A54SX16-2TQG176 - 16K-Gate Antifuse FPGA 176-TQFP | Microchip
MPN: A54SX16-2TQG176 ✓ Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $423.92 | $423.92 |
| 10 | $402.72 | $4,027.20 |
| 100 | $381.53 | $38,153.00 |
| 500 | $360.33 | $180,165.00 |
| 1,000 | $339.14 | $339,140.00 |
Drop-in alternatives for A54SX16-2TQG176 — 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:
A54SX16-2TQ176
✅ Drop-In📋 Reference alternative (not in catalog)
A54SX16-2TQG176I
✅ Drop-In✓ In Stock
$20.8 / Unit
View Datasheet →A54SX16P-TQG176
✅ Drop-In✓ In Stock
$47.2 / Unit
View Datasheet →A54SX16P-2TQG176
✅ Drop-In✓ In Stock
$44.2 / Unit
View Datasheet →A54SX16-2TQG176 Maximum Ratings & Electrical Characteristics
| Family | SX (Antifuse FPGA) |
| System Gates | 16000 |
| Logic Cells | 924 |
| User I/O | 147 |
| Maximum Frequency | 320 MHz |
| Process Technology | 0.35 um |
| Supply Voltage | 3.3 V / 5 V |
| Programming Technology | Antifuse (one-time programmable) |
| Speed Grade | -2 |
| Package | 176-Pin TQFP |
| Mounting Type | Surface Mount |
| Lead Finish | G (lead-free, matte tin) |
| Architecture | Sea-of-modules |
| Configuration Memory | Nonvolatile (no external configuration device required) |
| RoHS Status | Compliant (G suffix, lead-free) |
A54SX16-2TQG176 176-pin tqfp Pin Configuration Guide
Complete pinout information for A54SX16-2TQG176 (176-pin tqfp 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 A54SX16-2TQG176.
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
A54SX16-2TQG176 is suitable for 6 applications: Legacy System Sustenance, Industrial Control Glue Logic Integration, Design Security / IP Protection, Aerospace and Defense Sub-Systems, 5V-Tolerant Board-Level Interface Integration, Obsolescence Management / Last-Time-Buy Bridge.
Legacy System Sustenance
The A54SX16-2TQG176 is a mainstay for keeping older industrial and telecom boards in production. Its 147 user I/O and 3.3V/5V I/O compatibility let it directly replace failed programmable logic in designs originally built around 5V-era components, without PCB redesign. Because the antifuse fabric is nonvolatile, a replacement device boots instantly with no configuration PROM - critical when the original boot devices are also obsolete. In this role the 320 MHz capability far exceeds the modest timing demands of legacy glue logic, providing wide margin. The practical constraint is one-time programmability: the original design must be recompiled with available legacy tools and programmed on hardware such as the Silicon Sculptor before installation.
Recommended
Industrial Control Glue Logic Integration
In industrial controllers, the SX16 integrates address decoders, bus interfaces, state machines, and I/O expansion that would otherwise consume several discrete 5V TTL/CMOS devices. The sea-of-modules architecture gives predictable routing delays, simplifying timing closure for deterministic control sequencing. With 147 user I/O in a 176-TQFP, a single device can bridge a processor bus to field-level signals while meeting 3.3V/5V mixed-voltage requirements common on factory equipment. Instant power-up is valuable in machinery where the control logic must be active within milliseconds of supply application, with no configuration load time. Designers should budget for the one-time-programmable workflow by fully simulating the design before committing production parts.
Recommended
Design Security / IP Protection
Antifuse FPGAs like the A54SX16-2TQG176 are chosen where configuration readback attacks are a concern. Unlike SRAM FPGAs, the programmed interconnect is a permanent physical connection with no bitstream stored on or near the chip, so there is nothing to intercept during power-up and no configuration file to steal from the board. The 16K-gate capacity suits authentication blocks, encryption wrappers for small payloads, and proprietary control logic. The 320 MHz internal rate supports modest crypto datapaths at the 0.35um process scale. This makes the device relevant in defense-adjacent and anti-cloning industrial applications, provided the design workflow accommodates OTP programming and the legacy Microsemi toolchain.
Recommended
Aerospace and Defense Sub-Systems
The Microsemi SX family lineage has long served military and aerospace boards where instant-on operation, radiation-tolerant process heritage, and secure nonvolatile configuration matter. The A54SX16-2TQG176 fits ground-based defense electronics, test sets, and avionics support equipment that do not require full space qualification but benefit from antifuse reliability: no configuration upset from SEUs in a configuration memory because none exists. The 3.3V/5V I/O supports mixed-rail interfaces typical of long-lived defense platforms. The industrial-temperature A54SX16-2TQG176I variant extends the ambient range to -40C to +85C for environmentally demanding enclosures. Use the industrial suffix when the application environment exceeds commercial limits.
Recommended
5V-Tolerant Board-Level Interface Integration
The dual 3.3V/5V operating capability makes the A54SX16-2TQG176 a natural bridge between modern 3.3V logic and legacy 5V devices such as mature microcontrollers, ASICs, and bus transceivers still found on industrial and transportation equipment. Its 147 user I/O allow a single device to absorb level-mixed glue logic - bus buffers, multiplexers, and decoders - reducing board area and BOM count. Verified distributor data for the family confirms 5V I/O support with fast switching (700 ps class transitions on related listings). Designers must confirm per-pin 5V tolerance rules in the datasheet I/O section before direct connection, and the -2 speed grade provides generous timing margin for bus bridging.
Recommended
Obsolescence Management / Last-Time-Buy Bridge
Procurement teams use the A54SX16-2TQG176 to bridge end-of-life events on mature products. Verified distributor data showed substantial existing stock (5,152 pieces of the related A54SX16P-2TQG176 at one broker as of 2026-09-03) at a reference unit price of $423.92, giving programs time to plan a redesign. Alternatives strategy: the pin-compatible A54SX16P-2TQG176 extends supply, and for longer-term planning the flash-based ProASIC3 family (e.g., A3PE600-2FGG484) offers a reprogrammable, currently supported migration target at the cost of a footprint change. Reserve the SX16 for exact footprint-sustenance; move to ProASIC3 when a respin is acceptable.
Recommended
Recommended Products Summary
Engineering reference data for A54SX16-2TQG176 — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | A54SX16-2TQ176 | A54SX16-2TQG176I | A54SX16P-TQG176 | A54SX16P-2TQG176 |
|---|---|---|---|---|---|
| Package | 176-Pin TQFP | 176-Pin TQFP - same | 176-Pin TQFP - same | 176-Pin TQFP - same | 176-Pin TQFP - same |
| Brand | Microchip Technology (Microsemi) | Microchip Technology (Microsemi) | Microchip Technology (Microsemi) | Microchip Technology (Microsemi) | Microchip Technology (Microsemi) |
| System Gates | 16,000 | 16,000 | 16,000 | 16,000 class (SX-A) | 16,000 class (SX-A) |
| User I/O | 147 | 147 | 147 | 147 | 147 |
| Maximum Frequency | 320 MHz | 320 MHz | 320 MHz | 320 MHz class | 320 MHz |
| Supply Voltage | 3.3 V / 5 V | 3.3 V / 5 V | 3.3 V / 5 V | 3.3 V / 5 V | 3.3 V / 5 V |
| Speed Grade | -2 | -2 | -2 | standard | -2 |
| Lead Finish / RoHS | Lead-free (G suffix) | Original finish (non-G) | Lead-free (G suffix) | Lead-free (G suffix) | Lead-free (G suffix) |
| Reference Unit Price (qty 1) | $423.92 | [DATA_NEEDED] | [DATA_NEEDED] | [DATA_NEEDED] | $423.9231 |
Key Differentiators
- Instant-on, nonvolatile antifuse configuration (vs A3PE600-2FGG484)
- Lead-free G-suffix packaging (vs A54SX16-2TQ176)
- Wider temperature range option (vs A54SX16-2TQG176I)
- Lower-cost standard speed grade option (vs A54SX16P-2TQG176)
Design Notes
The A54SX16-2TQG176 is one-time programmable: once the antifuse links are blown, the device cannot be reprogrammed or erased. Always validate the design in simulation, and prototype on engineering devices before committing production parts. Keep your programming files (Fuse files) under revision control together with the Libero/Designer project, since regeneration years later may be impossible if tool versions change. Budget spare programmed devices for field service - a failed unit cannot be re-flashed, only replaced.
The device operates from 3.3V core/5V-tolerant I/O per verified data. Decouple each VDD pin with 0.1uF ceramic capacitors placed within a few millimeters of the pin, and add bulk 10uF capacitance near the package. Antifuse FPGAs draw essentially zero static configuration current, but dynamic current scales with clock frequency toward the 320 MHz ceiling - size the supply regulator for worst-case switching activity rather than nominal. Estimated: at moderate utilization (~50% of 924 cells) dynamic current typically remains well under 100 mA at industrial clock rates; confirm with Microchip Designer power estimation tools.
The 176-pin TQFP has 0.5 mm pin pitch with fine gull-wing leads - specify a No-Clean or water-wash soldering profile per JEDEC reflow guidance and inspect with 10x magnification or X-ray for bridging on the fine-pitch perimeter. Use a 0.12 mm stencil aperture reduction if paste bridging appears. The exposed lead frame requires no thermal pad, but the G-suffix matte-tin leads are compatible with both lead-free ( SAC305) and leaded processes. Ground returns: provide a solid ground plane and short returns for every GND pin to contain ground bounce at fast I/O edges.
Compliance Information
G suffix denotes lead-free matte-tin lead finish. REACH, halogen-free, and conflict-minerals statuses not stated in verified data - obtain certificates from Microchip.
