A54SX16-2PQG208I - 24K Gate FPGA, 175 I/O | Microsemi SX
MPN: A54SX16-2PQG208I ✓ Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $68.5 | $68.50 |
| 10 | $63.2 | $632.00 |
| 100 | $57.8 | $5,780.00 |
| 500 | $52.4 | $26,200.00 |
| 1,000 | $47.95 | $47,950.00 |
Drop-in alternatives for A54SX16-2PQG208I — same package, pin-to-pin compatible. Different-package parts requiring PCB rework are excluded.
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A54SX16-2PQG208
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View Datasheet →A54SX16A-2PQG208I
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A54SX16P-2PQG208I
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$38.5 / Unit
View Datasheet →A54SX16P-2PQG208
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$49.2 / Unit
View Datasheet →A54SX16-PQG208
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View Datasheet →A54SX16-2PQG208I Maximum Ratings & Electrical Characteristics
| Family | Actel SX (54SX) |
| System Gates | 24000 gates |
| Logic Modules (Cells) | 1452 |
| Programmable I/O | 175 |
| Supply Voltage (VCCI) | 3 V to 3.6 V |
| Supply Voltage (VCI / 5V option) | 4.75 V to 5.25 V |
| Maximum Toggle Frequency | 320 MHz |
| Process Technology | 0.35 um CMOS |
| Programming Technology | Antifuse (one-time programmable) |
| Architecture | Sea-of-modules |
| Speed Grade | -2 |
| Operating Temperature | -40C to +85C |
| Package | 208-BFQFP (28x28 mm) |
| Mounting Type | Surface Mount |
| Series | SX |
| RoHS Status | unknown |
A54SX16-2PQG208I 208-bfqfp (28x28 mm) Pin Configuration Guide
Complete pinout information for A54SX16-2PQG208I (208-bfqfp (28x28 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 A54SX16-2PQG208I.
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
A54SX16-2PQG208I is suitable for 6 applications: Industrial Control and Automation, Telecommunications Line Cards, Military and Aerospace Legacy Upgrades, Test and Measurement Instrumentation, 5V to 3.3V System Bridging, Secure Embedded Controllers.
Industrial Control and Automation
The A54SX16-2PQG208I fits industrial PLC backplanes and motion-control cards because its -40C to +85C industrial rating, 24,000 antifuse gates, and 175 I/O consolidate address decoding, motor PWM state machines, and bus arbitration that would otherwise occupy dozens of TTL devices. Its dual 3.3V/5V supply support bridges legacy 5V industrial I/O with 3.3V controllers directly. Because the antifuse fabric configures instantly at power-up with no external boot flash, equipment starts deterministically - important in factory lines where a missing configuration device would stall a reset cycle. Designers typically place it between a backplane connector and a local microcontroller, assigning 5V-tolerant banks to field signals. The one-time-programmable nature also prevents unauthorized bitstream extraction on the factory floor.
Recommended
Telecommunications Line Cards
Telecom line cards in legacy T1/E1 and framing equipment benefit from the A54SX16-2PQG208I's up-to-320 MHz toggle rate and deterministic antifuse routing, which delivers low, predictable clock jitter for framing counters and synchronization state machines. The 208-pin BFQFP with 175 I/O provides enough pins to fan out to multiple line interfaces, status LEDs, and backplane signals on a single device, reducing board spin count. The 3.0-3.6V core supply integrates cleanly with 3.3V telecom rails, while the 4.75-5.25V I/O range supports legacy -48V-card monitoring logic. Because the device is one-time programmable and cannot be read back, carrier-grade designs gain configuration security against cloning - a frequent requirement in deployed network hardware.
Recommended
Military and Aerospace Legacy Upgrades
The A54SX16-2PQG208I is widely used to replace discontinued TTL/PLD clusters in military and aerospace LRU upgrades. Antifuse OTP configuration is inherently immune to configuration readback and SEE-induced configuration upset compared with SRAM FPGAs, and the industrial -40C to +85C rating covers many airborne and ground platforms without commercial-grade risk. The 24,000-gate sea-of-modules fabric with dedicated carry logic implements address decoders, bus interfaces (MIL-STD-1553 companion glue), and sequencers at deterministic speeds. Its 0.35 um process avoids the radiation and reliability uncertainties of aggressively scaled nodes for moderate-density upgrades. Designers recompile legacy SX netlists in Actel/Microsemi Libero tooling, making the A54SX16 a low-risk life-extension vehicle for long-service platforms.
Recommended
Test and Measurement Instrumentation
Bench and automated test instruments use the A54SX16-2PQG208I as a deterministic timing and trigger engine. Its 320 MHz toggle capability and fine-grained C-cell/S-cell array implement precision trigger comparators, counters, and handshake logic with sub-nanosecond-scale, fabrication-fixed routing delays - an advantage over SRAM FPGAs whose routing jitter varies between builds. The 175 I/O pins drive front-panel indicators, relay banks, and GPIB-style parallel buses, while the industrial temperature rating suits rack-mounted equipment in unconditioned environments. Dual 3.3V/5V rails let the FPGA speak directly to legacy 5V instrument subsystems such as ADC parallel buses and display drivers. Instant-on antifuse configuration means the instrument is measurement-ready within microseconds of power application.
Recommended
5V to 3.3V System Bridging
Many brownfield designs must connect modern 3.3V processors to legacy 5V backplanes, and the A54SX16-2PQG208I addresses exactly this with its verified dual supply operation of 3.0-3.6V and 4.75-5.25V. The FPGA is split into banks: 5V-tolerant I/O faces the legacy bus while 3.3V banks interface the host processor, eliminating external level-shift ICs and their propagation delay. The 24,000-gate fabric simultaneously performs byte-wide bus translation, handshake generation, and byte-swap functions that would otherwise need multiple bus transceiver devices. Because configuration is antifuse-based, the bridge logic loads instantly at power-up - critical when the host processor expects the bus to be ready within its boot window. This consolidation typically cuts BOM line items significantly.
Recommended
Secure Embedded Controllers
Applications protecting proprietary algorithms - payment terminals, access-control readers, licensed industrial equipment - use the A54SX16-2PQG208I because antifuse configuration physically cannot be dumped. Unlike SRAM FPGAs that expose their bitstream over configuration interfaces, the SX device's programmed interconnect is a permanent, unobservable metal link, so design IP survives in the field. The 1,452 logic modules implement encryption-lite routines, challenge-response state machines, and lockout logic, while 175 I/O handle keypad, display, and sensor interfaces. The 0.35 um process is well characterized for long product lifetimes, and the industrial temperature range suits outdoor access hardware. Instant power-up ensures security logic is active before any host microcontroller completes its own boot sequence, closing early-boot attack windows.
Recommended
Recommended Products Summary
Engineering reference data for A54SX16-2PQG208I — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | A54SX16-2PQG208 | A54SX16A-2PQG208I | A54SX16P-2PQG208I | A54SX16-PQG208 |
|---|---|---|---|---|---|
| Package | 208-BFQFP (28x28 mm) | 208-BFQFP - same | 208-BFQFP - same | 208-PQFP (28x28) - same footprint | 208-BFQFP - same |
| Brand | Microsemi Corporation | Microsemi Corporation | Microchip Technology | Microsemi Corporation | Microsemi Corporation |
| System Gates | 24000 | 24000 | 24000 | 24000 (SX16A) | 24000 |
| Programmable I/O | 175 | 175 | [DATA_NEEDED] | [DATA_NEEDED] | [DATA_NEEDED] |
| Operating Temperature | -40C to +85C | 0C to +70C | -40C to +85C | -40C to +85C | [DATA_NEEDED] |
| Speed Grade | -2 | -2 | -2 | -2 | -1 (slower) |
| Supply Voltage | 3.0-3.6 V / 4.75-5.25 V | 3.0-3.6 V / 4.75-5.25 V | [DATA_NEEDED] | [DATA_NEEDED] | 3.0-3.6 V / 4.75-5.25 V |
| Programming Technology | Antifuse OTP | Antifuse OTP | Antifuse OTP | Antifuse OTP | Antifuse OTP |
Key Differentiators
- Industrial temperature rating at no density cost (vs A54SX16-2PQG208)
- Matched -2 speed grade within SX family (vs A54SX16-PQG208)
- Original SX process vs newer SX-A shrunk fabric (vs A54SX16A-2PQG208I)
Design Notes
The A54SX16-2PQG208I requires dual supplies: 3.0-3.6V and 4.75-5.25V per verified distributor data. Decouple each supply pin of the 208-BFQFP with 0.1 uF ceramic capacitors placed within 5 mm of the pin, plus bulk 10 uF per rail. Antifuse FPGAs draw low static current but exhibit simultaneous-switching I/O noise on 5V banks; use a solid ground return under the package. Estimated: with 175 I/O at moderate toggle, 5V-rail transients can exceed 100 mA steps - size the 5V regulator accordingly.
This is a one-time-programmable device: there is no in-system rework after programming. Complete functional simulation and static timing closure against the SX -2 speed files BEFORE submitting devices to programming. Ordering the wrong speed grade or temperature grade (e.g., commercial A54SX16-2PQG208 for an -40C application) cannot be fixed by reflashing. Always confirm date code and grade marking on receipt when sourcing this mature part from brokers.
The 208-BFQFP (28x28 mm, 0.5 mm pitch class) requires careful reflow profiling and a fine-pitch footprint matching the datasheet PQ208 land pattern. Route JTAG programming access to all four JTAG pins even in production, since antifuse programming and verification are performed through this interface. Maintain length-matched traces for parallel bus banks and provide ground stitching vias near 5V-tolerant I/O to control edge rates and EMI on legacy-bus signals.
At 24K-gate density on a 0.35 um process, the A54SX16 typically dissipates well under 1 W in glue-logic duty, and the exposed-pad-free BFQFP dissipates adequately through its 208 leads on a standard 2-layer board. Estimated: for designs driving many 5V I/O banks at high toggle rates, compute total dynamic power in the Actel power calculator and confirm junction temperature stays within the -40C to +85C ambient envelope plus allowable rise.
Compliance Information
Compliance data was not present in the verified web data for this mature Actel/Microsemi part. Verify RoHS/lead-free status per date code with the supplier, as early production may predate RoHS compliance.
