A54SX16P-2TQG144 - 24K Gate SX FPGA, 113 I/O | Microsemi
MPN: A54SX16P-2TQG144 ✗ End of Life| 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 | $48.9 | $48,900.00 |
Drop-in alternatives for A54SX16P-2TQG144 — same package, pin-to-pin compatible. Different-package parts requiring PCB rework are excluded.
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A54SX16P-2TQG144I
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$26.1 / Unit
View Datasheet →A54SX16P-1TQG144M
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A54SX32-2TQG144
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View Datasheet →A54SX32-2TQG144I
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$45.6 / Unit
View Datasheet →A54SX32-TQG144
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$1387.71 / Unit
View Datasheet →A54SX08-1TQG144
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$31 / Unit
View Datasheet →A54SX32-TQG144I
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$32.3 / Unit
View Datasheet →A54SX16P-2TQG144 Maximum Ratings & Electrical Characteristics
| Family | SX (Actel/Microsemi SX Series) |
| System Gates | 24000 |
| Typical Gates | 16000 |
| Logic Cells | 924 |
| User I/O | 113 |
| Speed Grade | -2 |
| Maximum System Frequency | 320 MHz |
| Core Supply Voltage | 3 V to 3.6 V |
| I/O Supply Voltage | 4.75 V to 5.25 V |
| Process Technology | 0.35 um CMOS |
| Programming Technology | Antifuse (one-time programmable) |
| Package | 144-LQFP (TQFP), 20x20 mm |
| Mounting Type | Surface Mount |
| Supplier Device Package | 144-TQFP (20x20) |
A54SX16P-2TQG144 144-tqfp (20x20) Pin Configuration Guide
Complete pinout information for A54SX16P-2TQG144 (144-tqfp (20x20) 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 A54SX16P-2TQG144.
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
A54SX16P-2TQG144 is suitable for 6 applications: Industrial Control and Automation, 5V Legacy Bus Bridging, Telecommunications Line-Card Logic, Test and Measurement Instrumentation, Defense and High-Reliability Upgrades, Obsolescence-Driven Redesign.
Industrial Control and Automation
The A54SX16P-2TQG144 fits industrial control and factory automation designs that need deterministic, glueless integration of PLC I/O logic, encoders, and machine-state sequencers. Its 24,000 gates and 924 logic cells consolidate dozens of 74xx and PLD devices into one antifuse FPGA, while 113 user I/O directly interface 5V industrial sensors and actuators via the 4.75V-5.25V I/O rail. Because antifuse configuration is non-volatile and immune to configuration-bit upset, the FPGA is immediately active at power-up with no configuration device - valuable on factory floors with noisy power. Deterministic routing delays simplify meeting fixed-cycle timing budgets in motion-control state machines.
Recommended
5V Legacy Bus Bridging
Legacy backplanes, VME-style racks, and older test fixtures still run 5V TTL signaling that modern FPGAs cannot tolerate. The A54SX16P-2TQG144 addresses this directly: its I/O supply is specified at 4.75V to 5.25V, allowing the 113 user I/O to drive and receive full 5V logic levels without level shifters or series resistors. Designers typically map the FPGA between the legacy 5V bus and a modern 3.3V processor section, using the 24,000 gates for bus arbitration, byte-swap glue, and interrupt aggregation. The one-time-programmable nature also prevents accidental reconfiguration of deployed bridge hardware, an advantage over SRAM FPGAs in long-life fielded systems.
Recommended
Telecommunications Line-Card Logic
Telecom line cards in legacy CO equipment and transmission systems rely on fast, deterministic glue logic for framing, HDLC-lite aggregation, and backplane interfacing. The A54SX16P-2TQG144's SX architecture supports system speeds up to 320 MHz on a 0.35 um process, sufficient for high-speed counter chains and synchronous state machines, while the antifuse routing gives fixed delays that ease timing closure across board revisions. The dual 3.3V/5V supply matches the mixed-rail reality of telecom shelves: 3.3V core logic plus 5V-legacy backplane signaling. Its 113 user I/O in a compact 20x20 mm TQFP suits high-density card layouts where board area is constrained.
Recommended
Test and Measurement Instrumentation
Bench and rack instrumentation frequently needs custom timing generators, event counters, and protocol-aware trigger logic between front-end circuitry and a processor. The A54SX16P-2TQG144 suits these roles with its 320 MHz capability, deterministic antifuse delays, and 113 5V-tolerant I/O that connects directly to legacy instrumentation front ends. Its 24,000-gate capacity comfortably hosts multi-channel trigger state machines and prescaler chains. The non-volatile antifuse configuration means instruments power into a known operational state with zero boot latency - important for instruments that must begin capturing immediately at power-on. Same-footprint SX32 parts provide an upgrade path when instrument features grow.
Recommended
Defense and High-Reliability Upgrades
For defense-adjacent and high-reliability programs maintaining fielded hardware, the A54SX16P-2TQG144 and its M-grade sibling A54SX16P-1TQG144M extend the SX antifuse architecture into environments where configuration-upset immunity and readback security are mandatory. Antifuse devices hold their configuration through radiation-induced and power-cycling events that can corrupt SRAM configuration memory, and there is no bitstream to read back or intercept. The 144-TQFP (20x20 mm) package suits board upgrades of existing line-replaceable units, and the same-footprint family (SX08/SX16P/SX32) lets one PCB layout span multiple program variants with only a different programmed device installed.
Recommended
Obsolescence-Driven Redesign
When EOL gate arrays, PLDs, or multi-chip TTL logic must be consolidated onto a single available device, the A54SX16P-2TQG144 offers a practical landing zone: still stocked by distributors as of 2026-09-03, with same-package family members (A54SX16P-2TQG144I, A54SX32-2TQG144) providing second sources within one footprint. Its 5V I/O rail absorbs legacy-interface requirements without level translation, while 24,000 gates swallow typical random glue logic, bus arbiters, and decoders from obsolete boards. Designers should perform a last-time-buy assessment early, because the SX family is EOL and long-term supply beyond current distributor stock is broker-dependent.
Recommended
Recommended Products Summary
Engineering reference data for A54SX16P-2TQG144 — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | A54SX16P-2TQG144I | A54SX16P-1TQG144M | A54SX32-2TQG144 | A54SX08-1TQG144 |
|---|---|---|---|---|---|
| Brand | Microsemi | Microsemi | Microsemi | Microsemi | Microsemi |
| Package | 144-LQFP (TQFP, 20x20 mm) | 144-LQFP (TQFP, 20x20 mm) - same | 144-LQFP (TQFP, 20x20 mm) - same | 144-LQFP (TQFP, 20x20 mm) - same | 144-LQFP (TQFP, 20x20 mm) - same |
| System Gates | 24000 | 24000 | 24000 | ~32000 | ~8000 |
| Speed Grade | -2 | -2 | -1 (slower) | -2 | -1 (slower) |
| User I/O | 113 | 113 | 113 | [DATA_NEEDED] | [DATA_NEEDED] |
| Supply Voltage | 3V-3.6V core / 4.75V-5.25V I/O | 3V-3.6V / 4.75V-5.25V | 3V-3.6V / 4.75V-5.25V | 3V-3.6V / 4.75V-5.25V | [DATA_NEEDED] |
| Temperature Range | Commercial | Industrial | Military grade (M suffix) | Commercial | Commercial |
| Programming Technology | Antifuse (OTP) | Antifuse (OTP) | Antifuse (OTP) | Antifuse (OTP) | Antifuse (OTP) |
Key Differentiators
- Fastest commercial speed grade in the 144-TQFP SX16P family (vs A54SX16P-1TQG144M)
- Native 5V I/O operation without level shifters (vs Modern SRAM FPGAs (e.g., Microchip PolarFire/SmartFusion))
- Configuration-upset immunity via antifuse OTP (vs A54SX16P-2TQG144I (comparison within family))
Design Notes
The A54SX16P-2TQG144 requires two supply rails: 3V-3.6V for the core and 4.75V-5.25V for I/O. Sequence or decouple them independently - place 100 nF ceramic capacitors at each supply pin pair plus one bulk 10 uF per rail. In 5V bus designs, ensure the I/O rail never exceeds 5.25V including load transients, since the 0.35 um antifuse I/O structures have no modern overvoltage tolerance headroom. Estimated: at full logic toggle the SX16P core current is on the order of tens of milliamps; size the 3.3V regulator accordingly rather than assuming amp-level loads.
The 144-pin TQFP (20x20 mm) has 0.5 mm pitch leads requiring a well-defined solder stencil; use a 1:1 or slightly reduced aperture with paste at all 144 lands. Provide an exposed copper flood under the package center tied to ground for thermal relief and return paths. Route 5V-tolerant I/O traces with at least 0.2 mm clearance to adjacent 3.3V-domain signals. Keep unused I/O configured as inputs with pull resistors or drive them low in the design to avoid floating inputs on this OTP device - once programmed, I/O behavior is permanently fixed.
The most common SX-family pitfall is treating it like an SRAM FPGA: the antifuse device is one-time programmable, so any logic fix in production requires new physical parts and a reprogramming cycle. Freeze the netlist before ordering programmed production units and budget spares. Second pitfall: configuration programming requires specific programming voltage and socket procedures per the manufacturer programming tools - do not assume JTAG in-system programming. Third: verify the -2 speed grade timing at your operating temperature if moving to the I-grade variant, since derating applies across temperature grades.
Compliance Information
Compliance status for this EOL Microsemi SX FPGA was not stated in the retrieved web data; verify with Microchip product compliance documentation.
