A42MX16-3PLG84 - 24K Gate 5V FPGA, 84-PLCC | Microchip
MPN: A42MX16-3PLG84 ✓ Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $1 | $1.00 |
| 10 | $1 | $10.00 |
| 100 | $1 | $100.00 |
| 500 | $1 | $500.00 |
| 1,000 | $1 | $1,000.00 |
Drop-in alternatives for A42MX16-3PLG84 — 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:
A42MX16-2PLG84I
✅ Drop-In✓ In Stock
$30.8 / Unit
View Datasheet →A42MX16-1PLG84
✅ Drop-In✓ In Stock
$44.2 / Unit
View Datasheet →A42MX16-FPLG84
✅ Drop-In✓ In Stock
$21.5 / Unit
View Datasheet →A42MX16-3PLG84 Maximum Ratings & Electrical Characteristics
| Family | MX (42MX) |
| System Gates | 24,000 |
| Logic Cells | 608 |
| User I/O | 72 |
| Speed Grade | -3 |
| Internal Clock Frequency | 142 MHz |
| I/O Toggle Rate | 237 MHz |
| Core Voltage | 5 V |
| I/O Voltage Support | 3.3 V / 5 V |
| Process Technology | 0.45 um |
| Programmability | Antifuse (one-time programmable) |
| JTAG / Boundary Scan | IEEE 1149.1 compliant |
| Package | 84-LCC (J-Lead, PLCC) |
| Package Dimensions | 29.3 x 29.3 x 4.4 mm |
| Mounting Type | Surface Mount |
| Operating Temperature (commercial) | 0C to +70C |
| Operating Temperature (industrial, -I suffix) | -40C to +85C |
| RoHS Status | Compliant (per Newark) |
A42MX16-3PLG84 Pin Configuration
| Pin 1 | IO — User configurable I/O (see DS2316 for full 84-pin map) |
| Pin 11 | VCC — 5V core/IO supply |
| Pin 22 | GND — Ground |
| Pin 30 | CLKA/H — Dedicated global clock input (chip) |
| Pin TCK | TCK — JTAG test clock (IEEE 1149.1) |
| Pin TDI | TDI — JTAG test data in |
| Pin TDO | TDO — JTAG test data out |
| Pin TMS | TMS — JTAG test mode select |
| Pin VPP | VPP — Programming voltage supply (antifuse programming) |
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
A42MX16-3PLG84 is suitable for 6 applications: Industrial Control Systems, Legacy PLD Consolidation, Military and Avionics Legacy Upgrades, Telecommunications Line Cards, Test and Measurement Equipment, Security and ASIC Prototyping.
Industrial Control Systems
The A42MX16-3PLG84's 5V-tolerant I/O and -40C to +85C capability (in -I variants) make it well suited to industrial PLC I/O modules, motor control interface logic, and factory floor equipment that still runs 5V signaling. Its 24K gates and 608 logic cells consolidate address decoders, state machines, and bus interfaces that previously occupied multiple PAL/GAL devices. The antifuse fabric is immune to configuration upsets from electrically noisy industrial environments, an advantage over SRAM FPGAs, and the PLCC J-lead package withstands vibration better than fine-pitch BGAs.
Recommended
Legacy PLD Consolidation
Microchip markets the MX family explicitly as a platform for integrating legacy PLDs into a single low-cost device. Boards carrying multiple 22V10s, GALs, or small CPLDs can migrate their combinational and sequential logic into the A42MX16's 608 cells, cutting BOM count and power while keeping the same 5V board environment. Because the device is one-time programmable and boots instantly with no external configuration memory, the consolidated design retains the deterministic power-up behavior of the original PLDs - important for safety interlocks and legacy replacement programs.
Recommended
Military and Avionics Legacy Upgrades
Antifuse FPGAs from the Microsemi (now Microchip) line have a decades-long heritage in defense and avionics where configuration upsets from radiation and single-event effects matter. The A42MX16-3PLG84's instant-on, no-config-device operation and one-time programmability eliminate the SEU vulnerability of SRAM configuration memory. Designers upgrading legacy line-replaceable units can maintain the original 5V interfaces and PLCC sockets while refreshing obsolete PLD content, and Microchip's long-term lifecycle support protects multi-decade platform sustainment programs.
Recommended
Telecommunications Line Cards
The 237 MHz I/O toggle rate and 142 MHz internal performance of the -3 speed grade support telecom backplane glue logic, framing logic, and multiplexing functions on legacy line cards. Dual 3.3V/5V I/O banks let one device bridge older 5V backplane signaling with newer 3.3V on-card logic, eliminating discrete level translators. IEEE 1149.1 JTAG boundary scan enables board-level production test of the dense interconnect typical of telecom shelf assemblies, and the 84-PLCC package supports the rework-friendly assembly flow used in card repair depots.
Recommended
Test and Measurement Equipment
Bench instruments and automated test fixtures frequently need flexible timing, sequencing, and interface logic at moderate densities - a match for the A42MX16's 24K gates. The deterministic, instantly-on antifuse configuration ensures the instrument is functional the moment power is applied, without configuration download latency that could disturb measurement timing. Its 5V I/O compatibility connects directly to TTL-level test points and legacy instrument buses, and the -3 speed grade's 237 MHz toggle capability covers counter and pattern-generator roles in fixture designs.
Recommended
Security and ASIC Prototyping
Microchip positions MX as a reliable single-chip ASIC alternative. Before committing to an ASIC mask set, designers can implement and validate the control logic in the A42MX16's antifuse fabric, whose one-time programming mimics the fixed, tamper-resistant character of a masked gate array - useful for secure designs where SRAM FPGA bitstreams are a liability. The 0.45 um process and 5V operation also emulate the electrical behavior of older gate-array nodes, giving more representative prototype timing than modern low-voltage FPGAs provide for legacy interface verification.
Recommended
Recommended Products Summary
Engineering reference data for A42MX16-3PLG84 — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | A42MX16-2PLG84I | A42MX16-1PLG84 | A42MX16-3VQG100 |
|---|---|---|---|---|
| Package | 84-PLCC (J-Lead) | 84-PLCC (J-Lead) - same | 84-PLCC (J-Lead) - same | 100-VQFP - different |
| Brand | Microchip Technology (Microsemi) | Microchip Technology | Microchip Technology | Microchip Technology |
| System Gates | 24,000 | 24,000 | 24,000 | 24,000 |
| Speed Grade | -3 (fastest) | -2 | -1 | -3 |
| Operating Temperature | 0C to +70C (commercial) | -40C to +85C | 0C to +70C | 0C to +70C |
| User I/O | 72 | 72 | 72 | [DATA_NEEDED] (higher, VQFP-100) |
| Supply Voltage | 5V core, 3.3V/5V I/O | 5V core, 3.3V/5V I/O | 5V core, 3.3V/5V I/O | 5V core, 3.3V/5V I/O |
| Drop-in Compatible | - | Yes - same 84-PLCC pinout | Yes - same 84-PLCC pinout | No - package/footprint differ |
Key Differentiators
- 5V-tolerant architecture (vs Modern SRAM FPGAs (e.g., Artix-7, PolarFire))
- Faster speed grade in same pinout (vs A42MX16-1PLG84)
- Instant-on antifuse vs reprogrammability trade-off (vs A42MX16-3VQG100)
Design Notes
The MX fabric operates at 5.0V with 3.3V/5V-selectable I/O banks. Provide a solid 5V rail with at least 0.1 uF decoupling per VCC pin plus bulk capacitance at the board level. The VPP pin (antifuse programming voltage) must be properly handled per the DS2316 programming specification during manufacturing; in normal operation follow the datasheet biasing. Do not hot-plug the VPP rail during functional operation.
Antifuse FPGAs are one-time programmable - there is no rework after programming. Complete full functional simulation and timing closure in Microchip Libero/Designer at the -3 speed grade before committing silicon. Also confirm you truly need the -3 grade; if your timing margin is generous, the -1 or -2 grades (e.g., A42MX16-1PLG84, A42MX16-2PLG84I) reduce cost, and the -2PLG84I adds industrial temperature range.
The 84-PLCC J-lead package (29.3 x 29.3 mm) requires a PLCC-84 land pattern per JEDEC outline; verify footprint versus socket choice - J-leads accommodate both solder-down and zero-insertion-force sockets, useful for prototype programming. Route global clock signals to the dedicated hard-wired clock pins rather than general I/O to use the low-skew clock network and meet 142 MHz internal timing.
Compliance Information
Newark lists the A42MX16-3PLG84 as RoHS Compliant: Yes. REACH, halogen-free, and conflict-minerals status not stated in verified data.
