A42MX24-3PLG84I - 36K Gate FPGA 84-PLCC | Microchip
料号： A42MX24-3PLG84I ⚠ 最后一次采购| 数量 | 单价 | 小计 |
|---|---|---|
| 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 |
A42MX24-3PLG84I 概述
A field programmable gate array (FPGA) is an integrated circuit that engineers configure after manufacturing to implement custom digital logic. The MX family sits within the broader taxonomy of FPGA > programmable logic device > semiconductor, and unlike SRAM-based FPGAs, its antifuse-based programming is non-volatile and radiation-tolerant by construction, requiring no configuration device at power-up.
Key features include 36K system gates with D-modules arranged around the device periphery providing fast, wide-input AND decode functions similar to CPLD architectures, an efficient flexible 5.0V-tolerant architecture, and legacy PLD integration on a single low-cost device. Speed grade -3 denotes the fastest commercial/industrial bin in the family. The 84-PLCC (29.31x29.31 mm) surface-mount package offers through-hole-like mechanical robustness favored in aerospace, industrial, and defense retrofits.
Architecturally, the device combines combinatorial R-modules, sequential C-modules, and wide-decode D-modules, enabling glue logic consolidation, bus interfacing, and state-machine implementation with deterministic timing. Microsemi (now Microchip) positioned MX as a high-volume ASIC replacement platform.
Typical applications include legacy system obsolescence redesign, industrial control glue logic, military/aerospace interface bridging, and communications backplane control.
Design consideration: verify power sequencing of the 3.3V and 5.0V rails and confirm last-time-buy status against your lifecycle plan, as the MX family is in end-of-life transition. Prices as of 2026-08-30.
直接替换替代料： A42MX24-3PLG84I ——相同封装，引脚兼容。需要 PCB 改动的不同封装料号已排除。
本系列中的变体
可与以下型号直接替换的同系列型号： A42MX24-3PLG84I （相同外形与封装尺寸） ——差异在于 Package, Operating Temperature, Family, System Gates, RoHS Status.
快速对比工具——选择替代料号进行并排对比：
A42MX24-3PLG84
✅ 直接替换✓ 有现货
$44.2 / 个
查看数据手册 →A42MX24-2PLG84I
✅ 直接替换✓ 有现货
$55.4 / 个
查看数据手册 →A42MX16-3PLG84
✅ 直接替换✓ 有现货
$1 / 个
查看数据手册 →A42MX16-2PLG84I
✅ 直接替换✓ 有现货
$30.8 / 个
查看数据手册 →A42MX09-3PLG84
✅ 直接替换✓ 有现货
$22.8 / 个
查看数据手册 →A42MX16-1PLG84I
✅ 直接替换✓ 有现货
$1 / 个
查看数据手册 →A42MX24-3PLG84I 最大额定值与电气特性
| Family | 42MX |
| System Gates | 36000 |
| Logic Cells | 912 |
| Process Technology | 0.45 um |
| 电源电压 | 3V ~ 3.6V, 4.75V ~ 5.25V |
| Speed Grade | -3 |
| User I/O | 72 |
| 封装 | 84-LCC (J-Lead) / 84-PLCC (29.31x29.31 mm) |
| 安装类型 | Surface Mount |
| 工作温度 | -40C to +85C (industrial, -I suffix) |
| Programming Technology | Antifuse (non-volatile) |
| RoHS 状态 | ROHS3 Compliant |
| Lead Free | Yes |
| Packaging | Tray |
A42MX24-3PLG84I 84-lcc (j-lead) / 84-plcc (29.31x29.31 mm) 引脚配置指南
A42MX24-3PLG84I（84-lcc (j-lead) / 84-plcc (29.31x29.31 mm) 封装）的引脚配置。 该数字 IC 包含 GPIO、通信接口（UART、SPI、I2C）和电源引脚。请参阅制造商数据手册以了解复用引脚功能和配置选项。对嵌入式系统设计和 PCB 布局至关重要。
暂无详细引脚数据： A42MX24-3PLG84I.
请参阅 数据手册 以查看完整引脚配置。
典型应用
A42MX24-3PLG84I 适用于 6 应用s: 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.
推荐
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.
推荐
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.
推荐
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.
推荐
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.
推荐
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.
推荐
推荐产品汇总
工程参考数据： A42MX24-3PLG84I ——对比、设计指导和合规信息。
选型指南
与替代料对比
| 参数 | 本产品 | 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 |
| 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 |
关键差异点
- Fastest -3 speed grade with industrial rating （对比 A42MX24-2PLG84I)
- Maximum density available in the 84-PLCC footprint （对比 A42MX16-3PLG84)
- Industrial temperature for harsh environments （对比 A42MX24-3PLG84)
设计说明
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.
合规信息
ROHS3 Compliant per Microchip USA product listing; LEAD FREE per PCB Electronics listing.
