A42MX09-3PLG84 - 14K Gate FPGA, 84-PLCC | Microchip
MPN: A42MX09-3PLG84 β Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $32.5 | $32.50 |
| 10 | $29.9 | $299.00 |
| 100 | $27.4 | $2,740.00 |
| 500 | $25.1 | $12,550.00 |
| 1,000 | $22.8 | $22,800.00 |
Drop-in alternatives for A42MX09-3PLG84 β same package, pin-to-pin compatible. Different-package parts requiring PCB rework are excluded.
Quick Comparison Tool β Select alternative parts for side-by-side comparison:
A42MX09-3PLG84I
β Drop-Inπ Reference alternative (not in catalog)
A42MX09-FPLG84
β Drop-Inπ Reference alternative (not in catalog)
A42MX16-3PLG84
β Drop-Inβ In Stock
$1 / Unit
View Datasheet βA42MX16-1PLG84I
β Drop-Inβ In Stock
$1 / Unit
View Datasheet βA42MX16-1PLG84
β Drop-Inβ In Stock
$44.2 / Unit
View Datasheet βA42MX16-2PL84I
β Drop-Inπ Reference alternative (not in catalog)
A42MX09-3PLG84 Maximum Ratings & Electrical Characteristics
| Family | MX (42MX) |
| System Gates | 14000 |
| Logic Cells | 336 |
| User I/O | 72 |
| Toggle Rate (core) | 177 MHz |
| Toggle Rate (I/O) | 296 MHz |
| Process Technology | 0.45 um |
| Supply Voltage | 3.3 V / 5 V |
| Speed Grade | -3 |
| Package | 84-Pin PLCC (LCC J-Lead, PLG84) |
| Mounting Type | Surface Mount |
| Configuration Type | Antifuse (non-volatile, live at power-up) |
| Operating Temperature | [DATA_NEEDED: operating temperature range] |
| Thermal Resistance | [DATA_NEEDED: theta JA] |
| RoHS Status | [DATA_NEEDED: RoHS status] |
| MSL Level | [DATA_NEEDED: moisture sensitivity level] |
A42MX09-3PLG84 Pin Configuration
| Pin 1 | IO β User I/O pin (PLCC-84 MX device, I/O names assigned in Designer tool) [DATA_NEEDED: exact per-pin names from datasheet] |
| Pin 12 | VCC β Core/I/O supply 3.3V or 5V [DATA_NEEDED: exact pin assignment] |
| Pin 42 | GND β Ground [DATA_NEEDED: exact pin assignment] |
| Pin 30 | CLK β Dedicated clock input [DATA_NEEDED: exact pin assignment] |
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
A42MX09-3PLG84 is suitable for 6 applications: Legacy PLD Consolidation, Industrial Control Systems, Aerospace & Defense Legacy Upgrades, Mixed 3.3V/5V System Bridging, Test & Measurement Equipment, Communication & Networking Interface Cards.
Legacy PLD Consolidation
The MX family is explicitly positioned by Microchip as a platform for integrating legacy PLDs into a single low-cost device. With 14K gates, 336 cells, and 5V-tolerant I/O, the A42MX09-3PLG84 can absorb multiple TTL/FACT glue-logic devices and older PAL/GAL arrays into one antifuse FPGA. Because configuration is non-volatile and live at power-up, the consolidated design behaves like hard-wired logic with no boot delay - critical for systems replacing discrete 5V logic where startup behavior must be identical.
Recommended
Industrial Control Systems
In factory automation and motor-control peripheral boards, the A42MX09-3PLG84 provides deterministic, glitch-free logic with 177 MHz core toggle rates and direct 5V I/O compatibility for sensors and actuators designed around TTL levels. The antifuse configuration cannot be corrupted by noise or brownouts, unlike SRAM FPGAs, making it well suited to electrically harsh industrial environments. Its 72 user I/O handles encoder, limit-switch, and relay-driver interfacing without external buffering in many designs.
Recommended
Aerospace & Defense Legacy Upgrades
Microsemi (now Microchip) MX FPGAs are widely used in defense sustainment programs where 5V systems must remain in service for decades. The A42MX09's one-time-programmable antifuse technology is resistant to configuration upsets, an important reliability attribute in high-radiation or high-vibration environments. When a 14K-gate PLCC-84 upgrade path is required, the extended-temperature A42MX09-3PLG84I and higher-density A42MX16 siblings in the same footprint preserve board-level qualification with minimal redesign.
Recommended
Mixed 3.3V/5V System Bridging
The 3.3V/5V dual supply operation of the MX architecture makes the A42MX09-3PLG84 a natural bridge between modern 3.3V microcontrollers and 5V legacy peripherals. Because the device natively tolerates 5V I/O, level-shifting ICs can often be eliminated, reducing BOM cost and failure points. Designers place the FPGA between a 3.3V host bus and 5V backplanes, using its 296 MHz I/O toggle capability for fast strobes while maintaining TTL thresholds on the 5V side.
Recommended
Test & Measurement Equipment
Bench instruments and ATE fixtures frequently need custom sequencers, counters, and bus controllers implemented in reprogrammable logic. The A42MX09-3PLG84's 177 MHz core speed supports high-resolution timing generation, while the PLCC-84 socket-friendly J-lead package allows field replacement in instrument service. Antifuse one-time programming also provides a tamper-resistant configuration for calibration logic, since the programmed pattern cannot be read out or altered like SRAM bitstreams.
Recommended
Communication & Networking Interface Cards
For industrial networking cards and protocol bridges, the A42MX09-3PLG84 implements state machines for legacy fieldbus protocols, serial framing, and address decoding. Its 72 I/O pins can terminate parallel data buses directly, and the 296 MHz I/O toggle rate comfortably covers interface clocking requirements well above typical fieldbus rates. The 5V-compatible I/O simplifies interfacing with RS-485 transceivers and optocoupled inputs common in installed industrial networks.
Recommended
Recommended Products Summary
Engineering reference data for A42MX09-3PLG84 β comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | A42MX09-3PLG84I | A42MX09-FPLG84 | A42MX16-3PLG84 | A42MX16-1PLG84I |
|---|---|---|---|---|---|
| Package | 84-PLCC (PLG84) | 84-PLCC - same | 84-PLCC - same | 84-PLCC - same | 84-PLCC - same |
| Brand | Microchip Technology (Microsemi) | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| System Gates | 14K | 14K | 14K | 24K | 24K |
| Logic Cells | 336 | 336 | 336 | [DATA_NEEDED: MX16 cell count] | [DATA_NEEDED: MX16 cell count] |
| User I/O | 72 | 72 | 72 | [DATA_NEEDED: MX16 PLG84 I/O count] | [DATA_NEEDED: MX16 PLG84 I/O count] |
| Speed Grade | -3 | -3 | F variant | -3 | -1 (slower) |
| Temperature Grade | Commercial | Industrial | [DATA_NEEDED] | Commercial | Industrial |
| 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 |
Key Differentiators
- Same die, extended temperature option (vs A42MX09-3PLG84I)
- Cost-optimized density point (vs A42MX16-3PLG84)
- Non-volatile antifuse configuration (vs SRAM FPGAs (e.g., Xilinx XC4000-class))
Design Notes
The A42MX09-3PLG84 operates from 3.3V/5V supplies on the MX 0.45um architecture. Decouple each VCC pin with 0.1uF ceramic plus a bulk 10uF capacitor. Antifuse FPGAs draw a static operating current with no inrush-related configuration surge (unlike SRAM FPGAs), simplifying power supply design, but verify current limits in the MX datasheet power tables for your logic utilization.
PLCC-84 J-lead packages tolerate slight coplanarity variation but should be reflow-soldered on a well-designed footprint; for socketed legacy retrofits, use a matched PLCC socket. Provide dedicated thermal vias or ground pour under the device. Because there is no exposed pad, thermal relief relies entirely on package convection - keep continuous power dissipation within datasheet limits.
Antifuse devices are ONE-TIME programmable: a design error cannot be fixed in the field. Always complete full functional simulation in Libero/Designer and reserve a bench-validation unit before committing production programming. Also note that all MX-family replacements (e.g., A42MX16 in the same PLG84 footprint) require recompilation and re-verification of pin assignments - the footprint matches but the bitstream does not transfer.
Compliance Information
Compliance data not present in provided web data. PLCC-84 mature-process parts may be exempt from certain RoHS requirements (lead frames) - verify with Microchip product page.
