A54SX08-2TQG144I - SX FPGA 8K Gates 144-TQFP | Microsemi
MPN: A54SX08-2TQG144I ✗ End of Life| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $281.84 | $281.84 |
| 10 | $267.75 | $2,677.50 |
| 100 | $253.66 | $25,366.00 |
| 500 | $239.57 | $119,785.00 |
| 1,000 | $225.48 | $225,480.00 |
Drop-in alternatives for A54SX08-2TQG144I — same package, pin-to-pin compatible. Different-package parts requiring PCB rework are excluded.
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A54SX08-2TQG144
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View Datasheet →A54SX08-1TQG144I
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View Datasheet →A54SX08-TQG144I
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View Datasheet →A54SX08-2TQG176I
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View Datasheet →A54SX32-TQG144I
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View Datasheet →A54SX08-2TQG144I Maximum Ratings & Electrical Characteristics
| Family | Actel SX |
| System Gates | 8000 |
| Logic Cells (Modules) | 512 |
| User I/O | 113 |
| System Frequency | 320 MHz |
| Process Technology | 0.35 um |
| Core Supply Voltage | 3 V to 3.6 V (3.3 V nominal) |
| I/O Supply Voltage | 4.75 V to 5.25 V (5 V nominal) |
| Speed Grade | -2 |
| Package | 144-LQFP / TQFP (20x20 mm), 0.5 mm pitch |
| Mounting Type | Surface Mount |
| Operating Temperature | Industrial (I suffix) |
| Programming Technology | Antifuse (one-time programmable) |
| Packaging | Tray |
| Series | SX |
A54SX08-2TQG144I 144-lqfp / tqfp (20x20 mm), 0.5 mm pitch Pin Configuration Guide
Complete pinout information for A54SX08-2TQG144I (144-lqfp / tqfp (20x20 mm), 0.5 mm pitch 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 A54SX08-2TQG144I.
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
A54SX08-2TQG144I is suitable for 6 applications: Industrial Automation Control, Telecommunications Line Cards, Military and Aerospace Subsystems, Legacy 5V System Upgrades and Obsolescence Management, Test and Measurement Instrumentation, Medical Device Control Electronics.
Industrial Automation Control
The A54SX08-2TQG144I fits industrial automation controllers that need deterministic, high-speed logic between sensors, PLC backplanes, and actuator drives. Its 320 MHz system performance (-2 speed grade) and antifuse routing deliver fixed, jitter-free timing that SRAM FPGAs cannot match without careful constraint closure, while the 113 user I/O consolidate glue logic, encoders, and bus interfaces into one device. Dual 3.3V/5V supply operation allows direct connection to legacy 5V TTL I/O common on factory floors, avoiding level shifters. Placed as the main sequencing and interconnect fabric, it runs state machines at multi-tens-of-MHz with predictable propagation delay from the 0.35um antifuse process, and its industrial temperature rating supports cabinet-mounted electronics.
Recommended
Telecommunications Line Cards
Telecom line cards historically used Actel SX FPGAs for high-speed framing, multiplexing, and backplane interfacing, and the A54SX08-2TQG144I sustains these designs with 320 MHz-class performance and deterministic antifuse timing. The device's sea-of-modules architecture keeps routing delay low and uniform, which matters for TDM data paths and clock-domain crossings at line rates. Its 5V-tolerant I/O rails (4.75-5.25V operation) interface directly to legacy backplane standards, and the industrial temperature grade suits outdoor plant equipment. As a one-time-programmable device, it starts instantly at power-up with no configuration ROM, reducing boot time on hot-swappable cards and eliminating configuration-corruption failure modes in long-life network infrastructure.
Recommended
Military and Aerospace Subsystems
Antifuse FPGAs are prized in defense electronics because their one-time-programmed configuration is inherently immune to configuration upsets that flip SRAM cells, giving the A54SX08-2TQG144I a robustness advantage in harsh environments. With 8,000 gates, 512 cells, and 113 I/O at 320 MHz, it implements bus interfaces, telemetry encoders, and control sequencing in avionics and ground systems. Instant-on operation eliminates configuration devices and their associated failure points, while the industrial temperature range supports conduction-cooled enclosures. Designers should complete full timing simulation and design sign-off before programming, since antifuse devices cannot be reprogrammed in the field - a constraint that matches the change-control discipline of defense programs.
Recommended
Legacy 5V System Upgrades and Obsolescence Management
The A54SX08-2TQG144I is a preferred consolidation vehicle for sustaining legacy products built around 5V TTL/ALS/FAST logic. Because it operates its I/O from a 4.75-5.25V rail directly (with 3.0-3.6V core), dozens of 74-series devices - decoders, registers, comparators, and glue logic - can be absorbed into one 144-TQFP package without level translation, PCB redesign of voltage domains, or new power trees. At 8,000 gates (512 cells), typical consolidation projects for PAL/GAL arrays and SSI/MSI circuits fit comfortably, and the 320 MHz timing ceiling far exceeds original discrete-logic speeds. For end-of-life management, its pin-compatible family variants (A54SX16, A54SX32 in TQFP-144) provide forward density headroom.
Recommended
Test and Measurement Instrumentation
Bench and automated test equipment benefit from the A54SX08-2TQG144I's deterministic timing: trigger logic, timing generators, and counters built in the FPGA exhibit repeatable, calibrated delays because antifuse routing does not vary between units. The 320 MHz system performance supports fast trigger paths, and 113 user I/O connect to front-end comparators, level shifters, and backplane interfaces. Dual-rail 3.3V/5V operation integrates with mixed-voltage instrument architectures common in 1990s-2000s platforms still under service contracts. Because the configuration is permanent, instruments power up ready in under a millisecond - valuable for rack systems with sequenced start-up - and field units cannot be corrupted by configuration memory errors during transport or ESD events.
Recommended
Medical Device Control Electronics
Non-portable medical and laboratory equipment - analyzers, imaging subsystem tables, and therapy control units - uses antifuse FPGAs like the A54SX08-2TQG144I where predictable fixed-timing logic and instant-on operation support safety and uptime requirements. The 8,000-gate capacity handles motor sequencing, interlock logic, and sensor aggregation; the 113 I/O with 5V-tolerant rails interface to optomechanical limit switches and legacy sensors. Deterministic antifuse delays simplify worst-case timing analysis required in design-history files, and the absence of a configuration flash removes a regulatory re-verification variable. The industrial temperature rating covers warm instrument enclosures, and one-time programming supports configuration-management practices under quality systems.
Recommended
Recommended Products Summary
Engineering reference data for A54SX08-2TQG144I — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | A54SX08-2TQG144 | A54SX08-1TQG144I | A54SX08-TQG144I | A54SX32-TQG144I |
|---|---|---|---|---|---|
| Package | 144-TQFP (20x20 mm) | 144-TQFP (20x20 mm) - same | 144-TQFP (20x20 mm) - same | 144-TQFP (20x20 mm) - same | 144-TQFP - same footprint |
| Brand | Microsemi | Microsemi | Microsemi | Microsemi | Microsemi |
| System Gates | 8000 | 8000 | 8000 | 8000 | 36000 |
| Logic Cells | 512 | 512 | 512 | 512 | [DATA_NEEDED] |
| User I/O | 113 | 113 | 113 | 113 | [DATA_NEEDED] |
| Speed Grade / System Performance | -2 (320 MHz) | -2 (320 MHz) | -1 (lower than 320 MHz) | Standard (lower than 320 MHz) | Standard SX32 grading |
| Temperature Range | Industrial (I) | Commercial | Industrial (I) | Industrial (I) | Industrial (I) |
| Supply Voltage | 3V~3.6V and 4.75V~5.25V | 3V~3.6V and 4.75V~5.25V | 3V~3.6V and 4.75V~5.25V | 3V~3.6V and 4.75V~5.25V | [DATA_NEEDED] |
| Programming Technology | Antifuse (OTP) | Antifuse (OTP) | Antifuse (OTP) | Antifuse (OTP) | Antifuse (OTP) |
| Unit Price (qty 1, as of 2026-09-03) | $281.84 | [DATA_NEEDED] | [DATA_NEEDED] | [DATA_NEEDED] | [DATA_NEEDED] |
Key Differentiators
- Fastest speed grade in the SX08 TQFP-144 family (vs A54SX08-1TQG144I)
- Industrial temperature qualification (vs A54SX08-2TQG144)
- Dual 3.3V/5V supply operation (vs Modern SRAM FPGAs (e.g., Artix-7 class))
- Cost-optimal density within same footprint (vs A54SX32-TQG144I)
Design Notes
The A54SX08-2TQG144I requires two supply rails: a 3.3V core rail (3.0V-3.6V) and a 5V I/O rail (4.75V-5.25V) per the manufacturer specifications. Sequence or design the rails so the core is stable before heavy 5V I/O switching; decouple each rail with at least 10 uF bulk plus 0.1 uF ceramic per power pin, placed within 5 mm of the TQFP supply pins. Estimated: quiescent power is low for antifuse logic (no configuration current), but dynamic power scales with clock frequency and toggle rate - budget I/O current per pin against the 5V rail regulator.
Antifuse FPGAs are one-time programmable: there is no rework path after programming. Complete full functional simulation, static timing analysis at the -2 speed grade in Actel Designer/Libero, and design sign-off before committing devices. Also note the lifecycle risk: the SX family is discontinued (data last published 2006), so verify remaining stock at DigiKey/Mouser as of 2026-09-03 and secure last-time-buy quantities, or pre-qualify the SX-A successor (A54SX08A-2TQG144I) for future builds.
The 144-TQFP (20x20 mm) has a 0.5 mm pin pitch - use a proven TQFP-144 land pattern per the datasheet mechanical drawing and inspect solder joints with magnification or X-ray, since 0.5 mm pitch is susceptible to bridging in reflow. Provide a solid ground plane and short return paths for the 113 user I/O; for 5V-tolerant I/O driving legacy TTL buses, add series termination (estimated: 22-33 ohm) to control reflections on long traces. Keep unused I/O configured per datasheet guidance rather than left floating.
The antifuse architecture gives deterministic, low-skew routing, but external signal integrity still depends on board design. For clock distribution into the device, keep the clock trace short and referenced to a continuous ground plane; the 320 MHz system performance ceiling means edge rates are fast enough to care about stubs and vias. When mixing 3.3V core domains with 5V I/O domains on the same board, route the two domains with clearance and verify no 5V signal can reach core-side nets during faults.
Compliance Information
Compliance status for this mature EOL device was not stated in the verified web data; obtain the compliance certificate from Microchip Technology or the distributing supplier before ordering.
