A54SX16-VQG100I - 24K-Gate SX FPGA, 81 I/O, TQFP-100 | Microsemi
MPN: A54SX16-VQG100I ✗ 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-VQG100I — same package, pin-to-pin compatible. Different-package parts requiring PCB rework are excluded.
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A54SX16-VQG100
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View Datasheet →A54SX16-VQ100
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View Datasheet →A54SX16-2VQ100
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View Datasheet →A54SX16P-VQG100I
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View Datasheet →A54SX16P-1VQG100I
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View Datasheet →A54SX16P-VQG100M
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View Datasheet →A54SX16-VQG100I Maximum Ratings & Electrical Characteristics
| Programmable Logic Type | Antifuse FPGA (SX family) |
| System Gates | 24000 gates |
| Logic Cells | 924 cells |
| Logic Array Blocks | 1452 LABs |
| Number of I/O | 81 |
| Maximum Toggle Rate | 240 MHz |
| Process Technology | 0.35 um CMOS |
| Supply Voltage (Core) | 3 V to 3.6 V |
| Supply Voltage (I/O) | 4.75 V to 5.25 V |
| Operating Temperature | Industrial (-40C to +85C) |
| Package / Case | 100-TQFP (100-VQFP) |
| Supplier Device Package | 100-VQFP (14x14 mm) |
| Mounting Type | Surface Mount |
| Packaging | Tray |
| Programmability | One-time programmable (antifuse) |
A54SX16-VQG100I 100-vqfp (14x14 mm) Pin Configuration Guide
Complete pinout information for A54SX16-VQG100I (100-vqfp (14x14 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-VQG100I.
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-VQG100I is suitable for 6 applications: Industrial Automation Glue Logic, Defense and Aerospace Control Logic, Telecommunications Line Cards, Legacy Design Obsolescence Management, Test and Measurement Fixtures, Medical Device Control Electronics.
Industrial Automation Glue Logic
The A54SX16-VQG100I consolidates address decoding, bus interfacing, and control-sequencing functions that previously required multiple 74-series devices, fitting the 24,000-gate capacity and 81 I/O pins of the SX16 die. Its dual-rail architecture accepts a 5V industrial I/O domain (4.75V-5.25V) alongside a 3.3V core (3V-3.6V), so PLC backplanes and legacy sensor buses can be interfaced directly without level translators. Because the antifuse fabric is one-time programmable and instant-on, the FPGA is active within microseconds of power-up - important in machinery where FPGA configuration time would otherwise stall startup. Industrial designs also benefit from the -40C to +85C industrial grade of the VQG100I suffix. Designers should verify worst-case timing at 240 MHz-class clocks only where needed, since slower decode paths relax timing closure substantially.
Recommended
Defense and Aerospace Control Logic
Antifuse FPGAs such as the A54SX16-VQG100I are a long-standing choice in defense subsystems because the one-time-programmable interconnect is inherently resistant to configuration upset, unlike SRAM FPGAs that can lose state under radiation or power disturbances. The industrial -40C to +85C rating and 5V-tolerant I/O suit legacy MIL-standard bus voltages, and the 100-pin VQFP (14x14 mm) package simplifies board rework and second-source assembly. With 24,000 gates and 924 cells, the device handles radar interface control, telemetry formatting, and power-sequencing state machines. For designs requiring the highest reliability screening, the same-die A54SX16P-VQG100M military-grade variant provides a drop-in path within the same footprint. Timing analysis at the 240 MHz maximum toggle rate should be limited to critical paths; most control logic runs far slower.
Recommended
Telecommunications Line Cards
In telecom line-card designs, the A54SX16-VQG100I performs framing, error detection, and backplane handshaking between the line interface and the system controller. The SX family's deterministic antifuse routing supports predictable latency - valuable for synchronous links - and the 240 MHz toggle capability covers T1/E1-class and PDH-adjacent clocking domains with margin. The 3.3V core minimizes power on densely populated cards, while the 5V-tolerant I/O bank (4.75V-5.25V rail) interfaces to legacy backplane signals without external translators. Because these cards often run in uncooled or fan-limited shelves, the low static power of antifuse fabric (no configuration memory or standby reconfiguration current) reduces thermal budget pressure. Re-verify the compiled timing for each design revision since one-time-programmable devices cannot be re-flashed in the field.
Recommended
Legacy Design Obsolescence Management
Many fielded boards were designed around the SX16 die, and maintaining them requires a stocked supply of pin-compatible silicon. The A54SX16-VQG100I and its same-footprint siblings (A54SX16-VQG100, A54SX16-VQ100, A54SX16P-VQG100I) let sustainment engineers preserve the existing 100-pin VQFP land pattern and the original programming file, avoiding a board respin. Since the SX family is one-time programmable, the original design bitstream maps directly to same-die variants with no RTL changes. Cross-reference data flags counterfeit risk for this family on the open market, so sourcing through warrantied channels matters. Engineers should also qualify the SX16P variant as a second source: it uses the same pinout and package, giving dual sourcing within a single footprint for end-of-life programs.
Recommended
Test and Measurement Fixtures
Bench and production test fixtures frequently need custom control logic - stimulus generation, comparator steering, and relay sequencing - where a small instant-on FPGA is ideal. The A54SX16-VQG100I's antifuse fabric powers up configured, so test sequences start immediately at fixture power-on without a boot loader or configuration controller. The 81 user I/O pins, split across a 3.3V core domain and a 5V-tolerant I/O domain, allow direct connection to both modern 3.3V instruments and legacy 5V TTL electronics under test. The 240 MHz toggle ceiling comfortably covers pattern generation at tens of megahertz. Because fixtures are programmed once and deployed, the one-time-programmable nature of the SX family aligns naturally with fixture lifecycles; keep a supply of programmed spares since the logic cannot be updated in the field.
Recommended
Medical Device Control Electronics
Benchtop medical instruments - analyzers, pumps, and diagnostic controllers - use the A54SX16-VQG100I for deterministic, fixed-function control logic that must behave identically on every power cycle, a property the one-time-programmable antifuse fabric guarantees. Instant-on configuration means actuators and safety interlocks are supervised from the first milliseconds of operation, avoiding a window of undefined behavior that SRAM FPGAs exhibit during configuration loading. The industrial -40C to +85C rating and dual-rail design (3V-3.6V core, 4.75V-5.25V I/O) allow direct interfacing with legacy 5V peripheral ICs found throughout medical platforms. With 24,000 gates and 81 I/O, the device integrates motor sequencing, front-panel logic, and sensor multiplexing in one chip, reducing component count and documentation burden for regulatory submissions.
Recommended
Recommended Products Summary
Engineering reference data for A54SX16-VQG100I — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | A54SX16-VQG100 | A54SX16-VQ100 | A54SX16-2VQ100 | A54SX16P-VQG100I |
|---|---|---|---|---|---|
| Package | 100-TQFP (14x14 mm VQFP) | 100-TQFP (14x14 mm) - same | 100-TQFP (14x14 mm) - same | 100-TQFP (14x14 mm) - same | 100-TQFP (14x14 mm) - same |
| Brand / Manufacturer | Microsemi (Microchip) | Microsemi (Microchip) | Microsemi (Microchip) | Microsemi (Microchip) | Microsemi (Microchip) |
| System Gates | 24,000 | 24,000 | 24,000 | 24,000 | 24,000 (SX16P with added registers) |
| User I/O | 81 | 81 | 81 | 81 | 81 |
| 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] |
| Operating Temperature | Industrial (-40C to +85C) | Commercial (0C to +70C) | Commercial | Commercial | Industrial (-40C to +85C) |
| Speed Grade | Base | Base | Base | -2 (faster) | Base (P family) |
| Lifecycle Status | Obsolete (broker stock) | Obsolete (broker stock) | Obsolete (broker stock) | Obsolete (broker stock) | Limited supply |
Key Differentiators
- Industrial temperature grade with 5V-tolerant I/O (vs A54SX16-VQG100)
- Higher effective logic density via SX16P fabric (vs A54SX16P-VQG100I)
- Faster timing closure margin (vs A54SX16-2VQ100)
Design Notes
The SX family is one-time programmable (antifuse). A design change after programming cannot be recovered - the device must be discarded and a new one programmed. Complete functional simulation, timing analysis with the correct speed-grade model, and design review BEFORE committing production devices. Order extra units to cover rework. This is the single most important difference from SRAM FPGAs and the most common source of schedule loss for engineers new to Actel/Microsemi antifuse parts.
The device requires two supply rails: 3V-3.6V for the core and 4.75V-5.25V for the 5V-tolerant I/O bank. Sequence both rails per the SX family datasheet power-up requirements and decouple each rail with local 0.1 uF ceramics plus bulk capacitance at the package corners. Because antifuse fabric draws no configuration current, static power is low, but dynamic power scales with toggle rate - keep high-activity nodes short in floorplanning to limit di/dt on the 3.3V rail.
The 100-pin VQFP (14x14 mm) has 0.5 mm pitch leads; use solder-mask-defined pads with a 0.25 mm stencil and inspect with X-ray or AOI to catch bridging on the fine-pitch perimeter. Provide ground stitching vias near the package ring and a solid ground plane beneath the device to return high-speed switching currents. Avoid routing fast clocks under the package; the QFP leads make signal integrity manageable at 240 MHz-class edges, but stub length on the 81 user I/O should be minimized.
This part is obsolete; open-market sourcing carries elevated counterfeit risk (cross-reference data flags a 49% fake-threat level for this family). Buy only through warrantied distributors, verify date codes and marking against the Microsemi datasheet, and consider electrical screening of broker-stock parts. Qualifying the pin-compatible A54SX16P-VQG100I as a second source reduces dependence on scarce A54SX16 inventory.
Compliance Information
Compliance data was not stated in the verified source data. Legacy Actel-era parts frequently predate RoHS directives; verify lot-specific certificates of conformance or the Microchip environmental page before use in RoHS-mandated designs.
