A54SX16P-TQG176 - SX FPGA 16K Gates TQFP-176 | Microchip
MPN: A54SX16P-TQG176 β Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $68.5 | $68.50 |
| 10 | $62.1 | $621.00 |
| 100 | $56.9 | $5,690.00 |
| 500 | $51.4 | $25,700.00 |
| 1,000 | $47.2 | $47,200.00 |
Drop-in alternatives for A54SX16P-TQG176 β same package, pin-to-pin compatible. Different-package parts requiring PCB rework are excluded.
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A54SX16P-2TQG176
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$44.2 / Unit
View Datasheet βA54SX16P-1TQG176
β Drop-Inπ Reference alternative (not in catalog)
A54SX16P-TQG176I
β Drop-Inπ Reference alternative (not in catalog)
A54SX16P-P2TQG176
β Drop-Inπ Reference alternative (not in catalog)
A54SX16P-P1TQG176
β Drop-Inπ Reference alternative (not in catalog)
A54SX16P-TQG176 Maximum Ratings & Electrical Characteristics
| Manufacturer Part Number | A54SX16P-TQG176 |
| Family | SX-A (SX Series) |
| System Gates | 16,000 (listed up to 24K system gates by Mouser) |
| Configurable Logic Blocks (CLBs) | 1452 |
| Number of I/Os | 147 |
| Maximum Clock Frequency | 240 MHz (standard grade); up to 320 MHz (P2 speed grade) |
| Supply Voltage | 3.3 V / 5 V |
| Core Supply Range (P variants) | 3.0 V to 3.6 V |
| Process Technology | 0.35 um CMOS |
| Architecture | Sea-of-modules FPGA |
| Package | 176-TQFP (S-PQFP-G176) |
| Pin Pitch | 0.5 mm |
| Mounting Style | SMD/SMT |
| Operating Temperature (commercial) | 0C to +70C |
| Operating Temperature (industrial, I suffix) | -40C to +85C |
| Packaging | Tray |
A54SX16P-TQG176 176-tqfp (s-pqfp-g176) Pin Configuration Guide
Complete pinout information for A54SX16P-TQG176 (176-tqfp (s-pqfp-g176) 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-TQG176.
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-TQG176 is suitable for 6 applications: Industrial Control Logic, Telecommunications Line Cards, Test and Measurement Equipment, Avionics and Defense Legacy Systems, Bus Interface and Glueless Interfacing, Embedded System Prototyping and NPI.
Industrial Control Logic
The A54SX16P-TQG176 fits industrial control applications because its 1452 CLBs and 147 user I/Os absorb state machines, sequencers, and glue logic that would otherwise occupy dozens of 74-series devices, while the sea-of-modules architecture keeps propagation delays predictable for deterministic control timing. Its 3.3V/5V supply compatibility allows direct interfacing with legacy 5V TTL sensors, PLC backplanes, and relay-driver circuits common on factory floors. Implemented between sensor banks and actuator drivers with the 176-TQFP's 0.5 mm pitch enabling reliable reflow assembly, the device consolidates board area and reduces power versus discrete TTL implementations. For wide-temperature cabinets, pair with the -I industrial variant (-40C to +85C).
Recommended
Telecommunications Line Cards
Telecom line cards benefit from the A54SX16P-TQG176's predictable, deterministic timing: the SX-A routing architecture gives consistent propagation delays (sub-ns class, with Hotenda listing 700 ps class performance), simplifying setup/hold closure for framing, multiplexing, and TDM glue logic at line rates within the 240 MHz standard-grade ceiling. The 147 I/Os handle E1/T1 framers, serial links, and backplane interfaces, and 3.3V/5V operation bridges newer 3.3V silicon to legacy 5V line-card rails. Deployed between physical-layer transceivers and backplane connectors, the FPGA absorbs bus-width conversions and protocol adapters without external PAL/GAL devices, cutting BOM count and board rework cycles on mature platform designs.
Recommended
Test and Measurement Equipment
In test and measurement instruments, the A54SX16P-TQG176 implements counters, trigger state machines, and pattern generators where the deterministic SX-A fabric outperforms microprocessor-driven approaches for tight event timing. With 1452 CLBs and up to 240 MHz standard-grade clock capability (320 MHz on the -2 speed grade), designs achieve sub-10 ns event resolution in counter/timer front ends. The 147 I/Os directly drive probe multiplexers, range-switching relays, and display interfaces, while 3.3V/5V dual-rail operation simplifies integration into benchtop instruments that retain 5V logic domains. Using the 176-TQFP keeps the part hand-inspectable during instrument service and calibration, an operational advantage for long-support-lifetime laboratory equipment.
Recommended
Avionics and Defense Legacy Systems
The Actel-heritage SX-A family has a long qualification history in avionics and defense platforms, and the A54SX16P-TQG176 serves as a sustaining or re-qualification choice for programs designed around the SX architecture. The mature 0.35 um CMOS process offers well-characterized behavior, and the related RTAX radiation-tolerant family shares architectural lineage, easing design reuse between commercial prototypes and space/defense derivatives. In these systems the FPGA typically implements MIL-STD-1553 glue logic, discrete-to-digital interfaces, and redundant-lane switching. The 176-TQFP ceramic-compatible flow and stable, long-lived supply position through Microchip USA and authorized distributors support programs with multi-decade support requirements and strict configuration control of firmware and silicon revisions.
Recommended
Bus Interface and Glueless Interfacing
For bus interfacing, the A54SX16P-TQG176 directly accepts 5V TTL and 3.3V LVTTL signals thanks to its dual 3.3V/5V supply support, eliminating level-shift devices when bridging PCI-era, VME, ISA, or custom backplane buses to modern 3.3V controllers. The 147 I/Os provide enough pins to implement full-width 32-bit buses with control strobes and parity, and the 1452 CLBs implement bus arbitration, byte-lane swapping, and wait-state generation with deterministic single-cycle latency. Placed between a legacy backplane connector and a modern processor or memory subsystem, the FPGA replaces dozens of glue-logic packages, cutting board area and improving signal quality through shorter internal routing. Verify per-bank voltage assignment in Libero before routing mixed-voltage nets.
Recommended
Embedded System Prototyping and NPI
During new product introduction, the A54SX16P-TQG176 serves as a low-risk prototyping fabric for ASIC-to-be logic or for validating control algorithms in hardware before committing to mask ROM or custom silicon. The sea-of-modules architecture gives predictable timing from the first build, reducing place-and-route iteration risk, and the standard 176-TQFP package mounts on inexpensive 4-layer prototype boards without via-in-pad or heatsink complexity. With 16K-24K system gates, it accommodates microprocessor peripherals, interrupt controllers, and interface bridges typical of embedded platforms. Because the family remains orderable at DigiKey and Mouser as of 2026-09-03, prototypes can be respun without the allocation risk seen on newer FPGAs, supporting stable development schedules.
Recommended
Recommended Products Summary
Engineering reference data for A54SX16P-TQG176 β comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | A54SX16P-2TQG176 | A54SX16P-1TQG176 | A54SX16P-TQG176I | A54SX16P-P2TQG176 | A54SX16P-P1TQG176 |
|---|---|---|---|---|---|---|
| Package | 176-TQFP | 176-TQFP - same | 176-TQFP - same | 176-TQFP - same | 176-TQFP - same | 176-TQFP - same |
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| System Gates | 16K (24K per Mouser) | 16K | 16K | 16K | 16K | 16K |
| Maximum Clock Frequency | 240 MHz (std grade) | 320 MHz | 280 MHz | 240 MHz class | 320 MHz | 280 MHz |
| CLBs / Logic Cells | 1452 | 1452 | 1452 | 1452 | 1452 | 1452 |
| User I/Os | 147 | 147 | 147 | 147 | 147 | 147 |
| Operating Temperature | 0C to +70C | 0C to +70C | 0C to +70C | -40C to +85C | [DATA_NEEDED] | [DATA_NEEDED] |
| Supply Voltage | 3.3 V / 5 V | 3.3 V / 5 V | 3.3 V / 5 V | 3.3 V / 5 V | 3.0 V to 3.6 V (P grade) | 3.0 V to 3.6 V (P grade) |
Key Differentiators
- Fastest speed grade in family available as same-footprint upgrade (vs A54SX16P-2TQG176)
- Industrial temperature option in same package (vs A54SX16P-TQG176I)
- Lower-cost standard grade for non-timing-critical builds (vs A54SX16P-P2TQG176)
- Honest limitation: no cross-brand second source (vs A54SX16P-P1TQG176)
Design Notes
Budget power using Microchip's SX-A power calculator before layout: dissipation scales with toggle rate and I/O loading, and the 176-TQFP theta_JA is dominated by the PCB copper pour under the die-attach region. Estimated: with 3.3V core and moderate 25% utilization, expect tens-to-low-hundreds of mW; verify against the datasheet power spreadsheet for your netlist. Provide at least 2 oz copper on the top layer under the package for heat spreading when operating near +70C ambient in commercial variants.
The 176-TQFP has a 0.5 mm pin pitch; use NSMD (non-solder-mask-defined) pads with approximately 0.25 mm pad diameter and a 1:1 or slightly-tapered stencil aperture to avoid solder bridging on the fine-pitch perimeter. Add thermal relief vias to ground planes adjacent to the VCC/GND pin pairs and place 0.1 uF ceramic decoupling capacitors at all four package sides - at minimum 8-12 capacitors distributed around the perimeter plus bulk 10 uF near each supply entry point.
When mixing 5V and 3.3V I/O on this dual-rail-capable FPGA, group same-voltage signals on contiguous banks and keep 5V TTL traces short to limit undershoot below ground; series-terminate 22-33 ohm on long backplane stubs. The SX-A output edges are fast relative to legacy TTL, so ringing on unterminated 20 cm+ traces can violate input thresholds - a series resistor at each driver on bus lines is cheap insurance for first-pass success.
Do not assume speed-grade interchangeability closes timing automatically: replacing a -2 (320 MHz) design build with the standard 240 MHz A54SX16P-TQG176 requires a full static timing re-run in the Designer/Libero toolchain. Also confirm the supply-voltage class: P-grade variants (P1/P2) specify a 3.0V-3.6V range while standard SX-A parts support 3.3V/5V operation - substituting across process grades without checking rails can stress I/O structures.
Compliance Information
RoHS/REACH/lead-free status not stated in the verified distributor data retrieved for this part. Confirm environmental compliance via the Microchip product page or a distributor certificate of conformance.
