54ACTQ374WRQMLV

Overview

The 54ACTQ374WRQMLV is a radiation-hardened octal D-type flip-flop featuring three-state outputs, manufactured by National Semiconductor (now part of Texas Instruments). Designed for high-reliability aerospace applications, it operates within a supply voltage range of 4.5 V to 5.5 V and withstands total ionizing doses up to 300 krad(Si). The device is immune to single-event latch-up up to 110 MeV.cm²/mg and functions across an extended temperature range of -55 °C to +125 °C. It is housed in a hermetic ceramic package and holds QML-V qualification.

Feature Summary

• High radiation hardness with immunity to single-event effects
• Hermetic ceramic packaging for harsh environment durability
• Three-state outputs for efficient bus driving

Applications

• Aerospace satellite systems
• Spacecraft data acquisition
• Harsh environment computing

Procurement Notes

Verify that the specific suffix 'QMLV' corresponds to the required Quality Level V qualification standard. Confirm the manufacturer source is National Semiconductor or its successor Texas Instruments. Ensure the component meets the specified radiation hardness requirements for your mission profile. Check for hermetic seal integrity if operating in vacuum conditions. Validate that the ordering information matches the exact radiation-qualified version.

Selection Notes

Select this component when mission-critical reliability under high radiation exposure is required. It is suitable for designs needing octal storage with tri-state control in space environments. Consider the hermetic package for thermal and environmental sealing needs. Ensure the system voltage aligns with the 4.5 V to 5.5 V operating range. Verify compatibility with existing logic families and interface requirements.

Part Context

This part belongs to the 54AC/54ACT series of radiation-hardened CMOS logic functions. These components are specifically engineered to meet stringent aerospace industry standards. The series includes various gates, flip-flops, and buffers designed for demanding space conditions. The 54ACTQ374WRQMLV variant provides octal D-flip-flop functionality with enhanced radiation tolerance.

Replacement Considerations

Public confirmed substitute part numbers: 54ACT374FMQB.