A54SX08-TQG176I - 12K Gate FPGA, 128 I/O | Microsemi
MPN: A54SX08-TQG176I ✓ Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $85 | $85.00 |
| 10 | $78.2 | $782.00 |
| 100 | $70.5 | $7,050.00 |
| 500 | $64 | $32,000.00 |
| 1,000 | $59.75 | $59,750.00 |
Drop-in alternatives for A54SX08-TQG176I — same package, pin-to-pin compatible. Different-package parts requiring PCB rework are excluded.
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A54SX08-TQG176
✅ Drop-In ⚠️ 参数待验证✓ In Stock
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View Datasheet →A54SX16-TQG176I
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View Datasheet →A54SX16-TQG176
✅ Drop-In ⚠️ 参数待验证✓ In Stock
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View Datasheet →A54SX16-1TQG176I
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View Datasheet →A54SX32-TQG176I
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View Datasheet →A54SX32-TQG176
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View Datasheet →A54SX08-TQG176I Maximum Ratings & Electrical Characteristics
| Series | SX (SX-A) |
| System Gates | 12000 |
| Logic Gates / Cells | 8K gates / 512 cells |
| User I/Os | 128 |
| Maximum Toggle Frequency | 240 MHz |
| Process Technology | 0.35 um CMOS |
| Programming Technology | Antifuse (one-time programmable) |
| Supply Voltage (Core/IO) | 3 V to 3.6 V |
| Supply Voltage (Alternate) | 4.75 V to 5.25 V |
| Package / Case | 176-LQFP |
| Supplier Device Package | 176-TQFP (24x24) |
| Mounting Type | Surface Mount |
| Temperature Grade | Industrial (I suffix) |
| Product Type | FPGA - Field Programmable Gate Array |
| Manufacturer | Microsemi Corporation (Microchip Technology) |
A54SX08-TQG176I 176-tqfp (24x24) Pin Configuration Guide
Complete pinout information for A54SX08-TQG176I (176-tqfp (24x24) 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-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
A54SX08-TQG176I is suitable for 6 applications: Industrial Control and Automation, Defense and Aerospace Legacy Board Upgrades, Telecom and Datacom Line Cards, Test and Measurement Equipment, Mixed-Voltage System Glue Logic, Embedded System Prototyping and Small Production.
Industrial Control and Automation
The A54SX08-TQG176I fits industrial control and factory automation boards that need deterministic, instant-on programmable logic. Its 12,000 system gates absorb glue logic, address decoding, PWM generation, and interlock sequencing that previously consumed dozens of discrete 74-series devices, while the 128 user I/Os interface PLC backplanes and sensor buses. The dual 3V-3.6V and 4.75V-5.25V supply range lets one chip bridge legacy 5V TTL field wiring and modern 3.3V controller logic without level shifters. Because the antifuse fabric is nonvolatile, the controller is active the instant power is applied - no configuration delay during machine restart. The industrial temperature grade (I suffix) supports harsh cabinet environments; at 240 MHz toggle capability, timing closure for typical sequencer designs at 25-50 MHz is comfortable with margin.
Recommended
Defense and Aerospace Legacy Board Upgrades
Defense electronics sustainment programs favor the A54SX08-TQG176I because antifuse FPGAs are immune to configuration-memory upset and need no boot device - properties valued in high-reliability platforms. When original gate arrays or obsolete PAL/PLD clusters reach end of life, the SX08's 12,000 gates and 512 cells absorb the replacement logic on a 176-TQFP footprint that hand-assembly and depot rework can handle. The dual 3.3V/5V I/O operation matches the mixed-voltage rails of legacy mil boards, and the industrial temperature grade covers extended environments. Designers should budget one-time-programmability into obsolescence management: keep programmed spare devices and verified programming files under configuration control. Microchip's RTAX radiation-tolerant family provides a growth path if the platform later requires radiation assurance.
Recommended
Telecom and Datacom Line Cards
Telecom line cards historically used the SX family as flexible glue logic between PHY devices, framers, and backplane connectors. The A54SX08-TQG176I serves this role with 128 user I/Os - enough for an 8-bit or 16-bit parallel data path plus control - and 240 MHz toggle capability that comfortably covers PDH/SONET-overhead-style state machines at standard backplane clocks. The antifuse fabric adds no configuration PROM cost per card and eliminates bitstream loading at card insertion, so slots come up live immediately. Dual-supply operation interfaces both 5V and 3.3V backplane signaling standards. For new designs, remember the one-time-programmable trade-off: any logic fix requires a new device, which is acceptable for mature, frozen line-card revisions but not for rapidly iterating prototypes.
Recommended
Test and Measurement Equipment
Bench and rack instruments use the A54SX08-TQG176I for timing generators, counters, and interface adapters where deterministic power-up matters: the antifuse configuration means the measurement subsystem is functional the moment mains is applied, with no loader firmware to fail. Twelve thousand system gates implement trigger state machines, prescalers, and bus bridges (GPIB/serial-to-parallel), while the 240 MHz toggle rate supports high-resolution prescaling ahead of a discrete counter chain. The 128 user I/Os populate front-panel connectors and internal bus interfaces simultaneously. Industrial temperature grading suits portable field instruments. Designers should place the TQFP on a board revision with spare routing channels, since antifuse devices cannot be reprogrammed if a timing bug surfaces after calibration.
Recommended
Mixed-Voltage System Glue Logic
Many retrofit projects must connect 5V microprocessor buses to 3.3V peripherals. The A54SX08-TQG176I addresses this directly with its verified dual supply range of 3V-3.6V and 4.75V-5.25V, allowing its I/O to speak both signaling standards from one device. Twelve thousand gates replace address decoders, wait-state generators, interrupt controllers, and byte-swap logic that would otherwise require several discrete families, and the 176-TQFP package fits the 0.5 mm pitch routing typical of retrofit PCB sections. Because the antifuse fabric is programmed once, the interfacing behavior is fixed and audit-friendly - valuable in safety assessments. Designers should confirm the temperature variant matches the enclosure environment and add standard decoupling on both supply rails, since the two domains draw independently.
Recommended
Embedded System Prototyping and Small Production
For small embedded systems that ship firmware-frozen revisions, the A54SX08-TQG176I provides programmable fabric without BOM cost for configuration memory, simplifying the design of low-volume controllers. Twelve thousand gates host state machines, UART/SPI bridging, and custom peripherals around a host MCU, with 128 user I/Os covering sensors, actuators, and display interfaces. The 24x24 mm TQFP is hand-solderable for prototype builds and uses standard reflow profiles for production. Pricing near 85 USD at single quantity (XAIPART, as of 2026-09-03) falling to roughly 60 USD at 1000 pieces suits pilot runs. The one-time-programmable model is the key trade-off: keep spare programmed units, because a logic change means a fresh device rather than a firmware update.
Recommended
Recommended Products Summary
Engineering reference data for A54SX08-TQG176I — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | A54SX08-TQG176 | A54SX16-TQG176I | A54SX32-TQG176I |
|---|---|---|---|---|
| Package | 176-TQFP (24x24 mm) | 176-TQFP (24x24 mm) - same | 176-TQFP (24x24 mm) - same | 176-TQFP (24x24 mm) - same |
| Brand | Microsemi | Microsemi | Microsemi | Microsemi |
| System Gates | 12,000 | 12,000 | approx. 24,000 | approx. 48,000 |
| Supply Voltage | 3 V - 3.6 V, 4.75 V - 5.25 V | 3 V - 3.6 V, 4.75 V - 5.25 V | 3 V - 3.6 V, 4.75 V - 5.25 V | 3 V - 3.6 V, 4.75 V - 5.25 V |
| Temperature Grade | Industrial (I) | Commercial | Industrial (I) | Industrial (I) |
| Programming Technology | Antifuse (OTP) | Antifuse (OTP) | Antifuse (OTP) | Antifuse (OTP) |
| Relative Cost | Baseline | Slightly lower (commercial grade) | [DATA_NEEDED] | [DATA_NEEDED] |
| Max Toggle Frequency | 240 MHz (family class) | 240 MHz (family class) | [DATA_NEEDED] | [DATA_NEEDED] |
Key Differentiators
- Nonvolatile instant-on operation without configuration memory (vs SRAM-based FPGAs (e.g., Xilinx Spartan class))
- Industrial temperature grade with identical footprint (vs A54SX08-TQG176)
- In-place density upgrade path (vs A54SX32-TQG176I)
Design Notes
Antifuse FPGAs are one-time programmable: once the A54SX08-TQG176I is programmed, its routing is permanent and cannot be erased or updated. Any post-production logic fix requires a physically new device. Maintain verified programming files and a stock of programmed spare units under configuration control, and thoroughly validate the design on the target speed grade before committing production boards. This is the single most consequential difference versus SRAM FPGAs.
The device specifies two independent supply domains: 3V-3.6V and 4.75V-5.25V. Decouple each rail locally with 0.1 uF ceramic capacitors per supply pin group plus bulk capacitance near the device; do not share the 3.3V decoupling network between domains. Verify that the 5V domain sequencing with respect to the 3.3V domain follows the SX family datasheet power-up requirements to avoid latch-up conditions on shared I/O structures.
The 176-TQFP (24x24 mm) has 0.5 mm lead pitch. Use a footprint matching the manufacturer's recommended land pattern, include fiducials for optical alignment, and inspect lead coplanarity before reflow to prevent solder bridging on adjacent pins. Distribute user I/O so that busses keep short, length-matched runs; reserve vias for test-point access on critical nets since antifuse designs cannot be probed internally after programming.
Compliance Information
Compliance status not stated in verified distributor data retrieved 2026-09-03; confirm plating option (SnPb vs lead-free) with manufacturer documentation before ordering.
