54HC51J/B

Overview

The MC54HC51J/B is a high-speed CMOS AND-OR-Invert Gate manufactured by Rochester Electronics. It belongs to the 54HC series, designed for military and aerospace applications requiring radiation hardness. The device features a ceramic hermetic package suitable for harsh environments. It operates within a wide temperature range of -55°C to +125°C and supports a supply voltage from 2V to 6V. The component offers high immunity to radiation up to 50 krad(Si) and single event latch-up (SEL) immunity.

Feature Summary

• High-speed CMOS logic function providing AND-OR-Invert capability
• Radiation hardened design with total ionizing dose hardness up to 50 krad(Si)
• Hermetic ceramic packaging for reliability in extreme conditions
• Wide operating temperature range suitable for military and space use

Applications

• Spacecraft avionics systems
• Military communication equipment
• Harsh environment data processing
• Radiation-tolerant logic control circuits

Procurement Notes

Verify the specific suffix J/B against the manufacturer's current datasheet to confirm package type and qualification level. Ensure the order matches the required radiation hardness specifications for your application. Confirm availability through authorized distributors or direct channels as this is a specialized component. Check for any updated ESCC specifications if used in certified programs.

Selection Notes

Select this component when radiation tolerance and hermetic sealing are critical requirements. Compare performance metrics such as propagation delay and power consumption against other 54HC series devices if speed or efficiency is a constraint. Ensure the supply voltage range aligns with the system's power architecture. Consider the thermal management capabilities of the ceramic package for high-power dissipation scenarios.

Part Context

This part is part of the 54HC series, which includes various logic functions like gates, flip-flops, and bus transceivers. These components are widely used in aerospace and defense industries due to their robustness. The 54HC51 specifically implements complex logic functions in a compact form factor, replacing older TTL technologies with lower power consumption while maintaining compatibility.

Replacement Considerations

Direct replacements may include other 54HC51 variants from different manufacturers that meet the same MIL-PRF-38535 specifications. Verify pinout compatibility and electrical characteristics before substitution. Generic commercial grade HC51 parts are not suitable replacements due to lack of radiation hardness and hermetic packaging.