JM54AC273S2A-RH

Overview

The JM54AC273S2A-RH is a rad-hard octal D-type flip-flop manufactured by National Semiconductor. It belongs to the 54AC series, designed for high-speed CMOS applications in harsh environments. The device features eight independent D-type flip-flops with a common clear input. It operates within a supply voltage range of 2 V to 6 V and supports a wide temperature range from -55 °C to +125 °C. Key radiation hardness specifications include a total ionizing dose (TID) tolerance of 300 krad(Si) and immunity to single event latch-up up to 110 MeV.cm²/mg. The component is housed in a hermetic ceramic package suitable for aerospace and demanding space conditions.

Feature Summary

• High radiation hardness with TID tolerance of 300 krad(Si) and SEL immunity
• Hermetic ceramic packaging for reliable operation in harsh environments
• Wide operating temperature range from -55 °C to +125 °C
• Octal D-type configuration with common clear input

Applications

• Aerospace and satellite systems requiring radiation tolerance
• Harsh environmental industrial control applications
• Spacecraft data acquisition and storage circuits
• Military avionics and defense electronics

Procurement Notes

Verify that the specific suffix 'S2A' corresponds to the correct hermetic ceramic package variant and radiation qualification level. Confirm that the 'RH' designation indicates the required radiation-hardened status. Ensure compatibility with your system's voltage levels and temperature requirements before procurement. Cross-reference the manufacturer documentation for any updates on QML-V qualification status or engineering model quality levels.

Selection Notes

Select this component when radiation hardness is critical for system reliability. The 54AC series offers high-speed performance suitable for complex digital logic. Consider the hermetic package for long-term stability in extreme temperatures. Evaluate the need for octal configuration versus simpler logic gates to optimize board space and power consumption.

Part Context

This part is part of the 54AC series, which includes various high-speed CMOS functions like gates, flip-flops, and counters. The 54AC273 specifically provides octal D-type flip-flop functionality. It is designed to meet stringent aerospace industry radiation requirements, ensuring data integrity in high-radiation environments where standard commercial components would fail.

Replacement Considerations

Consider the MC74AC273DWR2G for non-radiation-hardened applications. For rad-hard replacements, verify availability of equivalent 54AC273 variants from other manufacturers such as STMicroelectronics or Texas Instruments, ensuring they meet the same TID and SEL specifications.