A54SX32-1TQG176I - SX FPGA 32K Gates 280MHz | Microsemi
MPN: A54SX32-1TQG176I ✗ End of Life| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $68.5 | $68.50 |
| 10 | $62.1 | $621.00 |
| 100 | $55.9 | $5,590.00 |
| 500 | $50.3 | $25,150.00 |
| 1,000 | $45.2 | $45,200.00 |
Drop-in alternatives for A54SX32-1TQG176I — same package, pin-to-pin compatible. Different-package parts requiring PCB rework are excluded.
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A54SX32-2TQG176
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View Datasheet →A54SX32-TQG176I
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$86.75 / Unit
View Datasheet →A54SX32-TQG176
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$31.2 / Unit
View Datasheet →A54SX32A-1TQG176I
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A54SX32-1TQG176
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$43.6 / Unit
View Datasheet →A54SX32-1TQG176I Maximum Ratings & Electrical Characteristics
| Manufacturer | Microsemi Corporation |
| Series | SX (Actel 54SX) |
| Number of System Gates | 32000 gates |
| Logic Cells (Modules) | 1800 cells |
| Maximum System Frequency | 280 MHz |
| Process Technology | 0.35 um |
| Supply Voltage - Core/VIO | 3V ~ 3.6V, 4.75V ~ 5.25V (3.3V/5V) |
| Number of User I/O | 147 |
| Package | 176-TQFP (24x24 mm), 176-LQFP |
| Mounting Type | Surface Mount |
| Temperature Grade | Industrial (-40C to +85C) |
| Programming Type | One-Time Programmable (antifuse) |
| Architecture | Sea-of-modules |
| Lead Free Status | Lead Free |
| RoHS Status | RoHS Compliant |
A54SX32-1TQG176I 176-tqfp (24x24 mm), 176-lqfp Pin Configuration Guide
Complete pinout information for A54SX32-1TQG176I (176-tqfp (24x24 mm), 176-lqfp 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 A54SX32-1TQG176I.
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
A54SX32-1TQG176I is suitable for 6 applications: Industrial Control Systems, Telecommunications Line Cards, Aerospace and Defense Subsystems, Legacy Logic Consolidation, Mixed-Voltage Bridge Logic, Test and Measurement Adapters.
Industrial Control Systems
The A54SX32-1TQG176I fits industrial control boards that need deterministic glue logic, state machines, and bus interfacing across mixed 3.3V and 5V domains. Its 32,000 gates and 1,800 logic cells consolidate dozens of 74-series devices into one chip, cutting BOM cost and board area, while 147 user I/O handle parallel address/data buses, encoders, and sensor interfaces. The one-time-programmable antifuse fabric cannot lose configuration during brownouts - a critical reliability advantage over SRAM FPGAs on uncontrolled factory power rails. With an industrial rating of -40C to +85C, it operates directly in unconditioned cabinets. A trade-off is that OTP programming is irreversible, so designs must be fully verified before production programming.
Recommended
Telecommunications Line Cards
Telecom line cards historically used SX-family antifuse FPGAs for framing, TDM switching, and backplane interfacing at line rates well within the 280 MHz system capability. The dual-supply I/O support (3V to 3.6V and 4.75V to 5.25V) lets the A54SX32-1TQG176I bridge legacy 5V backplane signaling to 3.3V processor domains on one die - a key reason telecom OEMs standardized on the 54SX family. The sea-of-modules architecture delivers low, deterministic routing skew, important for parallel data alignment. In repair and sustainment of installed telecom equipment, this part allows board-level service without redesign, and its RoHS-compliant lead-free build satisfies environmental mandates on replacement assemblies.
Recommended
Aerospace and Defense Subsystems
Antifuse FPGAs are inherently resistant to configuration upsets and robbing, which made Actel/Microsemi devices a staple in defense electronics. The A54SX32-1TQG176I, with 32K gates and OTP configuration, serves in radar control interfaces, telemetry encoders, and test-set adapters where a corrupted bitstream is unacceptable. Its 0.35 um process is tolerant of legacy 5V signaling common in military platforms, and the 176-pin TQFP is hand-reworkable for low-volume production. Note that for flight-critical radiation environments, the related RTAX family (e.g., RTAX2000S) is the qualified upgrade path; this SX device is best for ground-based and benign-environment defense hardware where the OTP advantage still matters.
Recommended
Legacy Logic Consolidation
Designers sustaining mixed 3.3V/5V boards use the A54SX32-1TQG176I to consolidate remaining PLD, PAL, and discrete logic into one FPGA after the original devices become obsolete. The 280 MHz performance ceiling is far above legacy glue-logic timing needs, giving generous margin, and 147 user I/O cover typical 32-bit bus plus control信号 requirements. Because the antifuse fabric is programmed once, the resulting chip behaves like an ASIC - no configuration device, no boot sequence, and no accidental reprogramming. This makes it an excellent last-time-buy target: the same 176-TQFP footprint can absorb successive redesigns of the bitstream without PCB changes, protecting the investment in existing boards.
Recommended
Mixed-Voltage Bridge Logic
Boards that combine modern 3.3V controllers with legacy 5V peripherals need voltage translation and control logic at the boundary. The A54SX32-1TQG176I addresses this directly with dual supply ranges (3V to 3.6V and 4.75V to 5.25V), allowing a single device to interface both domains without discrete level shifters, reducing parts count and translation latency. Typical bridges include microprocessor to ISA-style peripherals, 5V sensor buses to 3.3V DSPs, and 5V display interfaces. The industrial temperature rating supports outdoor and unheated enclosures. When planning the bridge, budget I/O carefully: 147 user I/O is generous but the 0.35 um output drivers have fixed drive characteristics, so bus loading should be checked against datasheet DC characteristics.
Recommended
Test and Measurement Adapters
Instrument adapters and fixture controllers benefit from the A54SX32-1TQG176I combination of 280 MHz timing capability, 147 I/O, and one-time-programmable security. Bench fixtures that emulate protocol targets, pattern generators, and bus analyzers use the FPGA to produce precisely timed multi-channel stimulus; the sea-of-modules fabric keeps channel-to-channel skew low and deterministic. OTP programming prevents fixture firmware from being read out or altered on shared lab equipment, and the 176-TQFP package allows replacement if a fixture is damaged. Since instruments operate in 0C to +50C environments, the commercial-temperature A54SX32-1TQG176 can be chosen for lower cost where the industrial rating is unnecessary.
Recommended
Recommended Products Summary
Engineering reference data for A54SX32-1TQG176I — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | A54SX32-2TQG176 | A54SX32-TQG176I | A54SX32A-1TQG176I |
|---|---|---|---|---|
| Package | 176-TQFP (24x24 mm) | 176-TQFP - same | 176-TQFP - same | 176-TQFP - same |
| Brand / Family | Microsemi, SX | Microsemi, SX | Microsemi, SX | Microsemi, SX-A |
| System Gates | 32,000 gates | 32,000 gates | 32,000 gates | 32,000 gates |
| Maximum Frequency | 280 MHz | 320 MHz | 280 MHz | [DATA_NEEDED] |
| Supply Voltage | 3V ~ 3.6V, 4.75V ~ 5.25V | 3V ~ 3.6V, 4.75V ~ 5.25V | 3V ~ 3.6V, 4.75V ~ 5.25V | 2.25V ~ 5.25V |
| User I/O | 147 | 147 | 147 | 147 |
| Temperature Rating | Industrial (-40C to +85C) | Commercial | Industrial | Industrial |
| RoHS / Lead Free | Compliant / Yes | Compliant / Yes | Compliant / Yes | Compliant / Yes |
Key Differentiators
- Faster speed grade option (vs A54SX32-2TQG176)
- Wider supply tolerance in SX-A successor (vs A54SX32A-1TQG176I)
- True OTP antifuse configuration (vs SRAM FPGAs (Xilinx/Altera equivalents))
Design Notes
The A54SX32-1TQG176I uses dual supply rails: a 3.3V-class rail (3.0V to 3.6V) and a 5V-class rail (4.75V to 5.25V). Provide independent decoupling - at least 0.1 uF ceramic per supply pin pair plus 10 uF bulk per rail. Sequence both rails within datasheet limits to avoid latch-up during power-up. Because antifuse devices draw near-zero static configuration current, total consumption is dominated by dynamic switching; power estimation should use Libero/Microsemi power tools for the actual design rather than worst-case family figures.
This is a one-time-programmable antifuse device - there is no rework path after programming. Verify the design fully in simulation and, ideally, on a development device of the same die before blowing production units. Programmers for the SX family (Silicon Sculptor family) must be available in production; confirm programmer firmware supports the A54SX32 before committing to the part. Also note the I suffix denotes industrial temperature: substituting a commercial-temp variant on an industrial board risks out-of-spec timing at temperature extremes.
The 176-TQFP (24x24 mm) has a 0.5 mm lead pitch - use a standard TQFP-176 land pattern per the manufacturer package drawing and inspect solder joints with magnification or X-ray for bridges on the fine-pitch perimeter. Keep high-speed clock traces short and reference a solid ground plane; the sea-of-modules fabric supports internal clock routing, so favor the dedicated clock inputs over general-purpose I/O for timing-critical signals. Corner pins carry multiple supplies on this package - verify continuity on the layout netlist against the datasheet pin table.
Compliance Information
RoHS Compliant and Lead Free per distributor specification data for A54SX32-1TQG176I. REACH, halogen-free, and conflict-minerals status not stated in provided data.
