54AC74/BCA

Overview

The 54AC74/BCA is a dual D-type flip-flop manufactured by Rochester Electronics, LLC. It belongs to the 54AC series of high-speed CMOS logic functions designed for aerospace applications requiring radiation hardness. The component features hermetic packaging to withstand difficult environmental conditions. Key specifications include immunity from single event latch-up (SEL) and single event upset (SEU). It supports an operating voltage range of 2 V to 6 V for the CMOS series and operates within a temperature range of -55 °C to +125 °C. The device guarantees full compliance with SMD specifications.

Feature Summary

• Radiation hardened design suitable for aerospace environments
• Immunity to single event latch-up and single event upset
• Hermetic package construction for durability
• Compliance with standard microcircuit drawing specifications

Applications

• Aerospace electronic systems
• Spacecraft data processing units
• High-reliability digital logic circuits
• Military grade computing hardware

Procurement Notes

Verify that the specific part number includes the BCA suffix, which denotes the hermetic ceramic package variant required for radiation-hardened applications. Confirm that the supplier provides documentation proving compliance with SMD specifications and QML-V qualification standards. Ensure the lot traceability meets military or aerospace requirements. Check for hermetic seal integrity certifications if available. Request test reports confirming SEL and SEU immunity levels as specified for the 54AC series.

Selection Notes

Select this component when radiation tolerance is critical for system reliability in space or high-altitude environments. The hermetic package distinguishes it from plastic-packaged commercial variants. Consider the wide operating voltage range and temperature stability for harsh conditions. Verify that the dual D-flip-flop architecture matches the circuit design requirements. Ensure compatibility with existing aerospace manufacturing processes and quality control standards.

Part Context

This part is part of the 54AC series produced by Rochester Electronics, LLC, focusing on high-speed CMOS functions. The manufacturer sources and qualifies components for defense and aerospace sectors. The 54AC74 specifically provides dual D-type flip-flops with preset and clear capabilities. The BCA suffix indicates a specific hermetic package option distinct from standard plastic packages used in commercial electronics.

Replacement Considerations

Direct replacements must also be radiation-hardened 54AC series dual D-type flip-flops with hermetic packaging. Verify that any substitute maintains SEL and SEU immunity levels comparable to the original specification. Ensure the replacement supports the same operating voltage and temperature ranges. Check for equivalent SMD specification compliance. Non-hermetic commercial equivalents are not suitable substitutes for this application.