A42MX16-2PLG84 - 24K Gate FPGA, 84-PLCC | Microchip
MPN: A42MX16-2PLG84 ✓ Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $24.5 | $24.50 |
| 10 | $22.1 | $221.00 |
| 100 | $19.8 | $1,980.00 |
| 500 | $17.6 | $8,800.00 |
| 1,000 | $15.4 | $15,400.00 |
Drop-in alternatives for A42MX16-2PLG84 — 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:
A42MX16-1PLG84
✅ Drop-In✓ In Stock
$44.2 / Unit
View Datasheet →A42MX16-3PLG84
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$1 / Unit
View Datasheet →A42MX16-2PLG84I
✅ Drop-In✓ In Stock
$30.8 / Unit
View Datasheet →A42MX09-PLG84M
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Contact for price
View Datasheet →A42MX24-3PLG84
✅ Drop-In✓ In Stock
$44.2 / Unit
View Datasheet →A42MX24-2PLG84I
✅ Drop-In✓ In Stock
$55.4 / Unit
View Datasheet →A42MX16-2PLG84 Maximum Ratings & Electrical Characteristics
| Family | 42MX FPGA |
| System Gates | 24000 gates |
| Configurable Logic Blocks (CLBs) | 608 |
| Number of I/O | 72 |
| Speed Grade | -2 |
| Maximum Clock Frequency | 117 MHz |
| Process Technology | 0.45 um CMOS |
| Supply Voltage | 3.3 V / 5 V |
| Package | 84-LCC (J-Lead) PLCC-84 |
| JESD-30 Code | S-PQCC-J84 |
| Mounting Type | Surface Mount |
| Programmable Type | In-System Programmable |
| JTAG Support | IEEE 1149.1 (family members 42MX24/42MX36) |
| RoHS Status | Lead Free |
| Operating Temperature | [DATA_NEEDED: operating temperature range] |
| Moisture Sensitivity Level | [DATA_NEEDED: MSL level] |
A42MX16-2PLG84 Pin Configuration
| Pin 1 | IO — User I/O (PLG84 pin assignments per DS2136 datasheet - verify exact pin map in datasheet Table) |
| Pin 10 | VCC — Core supply (3.3V or 5V per configuration) |
| Pin 21 | GND — Ground |
| Pin 42 | IO/VREF — User I/O or reference voltage |
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
A42MX16-2PLG84 is suitable for 6 applications: Legacy PLD Consolidation, Industrial Control Systems, Obsolescence Management for Communications Equipment, Glue Logic Integration, Military and High-Reliability Programs, Test and Measurement Instrument Sustainment.
Legacy PLD Consolidation
The MX family was explicitly designed by Microchip as a single-chip ASIC alternative with a 5.0V-tolerant architecture, making the A42MX16-2PLG84 ideal for replacing multiple legacy 5V PLDs, GALs, and SSI/MSI logic devices on aging boards. With 24,000 gates and 608 CLBs, it absorbs dozens of older devices into one IC, cutting board area, BOM cost, and solder joints. The 72 user I/O support both 3.3V and 5V signaling levels, so interfacing with unchanged 5V-era peripherals requires no level shifting.
Recommended
Industrial Control Systems
Industrial controllers benefit from the A42MX16-2PLG84's 5V/3.3V dual-supply I/O tolerance and mature, field-proven MX architecture. The 117 MHz maximum toggle frequency on the -2 grade comfortably handles state machines, motor sequencing logic, and interface bridging in PLC I/O cards. The 84-PLCC J-lead package withstands industrial assembly processes and simplifies rework on through-hole-transition boards; the industrial-temperature A42MX16-2PLG84I variant extends operation for harsh enclosures.
Recommended
Obsolescence Management for Communications Equipment
Telecom and datacom systems from the 1990s frequently used Actel MX FPGAs, and the Microchip-branded A42MX16-2PLG84 is the identical silicon continuing that supply. It replaces discontinued Actel/Microsemi A42MX16 stock without design changes - same footprint, pinout, and timing model. Design teams can port existing Libero/Designer projects directly, making this the lowest-risk sourcing path for sustainment of fielded switching, transmission, and test equipment.
Recommended
Glue Logic Integration
Board-level glue logic - bus transceivers, decoders, address latches, wait-state generators - maps efficiently into the 608 CLBs of the A42MX16-2PLG84. Consolidating discrete 74-series logic into one FPGA shortens propagation paths, reduces timing skew, and frees PCB area. The 72 I/O provide enough pins for a full 16-bit or 32-bit bus interface with control signals, and the 5V-tolerant architecture lets the FPGA sit directly on legacy TTL-compatible buses without buffers.
Recommended
Military and High-Reliability Programs
The MX family has a long heritage in military and avionics sustainment, with Microchip continuing supply of temperature-qualified and M-suffix variants in the same 84-PLCC footprint. The A42MX09-PLG84M provides a military-grade flow for programs requiring that designation, while the standard A42MX16-2PLG84 serves commercial-temperature high-reliability builds. Long product lifecycles and documented revision history make the MX line a low-risk choice for fielded platforms needing decades of spares.
Recommended
Test and Measurement Instrument Sustainment
Bench instruments and automated test equipment built around 5V logic rely on the A42MX16-2PLG84 for controller-interface logic, timing generators, and scan chains. The -2 speed grade's 117 MHz toggle capability supports counter/timer and trigger logic, while the J-lead PLCC package allows socketed prototyping during instrument repair and recalibration. Using the Microchip-continued part avoids board respins on instruments whose analog front ends remain fully serviceable.
Recommended
Recommended Products Summary
Engineering reference data for A42MX16-2PLG84 — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | A42MX16-1PLG84 | A42MX16-3PLG84 | A42MX16-2PLG84I | A42MX24-3PLG84 | A42MX09-PLG84M |
|---|---|---|---|---|---|---|
| Package | 84-PLCC (PLG84) | 84-PLCC - same | 84-PLCC - same | 84-PLCC - same | 84-PLCC - same | 84-PLCC - same |
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| System Gates | 24,000 | 24,000 | 24,000 | 24,000 | 36,000 | 9,000 |
| Speed Grade | -2 (117 MHz) | -1 (slower) | -3 (faster) | -2 (117 MHz) | -3 | -M grade |
| CLBs | 608 | 608 | 608 | 608 | [DATA_NEEDED: MX24 CLB count] | [DATA_NEEDED: MX09 CLB count] |
| User I/O | 72 | 72 | 72 | 72 | 69 | 69 |
| Temperature Range | Commercial [DATA_NEEDED: exact range] | Commercial | Commercial | Industrial | Commercial | Military (M) |
| Supply Voltage | 3.3 V / 5 V | 3.3 V / 5 V | 3.3 V / 5 V | 3.3 V / 5 V | 3.3 V / 5 V | 3.3 V / 5 V |
Key Differentiators
- Balanced mid-range density and cost (vs A42MX24-3PLG84)
- Faster timing than -1 grade at modest premium (vs A42MX16-1PLG84)
- Industrial-temperature availability on identical silicon (vs A42MX16-2PLG84I)
Design Notes
The MX architecture uses a dual 3.3V/5V supply scheme. Verify per-bank I/O voltage assignments against DS2136 before layout, and decouple each VCC pin pair with 0.1uF ceramic capacitors placed within 2 mm of the package, plus one bulk 10uF per rail. Because PLCC packages have relatively high inductance leads, a solid ground connection on multiple GND pins reduces ground bounce when many 5V-tolerant outputs switch simultaneously.
The 84-PLCC J-lead footprint requires the JEDEC PLCC-84 land pattern with leads protruding beyond the body. For socketed prototypes use a PLCC-84 socket, but note sockets add inductance and can degrade signal integrity above roughly 50 MHz toggle rates. For production, solder directly to the board and provide at least one full GND plane under the device for return-current integrity.
Do not mix speed grades without re-running timing analysis: the -1 grade has slower clock-to-out and setup times than the -2. Also confirm that your design's programming flow matches the MX fuse/antifuse programming model supported by Microchip Libero/Designer tools, and verify long-term supply commitments since MX is a mature product line - secure lifetime-buy quotes for long-lifecycle programs.
Compliance Information
Distributor data (PCB Electronics) lists A42MX16-2PLG84 as LEAD FREE. REACH and halogen-free status not stated in provided data.
