A54SX16P-1PQ208I - 16K Gate SX FPGA, 208-PQFP | Microchip
MPN: A54SX16P-1PQ208I ✗ End of Life| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $68.5 | $68.50 |
| 10 | $62.1 | $621.00 |
| 100 | $55.8 | $5,580.00 |
| 500 | $49.9 | $24,950.00 |
| 1,000 | $44.2 | $44,200.00 |
Drop-in alternatives for A54SX16P-1PQ208I — same package, pin-to-pin compatible. Different-package parts requiring PCB rework are excluded.
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A54SX16P-1PQG208I
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View Datasheet →A54SX16P-PQG208I
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View Datasheet →A54SX16P-2PQG208
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View Datasheet →A54SX16P-1PQG208M
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View Datasheet →A54SX16P-PQ208I
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View Datasheet →A54SX16P-2PQG208I
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$38.5 / Unit
View Datasheet →A54SX16P-1PQG208
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View Datasheet →A54SX16P-1PQ208I Maximum Ratings & Electrical Characteristics
| Family | Actel SX (54SX) |
| Equivalent Gates | 16000 (24000 system gates per Microchip USA listing) |
| Logic Modules (Cells) | 924 |
| Configurable Logic Blocks (CLBs) | 1452 |
| User I/O | 175 |
| Maximum System Frequency | 280 MHz (320 MHz internal performance) |
| Clock-to-Out (Pin-to-Pin) | 3.7 ns |
| Input Set-Up Time | 0.1 ns |
| Clock Skew | 0.25 ns |
| Combinatorial CLB Delay | 0.8 ns |
| Supply Voltage (Core) | 3.0 V to 3.6 V (nominal 3.3 V) |
| I/O Voltage Support | 3.3 V with 5.0 V tolerance |
| Process Technology | 0.35 um CMOS, antifase interconnect |
| PCI Support | 66 MHz PCI single-chip integration |
| Temperature Grade | Industrial (-40C to +85C), suffix I |
| Package | 208-Pin PQFP (28x28 mm, 0.50 mm pitch, JESD-30 S-PQFP-G208) |
| Mounting Type | Surface Mount |
| Programming Technology | Antifase (non-volatile, factory/one-time programmable) |
A54SX16P-1PQ208I 208-pin pqfp (28x28 mm, 0.50 mm pitch, jesd-30 s-pqfp-g208) Pin Configuration Guide
Complete pinout information for A54SX16P-1PQ208I (208-pin pqfp (28x28 mm, 0.50 mm pitch, jesd-30 s-pqfp-g208) 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-1PQ208I.
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-1PQ208I is suitable for 6 applications: 66 MHz PCI Bus Interface, Industrial Control and Automation, Telecommunications Line Cards, Aerospace and Defense Legacy Sustainment, Test and Measurement Instrumentation, Legacy 5V/3.3V Mixed-Voltage Board Redesign.
66 MHz PCI Bus Interface
The A54SX16P-1PQ208I integrates a complete 66 MHz PCI target or master interface in a single chip. According to the Microchip 54SX datasheet, the SX P family was explicitly characterized for 66 MHz PCI compliance, with 3.7 ns pin-to-pin clock-to-out and 0.25 ns clock skew that keep critical path timing within the PCI 66 MHz budget. The 175 user I/O comfortably cover the 47-signal 32-bit PCI bus plus application glue logic, consolidating a discrete PCI bridge and support PLD into one device. Because the antifase fabric is non-volatile, the PCI interface is active the instant power is applied - important in systems where bus enumeration happens immediately at reset. The 3.3V core with 5V-tolerant I/O eases integration into legacy 5V PCI backplanes.
Recommended
Industrial Control and Automation
The industrial temperature rating of -40C to +85C (suffix I) makes the A54SX16P-1PQ208I a natural fit for factory automation controllers, motor-drive sequencers, and PLC I/O consolidation. Its 16,000 gates and 924 modules are sufficient to merge address decoders, counters, interrupt controllers, and state machines that would otherwise occupy several 74-series or CPLD devices, cutting board area and BOM cost. The 3.0V to 3.6V supply tolerance absorbs industrial rail variation, while 5V-tolerant inputs directly interface legacy 5V sensors and encoders without level shifters. Non-volatile antifase programming means the control logic is running at power-up with no configuration controller, improving system availability and reducing component count in electrically noisy environments.
Recommended
Telecommunications Line Cards
Telecom line cards historically used SX FPGAs for framing, HDLC controllers, backplane interface, and glue logic consolidation. The A54SX16P-1PQ208I's 280 MHz internal performance supports multi-channel serial handling at T1/E1 rates with wide margin, and its 0.8 ns combinatorial CLB delay keeps state-machine paths short. The 208-pin PQFP provides enough I/O (175) to address backplane connectors, line-interface chips, and microprocessor buses simultaneously. The antifase fabric's immunity to configuration upsets at power-up suits equipment that must re-establish service immediately after a power event. Designers should verify total timing with Actel Designer against the -1 speed grade files for the specific clock rates used.
Recommended
Aerospace and Defense Legacy Sustainment
Actel antifase FPGAs were widely adopted in avionics, satellite, and defense electronics precisely because their non-volatile, readback-protected fabric resists configuration-cloning and powers up instantly. Boards still in service that use the A54SX16P-1PQ208I can be sustained with identical die builds: the -M temperature-suffix variant (A54SX16P-1PQG208M) covers extended/military ambients, and the same-package family allows re-sourcing without PCB changes. The 0.35 um CMOS process is well-characterized for total-ionizing-dose behavior relative to modern deep-submicron nodes, one reason these parts persist in heritage platforms. Any redesign should keep the same programming flow and re-verify pin locking in Actel Designer before committing to a new build.
Recommended
Test and Measurement Instrumentation
Bench instruments, ATE boards, and protocol analyzers benefit from the A54SX16P-1PQ208I's combination of deterministic timing (0.25 ns clock skew, 0.1 ns setup) and instant-on behavior for trigger and timing-generation logic. The 175 user I/O let one device connect to front-panel interfaces, ADC/DAC control buses, and system backplanes simultaneously. Because the antifase fabric introduces no configuration latency, measurement channels are consistent from the first trigger after power-up - a subtle but real advantage over SRAM FPGAs whose first-capture behavior can differ during configuration. The 3.3V supply with 5V-tolerant inputs simplifies interfacing to legacy instrument buses operating at 5V TTL levels.
Recommended
Legacy 5V/3.3V Mixed-Voltage Board Redesign
When consolidating an older board that mixes 5V TTL devices with 3.3V logic, the A54SX16P-1PQ208I's 5.0V-tolerant I/O (at 3.3V core supply, 3.0V-3.6V range) eliminates level-shifter components on inputs sourced from 5V drivers. The device can absorb decoders, bus transceivers' control logic, and interrupt aggregation, shrinking a two-era board into a cleaner single-fabric design. The 66 MHz PCI capability also lets designers add a modern PCI host interface to legacy systems in the same device. Layout-wise, the 28x28 mm PQFP with 0.5 mm pitch is hand-assemblable and rework-friendly compared with ball-grid alternatives, an advantage for low-volume industrial and repair-oriented production.
Recommended
Recommended Products Summary
Engineering reference data for A54SX16P-1PQ208I — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | A54SX16P-1PQG208I | A54SX16P-2PQG208 | A54SX16P-PQ208I |
|---|---|---|---|---|
| Brand | Microchip Technology (Actel/Microsemi) | Microchip Technology | Microchip Technology | Microchip Technology |
| Package | 208-Pin PQFP (28x28 mm) | 208-Pin PQFP - same footprint | 208-Pin PQFP - same footprint | 208-Pin PQFP - same footprint |
| Equivalent Gates | 16000 (924 modules) | 16000 (924 modules) | 16000 (924 modules) | 16000 (924 modules) |
| User I/O | 175 | 175 | 175 | 175 |
| Speed Grade | -1 (280 MHz system) | -1 (280 MHz system) | -2 (faster, higher margin) | Standard (base timing) |
| Temperature Range | -40C to +85C (Industrial, I suffix) | -40C to +85C | 0C to +70C (Commercial) | -40C to +85C |
| Supply Voltage | 3.0 V - 3.6 V (3.3 V nominal), 5 V tolerant I/O | 3.0 V - 3.6 V, 5 V tolerant I/O | 3.0 V - 3.6 V, 5 V tolerant I/O | 3.0 V - 3.6 V, 5 V tolerant I/O |
| Lead Finish / Compliance | [DATA_NEEDED] | G suffix - green / lead-free build | G suffix - green / lead-free build | Original (non-green) build |
Key Differentiators
- Industrial temperature rating (vs A54SX16P-2PQG208)
- Faster speed grade available at same footprint (vs A54SX16P-2PQG208I)
- Lead-free build option (vs A54SX16P-PQ208I)
Design Notes
The A54SX16P-1PQ208I operates from a nominal 3.3V core supply with an allowed range of 3.0V to 3.6V; a second 5.0V pin group (4.75V to 5.25V per Microsemi listings) may be used to enable 5V-tolerant/5V PCI operation depending on the pin group assignment. Decouple each VCC pin with 0.1 uF ceramic capacitors placed within 2 mm of the pin, plus bulk 10 uF at the board level. Because antifase devices draw no configuration current, supply ramp requirements are relaxed versus SRAM FPGAs, but verify per the 54SX datasheet power-up specification before finalizing the power supply design.
The 208-PQFP is a 28x28 mm body with 0.50 mm lead pitch (JESD-30 S-PQFP-G208). Use a standard gull-wing footprint with solder lengths per IPC, and place at least one ground plane under the device to control return paths for the 66 MHz PCI signals. Keep clock routing short and matched in length across the PCI bus group. All 208 pin assignments must be confirmed against the package pinout tables in the Microchip 54SX family datasheet before layout sign-off, since I/O functions are pin-locked in Actel Designer.
Do not substitute the commercial-temperature variants (A54SX16P-2PQG208, A54SX16P-1PQG208, A54SX16P-PQG208) into industrial -40C to +85C applications - they are rated 0C to +70C. Confirm the speed grade in the programming file matches the physical device (-1 vs -2): programming a -1 timing-constrained design into a standard-grade device can produce marginal timing. Finally, verify RoHS/lead-finish requirements per lot, since both green (PQG208) and original (PQ208) builds exist in the family.
Compliance Information
Compliance not stated in retrieved distributor snippets. Both green (PQG208 lead-free) and original (PQ208 SnPb) build variants exist in the SX family; confirm RoHS status per specific lot and suffix via Microchip certificate of conformance.
