A54SX32-TQ176 - 32K-Gate SX FPGA, TQFP-176 | Microchip
MPN: A54SX32-TQ176 ✗ End of Life| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $68.5 | $68.50 |
| 10 | $61.65 | $616.50 |
| 100 | $54.8 | $5,480.00 |
| 500 | $48.2 | $24,100.00 |
| 1,000 | $42.5 | $42,500.00 |
Drop-in alternatives for A54SX32-TQ176 — same package, pin-to-pin compatible. Different-package parts requiring PCB rework are excluded.
Quick Comparison Tool — Select alternative parts for side-by-side comparison:
A54SX32-TQG176
✅ Drop-In✓ In Stock
$31.2 / Unit
View Datasheet →A54SX32-TQG176I
✅ Drop-In✓ In Stock
$86.75 / Unit
View Datasheet →A54SX32-TQ176I
✅ Drop-In✓ In Stock
Contact for price
View Datasheet →A54SX32-1TQG176
✅ Drop-In ⚠️ 参数待验证✓ In Stock
$43.6 / Unit
View Datasheet →A54SX32-2TQG176
✅ Drop-In ⚠️ 参数待验证✓ In Stock
Contact for price
View Datasheet →A54SX32-2TQG176I
✅ Drop-In ⚠️ 参数待验证✓ In Stock
$55.1 / Unit
View Datasheet →A54SX32-TQ176M
✅ Drop-In✓ In Stock
$135 / Unit
View Datasheet →A54SX32-TQ176 Maximum Ratings & Electrical Characteristics
| System Gates | 32000 gates |
| Logic Cells | 1800 cells |
| Logic Modules (LABs) | 2880 |
| User I/O | 147 |
| Maximum Toggle Frequency | 240 MHz |
| Process Technology | 0.35 um |
| Core Supply Voltage | 3.0 V to 3.6 V |
| I/O Supply Voltage | 4.75 V to 5.25 V |
| Programming Technology | Antifuse (one-time programmable) |
| Family | Actel SX |
| Package | 176-TQFP (24x24 mm) |
| Mounting Type | Surface Mount (SMD/SMT) |
| Operating Temperature | 0 C to 70 C (TA) |
| Lead Free Status | Contains Lead |
| RoHS Status | RoHS Non-Compliant |
| Lifecycle Status | Obsolete (EOL) |
A54SX32-TQ176 176-tqfp (24x24 mm) Pin Configuration Guide
Complete pinout information for A54SX32-TQ176 (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 A54SX32-TQ176.
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-TQ176 is suitable for 6 applications: Telecommunications Line Cards, Industrial Control and PLC I/O Modules, Aerospace and Defense Payload Electronics, Test and Measurement Instrumentation, Networking and Router Control-Plane Glue Logic, Medical Device Legacy Board Maintenance.
Telecommunications Line Cards
The A54SX32-TQ176 fits legacy telecom line-card designs where 5 V-tolerant I/O must directly drive and receive signals from TTL-era framers, T1/E1 line interfaces, and backplane buffers. Its 147 user I/Os consolidate glue logic that previously required multiple PAL/GAL devices, and the antifuse fabric delivers deterministic sub-nanosecond routing delays, enabling fixed setup/hold margins across production units. Because the device is one-time programmable and non-volatile, line cards boot instantly without configuration PROMs - important in carrier equipment with strict uptime requirements. The 240 MHz fabric ceiling comfortably covers E1/T1 (1.544/2.048 Mbps) and Sonet-overhead-rate logic. When servicing these boards today, the green A54SX32-TQG176 variant preserves the exact 176-TQFP footprint while meeting current Pb-free assembly profiles, since leaded TQ176 units cannot pass modern RoHS reflow requirements.
Recommended
Industrial Control and PLC I/O Modules
Industrial I/O cards frequently combine 24 V-field-side buffering with 5 V logic-side interfaces, exactly matching the A54SX32-TQ176's dual-supply architecture: a 3.3 V core (3.0 V to 3.6 V) with 5 V I/O banks (4.75 V to 5.25 V). The 32K system gates and 2880 logic modules absorb counters, quadrature decoders, PWM generators, and interlock logic, while the antifuse technology ensures the configuration is immune to power glitches and cannot be corrupted by noisy industrial environments - a real failure mode for SRAM FPGAs lacking configuration error correction. The commercial 0 C to 70 C rating suits cabinet-mounted controllers; for floor-mounted or outdoor cabinets, select the industrial-grade A54SX32-TQG176I rated -40 C to +85 C, which is pin-to-pin compatible and requires no PCB change, only an updated procurement line and green reflow profile.
Recommended
Aerospace and Defense Payload Electronics
The Actel SX family has a long heritage in aerospace and defense because antifuse FPGAs are inherently single-event-upset tolerant at the configuration layer: once programmed, the routing cannot flip state under radiation, unlike SRAM-based fabrics. The A54SX32-TQ176M is the military-screened version of this same die, sharing the identical 176-TQFP footprint and 147 user I/Os with the commercial TQ176. Typical payload uses include telemetry formatting, command decoders, and sensor-interface consolidation, where the 0.35 um process also offers better total-ionizing-dose tolerance than deep-submicron SRAM FPGAs. The one-time-programmable nature provides anti-tamper benefit by eliminating readable configuration streams. For new qualified designs, Microchip points engineers toward RTAX and RTG4 space families, but for heritage-platform spares and life-extension programs, the TQ176M remains the footprint-compatible sustainment option.
Recommended
Test and Measurement Instrumentation
Bench instruments and ATE modules use the A54SX32-TQ176 for timing-state generation, trigger arbitration, and bus-interface bridging, exploiting its 240 MHz fabric speed and deterministic antifuse routing to produce repeatable channel-to-channel skew. The 5 V-tolerant I/O banks connect directly to legacy GPIB-adjacent and TTL trigger buses, while the 3.3 V core keeps dynamic power manageable inside enclosed instruments; the SX family's sea-of-modules architecture was explicitly positioned by Microchip for power-consumption reduction relative to SRAM FPGAs. Because the configuration is fixed at production, calibration-adjacent logic behaves identically across every unit, simplifying verification. For repair of instruments built before RoHS, the leaded TQ176 matches the original assembly; for rebuilt or green-compliant units, the A54SX32-TQG176 drop-in variant allows lead-free assembly on the same 176-TQFP land pattern without board respin.
Recommended
Networking and Router Control-Plane Glue Logic
Legacy routers, switches, and media converters deployed the SX family to tie together MACs, PHYs, and management controllers, and the A54SX32-TQ176's 147 user I/Os plus 32K gates absorb address decoding, LED steering, MDIO masters, and packet-rate timers in one package. The 3.0 V to 3.6 V core aligns with common 3.3 V backplane rails, while the 4.75 V to 5.25 V I/O operation interfaces with older 5 V transceivers without external level translation. Instant-on antifuse configuration lets the management FPGA be alive before the main CPU boots, enabling early fault detection and watchdog supervision. The 176-TQFP 24x24 mm body keeps 0.5 mm-pitch assembly straightforward on standard SMT lines. Sustainment teams should qualify the RoHS-compliant A54SX32-TQG176 or industrial A54SX32-TQG176I as pin-compatible replacements as leaded TQ176 stock depletes.
Recommended
Medical Device Legacy Board Maintenance
Hospital and laboratory equipment with long certification lifecycles - patient monitors, analyzer front-ends, and imaging control boards - often embed SX-family FPGAs, and field-service repairs must preserve the originally qualified design. The A54SX32-TQ176 supports this use directly: its one-time-programmable antifuse fabric cannot be altered after verification, giving quality systems configuration traceability that reprogrammable devices complicate. The 5 V-tolerant I/O matches the analog-front-end logic levels common in older medical hardware, and the 0 C to 70 C rating covers clinical room environments. Because the commercial TQ176 is leaded and obsolete, service organizations should purchase remaining qualified stock with date-code and authenticity documentation, or seek regulatory approval to substitute the electrically identical, RoHS-compliant A54SX32-TQG176, which shares the same 176-TQFP footprint, pinout, timing, and programming file.
Recommended
Recommended Products Summary
Engineering reference data for A54SX32-TQ176 — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | A54SX32-TQG176 | A54SX32-TQG176I | A54SX32-TQ176I | A54SX32-TQ176M |
|---|---|---|---|---|---|
| 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 |
| Brand | Microchip Technology (Actel/Microsemi) | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| System Gates | 32000 | 32000 | 32000 | 32000 | 32000 |
| User I/O | 147 | 147 | 147 | 147 | 147 |
| Core Supply Voltage | 3.0 V to 3.6 V | 3.0 V to 3.6 V | 3.0 V to 3.6 V | 3.0 V to 3.6 V | 3.0 V to 3.6 V |
| Operating Temperature | 0 C to 70 C (commercial) | 0 C to 70 C | -40 C to +85 C | -40 C to +85 C | Military screening |
| RoHS / Lead Finish | Non-compliant, contains lead (SnPb) | RoHS compliant, lead-free | RoHS compliant, lead-free | Contains lead | Contains lead |
| Lifecycle Status | Obsolete (EOL) | [DATA_NEEDED] | [DATA_NEEDED] | [DATA_NEEDED] | [DATA_NEEDED] |
Key Differentiators
- RoHS-compliant drop-in availability (vs A54SX32-TQG176)
- Wider industrial temperature range (vs A54SX32-TQ176I / A54SX32-TQG176I)
- Configuration security and SEU immunity vs SRAM FPGAs (vs Comparable-capacity SRAM FPGAs (e.g., Xilinx Spartan class))
Design Notes
The A54SX32 requires two supply domains: VCCA core at 3.0 V to 3.6 V and VCI I/O at 4.75 V to 5.25 V per the SX family datasheet. Decouple each VCCA/VCI pin pair with 0.1 uF ceramic capacitors placed within 2 mm of the pin, plus bulk 10 uF per rail. Antifuse FPGAs draw near-zero static current, so rail sizing is driven by dynamic I/O current: estimate I/O current as sum over outputs of (C_load x V x f_switching) and budget regulator headroom accordingly.
The 176-TQFP uses 0.5 mm lead pitch, so specify solder-mask-defined pads per IPC-7351 TQFP conventions and keep fan-out vias dogboned to avoid solder wicking. Because the leaded TQ176 and green TQG176 share the identical footprint, design the land pattern once for the green variant so Pb-free assembly is possible in future rebuilds. Do not connect unused I/O as inputs floating - tie or drive them per Libero place-and-route defaults to avoid floating-gate I/O latch-up risk.
Antifuse programming is permanent: a design error cannot be patched in the field, so run full timing simulation and boundary scan before committing devices to production programming on Silicon Sculptor/FSM programmers. Second pitfall: this commercial 0 C to 70 C part contains lead and is obsolete - using it in new RoHS-regulated products is prohibited in most markets. Third: avoid substituting TQ176 where the board reflow profile exceeds leaded-SnPb temperature limits; use the TQG176 for lead-free assembly.
Compliance Information
Distributor compliance data (chipdig.com) lists Lead Free Status: Contains Lead and RoHS Status: RoHS Non-Compliant for A54SX32-TQ176. Commercial temperature grade (0-70 C), not AEC-Q100 relevant. Use A54SX32-TQG176 for lead-free/RoHS-compliant needs.
