or unshielded space applications.