A54SX32-2TQG176I - 48K Gate SX-A FPGA 176-TQFP | Microsemi
MPN: A54SX32-2TQG176I ✓ Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $78.5 | $78.50 |
| 10 | $71.2 | $712.00 |
| 100 | $64.9 | $6,490.00 |
| 500 | $59.4 | $29,700.00 |
| 1,000 | $55.1 | $55,100.00 |
Drop-in alternatives for A54SX32-2TQG176I — same package, pin-to-pin compatible. Different-package parts requiring PCB rework are excluded.
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A54SX32A-2TQG176I
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A54SX32-1TQG176I
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$45.2 / Unit
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$86.75 / Unit
View Datasheet →A54SX32-2TQG176
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View Datasheet →A54SX32-2TQ176I
✅ Drop-In📋 Reference alternative (not in catalog)
A54SX32-2TQG176I Maximum Ratings & Electrical Characteristics
| System Gates | 48,000 |
| Logic Cells | 1,800 |
| User I/O | 147 |
| Maximum Frequency | 320 MHz |
| Technology | 0.35 um antifuse |
| Speed Grade | -2 |
| Supply Voltage (Core/I-O rail 1) | 3 V to 3.6 V |
| Supply Voltage (rail 2) | 4.75 V to 5.25 V |
| Programmability Type | One-Time Programmable (antifuse) |
| Family | SX |
| Package / Case | 176-LQFP (TQFP, 24x24 mm) |
| Supplier Device Package | 176-TQFP (24x24) |
| Mounting Type | Surface Mount |
| Operating Temperature | -40C to +85C (industrial, I suffix) |
| RoHS Status | RoHS Compliant |
| Lead Free Status | Lead Free |
A54SX32-2TQG176I 176-tqfp (24x24) Pin Configuration Guide
Complete pinout information for A54SX32-2TQG176I (176-tqfp (24x24) 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 A54SX32-2TQG176I.
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
A54SX32-2TQG176I is suitable for 6 applications: Industrial Automation and Control, Military and Avionics Subsystems, Communications and Networking Line Cards, Medical Instrumentation, Test and Measurement Equipment, Secure Embedded Systems.
Industrial Automation and Control
The A54SX32-2TQG176I suits industrial controllers and PLC I/O subsystems because its 48,000 gates and 147 user I/Os consolidate discrete glue logic, bus interfacing, and interlock logic into one deterministic antifuse device. The industrial -40C to +85C rating of the I suffix tolerates uncontrolled factory-floor and cabinet environments, while the dual 3.3V/5V supply rails (3V-3.6V and 4.75V-5.25V) allow direct interfacing with legacy 5V sensors and 3.3V microcontroller buses. Because the antifuse configuration is non-volatile, the controller is fully operational the instant power is applied, with no configuration loader to fail after power brownouts. Place the FPGA between field bus transceivers and the host CPU, implementing handshake, address decoding, and fault-latching at the fabric's up-to-320 MHz timing capability, with timing deterministic across lot-to-lot variation.
Recommended
Military and Avionics Subsystems
Antifuse FPGAs are entrenched in defense and aerospace platforms because the one-time-programmed configuration cannot be read back or altered, and the device powers up functional with zero configuration time - both properties valued in mission-critical avionics. The A54SX32-2TQG176I provides 32K-gate-class density (48,000 system gates, 1,800 cells) for functions such as ARINC-style bus glue logic, telemetry formatting, and discrete-to-digital conversion. Its sea-of-modules fabric gives deterministic routing delays, simplifying worst-case timing analysis required by safety reviews. The industrial temperature rating and long production history under Microsemi/Microchip support multi-decade platform sustainment. Designers should implement single-event-upset mitigation at the RTL level (TMR on registers) since the antifuse fabric is flip-flop based, and rely on the manufacturer datasheet timing models for certification evidence.
Recommended
Communications and Networking Line Cards
In telecom and networking line cards, the A54SX32-2TQG176I performs backplane bus bridging, framing, and control-plane glue logic where its 147 user I/O pins handle wide parallel buses. The SX family's up-to-320 MHz operation supports line-rate parallel data handling in legacy T1/E1 and early Ethernet equipment, and deterministic antifuse timing simplifies meeting backplane setup/hold budgets across temperature. The dual-rail supply (3.3V core/I-O and 5V rail) eases integration into mixed-voltage chassis designs. Because the configuration is fixed at programming, service providers gain protection against accidental or malicious logic changes in deployed cards. A practical consideration: antifuse OTP means any firmware feature change requires new silicon, so hold programmed spares for field-return service and validate the bitstream against every speed-grade bin used in production.
Recommended
Medical Instrumentation
Medical diagnostic equipment benefits from the A54SX32-2TQG176I's combination of instant-on operation, deterministic timing, and stable long-term supply. The 48,000-gate fabric implements front-end sequencing, ADC control interfaces, and safety interlock logic, while the 147 user I/Os connect sensor arrays, displays, and the host processor. Antifuse non-volatility ensures the instrument's logic is active the moment power is applied - important for patient-safety interlocks that must default to a safe state without depending on a configuration load. The industrial -40C to +85C rating exceeds typical clinical requirements, adding margin for transport and storage conditions. Regulatory teams also value that the programmed configuration is immutable, easing design-history documentation. Verify the 3V-3.6V and 4.75V-5.25V rails against the instrument's power architecture and add local decoupling per pin group.
Recommended
Test and Measurement Equipment
Bench and automated test instruments use the A54SX32-2TQG176I as trigger logic, timing generators, and bus interface fabric. The sea-of-modules architecture delivers predictable, low-skew clock distribution - with device operation up to 320 MHz - which matters for trigger alignment and counter/timer accuracy. Its 1,800 logic cells and 147 user I/Os handle multi-channel stimulus/response interfacing, and the dual 3.3V/5V supply rails connect directly to legacy instrument backplanes. Because antifuse configuration is hard-wired, instruments recalibrate and become operational immediately at power-up, reducing boot time in rack systems that power-cycle frequently. A design tip: implement trigger delay chains in R-cells for matched delays and confirm setup/hold against the -2 speed grade AC tables in the 54SX datasheet before locking the programming file.
Recommended
Secure Embedded Systems
The A54SX32-2TQG176I's antifuse technology makes it a strong choice for security-sensitive embedded systems: there is no bitstream stored in external flash to extract, and the programmed interconnect cannot be read back, defending against reverse-engineering of proprietary logic. Systems such as authentication dongles, key-management boards, and secure boot gatekeepers use the 48,000-gate fabric for state machines, challenge-response logic, and bus firewalls. Instant-on behavior removes boot-time attack windows that SRAM FPGAs expose while loading configuration. The industrial temperature range and dual-rail operation (3V-3.6V, 4.75V-5.25V) fit both embedded and rack environments. Trade-off to communicate to program managers: OTP logic cannot be field-updated, so security patches require hardware swap - keep pre-programmed, version-controlled spare stock and use Microsemi programming services with audited bitstream handling.
Recommended
Recommended Products Summary
Engineering reference data for A54SX32-2TQG176I — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | A54SX32A-2TQG176I | A54SX32-1TQG176I | A54SX32-TQG176I | A54SX32-2TQG176 | A54SX32-2TQ176I |
|---|---|---|---|---|---|---|
| Package | 176-TQFP (24x24 mm) | 176-TQFP (24x24 mm) - same | 176-TQFP (24x24 mm) - same | 176-TQFP (24x24 mm) - same | 176-TQFP (24x24 mm) - same | 176-TQFP (24x24 mm) - same |
| Brand | Microsemi (Microchip) | Microsemi | Microsemi | Microsemi | Microsemi | Microsemi |
| System Gates | 48,000 | 32K-class (same density) | 48,000 | 48,000 | 48,000 | 48,000 |
| Speed Grade / Frequency | -2 / up to 320 MHz | -2 / ~278 MHz (SX-A 0.25 um) | -1 / slower timing | [DATA_NEEDED] | -2 / up to 320 MHz | -2 / up to 320 MHz |
| Supply Voltage | 3V-3.6V and 4.75V-5.25V | [DATA_NEEDED] (SX-A rails differ per FindIC) | 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 |
| Operating Temperature | -40C to +85C (industrial) | -40C to +85C (I suffix) | -40C to +85C (industrial) | Commercial (0C to +70C) | Commercial (no I suffix) | -40C to +85C (industrial) |
| RoHS / Lead Finish | RoHS compliant, lead free (G suffix) | RoHS compliant (G) | RoHS compliant (G) | RoHS compliant (G) | RoHS compliant (G) | Non-G, lead-bearing - not RoHS |
| Technology / Programmability | 0.35 um antifuse (OTP) | 0.25 um antifuse (OTP) | 0.35 um antifuse (OTP) | 0.35 um antifuse (OTP) | 0.35 um antifuse (OTP) | 0.35 um antifuse (OTP) |
Key Differentiators
- Deterministic 0.35 um antifuse timing (vs A54SX32A-2TQG176I)
- Industrial temperature rating (vs A54SX32-2TQG176)
- RoHS-compliant green package (vs A54SX32-2TQ176I)
- Faster speed grade availability (vs A54SX32-1TQG176I)
Design Notes
The A54SX32 is one-time programmable (antifuse OTP). Never release the programming file before completing post-place-and-route timing verification and gate-level simulation in the Microsemi Designer/Libero flow - a logic error cannot be patched in the field and requires new silicon. Budget for programming yield (industry practice commonly reserves 5-10% spare programmed parts) and keep version-controlled bitstream archives tied to the exact designer software revision used to generate them, since toolchain version changes can alter routing and timing.
The device requires dual rails: 3V-3.6V and 4.75V-5.25V per the Microchip USA specification. Sequence or at least decouple both domains carefully: fit 0.1 uF ceramic capacitors at each supply/ground pin pair on all four sides of the 176-TQFP plus 10 uF bulk per rail. Estimate: with 147 user I/O, I/O switching current can dominate total power - use the datasheet current equations with your actual toggle rates rather than assuming worst case, and confirm regulator droop during simultaneous bus switching.
Design the 176-TQFP (24x24 mm) footprint directly from the manufacturer mechanical drawing in the 54SX family datasheet (a54sx_ds.pdf) rather than from third-party CAD libraries, which are frequently wrong for mature Actel packages. Use the programming pin assignments exactly as specified - they are fixed and must not be repurposed. For signal integrity on the 5V-tolerant interface domain, keep stub lengths short on parallel buses and verify setup/hold with the -2 grade AC tables; the deterministic antifuse routing makes these calculations reliable once the design is routed.
Compliance Information
RoHS Compliant and Lead Free per digchip.com datasheet listing for A54SX32-2TQG176I. REACH, halogen-free, and conflict-minerals status not stated in provided data - request declarations from Microchip/Microsemi.
