A54SX08-PLG84 - 8K Gate SX FPGA, 84-PLCC | Microsemi
MPN: A54SX08-PLG84 ✓ Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $0 | $0.00 |
| 10 | $0 | $0.00 |
| 100 | $0 | $0.00 |
| 500 | $0 | $0.00 |
| 1,000 | $0 | $0.00 |
Drop-in alternatives for A54SX08-PLG84 — 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:
A54SX08-PLG84I
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View Datasheet →A54SX08-2PLG84
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$20.4 / Unit
View Datasheet →A54SX08-2PLG84I
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$17.1 / Unit
View Datasheet →A54SX08-P2PLG84I
✅ Drop-In📋 Reference alternative (not in catalog)
A54SX08-1PLG84I
✅ Drop-In📋 Reference alternative (not in catalog)
A54SX08-PLG84 Maximum Ratings & Electrical Characteristics
| Family | SX (Actel/Microsemi antifuse FPGA) |
| Equivalent System Gates | 8000 gates |
| Logic Cells | 512 cells |
| Number of I/O | 69 |
| Maximum Frequency | 240 MHz |
| Process Technology | 0.35 um CMOS |
| Supply Voltage | 3.3 V / 5 V |
| Programming Technology | Antifuse (one-time programmable) |
| Package | 84-LCC (J-Lead) PLCC |
| Pin Pitch | 1.27 mm |
| Mounting Type | Surface Mount |
| Total Gates of CLBs | 768 CLBs (per A54SX08 series data) |
A54SX08-PLG84 84-lcc (j-lead) plcc Pin Configuration Guide
Complete pinout information for A54SX08-PLG84 (84-lcc (j-lead) plcc 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-PLG84.
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-PLG84 is suitable for 6 applications: Glue Logic Consolidation, Industrial Control Systems, Military and Defense Subsystems, Communications Line Cards, Legacy Board Spares and Obsolescence Management, Test and Measurement Equipment.
Glue Logic Consolidation
The A54SX08-PLG84 excels at replacing dozens of 74-series TTL/CMOS chips with a single 8K-gate antifuse FPGA. Its 69 user I/O and fast, deterministic pin-to-pin timing (240 MHz class) let designers merge address decoders, bus transceivers, state machines, and interrupt controllers into one device, cutting board area and BOM count. Because the antifuse fabric is programmed once, the consolidated logic behaves like an ASIC on power-up with no configuration controller or boot flash required - a decisive advantage over SRAM FPGAs in cost-sensitive legacy boards. The 84-PLCC package also suits older two-sided PCB layouts that cannot accommodate fine-pitch BGAs.
Recommended
Industrial Control Systems
In PLC I/O modules, motor-control interfaces, and factory automation backplanes, the A54SX08-PLG84 provides deterministic, instantly-ready logic at 3.3V/5V levels - directly compatible with legacy 5V industrial buses without level shifters. The industrial-grade A54SX08-PLG84I variant covers extended temperature, and the one-time-programmable antifuse configuration survives power cycles and ESD events with no configuration reload, improving uptime. The robust 84-PLCC J-lead package withstands rework and vibration better than fine-pitch alternatives, and its 1.27 mm pitch is compatible with standard wave-and-reflow mixed-technology assembly used in industrial hardware.
Recommended
Military and Defense Subsystems
The SX family is a long-standing choice in defense electronics because the antifuse configuration is non-volatile and cannot be read back as a bitstream, protecting firmware IP and defeating configuration-upset concerns in ground-based military hardware. The 8K-gate A54SX08-PLG84 implements bus interfaces, telemetry formatting, and secure-boot support logic. Its instant-on behavior meets the power-up immediacy requirements of weapon and radar subsystems, and Microchip's proven longevity program supports long program lives. For radiation-exposed flight paths, Microchip's RTAX-S rad-hard family (e.g., RTAX1000SL) provides the migration path.
Recommended
Communications Line Cards
Telecom and datacom line cards historically used SX FPGAs for framing, error detection, and backplane interface logic. The A54SX08-PLG84's 240 MHz toggle capability and FastConnect routing handle counters, CRC engines, and protocol state machines at legacy T1/E1 and backplane rates. The 3.3V/5V tolerant I/O connects directly to 5V TTL backplane signals common in installed telecom chassis, and the antifuse fabric adds no configuration latency at card slot-in. The 84-PLCC footprint also matches the through-hole-repair practices of telecom field service, simplifying maintenance of deployed racks.
Recommended
Legacy Board Spares and Obsolescence Management
Boards designed in the late 1990s and 2000s around the A54SX08 in PLCC-84 continue in service across industrial, medical, and defense fleets. The A54SX08-PLG84 serves as the exact-form-fit-function spare for these repairs, and its same-footprint variants (A54SX08-PLG84I, -2PLG84, -2PLG84I) give buyers alternate temperature and speed grades when commercial grade is exhausted. Because antifuse programming is permanent and the design tools (Microchip Libero/Designer) still support the SX family, a spare device can be programmed from archived netlists years after the original build, keeping legacy systems fieldable without board redesign.
Recommended
Test and Measurement Equipment
Bench instruments, ATE fixtures, and interface adapters benefit from the A54SX08-PLG84's instant-on, one-time-programmed logic for timing generators, trigger logic, and pattern capture. The 240 MHz-class performance covers counter and timing-reference duties, while 69 I/O with 5V tolerance interfaces directly with legacy instrument buses and test points. Deterministic antifuse routing gives repeatable propagation delays fixture-to-fixture - valuable when test correlations depend on consistent timing. The PLCC-84 socket-compatible package even allows socketed programming and swap in bench prototypes, something BGA-based FPGAs cannot offer.
Recommended
Recommended Products Summary
Engineering reference data for A54SX08-PLG84 — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | A54SX08-PLG84I | A54SX08-2PLG84 | A54SX08-P2PLG84I | A54SX08-1PLG84I |
|---|---|---|---|---|---|
| Package | 84-PLCC (PLG84), 1.27 mm J-lead | 84-PLCC (PLG84) - same | 84-PLCC (PLG84) - same | PQCC84 (PLCC-84) - same footprint | 84-PLCC (PLG84) - same |
| Brand | Microsemi (Microchip Technology) | Microsemi (Microchip Technology) | Microsemi (Microchip Technology) | Microsemi (Microchip Technology) | Microsemi (Microchip Technology) |
| System Gates | 8,000 | 8,000 | 8,000 | 8,000 | 8,000 |
| Logic Cells | 512 | 512 | 512 | 512 | 512 |
| User I/O | 69 | 69 | 69 | 69 | 69 |
| Maximum Frequency | 240 MHz | 240 MHz | up to 320 MHz (-2 grade) | up to 320 MHz (-2 grade) | [DATA_NEEDED] |
| Temperature Grade | Commercial | Industrial (I) | Commercial | Industrial (I) | Industrial (I) |
| Programming Technology | Antifuse (OTP) | Antifuse (OTP) | Antifuse (OTP) | Antifuse (OTP) | Antifuse (OTP) |
| Supply Voltage | 3.3 V / 5 V | 3.3 V / 5 V | 3.3 V / 5 V | 3.3 V / 5 V | 3.3 V / 5 V |
Key Differentiators
- Standard commercial grade availability (vs A54SX08-PLG84I)
- Higher speed headroom at the same footprint (vs A54SX08-2PLG84)
- No configuration device required (vs SRAM FPGAs (functional alternatives only))
- Industrial temperature with identical footprint (vs A54SX08-2PLG84I)
Design Notes
The A54SX08-PLG84 is one-time programmable: after antifuse programming there is no reconfiguration path. Complete functional simulation, timing closure, and design-rule checks in the Microchip Designer (Libero SoC) flow before releasing the programming file to production. Keep archived programming (STAPL/FUSE) files together with your netlist and tool version records, since re-programming a mis-programmed part requires physically replacing the device on the board.
The 84-PLCC package uses a 1.27 mm J-lead pitch on a standard square land pattern; most CAD libraries' PLCC-84 footprints apply directly. Because PLCC parts can be socketed, decide early whether the board uses a socket (eases programming and field replacement but adds contact resistance and reliability risk in vibration) or direct SMD attachment (better electrical integrity). Decouple each VCC pin pair with 0.1 uF ceramics placed within a few millimeters of the package, plus bulk 10 uF near the supply entry.
The SX family operates with 3.3V core/5V-tolerant I/O configurations per the 54SX datasheet; confirm the exact supply scheme for your I/O bank before routing. Estimated: at 240 MHz with a large portion of the 512 cells toggling, dynamic current remains modest on the 0.35 um process, but verify with Designer's power estimator for your netlist rather than assuming. Ensure power-up monotonicity per datasheet requirements - antifuse FPGAs need no configuration device, but they do need clean, in-spec ramps at the pins.
Compliance Information
Compliance data was not present in the retrieved web data for this mature Microsemi part; consult the Microchip product page or certificate of conformity for RoHS/REACH status of your specific date code.
