A42MX24-3PLG84I - 36K Gate FPGA 84-PLCC | Microchip
MPN: A42MX24-3PLG84I ⚠ Last Time Buy| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $62 | $62.00 |
| 10 | $57.5 | $575.00 |
| 100 | $52 | $5,200.00 |
| 500 | $47 | $23,500.00 |
| 1,000 | $43.5 | $43,500.00 |
Drop-in alternatives for A42MX24-3PLG84I — 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:
A42MX24-3PLG84
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View Datasheet →A42MX09-3PLG84
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View Datasheet →A42MX16-1PLG84I
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View Datasheet →A42MX24-3PLG84I Maximum Ratings & Electrical Characteristics
| Family | 42MX |
| System Gates | 36000 |
| Logic Cells | 912 |
| Process Technology | 0.45 um |
| Supply Voltage | 3V ~ 3.6V, 4.75V ~ 5.25V |
| Speed Grade | -3 |
| User I/O | 72 |
| Package | 84-LCC (J-Lead) / 84-PLCC (29.31x29.31 mm) |
| Mounting Type | Surface Mount |
| Operating Temperature | -40C to +85C (industrial, -I suffix) |
| Programming Technology | Antifuse (non-volatile) |
| RoHS Status | ROHS3 Compliant |
| Lead Free | Yes |
| Packaging | Tray |
| Manufacturer Lead Time | [DATA_NEEDED: manufacturer lead time] |
A42MX24-3PLG84I 84-lcc (j-lead) / 84-plcc (29.31x29.31 mm) Pin Configuration Guide
Complete pinout information for A42MX24-3PLG84I (84-lcc (j-lead) / 84-plcc (29.31x29.31 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 A42MX24-3PLG84I.
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
A42MX24-3PLG84I is suitable for 6 applications: Legacy System Obsolescence Redesign, Aerospace and Defense Interface Logic, Industrial Control Glue Logic, Communications Backplane Control, Test and Measurement Fixture Logic, ASIC Prototyping and Low-Volume Bridge.
Legacy System Obsolescence Redesign
The MX family is Microsemi's designated platform for integrating legacy PLDs and discontinued logic into a single chip. With 36K gates, dual 3.3V/5V operation, and the mechanically robust 84-PLCC package, the A42MX24-3PLG84I can absorb multiple 22V10-class PLDs, bus transceivers' glue logic, and address decoders while remaining pin-compatible with older MX-based boards. Its antifuse programming is non-volatile, so retrofitted systems power up instantly without configuration devices - a key requirement when replacing components in equipment that must boot unattended.
Recommended
Aerospace and Defense Interface Logic
Actel/Microsemi antifuse FPGAs have a long heritage in defense and aerospace programs because their antifuse interconnect resists configuration upsets and needs no external boot flash. The industrial-temperature A42MX24-3PLG84I provides 36K gates of deterministic-logic for bus interface bridging, discrete I/O conditioning, and wide-decode functions via D-modules that emulate CPLD-style fast AND arrays. The 5V-tolerant architecture directly interfaces MIL-style 5V signaling, and the PLCC J-lead package withstands vibration better than fine-pitch QFP alternatives.
Recommended
Industrial Control Glue Logic
In industrial controllers, PLC I/O cards, and motor-drive backplanes, the A42MX24-3PLG84I consolidates address decoding, interrupt arbitration, and status multiplexing that previously occupied several SSI/MSI devices. The dual 3.3V/5V supply ranges (3V~3.6V and 4.75V~5.25V) let it sit directly on legacy 5V control buses without level translators, while 912 logic cells and D-module wide-decode deliver fast, deterministic decode times. Its instant-on antifuse configuration eliminates boot-delay concerns in machines that must respond at power-up.
Recommended
Communications Backplane Control
Telecom and datacom line cards historically used MX FPGAs for backplane handshaking, board identification, and hot-swap control sequencing. The A42MX24-3PLG84I's 72 user I/O and 36K gates implement JTAG boundary-scan-friendly control fabrics with wide-input AND decode for address and slot identification. Because the antifuse fabric is write-once and non-volatile, line cards recover instantly after power cycles or shelf storage - unlike SRAM FPGAs that need reconfiguration - reducing field MTTR in carrier-grade equipment.
Recommended
Test and Measurement Fixture Logic
Bed-of-nails fixtures and automated test equipment benefit from the A42MX24-3PLG84I as a reprogrammable (one-time) but re-manufacturable decode resource: fixtures can be rebuilt with fresh devices per test revision. Wide-decode D-modules give fast channel-select AND functions with predictable propagation, important for timing-accurate stimulus routing. The 5V-tolerant I/O interfaces directly with legacy TTL-level test signals, and the PLCC socket-compatible package lets fixtures swap devices without soldering during calibration.
Recommended
ASIC Prototyping and Low-Volume Bridge
Microchip markets MX as a reliable, single-chip ASIC alternative for high-volume, low-cost integration. Before ASIC tape-out, the A42MX24-3PLG84I prototypes control-plane logic of approximately 36K gates; the same netlist maps to production MX devices for bridge production. The 0.45 um antifuse process offers gate-level timing close to the original ASIC library targets, and the -3 speed grade minimizes timing closure risk. For volumes too low for ASIC economics, MX becomes the permanent production silicon itself.
Recommended
Recommended Products Summary
Engineering reference data for A42MX24-3PLG84I — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | A42MX24-3PLG84 | A42MX24-2PLG84I | A42MX16-3PLG84 | A42MX09-3PLG84 |
|---|---|---|---|---|---|
| Package | 84-PLCC (J-Lead) | 84-PLCC (J-Lead) - same | 84-PLCC (J-Lead) - same | 84-PLCC (J-Lead) - same | 84-PLCC (J-Lead) - same |
| Brand | Microchip Technology (Microsemi) | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| System Gates | 36000 | 36000 | 36000 | 24000 | 9000 |
| Logic Cells | 912 | 912 | 912 | 608 | 228 |
| Speed Grade | -3 (fastest) | -3 | -2 | -3 | -3 |
| Temperature Range | Industrial (-40C to +85C) | Commercial (0C to +70C) | Industrial | [DATA_NEEDED] | [DATA_NEEDED] |
| Supply Voltage | 3.3V / 5V dual | 3.3V / 5V dual | 3.3V / 5V dual | 3.3V / 5V dual | 3.3V / 5V dual |
| Lifecycle Status | Last Time Buy | Last Time Buy | Last Time Buy | Last Time Buy | Last Time Buy |
Key Differentiators
- Fastest -3 speed grade with industrial rating (vs A42MX24-2PLG84I)
- Maximum density available in the 84-PLCC footprint (vs A42MX16-3PLG84)
- Industrial temperature for harsh environments (vs A42MX24-3PLG84)
Design Notes
The A42MX24-3PLG84I requires dual supplies: 3.3V (3V~3.6V) for core/output and 5V (4.75V~5.25V) per the 40MX/42MX datasheet DS2316. Verify rail sequencing against your board's power tree; add 0.1uF ceramic decoupling per supply pin plus bulk 10uF at the device. The 5V tolerance is a key legacy advantage, but do not mix 5V inputs on a 3.3V-only bank - consult the datasheet I/O configuration tables.
This part is antifuse-programmed and one-time programmable: an incorrect bitstream permanently consumes the device. Always validate the design fully in simulation (Libero/Microchip design tools) and, if possible, on a commercial-temperature A42MX24-3PLG84 before programming industrial units. Also confirm timing closure at speed grade -3; if slack is thin, the -2 or -1 grade parts will not meet timing as drop-ins.
The 84-PLCC J-lead package is socket-compatible, which simplifies field replacement but adds contact inductance; keep JTAG TCK lines short and series-terminate if the chain exceeds a few inches. Provide a solid ground plane under the PLCC and follow the DS2316 PLG84 mechanical drawing (29.31x29.31 mm) for land pattern dimensions to ensure socket compatibility.
Compliance Information
ROHS3 Compliant per Microchip USA product listing; LEAD FREE per PCB Electronics listing.
