A42MX24-TQG176A - 36K Gate 5V FPGA, 176-TQFP | Microchip
MPN: A42MX24-TQG176A ✓ Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $62.5 | $62.50 |
| 10 | $58.1 | $581.00 |
| 100 | $52.4 | $5,240.00 |
| 500 | $47.9 | $23,950.00 |
| 1,000 | $43.2 | $43,200.00 |
Drop-in alternatives for A42MX24-TQG176A — 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-TQG176M
✅ Drop-In✓ In Stock
$54.9 / Unit
View Datasheet →A42MX24-1TQG176I
✅ Drop-In✓ In Stock
$23.9 / Unit
View Datasheet →A42MX24-1TQG176X39
✅ Drop-In📋 Reference alternative (not in catalog)
A42MX16-3TQG176
✅ Drop-In✓ In Stock
$1 / Unit
View Datasheet →A42MX09-TQG176A
✅ Drop-In✓ In Stock
$32.1 / Unit
View Datasheet →A42MX24-TQG176A Maximum Ratings & Electrical Characteristics
| Family | MX (42MX) |
| System Gates | 36000 |
| Logic Cells | 1890 |
| Configurable Logic Blocks (CLBs) | 912 |
| User I/O | 150 |
| Supply Voltage | 5.0 V |
| Process Technology | CMOS |
| Programmable Type | Antifuse (one-time programmable, non-volatile) |
| Maximum Clock Frequency | 105.5 MHz |
| Package | 176-TQFP (TQG176) |
| Package Dimensions | [DATA_NEEDED: package body dimensions] |
| Mounting Type | Surface Mount |
| Operating Temperature | [DATA_NEEDED: operating temperature range] |
| Configuration | Single-chip, no external configuration device |
| Lead Free | Yes (G suffix) |
| RoHS Status | [DATA_NEEDED: RoHS status] |
| Moisture Sensitivity Level | [DATA_NEEDED: MSL level] |
A42MX24-TQG176A Pin Configuration
| Pin 1 | IO — User input/output (assignable via Designer software) |
| Pin 23 | VCC — 5.0 V core supply |
| Pin 44 | GND — Ground |
| Pin 67 | IO — User input/output (assignable) |
| Pin 88 | VCC — 5.0 V supply pin |
| Pin 90 | GND — Ground pin |
| Pin 132 | IO — User input/output (assignable) |
| Pin 176 | IO — User input/output (assignable) |
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-TQG176A is suitable for 6 applications: Legacy 5V Industrial Control, Aerospace and Defense Legacy Sustainment, PLD and ASIC Prototyping Consolidation, Bus Interface and Glue Logic, Medical Equipment Legacy Boards, Security-Sensitive Embedded Systems.
Legacy 5V Industrial Control
The A42MX24-TQG176A fits industrial control boards still running 5V logic, where its native 5.0V architecture eliminates level shifters entirely. With 36,000 gates and 150 user I/Os, it consolidates multiple PLDs, PALs, and glue-logic devices into a single antifuse chip that powers up instantly with no configuration device. Placed on a 5V backplane with standard 74-series interfaces, the 105.5 MHz performance ceiling comfortably covers bus decoding, state machines, and interrupt handling while reducing board area and BOM count.
Recommended
Aerospace and Defense Legacy Sustainment
Actel/Microsemi MX antifuse FPGAs have a long history in aerospace and defense programs because their one-time-programmable fabric is immune to configuration upsets and offers inherent bitstream security. The A42MX24-TQG176A allows program sustainment teams to keep producing qualified 5V boards without redesign. Its non-volatile single-chip operation removes configuration memory - a common radiation and security concern - while the 176-TQFP package supports straightforward reflow assembly in low-to-medium volume production runs.
Recommended
PLD and ASIC Prototyping Consolidation
The MX family is positioned by Microchip as a single-chip ASIC alternative for high-volume designs. Designers use the A42MX24-TQG176A to consolidate multi-PLD logic into one 36K gate device before committing to an ASIC mask set, or as a low-risk bridging part during ASIC lead times. The antifuse fabric's deterministic timing simplifies timing closure at modest clock rates, and the absence of external configuration flash reduces cost at volumes where a $1-2 configuration device per unit becomes material.
Recommended
Bus Interface and Glue Logic
With 150 user I/Os, the A42MX24-TQG176A handles wide parallel bus interfaces - ISA-style buses, processor local buses, and memory controllers - that modern low-voltage FPGAs cannot directly connect to. Registered paths through the MX Register Modules support pipeline stages at up to 105.5 MHz, while Combinatorial Modules implement wide decode functions efficiently. Typical usage includes address decoding, wait-state generation, byte-enable logic, and interrupt controllers on legacy embedded CPU boards.
Recommended
Medical Equipment Legacy Boards
Installed-base medical instruments frequently contain 5V programmable logic that must be sustained for years of service contracts. The A42MX24-TQG176A provides a form-in-place replacement path: the same 176-TQFP footprint, identical programming methodology, and design files that have remained unchanged since original qualification. Because antifuse programming is permanent and single-chip, re-verification effort for regulatory re-qualification is minimized, and DigiKey's stocked inventory supports predictable service-parts availability.
Recommended
Security-Sensitive Embedded Systems
Unlike SRAM FPGAs, the A42MX24's bitstream exists only once at programming time and cannot be read back or intercepted at power-up, making it attractive for copy-protection and anti-tamper designs. Systems integrating secure boot chains or proprietary algorithms in hardware use the MX24 as a hardened logic element. Combined with a 5V-tolerant I/O structure, it interfaces directly with older secure processors and EEPROMs without exposing additional attack surface through configuration interfaces.
Recommended
Recommended Products Summary
Engineering reference data for A42MX24-TQG176A — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | A42MX24-TQG176M | A42MX24-1TQG176I | A42MX16-3TQG176 | A42MX09-TQG176A |
|---|---|---|---|---|---|
| Package | 176-TQFP | 176-TQFP - same | 176-TQFP - same | 176-TQFP - same | 176-TQFP - same |
| Brand | Microsemi (Microchip Technology) | Microsemi (Microchip Technology) | Microsemi (Microchip Technology) | Microsemi (Microchip Technology) | Microsemi (Microchip Technology) |
| System Gates | 36000 | 36000 | 36000 | 24000 | 9000 |
| Logic Cells | 1890 | 1890 | 1890 | [DATA_NEEDED] | [DATA_NEEDED] |
| Supply Voltage | 5.0 V | 5.0 V | 5.0 V | 5.0 V | 5.0 V |
| User I/O | 150 | 150 | 150 | [DATA_NEEDED] | [DATA_NEEDED] |
| Max Clock Frequency | 105.5 MHz | [DATA_NEEDED] | [DATA_NEEDED] (-1 speed grade) | [DATA_NEEDED] (-3 speed grade, faster) | [DATA_NEEDED] |
| Programming Technology | Antifuse OTP | Antifuse OTP | Antifuse OTP | Antifuse OTP | Antifuse OTP |
Key Differentiators
- 36K gate capacity in the same footprint (vs A42MX16-3TQG176)
- Faster speed grade options for timing closure (vs A42MX24-1TQG176I)
- Native 5.0V operation (vs Any SRAM FPGA (e.g., Xilinx Spartan))
Design Notes
The MX family is one-time programmable antifuse silicon. You cannot reprogram or erase the device - a design change means a new programmed part. Freeze the design in Microchip Libero/Designer, complete full simulation and timing verification, and account for programming turnaround (in-house programmer or Microchip programming service) in your production schedule before releasing the PCB for assembly.
Provide clean 5.0V rails with local 0.1 uF ceramic decoupling at each VCC/GND pin pair of the 176-TQFP, plus bulk 10 uF per device. MX I/O switching of 150 simultaneously toggling outputs can generate significant ground bounce; use every GND pin and maintain solid ground planes. Verify the 105.5 MHz worst-case current from the MX family datasheet power calculator rather than estimating.
The 176-TQFP has 0.5 mm lead pitch - use solder-mask-defined pads with non-solder paste openings per IPC guidance for TQFP assembly, and add pull-back vias to avoid wicking. TQFP leads are fragile; handle trays carefully and inspect lead coplanarity before reflow. The G suffix indicates lead-free finish - confirm reflow profile compatibility (lead-free SAC alloy) in your process.
Compliance Information
G suffix in TQG176A indicates lead-free per Microchip ordering convention; distributor listing notes LEAD FREE. Formal RoHS/REACH declarations not found in provided data.
