A54SX72A-CQ256B

Overview

The A54SX72A-CQ256B is a high-reliability Field Programmable Gate Array from the HiRel SX-A family, manufactured by Microchip Technology. It features 108,000 system gates and 6,036 logic modules within a 256-pin Ceramic Quad Flat Pack (CQFP) package. The device supports mixed-voltage operation at 2.5 V, 3.3 V, and 5 V with 5 V input tolerance. It achieves a maximum internal clock frequency of 240 MHz and a pin-to-pin clock-to-out delay of 5.3 ns in military temperature ranges. The component operates across an ambient temperature range of –55°C to +125°C and complies with MIL-STD-883 Class B requirements.

Feature Summary

• Military-grade reliability certified under MIL-STD-883 Class B standards
• Nonvolatile antifuse architecture providing deterministic timing and design security
• Hot-swap compliant I/Os supporting cold-sparing applications
• Configurable I/O standards including 3.3 V/5 V PCI, LVTTL, and TTL

Applications

• High-reliability military systems requiring radiation tolerance alternatives
• Spacecraft avionics and satellite communication subsystems
• Defense electronics utilizing hot-swap or cold-sparing architectures
• Industrial control systems demanding extended temperature stability

Procurement Notes

Verify that the ordering suffix 'B' corresponds specifically to MIL-STD-883 Class B qualification as defined in the official datasheet. Confirm the package type is CQFP for the 256-pin variant. Ensure compatibility with Actel Designer or Libero IDE tools for programming. Check for current production status and availability through authorized Microchip distributors.

Selection Notes

Select this model when 108,000 system gates are required for complex logic integration. Choose the CQFP package for hermetic sealing needs in harsh environments. Opt for this device over SRAM-based FPGAs where nonvolatility and immunity to single-event upsets are critical. Consider the 5.3 ns performance grade for high-speed synchronous designs operating in military temperature ranges.

Part Context

This component belongs to the HiRel SX-A family, which utilizes metal-to-metal antifuse technology. Unlike volatile SRAM FPGAs, it retains configuration without power. The family includes variants like A54SX32A and A54SX72A, differentiated by gate counts and I/O capacities. The CQFP package provides a ceramic hermetic seal suitable for aerospace and defense applications.

Replacement Considerations

Direct replacements must match the 256-pin CQFP footprint and MIL-STD-883 Class B certification. Verify pinout compatibility with existing board layouts. Consider functional equivalents within the SX-A family if gate density requirements differ. Ensure software toolchain support remains consistent for design migration.