A54SX16-2PQG208 - 24K Gate SX FPGA 175 I/O | Microsemi
MPN： A54SX16-2PQG208 ✗ 停產A54SX16-2PQG208 概覽
An antifuse FPGA is a type of programmable logic device in which interconnects are permanently formed at programming time by dielectric breakdown of an antifuse element. Unlike SRAM-based FPGAs, antifuse devices are non-volatile and radiation-tolerant by nature, require no configuration PROM, and power up instantly. The device sits in the taxonomy: FPGA -> field programmable gate array -> programmable logic device -> digital IC.
Key features include the Actel sea-of-modules architecture, which delivers gate-array-like routability and deterministic timing, 0.35 um CMOS antifuse technology, and system-level performance up to roughly 320 MHz toggle rates as cited by distributor listings for this speed grade. Dual 3.3V/5V supply support eases integration into legacy 5V backplanes and mixed-voltage industrial systems, a capability largely absent from modern SRAM FPGAs.
Technically, the SX family uses C-cells for combinational logic and R-cells for sequential logic in a segmented routing fabric, giving designers predictable propagation delays without the configuration volatility of SRAM fabrics. The 175 programmable I/O pins support a broad range of standard drive levels, and the 208-pin QFP offers practical hand-inspection and rework characteristics compared with ball-grid alternatives.
Typical applications include industrial control and automation, 5V-legacy interface bridging, telecommunications line cards, military and avionic subsystems requiring non-volatile instant-on logic, and obsolescence redesign where a proven one-time-programmable FPGA is preferred.
Design consideration: antifuse FPGAs are one-time programmable; reserve design margin and verify pinout before programming, because a functional change requires a new device. Budget the 5.25V rail for the I/O bank and 3.3V for the core.
This page synthesizes distributor pricing context, drop-in alternatives within the SX family, design notes, and FAQ content not consolidated in the manufacturer datasheet.
直接替換替代品，適用於 A54SX16-2PQG208 — 相同封裝，腳位對腳位相容。需重新設計 PCB 的不同封裝零件不列入。
此系列的變體
與下列產品可直接替換的同系列型號： A54SX16-2PQG208 （相同外形與佔位） — 差異在於 Package, Family, System Gates, Process Technology, RoHS Status.
A54SX16P-2PQG208
✅ 直接替換聯絡詢價
查看資料表 →A54SX16-2PQG208I
✅ 直接替換聯絡詢價
查看資料表 →A54SX16P-PQG208
✅ 直接替換聯絡詢價
查看資料表 →A54SX16-1PQG208
✅ 直接替換聯絡詢價
查看資料表 →A54SX16P-1PQG208
✅ 直接替換聯絡詢價
查看資料表 →A54SX16-1PQG208I
✅ 直接替換 ⚠️ 規格未經驗證聯絡詢價
查看資料表 →A54SX16P-PQG208M
✅ 直接替換聯絡詢價
查看資料表 →A54SX16-2PQG208 最大額定值與電氣特性
| Manufacturer | Microsemi (Actel) |
| Family | SX (54SX) FPGA |
| System Gates | 24000 gates |
| Logic Cells | 1452 cells |
| Speed Grade | -2 |
| Programmable I/O | 175 I/O |
| Supply Voltage (Core) | 3 V to 3.6 V (3.3 V nominal) |
| Supply Voltage (I/O) | 4.75 V to 5.25 V |
| Process Technology | 0.35 um CMOS antifuse |
| Programming Type | One-time programmable (antifuse) |
| 封裝 | 208-BFQFP (PQFP 28x28 mm) |
| 安裝類型 | Surface Mount |
| 工作溫度 | 0 C to 70 C |
| Configuration | Non-volatile, instant-on (no boot PROM) |
A54SX16-2PQG208 208-bfqfp (pqfp 28x28 mm) 腳位配置指南
A54SX16-2PQG208（208-bfqfp (pqfp 28x28 mm) 封裝）的腳位配置。 此數位 IC 包含 GPIO、通訊介面（UART、SPI、I2C）與電源腳位。替代腳位功能與配置選項請參閱製造商資料表。對嵌入式系統設計與 PCB 佈局至關重要。
無詳細腳位定義資料： A54SX16-2PQG208.
請參閱 資料表 以查看完整腳位配置。
典型應用
A54SX16-2PQG208 適用於 6 應用s: Industrial Control and Automation, 5V-Legacy System Bridging and Redesign, Telecommunications Line Cards, Avionics and Defense Subsystems, Test and Measurement Equipment, Medical Device Control Logic.
Industrial Control and Automation
The A54SX16-2PQG208 fits industrial control and factory automation because its 4.75V-5.25V I/O ring interfaces directly with legacy 5V TTL PLC I/O, sensors, and backplane signals without level shifters, while the 3.0V-3.6V core rail keeps internal power low. With 24,000 gates and 1452 logic cells, it implements glue logic, state machines, counters, and address decoding that previously consumed dozens of TTL devices. Its antifuse, one-time-programmable fabric is non-volatile and instant-on, so machinery resets to a known functional state immediately after power interruption - a meaningful advantage over SRAM FPGAs that need configuration time and a boot PROM in noisy industrial power environments.
推薦
5V-Legacy System Bridging and Redesign
The A54SX16-2PQG208 is a natural fit for sustaining 5V-legacy equipment: many mid-1990s and 2000s systems expose 5V TTL signaling that modern single-rail FPGAs cannot tolerate directly. The SX16's dedicated 4.75V-5.25V I/O supply absorbs 5V drive levels natively, and the 208-BFQFP 28x28 mm package offers large 0.635 mm lead pitch for inspection and rework. In obsolescence redesigns, the instant-on antifuse fabric replaces multi-chip TTL glue logic one-for-one, and with 175 I/O there is ample pin capacity for bus interfaces. The RoHS A54SX16P-2PQG208 variant enables compliant new builds on the same proven footprint.
推薦
Telecommunications Line Cards
Telecom line cards built around 5V backplanes benefit directly from the A54SX16-2PQG208's dual-rail architecture: 5V I/O on the card edge and backplane interface, 3.3V core for the logic fabric. The -2 speed grade supports the timing-critical framing, TDM switching, and protocol handshaking functions historically implemented on SX devices, with distributor listings citing ~320 MHz-class family performance. The 175 programmable I/O cover E1/T1 framer, HDLC controller, and backplane bus connections simultaneously. Because the device is one-time programmable and non-volatile, line cards come up immediately after a shelf power cycle, meeting carrier availability expectations without configuration PROMs on the card.
推薦
Avionics and Defense Subsystems
Antifuse FPGAs have long been preferred in avionics and defense electronics because the programmed interconnect is physically permanent, giving inherent immunity to configuration upset and no need for radiation-considered configuration storage. The A54SX16-2PQG208 provides 24,000 gates of instant-on logic for sensor preprocessing, bus interfacing, and discrete I/O consolidation in these subsystems. For programs operating across extended temperatures, the A54SX16-2PQG208I industrial variant is pin-identical, allowing one PCB design across commercial and rugged builds. Note the base part is rated 0C to +70C; always select the I-suffix or higher-screened M-grade variants for environments outside commercial limits.
推薦
Test and Measurement Equipment
Bench and rack instrumentation uses the A54SX16-2PQG208 for trigger logic, timing generation, counter/timer functions, and bus interfacing (GPIB-style and custom parallel buses). The -2 speed grade provides the sub-nanosecond-class deterministic delays of the SX family's sea-of-modules routing, valuable in trigger path timing that general-purpose fabric handles poorly. Its 175 I/O support high-channel-count pattern generators and logic analyzers, and the 5V I/O ring matches the TTL probe and Pod hardware common in legacy test systems. The instant-on antifuse configuration means the instrument is measurement-ready the moment power stabilizes - no 100-500 ms FPGA load delay.
推薦
Medical Device Control Logic
Non-life-critical medical device control and interface logic - patient data acquisition gating, front-panel control, communication interfacing - is a good match for the A54SX16-2PQG208 where designs already standardize on 5V subsystem peripherals. The antifuse fabric's deterministic, fixed routing simplifies verification documentation because post-program timing never drifts with configuration reloads, an audit-friendly property. With 24,000 gates it consolidates former TTL and PLD logic, reducing BOM count and failure points. For medical builds, prefer the Pb-free A54SX16P-2PQG208 to satisfy RoHS directive 2011/65/EU expectations, and use the industrial-temperature I variant for equipment subject to cold-chain or sterilization-adjacent temperature excursions.
推薦
推薦產品摘要
工程參考資料，適用於 A54SX16-2PQG208 — 比較、設計指引及合規資訊。
選型指南
與替代品比較
| 參數 | 本產品 | A54SX16P-2PQG208 | A54SX16-2PQG208I | A54SX16-1PQG208 | A54SX16P-PQG208 |
|---|---|---|---|---|---|
| Package | 208-BFQFP (PQFP 28x28 mm) | 208-BFQFP (PQFP 28x28 mm) - same | 208-BFQFP (PQFP 28x28 mm) - same | 208-BFQFP (PQFP 28x28 mm) - same | 208-BFQFP (PQFP 28x28 mm) - same |
| Brand | Microsemi (Actel) | Microchip Technology | Microsemi | Microsemi | Microchip Technology |
| System Gates | 24,000 | 24,000 | 24,000 | 24,000 | 24,000 |
| Logic Cells | 1452 | 1452 | 1452 | 1452 | 1452 |
| Speed Grade | -2 (fastest standard grade) | -2 | -2 | -1 (slower) | -1 (slower) |
| Programmable I/O | 175 | 175 | 175 | 175 | 175 |
| Supply Voltage | 3.0-3.6 V core, 4.75-5.25 V I/O | 3.0-3.6 V core, 4.75-5.25 V I/O | 3.0-3.6 V core, 4.75-5.25 V I/O | 3.0-3.6 V core, 4.75-5.25 V I/O | 3.0-3.6 V core, 4.75-5.25 V I/O |
| Operating Temperature | 0 C to +70 C | 0 C to +70 C | Industrial (I suffix) | 0 C to +70 C | 0 C to +70 C |
| Lifecycle Status | EOL (residual distributor stock) | Active - ships today (DigiKey) | EOL / legacy stock | EOL / legacy stock | Legacy listing |
主要差異化特點
- Dual 3.3V/5V supply architecture (對比A54SX16P-2PQG208)
- Fastest standard speed grade in the SX16 208-pin family (對比A54SX16-1PQG208)
- Instant-on non-volatile antifuse configuration (對比SRAM FPGAs (no drop-in equivalent))
- Honest trade-off: no RoHS plating (對比A54SX16P-2PQG208)
設計說明
The A54SX16-2PQG208 requires two independent rails: 3.0-3.6V for the core and 4.75-5.25V for the I/O ring. Do not share a single regulator output between core and I/O domains without confirming sequencing per the 54SX family datasheet, because I/O structure integrity depends on the I/O rail. Provide 0.1 uF ceramic decoupling at multiple I/O corner pins plus at least 10 uF bulk per rail. Estimated: SX16 quiescent antifuse current is very low, but 5V I/O switching dominates dynamic power - budget P = C*V^2*f per output bank for the 5V rail sizing.
This is a one-time-programmable antifuse device: there is no rework path after programming. Freeze the pin assignment and design before committing devices, and always buy extra programmed spares (5-10% of lot size). Never substitute the A54SX16A (SX-A family, 0.25 um) for the A54SX16 (SX family, 0.35 um) - despite similar names and 208-pin PQFP packaging they are different families with different timing, pinout verification, and toolchain constraints, as Jotrin's parallel listings make clear.
The 208-pin PQFP (28x28 mm, 0.5 mm lead pitch for BFQFP class) needs careful solder-paste stencil design: use a 1:1 aperture with tensioned stencil and inspect for solder bridging between fine-pitch leads under magnification. Provide at least two thermal relief vias per ground plane connection under the die and route the 5V I/O return currents directly to the ground plane. Keep high-speed clock traces short and reference an unbroken ground plane; the QFP lead inductance limits edge rates, but stubs on clock nets still cause ringing.
Because this part is EOL, design the PCB footprint for the full SX16 208-PQG family (including the P Pb-free variants) so that A54SX16P-2PQG208 can be substituted without layout change. The QFP lead-tip footprint per the 54SX datasheet package drawing accommodates both package generations; verify the silkscreen polarity mark against pin 1 of the package drawing before release, and reserve a testpoint on each supply rail and the programming-related pins for incoming inspection.
合規資訊
The base A54SX16-2PQG208 is a legacy Pb-era package; the P-suffix variant A54SX16P-2PQG208 is the Pb-free/RoHS-oriented version per Microchip listings. Commercial temperature grade only (0C to +70C); not automotive qualified.
