JM54AC273SSA-RH

Overview

The JM54AC273SSA-RH is a radiation-hardened octal D-type flip-flop with clear, part of the 54AC series designed for aerospace environments. It features hermetic ceramic packaging to withstand extreme conditions. The device operates within a voltage range of 2V to 6V and supports a temperature range from -55°C to +125°C. It provides immunity to single event latch-up up to 110 MeV.cm²/mg and total ionizing dose tolerance of 300 krad (Si).

Feature Summary

• Hermetic ceramic package construction for environmental durability.
• Radiation hardness qualified for high-radiation aerospace applications.
• Immunity to single event latch-up and upset events.

Applications

• Satellite onboard data handling systems
• Spacecraft command and control logic
• Avionics flight computer memory registers

Procurement Notes

Verify that the specific suffix 'RH' confirms Radiation Hardness qualification status. Ensure the order specifies the hermetic ceramic package variant rather than standard plastic equivalents. Confirm compliance with SMD specifications if required by the system drawing. Validate that the manufacturer documentation explicitly lists this part number under the 54AC rad-hard portfolio.

Selection Notes

Select this component when total ionizing dose and single event effects are critical design constraints. The hermetic seal is necessary for vacuum or harsh atmospheric exposure. Compare against standard commercial 54AC273 parts only if radiation tolerance is not required, noting the significant performance and cost differences between commercial and space-grade variants.

Part Context

This part belongs to the 54AC family of high-speed CMOS functions manufactured by National Semiconductor, now Texas Instruments. The 54AC series is distinguished by its speed and low power consumption compared to older HC/UH families. The 'JM' prefix typically denotes military or space-grade screening standards applied to the base silicon die.

Replacement Considerations

Direct replacements must be rad-hard and hermetic. Verify pinout compatibility with standard 54AC273 footprints. Consider equivalent parts from other vendors offering QML-V qualification if available.