A54SX32-1TQG144I - SX FPGA 32K Gates 280MHz TQFP-144 | Microsemi
MPN: A54SX32-1TQG144I ✓ Active| Qty | Unit Price | Extended |
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Drop-in alternatives for A54SX32-1TQG144I — same package, pin-to-pin compatible. Different-package parts requiring PCB rework are excluded.
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A54SX32-1TQG144
✅ Drop-In✓ In Stock
$48.1 / Unit
View Datasheet →A54SX32-TQG144I
✅ Drop-In✓ In Stock
$32.3 / Unit
View Datasheet →A54SX32-TQG144
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$1387.71 / Unit
View Datasheet →A54SX32-2TQG144I
✅ Drop-In✓ In Stock
$45.6 / Unit
View Datasheet →A54SX32-P1TQG144I
✅ Drop-In📋 Reference alternative (not in catalog)
A54SX32A-2TQG144I
✅ Drop-In📋 Reference alternative (not in catalog)
A54SX32-1TQG144I Maximum Ratings & Electrical Characteristics
| Family | Actel SX (54SX) |
| System Gates | 32000 gates |
| Logic Cells | 1800 cells |
| User I/O | 113 I/O |
| Maximum Toggle Frequency | 280 MHz |
| Process Technology | 0.35 um CMOS |
| Supply Voltage | 3.3 V / 5 V |
| Program Technology | Antifuse (one-time programmable) |
| Architecture | Sea-of-modules (C-cell + R-cell) |
| Speed Grade | -1 |
| Operating Temperature | -40C to +85C (Industrial) |
| Package | 144-Pin TQFP (S-PQFP-G144) |
| Mounting Type | Surface Mount |
| Lead Free | Yes |
| RoHS Status | Compliant |
A54SX32-1TQG144I 144-pin tqfp (s-pqfp-g144) Pin Configuration Guide
Complete pinout information for A54SX32-1TQG144I (144-pin tqfp (s-pqfp-g144) 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 A54SX32-1TQG144I.
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
A54SX32-1TQG144I is suitable for 6 applications: Industrial Control and Automation, Communications and Protocol Bridging, Aerospace and Defense Ground Equipment, Medical Instrumentation, Test and Measurement Equipment, Legacy System Sustainment and BOM Rescue.
Industrial Control and Automation
The A54SX32-1TQG144I fits industrial control and factory automation logic because its 32,000 gates and 1,800 cells consolidate address decoding, state machines, and protocol glue logic that would otherwise occupy dozens of discrete TTL devices. The 113 user I/O in the 144-pin TQFP interface directly with PLC backplanes, motor controllers, and sensor banks, while the industrial -40C to +85C rating covers unconditioned cabinets. Its antifuse fabric powers up instantly with configuration intact, eliminating the configuration-loading gap SRAM FPGAs require, and the 280 MHz toggle capability handles fast counter and encoder processing. One trade-off: since it is one-time programmable, field firmware changes require a new programmed device, so hold programmed spares in stock.
Recommended
Communications and Protocol Bridging
In communications equipment, the A54SX32-1TQG144I serves as a protocol bridge and framer, using its sea-of-modules C-cell/R-cell architecture to implement parallel serial converters, UART banks, and bus arbitration at toggle rates up to 280 MHz. The 3.3V/5V dual supply domains allow direct connection to both legacy 5V line-card logic and modern 3.3V PHYs without level-shifting overhead, a significant advantage when retrofitting legacy telecom shelves. The 144-pin TQFP offers a practical 0.5 mm-pitch footprint for two- and four-layer boards. Because antifuse configuration cannot be read back, it also protects proprietary framing IP in deployed network hardware.
Recommended
Aerospace and Defense Ground Equipment
Actel antifuse FPGAs have a long heritage in defense systems, and the A54SX32-1TQG144I suits ground-based defense electronics, test sets, and instrumentation where deterministic instant-on behavior and configuration security are mandatory. The sea-of-modules architecture delivers ASIC-like integration of interface logic, and Microchip's related RTAX radiation-tolerant family shares design methodology, easing path-to-flight for programs that later migrate. The industrial -40C to +85C grade covers fielded ground equipment enclosures. Note that this commercial-silicon part is not rad-tolerant: for spaceflight payloads, select RTAX2000S or RTAX250S devices, reusing the same Libero design flow and verification collateral.
Recommended
Medical Instrumentation
Medical diagnostic and monitoring instruments benefit from the A54SX32-1TQG144I's deterministic behavior: configuration is resident in antifuse interconnect, so the logic is operational within nanoseconds of power application - critical for patient-connected equipment with power-on self-test requirements. The 1,800-cell fabric implements acquisition sequencing, filter front-end control, and display-interface glue logic, while 113 user I/O connect ADCs, front-end analog modules, and communication ports. Low static power from the antifuse fabric supports convection-cooled desktop instruments without fan noise. The one-time-programmable nature also aids regulatory traceability: the shipped configuration cannot be altered in the field, matching design-control documentation.
Recommended
Test and Measurement Equipment
The 280 MHz toggle capability of the A54SX32-1TQG144I makes it well suited to test and measurement platforms: counter/timer channels, trigger logic, pattern generators, and bus-interface adapters. The R-cell registers provide fast, predictable setup-to-clock paths for time-critical acquisition paths, while the -1 speed grade timing model in the Microchip design software allows accurate static timing analysis before committing silicon. The 5V-tolerant 3.3V/5V I/O domain simplifies interfacing with legacy GPIB-adjacent and rack backplane signals common in instrument clusters. Instruments benefit from the fixed, nonvolatile configuration: every unit behaves identically at every power-up, supporting calibration stability across service intervals.
Recommended
Legacy System Sustainment and BOM Rescue
A primary modern use of the A54SX32-1TQG144I is legacy-system sustainment: many rail, energy, avionics-test, and industrial platforms were designed around Actel SX antifuse FPGAs in the 1990s-2000s and remain in service. When these parts vanish from franchised distribution, sourcing genuine, date-code-verifiable A54SX32-1TQG144I devices preserves the qualified design without any PCB or logic rework. Since the fabric is one-time programmable, replacement devices must be programmed from the archived design database; teams should regenerate programming files with current Libero releases to confirm toolchain compatibility. XAIPART stocks the full TQG144 variant family to cover temperature and speed-grade substitutions.
Recommended
Recommended Products Summary
Engineering reference data for A54SX32-1TQG144I — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | A54SX32-1TQG144 | A54SX32-2TQG144I | A54SX32A-2TQG144I | A54SX32-P1TQG144I |
|---|---|---|---|---|---|
| Package | TQFP-144 (S-PQFP-G144) | TQFP-144 - same | TQFP-144 - same | TQFP-144 - same | TQFP-144 - same |
| Brand | Microsemi (Microchip Technology) | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| System Gates | 32000 gates | 32000 gates | 32000 gates | 32000 gates (SX-A) | 32000 gates |
| Speed Grade | -1 | -1 | -2 (faster) | -2 (faster, SX-A) | P1 |
| Maximum Toggle Rate | 280 MHz | 280 MHz | [DATA_NEEDED] | [DATA_NEEDED] | 280 MHz |
| User I/O | 113 I/O | 113 I/O | 113 I/O | [DATA_NEEDED] | 113 I/O |
| Operating Temperature | -40C to +85C (Industrial) | 0C to +70C (Commercial) | -40C to +85C (Industrial) | -40C to +85C (Industrial) | -40C to +85C (Industrial) |
| Supply Voltage | 3.3 V / 5 V | 3.3 V / 5 V | 3.3 V / 5 V | 3.3 V / 5 V | 3.3 V / 5 V |
Key Differentiators
- Industrial temperature rating for fielded equipment (vs A54SX32-1TQG144)
- Faster timing headroom available in same footprint (vs A54SX32-2TQG144I)
- SX antifuse security vs SX-A migration path (vs A54SX32A-2TQG144I)
Design Notes
The A54SX32-1TQG144I uses separate supply domains per the 54SX family datasheet: VCCI for I/O buffers (3.3V or 5V), VCCA for the core array, and VPP for programming. Decouple each domain independently with 0.1uF ceramic capacitors per supply pin group plus bulk capacitance at the board entry point. Antifuse FPGAs draw near-zero static current (configuration stored in hardware), so total power is dominated by dynamic switching - estimate Icc from your toggle-rate profile in the Libero power calculator rather than copying worst-case datasheet numbers.
This is a one-time-programmable (OTP) antifuse device. It cannot be reprogrammed, so never treat it like an SRAM FPGA during prototyping: burn a device only after timing simulation passes with post-place-and-route delays. Production flows must program parts off-board before assembly, or allocate a programming-access strategy. Keep your archived Designer/Libero project and programming files under revision control - a lost design database cannot be recovered from a programmed device.
The 144-pin TQFP has 0.5 mm lead pitch with leads extending on all four sides. Use gull-wing footprints per the mechanical drawing in the 54SX family datasheet, with solder-mask-defined or non-solder-mask-defined pads per your assembly house capability. Thermal relief is typically unnecessary because the TQFP-144 plastic package dissipates only moderate power for typical SX designs; still, connect the center ground region of the footprint to a solid ground plane for return-current integrity on fast (280 MHz-class) internal toggles.
When driving 5V-tolerant VCCI banks at high toggle rates, control edge rates and add series termination (22-33 ohm) on lines leaving the board or running longer than a few inches on the PCB. Group fast-switching outputs on grounds adjacent to their VCCI returns in the pinout, and avoid simultaneously switching more outputs than your power budget and ground-return design support - SX I/O banks can generate ground bounce if whole banks switch in phase.
Compliance Information
Distributor listings (PCB Electronics Supply Chain) explicitly identify the A54SX32-1TQG144I as LEAD FREE. RoHS compliance per Microchip product catalog; REACH and halogen-free status not stated in provided data.
