A54SX08-TQ144 - 12K Gate SX FPGA, 113 I/O | Microsemi
MPN: A54SX08-TQ144 β End of Life| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $42.5 | $42.50 |
| 10 | $39.8 | $398.00 |
| 100 | $36.2 | $3,620.00 |
| 500 | $33.1 | $16,550.00 |
| 1,000 | $30.4 | $30,400.00 |
Drop-in alternatives for A54SX08-TQ144 β same package, pin-to-pin compatible. Different-package parts requiring PCB rework are excluded.
Quick Comparison Tool β Select alternative parts for side-by-side comparison:
A54SX08-TQG144I
β Drop-Inπ Reference alternative (not in catalog)
A54SX08-2TQ144PP
β Drop-Inπ Reference alternative (not in catalog)
A54SX08-TQ144I
β Drop-In β οΈ εζ°εΎ ιͺθ―π Reference alternative (not in catalog)
A54SX16-TQ144
β Drop-In β οΈ εζ°εΎ ιͺθ―π Reference alternative (not in catalog)
A54SX32-TQ144
β Drop-In β οΈ εζ°εΎ ιͺθ―π Reference alternative (not in catalog)
A54SX08-TQ144 Maximum Ratings & Electrical Characteristics
| Series | SX |
| Equivalent Gate Count | 12000 gates |
| Number of LABs/CLBs | 768 |
| Number of I/O | 113 |
| Supply Voltage (core) | 3 V to 3.6 V |
| Supply Voltage (I/O) | 4.75 V to 5.25 V |
| Operating Temperature | 0C to +70C (TA) |
| Package / Case | 144-LQFP (144-TQFP, 20x20 mm) |
| Mounting Type | SMD (SMT) |
| Programmable Type | One-Time Programmable (antifuse) |
| Category | Integrated Circuits (ICs) - Embedded FPGAs |
| Terminal Pitch | 0.5 mm |
| Lifecycle Status | Obsolete (EOL) |
| Packaging | Tray |
A54SX08-TQ144 144-lqfp (144-tqfp, 20x20 mm) Pin Configuration Guide
Complete pinout information for A54SX08-TQ144 (144-lqfp (144-tqfp, 20x20 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 A54SX08-TQ144.
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
A54SX08-TQ144 is suitable for 6 applications: Telecommunications Line Cards, Industrial Control and PLC I/O, Bus Bridging and Protocol Conversion, Secure/Cloning-Resistant Embedded Logic, Aerospace Legacy System Sustainment, Test and Measurement Instrumentation.
Telecommunications Line Cards
The A54SX08-TQ144 fits telecom line-card designs where deterministic timing and a 5V-tolerant I/O domain are required to bridge legacy backplanes such as T1/E1 framer interfaces. Its 12,000 gates and 768 CLBs consolidate framers, HDLC controllers, and glue logic that previously occupied multiple PLDs, while the antifuse fabric delivers fixed routing delays that simplify the timing analysis of multi-board synchronous links. Placed between a 5V backplane connector and 3.3V digital circuitry, the dual-rail supply (3.0-3.6V core, 4.75-5.25V I/O) eliminates level-shifters and their propagation delay. Because the device is one-time programmable, the configured design powers up instantly with no configuration fetch - a requirement for carrier-grade availability targets - and the absence of a readable bitstream protects proprietary line-protocol IP from cloning on manufactured boards.
Recommended
Industrial Control and PLC I/O
In industrial controllers, the A54SX08-TQ144 implements deterministic state machines, encoder interfaces, and safety interlock logic where boot-up time must be zero. The 113 user I/O directly accept 5V industrial sensor levels via the 4.75-5.25V I/O rail, removing external buffering in retrofit designs that mix legacy 24V-field interfacing electronics with modern logic. The antifuse fabric's immunity to configuration corruption from electrical noise or brownouts is a distinct advantage in factory environments where SRAM FPGA frames can flip. With 12,000 gates the device integrates counter/timer arrays and bus arbitration for PLC I/O racks in one package, cutting board area versus discrete 74-series logic. Designers should note the commercial 0C to +70C rating: for cabinet environments below 0C, select the industrial-grade A54SX08-TQG144I drop-in variant instead.
Recommended
Bus Bridging and Protocol Conversion
The A54SX08-TQ144 serves as a protocol and bus-width bridge between mismatched system domains, for example converting a 16-bit 5V VME-style backplane to a 3.3V microprocessor local bus. Its sea-of-modules architecture sustains high clock rates with low jitter because antifuse routing delays are fixed at programming time, meeting tight setup/hold budgets across the bridge path without dynamic re-route risk. With 113 I/O, wide 32-bit address/data multiplexed buses plus control signals fit in a single 144-pin TQFP, replacing a cluster of bus transceivers and PALs and cutting propagation latency by tens of nanoseconds per transfer. The dual supply rails let the same chip talk to both 5V and 3.3V sides simultaneously, which is the defining reason legacy bridge designs specified this SX part.
Recommended
Secure/Cloning-Resistant Embedded Logic
Designs protecting proprietary algorithms benefit from the A54SX08-TQ144's antifuse one-time programming: unlike SRAM FPGAs, there is no configuration bitstream stored on or loaded into the device, so read-back attacks and bitstream interception yield nothing. The Microchip SX datasheet describes the antifuse fabric as permanently programmed at the factory floor using Silicon Sculptor programmers, making reverse engineering require destructive delayering of each unit. Applications include licensed peripheral dongles, pay-TV conditional-access boards, and instrument firmware locks. The 12,000-gate capacity accommodates authentication state machines, hash-function datapaths, and counter-based key checks with margin. Teams must accept the trade-off: any post-release logic change requires physically new programmed devices, so freeze the design and maintain secure programming files plus unprogrammed spares.
Recommended
Aerospace Legacy System Sustainment
Although this commercial-grade TQ144 variant is rated 0C to +70C, the SX antifuse family's radiation-tolerant heritage means many aerospace ground equipment and test sets were built around it, and sustainment programs still require the exact part. The one-time-programmable fabric contains no configuration memory to upset, so boards power up immediately after reset - valuable in test instrumentation cycling power frequently. Its 12,000 gates reproduce original card logic exactly, avoiding risky re-designs of qualified avionics ground support equipment. Sourcing is the dominant engineering constraint since the part is obsolete: programs should buy-out remaining verified stock, then qualify the pin-compatible A54SX08-TQG144I active variant, re-running Libero Designer place-and-route and repeating board-level functional test before fleet-wide adoption.
Recommended
Test and Measurement Instrumentation
Bench and automated test equipment uses the A54SX08-TQ144 for timing generators, trigger matrices, and instrument backplane arbitration, where its fixed antifuse delays provide repeatable channel-to-channel skew that reprogrammable fabrics cannot guarantee run-to-run. The 113 I/O directly drive 5V TTL-level stimulus into legacy DUT interfaces, and the 320 MHz-class family timing supports high-resolution pulse generation in speed-grade variants. Because the design is hard-wired after programming, measurement calibration stays valid across power cycles with no configuration reload jitter. In production testers, the non-readable configuration also protects proprietary test patterns from extraction by contract manufacturers. Engineers should budget the one-time programming step into production flow and keep programmed spare devices since field firmware updates are impossible with antifuse silicon.
Recommended
Recommended Products Summary
Engineering reference data for A54SX08-TQ144 β comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | A54SX08-TQG144I | A54SX08-2TQ144PP | A54SX16-TQ144 | A54SX32-TQ144 |
|---|---|---|---|---|---|
| Package | 144-LQFP (20x20 mm) | 144-LQFP - same | 144-TQFP (PQFP) - same | 144-TQFP - same | 144-TQFP - same |
| Brand | Microsemi | Microsemi (Microchip) | Microchip Technology | Microsemi | Microsemi |
| Equivalent Gates | 12000 | 12000 | 8000 (variant designation) | 24000 | 36000 |
| Number of CLBs | 768 | 768 | 768 | [DATA_NEEDED] | [DATA_NEEDED] |
| User I/O | 113 | 113 | [DATA_NEEDED] | [DATA_NEEDED] | [DATA_NEEDED] |
| Supply Voltage | 3-3.6 V / 4.75-5.25 V | 3-3.6 V / 4.75-5.25 V | [DATA_NEEDED] | 3-3.6 V / 4.75-5.25 V | 3-3.6 V / 4.75-5.25 V |
| Operating Temperature | 0C to +70C | -40C to +85C (industrial) | [DATA_NEEDED] | 0C to +70C (C grade) | 0C to +70C (C grade) |
| Lifecycle Status | Obsolete (EOL) | Active | [DATA_NEEDED] | [DATA_NEEDED] | [DATA_NEEDED] |
Key Differentiators
- Active-production replacement available in identical footprint (vs A54SX08-TQG144I)
- Faster timing headroom without PCB change (vs A54SX08-2TQ144PP)
- Upgrade path on the same board (vs A54SX16-TQ144)
Design Notes
The A54SX08-TQ144 requires two supply rails: 3.0-3.6V for the core and 4.75-5.25V for the I/O bank. Decouple each rail with at least 0.1 uF ceramic per pair of VCC pins plus 10 uF bulk per rail, placed within 5 mm of the pins given the 0.5 mm-pitch 144-TQFP escape density. Sequencing is not critical per the SX family datasheet, but keep the 5V I/O rail within absolute maximums during hot-swap events; a series ferrite on the 5V domain tames backplane inrush. Verify per-rail current from the Libero Designer power report before finalizing the regulator budget.
This part is one-time-programmable and obsolete. Never treat it like an SRAM FPGA: a logic bug after programming means scrapping physical silicon, so complete full simulation (gate-level, post-layout back-annotated timing) in Libero Designer before committing antifuse programming files. Because the plain -TQ144 commercial part is EOL, specify the active A54SX08-TQG144I in new BOMs - it is footprint-identical but adds industrial temperature and lead-free finish, both of which also ease RoHS compliance audits on otherwise legacy boards.
The 144-TQFP 20x20 mm outline with 0.5 mm pitch requires 0.2-0.25 mm trace/space under the lead rows; a single 5-mil design rule escapes all 144 leads on two signal layers. Use a solid ground plane on layer 2 with via stitching along the package perimeter to control return paths for the 5V I/O domain. Provide a thermal pad of vias to ground plane under the die center to aid heat spreading - the TQFP theta_JA depends strongly on plane copper area. Keep high-fanout clock sources within 20 mm of the clock input pin to preserve the family's low-jitter advantage.
Compliance Information
Verified web data does not state RoHS/REACH status for the base -TQ144 (obsolete) part. The green lead-free A54SX08-TQG144I variant should be assumed for compliance-driven designs; confirm certificates with Microchip.
