A42MX24-1PLG84I - 36K Gate MX FPGA, PLCC-84 | Microchip
MPN: A42MX24-1PLG84I ⚠ Last Time Buy| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $68.5 | $68.50 |
| 10 | $62.1 | $621.00 |
| 100 | $55.9 | $5,590.00 |
| 500 | $50.3 | $25,150.00 |
| 1,000 | $45.2 | $45,200.00 |
Drop-in alternatives for A42MX24-1PLG84I — 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:
A42MX24-2PLG84I
✅ Drop-In✓ In Stock
$55.4 / Unit
View Datasheet →A42MX24-3PLG84I
✅ Drop-In✓ In Stock
$43.5 / Unit
View Datasheet →A42MX24-PLG84M
✅ Drop-In✓ In Stock
$1142.38 / Unit
View Datasheet →A42MX24-1PLG84I Maximum Ratings & Electrical Characteristics
| System Gates | 36000 |
| Logic Cells / Logic Blocks | 912 |
| Family | MX (42MX) |
| Process Technology | 0.45 um CMOS |
| Supply Voltage | 3V ~ 3.6V, 4.5V ~ 5.5V |
| I/O Count (this package) | 72 |
| Max User I/O (family) | 202 |
| Dual-Port SRAM | 2.5 kbits |
| Operating Temperature | -40C to +85C |
| Package | 84-LCC (J-Lead, PLCC-84) |
| Mounting Type | Surface Mount |
| Logic Family | CMOS |
| Speed Grade | -1 |
| RoHS Status | ROHS3 Compliant |
| Packaging | Tray |
| Manufacturer Lead Time | 10 weeks |
| Product Status | Last Time Buy |
A42MX24-1PLG84I 84-lcc (j-lead, plcc-84) Pin Configuration Guide
Complete pinout information for A42MX24-1PLG84I (84-lcc (j-lead, plcc-84) 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 A42MX24-1PLG84I.
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
A42MX24-1PLG84I is suitable for 6 applications: Legacy PLD Consolidation, Industrial Control Systems, ASIC Prototyping and Bridge Logic, Mil/Aerospace Program Sustainment, Test and Measurement Equipment, Communication and Networking Line Cards.
Legacy PLD Consolidation
The MX family was explicitly built by Microchip as a platform for integrating legacy PLDs into a single, low-cost device. A42MX24's 36,000 gates and 912 logic cells absorb multiple PAL/GAL/22V10 devices plus glue logic, cutting board area and BOM count. Its antifuse configuration is live at power-up with no external boot PROM, matching the instant-on behavior of the PLDs it replaces. The dual 3.3V/5V supply support lets the consolidated logic interface directly with older 5V boards where modern 1.8V~3.3V FPGAs would need level translators.
Recommended
Industrial Control Systems
With -40C to +85C industrial temperature rating and 5V-tolerant I/O, the A42MX24-1PLG84I fits factory automation controllers, motor-control sequencers, and sensor-interface boards that mix modern 3.3V logic with legacy 5V field signals. The 2.5 kbits of dual-port SRAM supports buffering between a host processor and real-time control logic. The fast wide-decode D-modules implement address decoding and chip-select functions with CPLD-like speed, and the antifuse fabric is immune to configuration upsets that can affect SRAM FPGAs in electrically noisy industrial environments.
Recommended
ASIC Prototyping and Bridge Logic
Microchip positions MX as a reliable single-chip ASIC alternative, making the A42MX24 a natural fit for prototyping ASIC control blocks and implementing bus-bridge logic between incompatible interfaces. The 36K-gate capacity accommodates state machines, FIFOs (using the dual-port SRAM), and protocol adapters. During development, the wide-decode circuitry accelerates address comparison paths that dominate bridge designs. Because the MX antifuse device is one-time programmable, designers verify fully in simulation before programming production devices - the trade-off for the security and power-up determinism the family provides.
Recommended
Mil/Aerospace Program Sustainment
Actel (now Microchip) MX FPGAs are widely deployed in defense and aerospace platforms, and the industrial-grade A42MX24-1PLG84I supports sustainment of those long-life programs. The antifuse technology offers resistance to configuration corruption and a design-security profile valued in defense applications, while instant-on configuration suits power-critical avionics. Program offices facing obsolescence of the PLCC-84 device typically lifetime-buy or qualify the same die in alternative packages (TQG176, PQG208) already present on XAIPART, preserving the design database while changing only the assembly footprint.
Recommended
Test and Measurement Equipment
The A42MX24-1PLG84I serves as timing-control and interface logic in bench instruments, where its deterministic power-up (no configuration delay) and stable antifuse timing support repeatable measurements. The 912 logic cells implement trigger state machines and acquisition sequencers, while 2.5 kbits of dual-port SRAM provides small capture buffers. The PLCC-84 J-lead package is through-hole-repair friendly on the SMT lines used for low-volume instrument builds, and its -1 speed grade suits the moderate clock rates typical of instrument control logic.
Recommended
Communication and Networking Line Cards
Legacy telecom and networking line cards built around 5V backplanes use the A42MX24-1PLG84I for frame formatting, address decoding, and control-plane glue logic. Its 5V-compatible I/O connects directly to backplane transceivers of that era, and the wide-decode D-modules implement slot-address comparison at wire speed. The dual-port SRAM implements small FIFOs for rate adaptation between line-side and system-side clocks. Boards in installed-base sustainment keep the MX device to avoid requalification, sourcing Last Time Buy stock while the 10-week lead time permits planned replenishment.
Recommended
Recommended Products Summary
Engineering reference data for A42MX24-1PLG84I — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | A42MX24-2PLG84I | A42MX24-3PLG84I | A42MX24-TQG176M | A42MX36-2PQG208I |
|---|---|---|---|---|---|
| Package | 84-LCC (J-Lead, PLCC-84) | 84-LCC (PLCC-84) - same | 84-LCC (PLCC-84) - same | 176-TQFP (TQG176) - different | 208-PQFP (PQG208) - different |
| Brand | Microchip Technology (Actel/Microsemi) | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| System Gates | 36000 | 36000 | 36000 | 36000 | 54000 |
| Logic Cells | 912 | 912 | 912 | 912 | [DATA_NEEDED] |
| Speed Grade | -1 | -2 (faster) | -3 (fastest) | [DATA_NEEDED] | -2 |
| Supply Voltage | 3V~3.6V, 4.5V~5.5V | 3V~3.6V, 4.5V~5.5V | 3V~3.6V, 4.5V~5.5V | 3V~3.6V, 4.5V~5.5V | 3V~3.6V, 4.5V~5.5V |
| Operating Temperature | -40C to +85C (I grade) | -40C to +85C | -40C to +85C | M grade - [DATA_NEEDED] | -40C to +85C |
| Dual-Port SRAM | 2.5 kbits | 2.5 kbits | 2.5 kbits | 2.5 kbits | [DATA_NEEDED] |
| Lifecycle Status | Last Time Buy | Last Time Buy | Last Time Buy | Last Time Buy | Last Time Buy |
Key Differentiators
- Fastest verified drop-in speed grades available (vs A42MX24-2PLG84I / A42MX24-3PLG84I)
- Same die in multiple packages for footprint migration (vs A42MX24-TQG176M)
- Dual 3.3V/5V supply architecture (vs Modern FPGAs (e.g., PolarFire))
Design Notes
The MX family supports either 3.3V (3V~3.6V) or 5V (4.5V~5.5V) core/IO operation - do not power mid-rail values like 4.0V. Follow the power-up guidance for A42MX24 added to datasheet DS2316 (SAR 42096), which defines acceptable rail sequencing to avoid latch-up at startup. Decouple both VCC and VCCI rails with 0.1uF ceramic capacitors at each supply pin pair plus bulk 10uF, per standard MX power supply recommendations in DS2316.
MX antifuse devices are one-time programmable - there is no bitstream update. Fully verify the design in Libero simulation and timing analysis before programming production units. Also confirm the speed grade when substituting: a -1 device cannot be reprogrammed to -2/-3 timing, and systems designed with -1 margins must not be assembled with a slower unverified substitute. Check the PLCC-84 pinout table in DS2316 rather than reusing pin assignments from other PLCC-84 FPGAs.
The 84-LCC J-lead package has leads on all four sides with ~1.27mm pitch. Use the JEDEC PLCC-84 footprint with no-clean or water-wash compatible paste; J-leads need slightly more solder volume than gull-wing parts. Keep unused I/O configured per the datasheet recommendation (inputs with weak pull-up or grounded outputs) to avoid floating-node noise. The industrial -40C to +85C rating removes thermal derating concerns for most industrial enclosures, but verify junction temperature with family power-estimation tools for dense designs.
The dual-port SRAM and wide-decode D-modules are the fastest paths on the die - keep associated routing short in Libero floorplanning and match board trace lengths for clock and decode outputs. Because MX is a 0.45um CMOS device with modest edge rates, signal-integrity measures are mild: series termination on long backplane lines and a solid ground plane generally suffice.
Compliance Information
ROHS3 Compliant per Microchip USA product data. No AEC-Q100 automotive qualification data found for MX family.
