A54SX16-PQG208 - SX FPGA 16K Gates 175 I/O 208-QFP | Microsemi
MPN: A54SX16-PQG208 ✗ End of Life| 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 A54SX16-PQG208 — 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:
A54SX16P-PQG208I
✅ Drop-In ⚠️ 参数待验证✓ In Stock
$38.75 / Unit
View Datasheet →A54SX16P-1PQG208
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Contact for price
View Datasheet →A54SX16P-2PQG208
✅ Drop-In ⚠️ 参数待验证✓ In Stock
$49.2 / Unit
View Datasheet →A54SX16P-1PQG208I
✅ Drop-In ⚠️ 参数待验证✓ In Stock
Contact for price
View Datasheet →A54SX16P-2PQG208I
✅ Drop-In ⚠️ 参数待验证✓ In Stock
$38.5 / Unit
View Datasheet →A54SX16-PQG208 Maximum Ratings & Electrical Characteristics
| Series | SX |
| Number of Gates | 16000 (16K) |
| Number of Cells | 924 |
| Number of Logic Array Blocks (LABs) | 1452 |
| Number of I/O | 175 |
| Maximum Operating Frequency | 240 MHz |
| Process Technology | 0.35 um |
| Supply Voltage - Core | 3 V to 3.6 V |
| Supply Voltage - I/O | 4.75 V to 5.25 V |
| Programming Type | One-Time Programmable (antifuse) |
| Package / Case | 208-BFQFP |
| Supplier Device Package | 208-PQFP (28x28) |
| Mounting Type | Surface Mount |
| Architecture | Sea-of-modules FPGA |
| Product Type | Field Programmable Gate Array (FPGA) |
A54SX16-PQG208 208-pqfp (28x28) Pin Configuration Guide
Complete pinout information for A54SX16-PQG208 (208-pqfp (28x28) 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-PQG208.
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-PQG208 is suitable for 6 applications: Industrial Control and Automation, Communications and Networking Line Cards, Test and Measurement Instrumentation, Aerospace and Defense Subsystems, Legacy Bus Bridging and Glue Logic Consolidation, Video and Display Control Logic.
Industrial Control and Automation
The A54SX16-PQG208 fits industrial control cards that need many parallel I/O lines, deterministic state machines, and 5V-compatible signaling. Its 175 user I/O pins in a 208-BFQFP let a single device replace multiple PAL/GAL devices and bus transceivers on PLC backplanes and motor-control boards. The 5V (4.75V-5.25V) I/O rail connects directly to legacy industrial logic levels, while the 3.3V core keeps dynamic power low. Because the antifuse fabric is nonvolatile, the design powers up instantly without configuration controllers, which matters in factory equipment where power cycling is frequent. Place-and-route timing at up to 240 MHz comfortably covers encoder counting, interlock logic, and fieldbus glue functions.
Recommended
Communications and Networking Line Cards
In telecom and datacom line cards, the SX family's sea-of-modules architecture delivers the low-skew, register-heavy fabric needed for framing, multiplexing, and backplane interface logic. The A54SX16-PQG208's 240 MHz capability supports high-throughput parallel data paths, while 175 I/O handles wide parallel buses to PHYs, framers, and traffic managers. The dual-rail 3.3V/5V supply scheme eases integration into older 5V backplane environments without level shifters. Nonvolatile antifuse configuration eliminates boot PROMs on the card, reducing BOM count and improving uptime in carrier equipment where configuration glitches are unacceptable. Designers should budget I/O standards and power per the Microchip 54SX datasheet.
Recommended
Test and Measurement Instrumentation
Bench and automated test instruments use the A54SX16-PQG208 for timing generators, trigger logic, and bus interfacing between measurement front ends and processors. The 924-cell fabric with up to 240 MHz operation provides fine-grained control of timing-critical trigger chains, and the 175 I/O drive relay matrices, multiplexer banks, and status indicators. The one-time-programmable antifuse fabric gives deterministic timing with no configuration latency at power-up, so measurements can begin immediately. Its 28x28 mm PQFP fits standard instrument main-board footprints, and the 5V-tolerant I/O rail interfaces directly with legacy test fixtures and GPIB-era peripheral logic. Verify timing at your trigger clock rate using datasheet AC tables.
Recommended
Aerospace and Defense Subsystems
Actel antifuse FPGAs have long been favored in defense electronics because their configuration cannot be read back and survives radiation-heavy power events without external configuration storage. The A54SX16-PQG208 serves in command and telemetry boards, bus bridges (MIL-STD-1553 companion logic, ARINC interfaces), and signal-conditioning control in ground-based and airborne subsystems. The nonvolatile fabric removes single-point-of-failure boot PROMs, and the dual 3.3V/5V rails integrate with mixed-voltage military card designs. For flight and harsh environments, specify the industrial-temperature pin-compatible A54SX16P-PQG208I, and consult Microchip's SX family reliability reports for application fit. All design changes require new devices, so freeze requirements early.
Recommended
Legacy Bus Bridging and Glue Logic Consolidation
A classic use of the A54SX16 is consolidating dozens of TTL/CMOS glue devices - address decoders, wait-state generators, bus transceivers, and interrupt controllers - into one 16K-gate device. With 175 I/O and 5V-compatible I/O rails (4.75V-5.25V), it bridges older 5V microprocessor buses to 3.3V peripherals directly. The sea-of-modules fabric maps decoded-state logic efficiently with predictable pin-to-pin delays, simplifying timing closure compared with look-up-table architectures of the era. Because the part is one-time programmable, the consolidated design is tamper-resistant and cannot be altered in the field. Consolidation also reduces board area, assembly cost, and inventory of obsolete small-logic SKUs across the product lifecycle.
Recommended
Video and Display Control Logic
Display controllers and scan-conversion cards use the A54SX16-PQG208 to generate pixel clocks, shift register enables, and sync generators. The 240 MHz fabric capability covers pixel-rate parallel pipelines at standard video resolutions, and 175 I/O drive RGB/TTL data buses and control lines simultaneously. The low-skew clock network inherent to the SX sea-of-modules architecture helps keep wide data buses aligned at the display interface, reducing skew-margin engineering. The 3.3V core reduces power in always-on display equipment, while the 5V I/O rail drives legacy monitor and panel logic directly. Nonvolatile configuration means the display subsystem is ready the moment power is applied, with no boot sequence gap.
Recommended
Recommended Products Summary
Engineering reference data for A54SX16-PQG208 — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | A54SX16P-PQG208I | A54SX16P-1PQG208 | A54SX16P-2PQG208 | A54SX16P-2PQG208I |
|---|---|---|---|---|---|
| Package | 208-BFQFP (PQFP 28x28) | 208-BFQFP (PQFP 28x28) - same | 208-BFQFP (PQFP 28x28) - same | 208-BFQFP (PQFP 28x28) - same | 208-BFQFP (PQFP 28x28) - same |
| Brand | Microsemi (Actel, now Microchip Technology) | Microsemi (Actel) | Microsemi (Actel) | Microsemi (Actel) | Microsemi (Actel) |
| Gate Density | 16K gates / 924 cells | 16K-gate class (SX-A) | 16K-gate class (SX-A) | 16K-gate class (SX-A) | 16K-gate class (SX-A) |
| User I/O | 175 | 175 | 175 | 175 | 175 |
| Family / Speed Performance | SX, up to 240 MHz | SX-A (enhanced speed-cost ratio) | SX-A speed grade 1 | SX-A speed grade 2 (faster) | SX-A speed grade 2 (faster) |
| Supply Voltage | 3V-3.6V core, 4.75V-5.25V I/O | [DATA_NEEDED] | [DATA_NEEDED] | [DATA_NEEDED] | [DATA_NEEDED] |
| Temperature Range | [DATA_NEEDED: operating temperature range] | -40C to +85C (industrial, per Microchip USA) | [DATA_NEEDED] | [DATA_NEEDED] | -40C to +85C (industrial, per suffix I) |
| Programming | One-time programmable (antifuse) | One-time programmable (antifuse) | One-time programmable (antifuse) | One-time programmable (antifuse) | One-time programmable (antifuse) |
| Lifecycle | EOL (remaining distribution stock) | Mature SX-A, limited stock | Mature SX-A, limited stock | Mature SX-A, limited stock | Mature SX-A, limited stock |
Key Differentiators
- Original SX family sea-of-modules fabric (vs A54SX16P-2PQG208)
- Industrial temperature availability in same footprint (vs A54SX16P-PQG208I)
- Dual 3.3V/5V supply operation with 175 I/O (vs A54SX16P-1PQG208)
Design Notes
The A54SX16-PQG208 requires two independent rails: 3V-3.6V for the core and 4.75V-5.25V for I/O. Estimated: at 240 MHz with high toggle rates, core current can approach datasheet ICC maxima, so size the 3.3V regulator with margin and decouple each supply pin pair with 0.1 uF ceramics plus bulk capacitance at the board entry point. Follow the Microchip 54SX datasheet power-up guidance so both rails are valid within specified sequencing windows before user I/O toggle.
This is a one-time-programmable antifuse device: a design change means a new physical part. Tape out only after full simulation, static timing analysis, and hardware-software co-verification. Also note that speed-grade suffixes (e.g., A54SX16P-2PQG208 vs -1PQG208) carry different AC timing tables - substituting a slower speed grade into a layouted design can violate setup/hold at your clock rate even though the footprint is identical. Always re-run place-and-route and timing verification after any substitution.
The 208-BFQFP (28x28 mm) is a fine-pitch quad flat package; use a footprint generated from the package drawing in the Microchip 54SX datasheet (a54sx_ds.pdf), not third-party approximations. Solder-paste stencil apertures should be slightly reduced (about 90 percent) on fine-pitch QFP leads to prevent bridging. Provide thermal relief via ground pours under the package body, and keep high-speed clock routing short with series termination where line lengths exceed datasheet recommended stub limits.
Compliance Information
This is a mature Actel/Microsemi FPGA; provided web data does not state RoHS/REACH status. Original SX production predates lead-free conversion in some speed grades - verify plating with Microchip before ordering for RoHS-required builds.
