A42MX24-2PLG84I - 36K Gate Antifuse FPGA, 84-PLCC | Microchip
MPN: A42MX24-2PLG84I ✓ Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $78.5 | $78.50 |
| 10 | $71.2 | $712.00 |
| 100 | $64.8 | $6,480.00 |
| 500 | $59.9 | $29,950.00 |
| 1,000 | $55.4 | $55,400.00 |
Drop-in alternatives for A42MX24-2PLG84I — 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
✅ Drop-In✓ In Stock
$44.2 / Unit
View Datasheet →A42MX24-2PLG84
✅ Drop-In📋 Reference alternative (not in catalog)
A42MX24-PLG84I
✅ Drop-In📋 Reference alternative (not in catalog)
A42MX16-2PLG84I
✅ Drop-In✓ In Stock
$30.8 / Unit
View Datasheet →A42MX16-1PLG84I
✅ Drop-In✓ In Stock
$1 / Unit
View Datasheet →A42MX09-2PLG84
✅ Drop-In✓ In Stock
$23.9 / Unit
View Datasheet →A42MX24-2PLG84I Maximum Ratings & Electrical Characteristics
| Family | MX (42MX) |
| System Gates | 36000 gates |
| Logic Cells | 912 cells |
| User I/O | 72 |
| Technology | 0.45 um antifuse |
| Core Architecture Voltage | 5.0 V |
| I/O Voltage Support | 3.3 V / 5.0 V mixed |
| Speed Grade | -2 |
| Programmability | One-Time Programmable (antifuse) |
| Operating Temperature | -40C to +85C (Industrial) |
| Package | 84-PLCC (J-Lead) |
| Mounting Type | Surface Mount |
| Configuration | No external boot device required |
| Dedicated Decode Blocks | D-modules (wide-input AND, CPLD-like) |
| RoHS Status | Lead Free (per Kynix listing) |
| Packaging | Tray |
| Primary Applications | ASIC alternative, legacy PLD integration |
A42MX24-2PLG84I Pin Configuration
| Pin 1 | IO[DATA_NEEDED: exact pin assignment] — User I/O - see 40MX/42MX family datasheet PLCC84 pin table for exact assignment |
| Pin 2 | IO — User I/O |
| Pin 11 | GND — Ground (representative location) |
| Pin 22 | VCCI — I/O supply / programming voltage (representative location) |
| Pin 42 | CLK — Dedicated clock input (representative location) |
| Pin 84 | IO — User I/O |
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
A42MX24-2PLG84I is suitable for 6 applications: Legacy PLD / Glue Logic Consolidation, Defense and Avionics Subsystems, Industrial Control and Automation, Mixed 3.3V/5V Bus Bridging, Telecommunications Line Cards, Test and Measurement Fixtures.
Legacy PLD / Glue Logic Consolidation
The A42MX24-2PLG84I is purpose-built by Microchip as a single-chip ASIC alternative for integrating legacy PLDs, PALs, and glue logic into one low-cost device. Its 36,000 gates and 912 cells absorb multiple 22V10-class devices, while D-modules provide fast wide-input decode functions similar to CPLD architectures - ideal for address decoding and bus control. The 84-PLCC package simplifies replacement of socketed legacy parts, and one-time-programmable antifuse fabric removes the boot-flash BOM line entirely.
Recommended
Defense and Avionics Subsystems
Antifuse FPGAs are favored in defense and aerospace programs because the configuration cannot be read back, survives radiation-tolerant system profiles, and powers up instantly with no configuration device to fail. The A42MX24-2PLG84I's industrial -40C to +85C rating, deterministic interconnect delays, and mature 0.45um process with long-lifecycle availability make it suitable for interface control, bus bridging, and sequencer logic in avionics LRUs and ground systems. The 84-PLCC J-lead package also eases rework in low-volume programs.
Recommended
Industrial Control and Automation
In industrial controllers and motor-drive interface boards, the A42MX24-2PLG84I provides 5.0V-tolerant I/O that connects directly to legacy PLC backplanes and sensor buses without level shifters. The 72 user I/O and wide-decode D-modules implement address decoding, interlock logic, and I/O expansion with microsecond-deterministic response. Its antifuse fabric retains configuration through brownouts and power cycles - important in factory environments - while the industrial temperature rating covers uncontrolled cabinet conditions from -40C to +85C.
Recommended
Mixed 3.3V/5V Bus Bridging
The MX family's mixed-voltage I/O makes the A42MX24-2PLG84I an effective bridge between 5V TTL/CMOS systems and 3.3V subsystems. Designers frequently use it to interface modern 3.3V microcontrollers to 5V ISA-style, VME, or proprietary backplanes. With 72 I/O supporting both 3.3V and 5.0V signaling in a single 84-PLCC device, it replaces banks of level-shifting transceivers, cutting BOM cost and board area. Deterministic antifuse routing also keeps bus setup/hold timing stable across production lots.
Recommended
Telecommunications Line Cards
Legacy telecom line cards and backplane adapters rely on the A42MX24-2PLG84I for framing-glue, control-plane decode, and LED/relay drive sequencing. Its instant-on antifuse configuration means line cards are active the moment power is applied - no configuration delay that would trip backplane hot-swap supervisors. The 36K-gate capacity covers T1/E1 glue logic and alarm aggregation, and the PLCC package supports the rework-heavy provisioning workflows typical of NEBS-style equipment maintenance.
Recommended
Test and Measurement Fixtures
Prototype and production test fixtures benefit from the A42MX24-2PLG84I's combination of socket-friendly 84-PLCC packaging, instant power-up, and fixed timing. Fixtures use its 72 I/O and D-module decoders to implement address generators, stimulus sequencers, and pass/fail combinational monitors. Because antifuse programming is permanent, a validated fixture configuration is bit-reproducible across every programmed unit - an advantage over SRAM FPGAs where bitstream or configuration-flash variation can alter fixture timing between builds.
Recommended
Recommended Products Summary
Engineering reference data for A42MX24-2PLG84I — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | A42MX24-3PLG84 | A42MX24-2PLG84 | A42MX24-PLG84I | A42MX16-2PLG84I |
|---|---|---|---|---|---|
| Package | 84-PLCC (J-Lead) | 84-PLCC - same | 84-PLCC - same | 84-PLCC - same | 84-PLCC - same |
| Brand | Microchip Technology (Microsemi/Actel) | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| System Gates | 36,000 | 36,000 | 36,000 | 36,000 | 16,000 |
| Logic Cells | 912 | 912 | 912 | 912 | 408 |
| User I/O | 72 | 72 | 72 | 72 | [DATA_NEEDED] |
| Speed Grade | -2 | -3 (faster) | -2 | standard (slower) | -2 |
| Operating Temperature | -40C to +85C (Industrial) | Commercial | Commercial | Industrial | Industrial |
| Architecture / Technology | Antifuse, 0.45um, 3.3V/5V I/O | Antifuse, 0.45um, 3.3V/5V I/O | Antifuse, 0.45um, 3.3V/5V I/O | Antifuse, 0.45um, 3.3V/5V I/O | Antifuse, 0.45um, 3.3V/5V I/O |
| Approx. Unit Price (qty 1) | $78.50 as of 2026-08-30 | [DATA_NEEDED] | [DATA_NEEDED] | [DATA_NEEDED] | [DATA_NEEDED] |
Key Differentiators
- One-time-programmable antifuse security (vs Modern SRAM FPGAs (e.g., Artix-7 class))
- Native 5.0V architecture with 3.3V/5V mixed I/O (vs A42MX16-2PLG84I)
- Industrial temperature rating in PLCC (vs A42MX24-2PLG84)
- Trade-off: lower density and speed than modern FPGAs (vs A42MX24-3PLG84)
Design Notes
The A42MX24-2PLG84I is one-time programmable. Complete behavioral simulation, synthesis, and static timing analysis (industrial corner, speed grade -2) in Microchip Libero SoC BEFORE programming, and use a socketed device for first-article bring-up. Programmed antifuses cannot be erased, so an unverified bitstream means a scrapped device.
The MX family uses a 5.0V architecture with 3.3V/5.0V mixed I/O. Provide clean 5V to the core/VCI pins and decouple each supply pin with 0.1uF ceramic plus 10uF bulk capacitance. Verify which pins are reserved for programming voltages (VPP/VCI) in the datasheet PLCC84 table and never drive them during normal operation - doing so can corrupt the device.
The 84-PLCC J-lead package has ~1.27mm lead pitch with leads on all four sides. Keep clock traces short to dedicated CLK pins, use a solid ground plane, and place 0.1uF decoupling inside the PLCC footprint. PLCC sockets add contact reliability concerns in vibration environments - prefer direct soldering for shock/vibration applications.
With 0.45um antifuse technology and 912 cells, static power is low and no heatsink is needed for typical glue-logic utilization. Still, verify junction temperature with theta_JA for PLCC-84 (approx. [DATA_NEEDED: theta_JA value]) if driving many 5V outputs at high toggle rates, since 5V I/O switching dominates power in MX designs.
Compliance Information
Listed as LEAD FREE by Kynix distributor listing. Full RoHS/REACH declarations should be requested from Microchip for production PPAP packs.
