A54SX08-TQG176 - 12K Gate SX FPGA 176-TQFP | Microchip
MPN: A54SX08-TQG176 ✓ Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $48.5 | $48.50 |
| 10 | $44.1 | $441.00 |
| 100 | $39.8 | $3,980.00 |
| 500 | $36.2 | $18,100.00 |
| 1,000 | $33.5 | $33,500.00 |
Drop-in alternatives for A54SX08-TQG176 — same package, pin-to-pin compatible. Different-package parts requiring PCB rework are excluded.
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A54SX08-1TQG176
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View Datasheet →A54SX16-TQG176
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View Datasheet →A54SX16-1TQG176
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View Datasheet →A54SX16-2TQG176I
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View Datasheet →A54SX16P-TQG176
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View Datasheet →A54SX16-TQG176I
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View Datasheet →A54SX08-TQG176 Maximum Ratings & Electrical Characteristics
| Series | SX (Actel SX Family) |
| System Gates | 12000 (approx.) |
| Logic Cells | 512 |
| Logic Array Blocks (LABs) | 768 |
| Number of I/O | 128 |
| Maximum Frequency | 240 MHz |
| Process Technology | 0.35 um |
| Supply Voltage (Core) | 3 V ~ 3.6 V |
| Supply Voltage (I/O) | 4.75 V ~ 5.25 V |
| Programming Technology | Antifuse (one-time programmable) |
| Package / Case | 176-LQFP (176-TQFP, 24x24 mm) |
| Supplier Device Package | 176-TQFP |
| Mounting Type | Surface Mount |
A54SX08-TQG176 176-tqfp Pin Configuration Guide
Complete pinout information for A54SX08-TQG176 (176-tqfp 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 A54SX08-TQG176.
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
A54SX08-TQG176 is suitable for 6 applications: Industrial Control and Automation, Communications and Networking Equipment, Test and Measurement Instrumentation, Aerospace and Defense Legacy Sustainment, Embedded System Glue Logic and Bus Bridging, Medical Device Control Electronics.
Industrial Control and Automation
The A54SX08-TQG176 fits industrial control and factory automation boards that need deterministic, instantly-available glue logic and protocol conversion. Its 128 user I/O and 3.3 V core / 5 V I/O dual-supply scheme let it bridge legacy 5 V TTL sensors and actuators to modern 3.3 V controllers without level-shift circuits. Because the antifuse fabric is one-time-programmable, the configuration is immune to power-up configuration delays and cannot be corrupted in electrically noisy factory environments, unlike SRAM FPGAs that need a configuration device. Typical roles include PLC I/O expansion, motor-control sequencing, and fieldbus interface bridging, with the 240 MHz class fabric handling timing-critical counter and PWM functions.
Recommended
Communications and Networking Equipment
In telecommunications and networking line cards, the A54SX08-TQG176 serves as a protocol bridge, framer assist, and backplane interface device. The SX family sea-of-modules architecture provides predictable routing delays, which matters for fixed-latency path enforcement in TDM and packet-backplane designs. With 128 I/O in a 24x24 mm 176-TQFP, the device terminates wide parallel buses while consuming moderate board area and power. The antifuse configuration eliminates configuration readout at power-up, reducing link bring-up time in systems with strict startup budgets. Engineers typically clock timing-critical logic from a recovered reference and exploit the dedicated carry chains for counters and CRC-style functions within the approximately 12,000-gate budget.
Recommended
Test and Measurement Instrumentation
Benchtop and modular instrumentation frequently use the A54SX08-TQG176 as timing, triggering, and acquisition-sequencing logic. The SX fabric's deterministic timing supports tight trigger-skew budgets, while 128 I/O address-wide parallel acquisition buses and high-channel-count relay/control matrices. The dual 3.3 V/5 V supply operation simplifies integration into instruments that still carry 5 V logic islands. Antifuse one-time-programmability means the instrument firmware-defined logic loads instantly at power-on, an advantage over SRAM FPGAs that need hundreds of milliseconds for configuration. The roughly 12,000-gate capacity accommodates counter/timer blocks, state machines, and bus-interface logic in a single 176-TQFP device.
Recommended
Aerospace and Defense Legacy Sustainment
Many military and avionics programs were designed around Actel antifuse FPGAs, and the A54SX08-TQG176 remains a sustainment part for these platforms. The antifuse fabric's immunity to configuration memory upset and instant power-up behavior align with program requirements that predate SRAM-FPGA configuration management. The 0.35 um process is well characterized for total-dose behavior relative to modern deep-submicron nodes, and the dual-supply operation matches 5 V/3.3 V mixed legacy buses common in aging platforms. Note that the commercial TQG176 device is not radiation-qualified; new space-flight designs should use the RTAX family, while ground-based defense systems can sustain existing SX08 designs with this MPN.
Recommended
Embedded System Glue Logic and Bus Bridging
The A54SX08-TQG176 is widely used as high-density glue logic replacing dozens of 74-series devices in embedded CPU boards. A single approximately 12,000-gate device absorbs address decoding, interrupt control, wait-state generation, and bus-width conversion between microprocessors and peripherals. The 128 I/O in one 176-TQFP collapses board area and improves reliability by reducing device count and solder joints. Because the design is one-time-programmable, teams must freeze the logic before programming, which suits mature, stable embedded platforms more than rapidly iterating prototypes. The 240 MHz-class fabric comfortably handles microprocessor bus timing, and the 3.3 V/5.0 V dual-supply I/O directly interfaces legacy peripheral families.
Recommended
Medical Device Control Electronics
Medical diagnostic and monitoring equipment benefits from the A54SX08-TQG176's deterministic, fixed-configuration logic for patient-interface sequencing, sensor multiplexing, and safety interlocks. Instant power-up configuration supports the fast-start requirements of portable and cart-based instruments, and the antifuse fabric avoids configuration-storage failures that could delay patient-ready status. The 5 V-tolerant I/O domain interfaces with legacy medical sensor front ends, while the 3.3 V core connects to modern processor subsystems. Designers should treat the one-time-programmable nature as a configuration-management feature: the released medical logic image is physically locked into the device, simplifying design-history documentation and change control under quality-system audits.
Recommended
Recommended Products Summary
Engineering reference data for A54SX08-TQG176 — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | A54SX08-1TQG176 | A54SX16-TQG176 | A54SX16-2TQG176I | A54SX16P-TQG176 |
|---|---|---|---|---|---|
| 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 | Microsemi (Microchip Technology) | Microsemi (Microchip Technology) | Microsemi (Microchip Technology) | Microsemi (Microchip Technology) | Microsemi (Microchip Technology) |
| System Gates | 12000 (approx.) | 12000 (approx.) | 24000 (approx.) | 24000 (approx.) | 24000 (approx.) |
| Number of I/O | 128 | 128 | 128 | 128 | 128 |
| Supply Voltage | 3V~3.6V, 4.75V~5.25V | 3V~3.6V, 4.75V~5.25V | 3V~3.6V, 4.75V~5.25V | 3V~3.6V, 4.75V~5.25V | [DATA_NEEDED] |
| Speed Grade | Standard | -1 (faster) | Standard | -2 (fastest) | Standard (SX16P process) |
| Programming Technology | Antifuse (OTP) | Antifuse (OTP) | Antifuse (OTP) | Antifuse (OTP) | Antifuse (OTP) |
| Temperature Range | Commercial | Commercial | Commercial | Industrial (I suffix) | Commercial |
Key Differentiators
- Identical density at standard speed cost point (vs A54SX08-1TQG176)
- Right-sized density avoids over-buying (vs A54SX16-TQG176)
- Antifuse OTP configuration security (vs SRAM-based FPGAs (e.g., Lattice/Xilinx equivalents))
Design Notes
The A54SX08-TQG176 uses two supply domains: a 3.0-3.6 V core rail and a 4.75-5.25 V I/O rail. Decouple each rail with at least 0.1 uF ceramic capacitors placed within 5 mm of the corresponding supply pins, plus 10 uF bulk capacitance per rail. Antifuse FPGAs draw a configuration-independent static current at power-up, so inrush is dominated by decoupling capacitance rather than configuration fetch - useful for systems with tight power-sequencing windows. Verify per-rail current in the timing report before finalizing regulator sizing.
The device is one-time-programmable (antifuse). Never release a netlist to programming before completing static timing analysis and gate-level simulation in Microchip Libero SoC (legacy Actel Designer flow). A single incomplete verification cycle consumes an irreplaceable packaged device. Recommended practice: hold a minimum 10 percent spares buffer for engineering builds, and lock the pin assignment file early since the 176-TQFP pinout cannot be changed after the PCB is fabricated.
For the 176-TQFP (24x24 mm, 0.5 mm pitch lead frame), use a standard TQFP-176 footprint per the mechanical drawing in the 54SX family datasheet. Keep unused I/O pins programmed as inputs with pull-up or defined drive levels to avoid floating-node noise. Route the core and I/O ground returns as a solid plane; the QFP perimeter lead arrangement means signal integrity for fast switching groups depends on low-inductance return paths. Thermal resistance is adequate for SX08 densities without heatsinking, but confirm against the datasheet theta-JA for your airflow.
Compliance Information
Compliance status for this legacy Microsemi/Microchip SX FPGA was not stated in the retrieved web data; verify RoHS/REACH status via the Microchip product compliance portal before procurement.
