A54SX16-2TQ176

Overview

The A54SX16-2TQ176 is a Field Programmable Gate Array from the Actel SX-A family, fabricated using 0.22 μm / 0.25 μm CMOS antifuse technology. It provides 24,000 system gates and 1,452 configurable logic blocks (CLBs). The device supports a maximum internal clock frequency of 350 MHz with a typical system performance of 250 MHz. It features up to 2,012 dedicated flip-flops and 180 user-programmable I/O pins. The component operates at 2.5 V, 3.3 V, or 5.0 V supply voltages and is housed in a 176-pin Thin Quad Flat Pack (TQFP) package.

Feature Summary

• Supports mixed-voltage operation across 2.5 V, 3.3 V, and 5.0 V domains with 5 V input tolerance.
• Features hot-swap compliant I/Os allowing insertion into active systems without power sequencing requirements.
• Includes deterministic timing architecture with DirectConnect and FastConnect routing for predictable signal propagation.
• Integrates IEEE 1149.1 Boundary-Scan Testing capabilities for diagnostic verification.

Applications

• High-performance digital logic integration requiring nonvolatile configuration
• Systems demanding hot-swappable interface compatibility
• Designs utilizing mixed voltage standards including 5V TTL and 3.3V PCI

Procurement Notes

Verify the specific speed grade suffix '-2' corresponds to the required approximately 25% faster performance relative to standard speed devices. Confirm that the TQFP-176 package availability aligns with current manufacturing status, as older Actel products may have limited distribution channels. Ensure design tools support the SX-A antifuse programming methodology.

Selection Notes

Select this model when 24,000 system gates and 176 pins are sufficient for the design complexity. The '-2' speed grade offers higher performance than the standard grade but lower than the discontinued '-3' grade. Verify thermal management requirements for the TQFP package under maximum load conditions. Consider the nonvolatile nature of antifuse technology which prevents bitstream interception during power-up.

Part Context

This component belongs to the Actel SX-A family of FPGAs, which utilizes metal-to-metal programmable antifuse interconnect elements. The family includes devices ranging from 12,000 to 108,000 system gates. The A54SX16 variant specifically targets applications needing moderate capacity with high-speed deterministic timing characteristics provided by the patented routing architecture.

Replacement Considerations

Publicly confirmed substitute part numbers are not available in the provided documentation. Designers should consult Microchip Technology for current equivalent offerings within the PolarFire or IGLOO families if SX-A production has ceased.