A54SX32-CQ208B - 48K Gate Military FPGA 208-CQFP | Microchip
MPN: A54SX32-CQ208B â Active| Qty | Unit Price | Extended |
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| 1 | $0 | $0.00 |
| 10 | $0 | $0.00 |
| 100 | $0 | $0.00 |
| 500 | $0 | $0.00 |
| 1,000 | $0 | $0.00 |
Drop-in alternatives for A54SX32-CQ208B â same package, pin-to-pin compatible. Different-package parts requiring PCB rework are excluded.
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A54SX32-CQ208B Maximum Ratings & Electrical Characteristics
| Family | Actel SX (54SX) |
| System Gates | 48000 gates |
| Number of I/O | 174 |
| Supply Voltage (core/I/O) | 3 V to 3.6 V |
| Supply Voltage (programming) | 4.75 V to 5.25 V |
| Operating Temperature | -55C to +125C (TJ) |
| Grade | Military |
| Package | 208-BFCQFP with Tie Bar (CQFP-208) |
| Mounting Type | Surface Mount |
| Programmability | One-Time Programmable (antifuse) |
| Architecture | Sea-of-modules |
| Technology | 0.25 um CMOS antifuse |
| Packaging | Bulk |
| RoHS Status | Non-compliant |
| Product Status | Active |
| Manufacturer Lead Time | 44 weeks |
A54SX32-CQ208B 208-bfcqfp with tie bar (cqfp-208) Pin Configuration Guide
Complete pinout information for A54SX32-CQ208B (208-bfcqfp with tie bar (cqfp-208) package). This digital IC includes GPIO, communication interfaces (UART, SPI, I2C), and power pins. Refer to the manufacturer datasheet for alternate pin functions and configuration options. Essential for embedded system design and PCB layout.
No detailed pinout data available for A54SX32-CQ208B.
Refer to the datasheet for full pin configuration.
Safe Operating Area (SOA) & Thermal Characteristics
No official SOA curve available for this digital IC. Always operate within absolute maximum ratings specified in the datasheet. Ensure adequate cooling and derate as needed.
Typical Applications
A54SX32-CQ208B is suitable for 6 applications: Military Avionics Glue Logic, Spacecraft and Launch Vehicle Electronics, Missile and Munitions Electronics, Secure / Anti-Tamper Systems, Legacy Defense Design Sustenance, Industrial High-Reliability Control.
Military Avionics Glue Logic
The A54SX32-CQ208B fits military avionics bus-interface and glue-logic integration because it combines 48,000 gates and 174 user I/O in a hermetic 208-pin ceramic CQFP rated -55C to +125C junction, conditions that commercial plastic FPGAs cannot survive. Its antifuse one-time-programmable fabric means the bitstream is permanently set at programming time, eliminating configuration-boot failures during power transients on aircraft power buses. In a typical avionics design, the device integrates address decoding, bus transceiver control, and discrete-to-digital interface functions between a MIL-STD-1553 interface and processor peripherals, replacing dozens of discrete 54-series parts. The 3V to 3.6V supply rail simplifies integration with modern 3.3V logic while the ceramic package provides moisture immunity at altitude. Performance-wise, the sea-of-modules architecture sustains timing-critical decode paths without the reconfiguration latency of SRAM FPGAs.
Recommended
Spacecraft and Launch Vehicle Electronics
For spacecraft digital electronics, the A54SX32-CQ208B's hermetic ceramic CQFP package and antifuse technology directly address launch vibration, vacuum outgassing, and on-orbit thermal cycling. The one-time-programmable configuration cannot be corrupted by single-event configuration upset the way SRAM-based FPGAs can, reducing system-level SEU mitigation burden to functional logic only. The -55C to +125C junction rating covers the thermal swings of eclipse/orbit transitions without active thermal control in many designs. Engineers typically use the 48K gates for telemetry formatting, command decoders, and sensor interface sequencing between radiation-hardened processors and peripheral payloads. The 174 I/O provide ample margin for redundant bus interfaces. Design consideration: the 3V-3.6V core rail pairs naturally with spacecraft 3.3V secondary power, while the programming supply (4.75V-5.25V) is only needed at ground integration, simplifying flight hardware power distribution.
Recommended
Missile and Munitions Electronics
Missile guidance and fuze electronics benefit from the A54SX32-CQ208B's combination of instant-on antifuse configuration and military temperature qualification. Because the configuration is hard-wired at the factory, the logic becomes operational within nanoseconds of power application - critical for fast-turn weapons timelines where SRAM FPGA configuration loading (milliseconds) is unacceptable. The hermetic ceramic package survives storage decades in uncontrolled bunkers and the thermal shock of launch. With 48,000 gates and 174 I/O, typical implementations include safe-and-arm sequencing interfaces, inertial sensor data formatting, and guidance processor glue logic. The -55C to +125C junction rating accommodates internal thermal rise after motor ignition without derating. System designers should note the 44-week lead time (per Microchip USA) when planning production lots, and RoHS non-compliance is acceptable under defense lead exemptions.
Recommended
Secure / Anti-Tamper Systems
One-time-programmable antifuse FPGAs are a standard choice for secure systems because there is no configuration bitstream stored on the board to intercept, clone, or invert. The A54SX32-CQ208B's antifuse array physically programs routing layers, so the design cannot be read back out of a deployed device, unlike SRAM FPGAs whose bitstream resides in external flash. Combined with the hermetic ceramic package that resists decapping-based probing better than molded plastic, this makes the part well suited to key-storage interfaces, cryptographic accelerator glue logic, and anti-tamper perimeter functions in defense equipment. The 48K gate capacity accommodates small cipher blocks or authentication sequencers alongside system interface logic. Design teams should implement redundant routing and consider layout obfuscation at place-and-route time, since antifuse designs are verified once and cannot be patched in the field.
Recommended
Legacy Defense Design Sustenance
Many fielded military platforms designed in the 1990s and 2000s specified Actel SX FPGAs, and lifetime-extension programs must keep sourcing the exact military orderable. The A54SX32-CQ208B remains active (per Microchip USA product status as of 2026), which is why DigiKey, Mouser, and Octopart still list it across 2 distributor channels despite a 44-week factory lead time. For obsolescence management, the same-die A54SX32-CQ208 and pin-compatible A54SX32A-CQ208 in the identical 208-CQFP footprint provide secondary sourcing paths that require no PCB redesign - only design recompilation and re-verification for the SX-A option. Sustenance engineers should qualify both alternates now, maintain verified programming files in the current Microchip toolchain, and store dated certificates of conformance since military ceramic parts are frequent counterfeiting targets on the gray market.
Recommended
Industrial High-Reliability Control
In harsh industrial environments such as downhole drilling, steel mills, and power plant control rooms, ambient temperatures and vibration exceed what commercial plastic-packaged FPGAs tolerate. The A54SX32-CQ208B's -55C to +125C junction rating and hermetic 208-CQFP ceramic package bring military-grade reliability to these civilian applications where field replacement is extremely costly. Its antifuse configuration also provides deterministic startup: control logic is live immediately at power-up, which safety-related interlock systems often require. The 48K gates and 174 I/O are sufficient for motor sequencing, sensor fusion front-ends, and communication bridging between legacy 5V-tolerant field signals and modern 3.3V controller domains, supported by the dual 3.3V/5V supply architecture. Note that RoHS non-compliance restricts use in consumer/EU-market equipment, but industrial exemptions and defense exemptions generally permit deployment.
Recommended
Recommended Products Summary
Engineering reference data for A54SX32-CQ208B â comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | A54SX32-CQ208 | A54SX32A-CQ208 | A54SX32A-1CQ208 |
|---|---|---|---|---|
| Package | 208-BFCQFP with Tie Bar (CQFP-208) | 208-CQFP - same | 208-CQFP - same | 208-CQFP - same |
| Brand | Microchip Technology (Microsemi) | Microchip Technology | Microchip Technology | Microchip Technology |
| System Gates | 48000 | 48000 | 32000 (SX-A gate notation) - [DATA_NEEDED] | 32000 (SX-A gate notation) - [DATA_NEEDED] |
| User I/O | 174 | 174 | [DATA_NEEDED] | [DATA_NEEDED] |
| Supply Voltage | 3V-3.6V (5V programming) | 3V-3.6V (5V programming) | 3.3V (SX-A family) | 3.3V (SX-A family) |
| Temperature Range | -55C to +125C (TJ) | [DATA_NEEDED] | [DATA_NEEDED] | [DATA_NEEDED] |
| Technology | Antifuse OTP, sea-of-modules | Antifuse OTP | Antifuse OTP (0.25um SX-A) | Antifuse OTP (0.25um SX-A) |
| RoHS | Non-compliant | [DATA_NEEDED] | [DATA_NEEDED] | [DATA_NEEDED] |
Key Differentiators
- Military temperature and hermetic packaging (vs A54SX32-PQ208 (plastic commercial package))
- Zero configuration-boot risk (vs A54SX32A-CQ208 (SX-A, same package))
- Trade-off: RoHS non-compliance (vs A54SX32A-CQ208)
Design Notes
The A54SX32-CQ208B requires a dual-rail power architecture: 3V to 3.6V for core and I/O operation, plus 4.75V to 5.25V only during antifuse programming. In deployed hardware, connect only the 3.3V rail and bring the programming supply to a programming connector or test point. Estimated: antifuse static current is far lower than equivalent SRAM FPGAs since there is no configuration bitstream leakage path, so thermal design is usually dominated by I/O switching current - compute I/O dynamic power with the Microchip (Actel) power calculator using your actual toggle rates.
The 208-CQFP with tie bar is a ceramic, surface-mount, fine-pitch package. Use the package mechanical drawing in the Microchip 54SX family datasheet for land pattern definition, and follow lead-scan verification upon receipt - counterfeit ceramic military parts are common. The tie bar must be soldered or mechanically secured per the datasheet recommendation for mechanical integrity under vibration. For rework, CQFP lead forming is delicate; use hot-bar or profiled convection rework rather than hand soldering to avoid lifting fragile leads.
This device is one-time programmable: an incorrect or marginal programming session permanently consumes the part. Always verify programming voltage (4.75V-5.25V) stability and use qualified programmers with current Actel/Microchip software. Second, the part is RoHS non-compliant - confirm your program falls under military/aerospace lead exemptions before design-in. Third, the B suffix denotes military screening; when substituting A54SX32-CQ208 for the -B variant, obtain customer approval since screening levels may differ on the marking.
Compliance Information
RoHS non-compliant per Microchip USA product data (lead-containing ceramic package terminations, permitted under military/aerospace exemptions). Military-grade part; AEC-Q100 not applicable.
