A54SX32A-TQG176I - 32K Gates SX-A FPGA 176-TQFP | Microsemi
MPN: A54SX32A-TQG176I ✓ Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $62.5 | $62.50 |
| 10 | $56.8 | $568.00 |
| 100 | $51.2 | $5,120.00 |
| 500 | $47.6 | $23,800.00 |
| 1,000 | $43.9 | $43,900.00 |
Drop-in alternatives for A54SX32A-TQG176I — same package, pin-to-pin compatible. Different-package parts requiring PCB rework are excluded.
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A54SX32-TQG176I
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$86.75 / Unit
View Datasheet →A54SX32-TQ176I
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View Datasheet →A54SX32-TQ176
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View Datasheet →A54SX32-1TQG176
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View Datasheet →A54SX32-2TQG176I
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View Datasheet →A54SX32A-TQG176I Maximum Ratings & Electrical Characteristics
| Logic Gates | 32000 gates |
| Logic Modules (Cells) | 1800 cells |
| User I/O | 147 |
| Maximum Internal Frequency | 238 MHz |
| Process Technology | 0.25 um |
| Supply Voltage | 2.25 V to 5.25 V |
| Core Supply Voltage | 2.5 V |
| Package | 176-TQFP (24x24 mm) |
| Mounting Type | Surface Mount |
| Clock-to-Out (Pin-to-Pin) | 3.7 ns |
| Input Set-Up Time | 0.1 ns |
| Clock Skew | 0.25 ns |
| Operating Temperature Grade | Industrial (I suffix) |
| Packaging | Tray |
| Family | SX-A (Actel/Microsemi/Microchip) |
| Architecture | Sea-of-modules (R-cell and C-cell) |
A54SX32A-TQG176I 176-tqfp (24x24 mm) Pin Configuration Guide
Complete pinout information for A54SX32A-TQG176I (176-tqfp (24x24 mm) 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 A54SX32A-TQG176I.
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
A54SX32A-TQG176I is suitable for 6 applications: Industrial Control and Automation, Communications and Networking Equipment, Aerospace and Defense Legacy Sustainment, Test and Measurement Instrumentation, Medical Device Control Logic, 5G-Adjacent Infrastructure and Baseband Glue Logic.
Industrial Control and Automation
The A54SX32A-TQG176I fits industrial control and automation systems because its industrial temperature grade (I suffix), 2.25V to 5.25V supply tolerance, and 147 user I/O support direct interfacing with PLC backplanes, motor controllers, and legacy 5V logic. With 32,000 gates and 1800 logic modules, it integrates address decoding, bus bridging, sequencers, and I/O expansion that previously occupied several TTL devices. Placed as the single-chip control fabric between a microprocessor and field I/O, it delivers 3.7 ns pin-to-pin clock-to-out for deterministic response, while its antifuse-based configuration is active at power-up with no boot device, eliminating configuration-time delays that matter in safety-relevant machinery startup sequences.
Recommended
Communications and Networking Equipment
In networking and communications equipment, the A54SX32A-TQG176I serves as glue logic between line cards, backplanes, and processors. Its 238 MHz internal performance class, 0.1 ns input setup, and 0.25 ns clock skew support synchronous data-path control at line-card rates, while the 176-TQFP 24x24 mm package suits 3U/6U CompactPCI and similar card-based form factors. The sea-of-modules architecture achieves 100% resource utilization with 100% pin locking, so board respins do not force FPGA pin reassignment. Because the SX-A configuration is non-volatile antifuse, line cards power up functional immediately, simplifying hot-swap bring-up and reducing the need for configuration PROMs in telecom racks.
Recommended
Aerospace and Defense Legacy Sustainment
The A54SX32A-TQG176I is widely used to sustain aerospace and defense platforms designed around Actel antifuse FPGAs. Its industrial grade, non-volatile antifuse programming (resistant to configuration upsets and readout), and stable 0.25 um process make it a low-risk choice where redesign qualification is costly. Systems use it for telemetry formatting, bus interface bridging (MIL-STD-1553-adjacent glue logic), and voter/comparator functions. The 32K-gate capacity accommodates moderate control-plane logic while the 147 I/O cover parallel backplanes. Because the device is still procurable through distributors such as DigiKey and Octopart (4 distributors), obsolescence risk for existing programs is reduced compared to fully discontinued actel parts.
Recommended
Test and Measurement Instrumentation
Bench and rack instrumentation uses the A54SX32A-TQG176I as the real-time control fabric between acquisition front ends and processing back ends. The 3.7 ns clock-to-out and 0.25 ns clock skew let designers build tight trigger timing and counter/timer channels, while 32,000 gates implement state machines, histogram logic, and interface sequencing. The 5V-tolerant supply range (2.25V-5.25V) simplifies interfacing with legacy instrument buses and discrete front-end circuitry. Because the antifuse fabric does not require configuration loading, instruments are measurement-ready within milliseconds of power-on, an advantage in automated test equipment (ATE) where per-unit setup time multiplies across high-volume production test.
Recommended
Medical Device Control Logic
Medical diagnostic and monitoring equipment benefits from the A54SX32A-TQG176I as deterministic control logic between sensors, display drivers, and communication interfaces. The industrial temperature tolerance covers typical clinical environments, and the fixed antifuse configuration guarantees identical logic behavior on every power cycle, which supports design verification and regulatory documentation of firmware-independent control paths. With 147 user I/O, one device integrates front-panel switch scanning, LED/lamp control, sensor multiplexing, and host interface handshaking. The 176-TQFP surface-mount package with 0.5 mm class leads supports standard reflow assembly used in medical electronics manufacturing.
Recommended
5G-Adjacent Infrastructure and Baseband Glue Logic
In modern 5G-adjacent infrastructure builds, the A54SX32A-TQG176I is used for control-plane glue logic around higher-performance baseband and RF processing chains: clock distribution control, alarm aggregation, JTAG/serial muxing, and power-sequencing supervision. Its 238 MHz performance class exceeds the needs of these slow-control paths, while the antifuse configuration provides immediate-on operation during fast base-station restarts. The 5V-tolerant I/O range eases integration with legacy monitoring circuitry, and the 176-TQFP 24x24 mm footprint fits standard telecom card layouts. Distributor availability (DigiKey, Mouser, 4 sources via Octopart) supports both new builds and field replacement.
Recommended
Recommended Products Summary
Engineering reference data for A54SX32A-TQG176I — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | A54SX32-TQG176I | A54SX32-TQ176I | A54SX32-TQ176 | A54SX32-1TQG176 | A54SX32-2TQG176I |
|---|---|---|---|---|---|---|
| Package | 176-TQFP (24x24 mm) | 176-TQFP (24x24 mm) - same | 176-TQFP (24x24 mm) - same | 176-TQFP (24x24 mm) - same | 176-TQFP (24x24 mm) - same | 176-TQFP (24x24 mm) - same |
| Brand | Microsemi (Microchip) | Microsemi (Microchip) | Microsemi (Microchip) | Microsemi (Microchip) | Microsemi (Microchip) | Microsemi (Microchip) |
| Logic Gates | 32000 | 32000 | 32000 | 32000 | 32000 | 32000 |
| Logic Modules | 1800 | 1800 | 1800 | 1800 | 1800 | 1800 |
| User I/O | 147 | 147 | 147 | 147 | 147 | 147 |
| Performance Class | 238 MHz (SX-A) | 238 MHz (SX) | [DATA_NEEDED] | [DATA_NEEDED] | 278 MHz class (-1 grade) | -2 speed grade (fastest SX) |
| Temperature Grade | Industrial (I) | Industrial (I) | Industrial (I) | Commercial | [DATA_NEEDED] | Industrial (I) |
| Supply Voltage | 2.25 V to 5.25 V | 2.25 V to 5.25 V | 2.25 V to 5.25 V | 2.25 V to 5.25 V | 2.25 V to 5.25 V | 2.25 V to 5.25 V |
| Family | SX-A | SX | SX | SX | SX | SX |
Key Differentiators
- SX-A advanced family performance over original SX (vs A54SX32-TQG176I)
- Industrial temperature rating (vs A54SX32-TQ176)
- Cost/performance balance vs faster speed grades (vs A54SX32-1TQG176)
- Antifuse security and instant-on behavior (vs SRAM-based FPGAs)
Design Notes
The A54SX32A-TQG176I specifies a 2.25V to 5.25V supply range with 2.5V core nominal. Decouple each VCC/VDDA pin pair with at least 0.1 uF ceramic capacitors placed within 5 mm of the pin, plus bulk capacitance per the SX-A family datasheet power recommendations. Because antifuse FPGA current is design-dependent, run the Microchip design software power estimator on your final routed netlist rather than relying on typical values, especially at the 238 MHz performance class.
Estimated: the SX-A family datasheet states that thermal characteristics depend on the device and package, operating temperature, operating current, and the system ability to dissipate heat. The 176-TQFP 24x24 mm package dissipates heat primarily through its leads, so provide solid ground and power planes connected to thermal relief patterns under the package. For industrial-ambient enclosures above 70C, calculate junction temperature as TA plus (power x theta_JA from the datasheet package table) and keep TJ below the absolute maximum rating with margin.
The I suffix device is industrial grade; do not substitute commercial-grade variants (e.g., A54SX32-TQ176) in industrial-temperature designs. Antifuse FPGAs are one-time programmable: lock your pin assignments and verify timing in simulation before programming production parts, since a design error cannot be fixed by reconfiguration. When substituting SX-family parts for SX-A parts, FindIC data notes that some electrical characteristics differ - re-verify setup/hold and clock-to-out timing against your system budget.
With 147 user I/O in a 176-TQFP, heavily loaded buses can exceed the 0.25 ns clock skew budget if I/O standards are mixed carelessly. Keep each clock domain on dedicated clock pins, use series termination (22-33 ohm) on fast edges leaving the package, and match trace lengths for synchronous bus groups. Consult the SX-A family datasheet I/O timing tables for the specific input setup (0.1 ns nominal) and output delay values at your speed grade.
Compliance Information
RoHS status not stated in the verified distributor listings for this exact MPN; legacy Microsemi SX-A parts exist in both RoHS and non-RoHS builds. Obtain compliance certificates from the distributor before ordering for restricted markets.
