A42MX36-PQG208IX39 - 54K Gate 5V FPGA PQFP-208 | Microchip
MPN: A42MX36-PQG208IX39 ✓ Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $78.5 | $78.50 |
| 10 | $72.2 | $722.00 |
| 100 | $65.9 | $6,590.00 |
| 500 | $59.4 | $29,700.00 |
| 1,000 | $54.8 | $54,800.00 |
Drop-in alternatives for A42MX36-PQG208IX39 — 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:
A42MX36-PQG208I
✅ Drop-In✓ In Stock
$55 / Unit
View Datasheet →A42MX36-2PQG208I
✅ Drop-In✓ In Stock
$1 / Unit
View Datasheet →A42MX36-PQG208A
✅ Drop-In✓ In Stock
$1 / Unit
View Datasheet →A42MX36-1PQG208
✅ Drop-In✓ In Stock
$45.3 / Unit
View Datasheet →A42MX36-3PQG208I
✅ Drop-In✓ In Stock
Contact for price
View Datasheet →A42MX36-FPQG208
✅ Drop-In✓ In Stock
$39.8 / Unit
View Datasheet →A42MX36-PQG208IX39 Maximum Ratings & Electrical Characteristics
| Logic Family | MX (Actel 42MX) |
| Equivalent Gates | 54000 |
| Configurable Logic Blocks (CLBs) | 1184 |
| Logic Cells | 2438 |
| Maximum Clock Frequency | 72 MHz |
| Combinatorial Delay per CLB | 2.7 ns |
| Process Technology | 0.45 um CMOS |
| Core Supply Voltage | 5 V |
| User I/O | 176 |
| Programmable Connections | 2560 |
| Embedded Memory | Dual-port SRAM blocks (FIFO/LIFO optimized) |
| PCI Compliance | PCI specification version 2.1 (selectable output drives) |
| Low Power Mode Current | Below 500 uA |
| Package | 208-pin PQFP (PQFP208) |
| Mounting Type | Surface Mount |
| Temperature Grade | Industrial (IX39 suffix) |
| Programming Technology | One-time programmable antifuse |
A42MX36-PQG208IX39 208-pin pqfp (pqfp208) Pin Configuration Guide
Complete pinout information for A42MX36-PQG208IX39 (208-pin pqfp (pqfp208) 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 A42MX36-PQG208IX39.
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
A42MX36-PQG208IX39 is suitable for 6 applications: Legacy PLD and ASIC Consolidation, PCI Bus Interface Logic, Industrial Control and Automation, Military and Aerospace Prototyping, High-Speed Data Buffering and FIFO Applications, Obsolescence Management and Lifetime-Buy Designs.
Legacy PLD and ASIC Consolidation
The A42MX36-PQG208IX39 is purpose-built for consolidating multiple legacy PLDs, GALs, and small ASICs into a single device. Its 54,000-gate capacity and 1184 CLBs absorb the combined logic of several 22V10-class devices, while the 5.0 V architecture natively interfaces with older 5 V buses and peripherals that modern 3.3 V FPGAs cannot drive directly. Because the MX family is one-time programmable (antifuse), the consolidated design gains security and latch-up immunity without configuration-loading hardware. In a typical consolidation, the 176 user I/O replace multiple glue-logic packages, cutting board area and BOM count while Microchip's long-term manufacturing commitment protects the supply for the remaining product lifecycle.
Recommended
PCI Bus Interface Logic
A42MX24 and A42MX36 devices offer selectable PCI output drives enabling 100% compliance with version 2.1 of the PCI specification, per the 40MX/42MX families datasheet. The A42MX36-PQG208IX39's 5 V tolerant I/O and 72 MHz maximum toggle frequency cover the 33 MHz PCI clock domain with ample timing margin; the 2.7 ns CLB combinatorial delay supports address/data steering and parity logic within PCI setup budgets. Designers typically implement the PCI state machine and target/initiator FIFOs using the embedded dual-port SRAM blocks, buffering bus transfers without external FIFO ICs. This makes the device a glueless 5 V PCI bridge solution for industrial backplane and legacy server platforms.
Recommended
Industrial Control and Automation
The industrial IX39 temperature screening makes the A42MX36-PQG208IX39 appropriate for factory automation controllers, motor-drive sequencing logic, and machine-state machines exposed to wide ambient ranges. The 54K-gate fabric integrates interlock logic, encoder interfaces, and communication glue logic that previously occupied multiple SSI/MSI devices. Its low-power mode reduces supply current below 500 uA by disabling all I/O, which suits standby paths in energy-conscious installations. The surface-mount 208-pin PQFP withstands typical industrial reflow assembly, and the antifuse fabric's immunity to configuration upset (no external boot flash) increases uptime in electrically noisy factory environments where SRAM-FPGAs would require scrubbing circuitry.
Recommended
Military and Aerospace Prototyping
The MX family is fully tested over automotive and military temperature ranges, and the largest member, A42MX36, is available in CQ208 and CQ256 ceramic packages screened to MIL-STD-883 levels. Critically, the datasheet confirms CQ208 and PQ208 devices are pin-compatible, so engineers can prototype flight hardware on the plastic A42MX36-PQG208IX39 and convert to the ceramic MIL-screened device without PCB changes. The 5 V I/O directly drives legacy mil-spec 5 V buses, and the antifuse one-time programming provides design-security and radiation-tolerant-friendly single-event-upset behavior compared to SRAM fabrics, which is why Actel-derived MX devices persist in defense obsolescence-management programs.
Recommended
High-Speed Data Buffering and FIFO Applications
The A42MX36's embedded dual-port SRAM blocks provide an optimal solution for high-speed buffered applications requiring FIFO and LIFO queues, according to the Microsemi 42MX datasheet (DS2136). Using the ACTgen Macro Builder in Microsemi designer software, engineers instantiate FIFO/LIFO macros directly from the fabric, moving the 72 MHz datapath buffering on-chip. This eliminates external FIFO memories, reduces latency, and frees the 176 I/O for data-width expansion. Typical systems include image-line buffers, communication packet staging, and ADC sample streaming where the 2.7 ns CLB delay supports tight datapath pipelines between the SRAM blocks and user logic.
Recommended
Obsolescence Management and Lifetime-Buy Designs
Programs maintaining legacy boards with discontinued Actel or early-Microsemi devices use the A42MX36-PQG208IX39 as a last-time-buy and lifetime-purchase target because Microchip actively sustains MX manufacturing, even qualifying an alternate assembly site per product change notification DSNO-28BNDI820. Designers re-map retired PLD netlists into the 54K-gate fabric using Libero/Designer software, and the 208-pin PQFP footprint matches many legacy Actel packages. The family's active status, stable 0.45 um process, and continued datasheet support (40MX/42MX families datasheet v16) make it a low-risk landing zone that extends program life by a decade or more without redesign.
Recommended
Recommended Products Summary
Engineering reference data for A42MX36-PQG208IX39 — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | A42MX36-PQG208I | A42MX36-2PQG208I | A42MX36-PQG208A | A42MX36-FPQG208 |
|---|---|---|---|---|---|
| Package | 208-pin PQFP (PQFP208) | 208-pin PQFP - same | 208-pin PQFP - same | 208-pin PQFP - same | 208-pin PQFP - same |
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Equivalent Gates | 54000 | 54000 | 54000 | 54000 | 54000 |
| CLBs / Logic Cells | 1184 / 2438 | 1184 / 2438 | 1184 / 2438 | 1184 / 2438 | 1184 / 2438 |
| Max Clock Frequency | 72 MHz | 72 MHz | Higher (-2 speed grade) | 72 MHz | 44 MHz |
| Combinatorial Delay (CLB) | 2.7 ns | 2.7 ns | Lower (-2 speed grade) | 2.7 ns | 3.8 ns |
| Temperature Screening | Industrial (IX39) | Industrial (I) | Industrial (I) | Automotive (A) | Standard |
| User I / Programmable Connections | 176 / 2560 | 176 / 2560 | 176 / 2560 | 176 / 2560 | 176 / 2560 |
Key Differentiators
- Higher speed grade than the F variant (vs A42MX36-FPQG208)
- Native 5.0 V I/O architecture (vs A42MX36-2PQG208I (equivalent) but decisive vs modern 3.3 V FPGAs)
- Industrial IX39 screening on the largest family member (vs A42MX36-PQG208A)
- Pin-compatible ceramic migration path (vs A42MX36-1PQG208)
Design Notes
The MX family operates from a 5.0 V supply core with 5 V tolerant I/O. Budget supply current based on toggle activity and I/O loading; in standby, enable the low-power mode which disables all inputs and outputs and reduces current below 500 uA per the datasheet. Provide solid 0.1 uF decoupling per power pin group plus bulk 10 uF at the board entry. Since the antifuse fabric draws no configuration current at power-up (unlike SRAM FPGAs), inrush is dominated by I/O charging, simplifying supply sequencing.
At 72 MHz with 5 V CMOS output drives, keep trace lengths on fast output clocks and PCI-class signals under a few inches or add small series resistors (22-33 ohm) to control ringing. Enable the selectable PCI output drives only for PCI bus pins; full-strength drives on non-PCI nets increase ground bounce in the PQFP. Use the wide ground connections of the 208-pin package and verify return paths, since 5 V swings into typical 10-15 pF loads generate significantly higher di/dt than 3.3 V designs.
MX devices are one-time programmable - there is no field reconfiguration. Lock your design and verify timing closure in Microsemi Designer software before submitting to programming, and keep a golden programming file archived. When substituting across speed grades, remember the FPQG208 variant is 44 MHz / 3.8 ns versus 72 MHz / 2.7 ns for the PQG208IX39; blindly swapping suffixes can break timing. Finally, verify the IX39 screening suffix is actually required - if standard industrial I grade suffices, the more widely stocked A42MX36-PQG208I shortens lead times.
The PQFP-208 uses a 0.5 mm lead pitch; specify a solder-mask-defined footprint per IPC guidelines and inspect with 5-10X magnification for lead coplanarity after reflow. The CQ208 ceramic package is pin-compatible with PQ208, so design the footprint once for both. Avoid routing under the package center on outer layers if you later migrate to ceramic with a cavity lid; provide at least two rows of test vias around the perimeter for bed-of-nails production testing of the 176 user I/O nets.
Compliance Information
The related A42MX36-PQG208I is listed by Mouser as LEAD FREE; RoHS/REACH status of the IX39 suffix was not stated in the provided data and requires confirmation from Microchip product documentation.
