A42MX16-2TQG176 - 24K Gate FPGA 176-TQFP | Microchip Technology
MPN: A42MX16-2TQG176 ✓ Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $42.5 | $42.50 |
| 10 | $38.9 | $389.00 |
| 100 | $34.2 | $3,420.00 |
| 500 | $31 | $15,500.00 |
| 1,000 | $28.4 | $28,400.00 |
Drop-in alternatives for A42MX16-2TQG176 — 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:
A42MX16-1TQG176I
✅ Drop-In✓ In Stock
$29.9 / Unit
View Datasheet →A42MX16-3TQG176
✅ Drop-In✓ In Stock
$1 / Unit
View Datasheet →A42MX16-TQG176M
✅ Drop-In✓ In Stock
$61.2 / Unit
View Datasheet →A42MX24-TQG176M
⚡ Same Package✓ In Stock
$54.9 / Unit
View Datasheet →A42MX24-TQG176A
⚡ Same Package✓ In Stock
$43.2 / Unit
View Datasheet →A42MX16-2TQG176 Maximum Ratings & Electrical Characteristics
| System Gates | 24000 gates |
| Logic Cells (CLBs) | 608 |
| User I/O | 140 |
| Package | 176-TQFP (LQFP) |
| Speed Grade | -2 |
| Supply Voltage | 3.3 V / 5 V |
| Process Technology | 0.45 um CMOS |
| Maximum Toggle Frequency | 129 MHz / 215 MHz |
| Programming Technology | Antifuse (one-time programmable) |
| Family | MX (42MX) |
| Configuration Retention | Non-volatile (antifuse, no boot flash) |
| JTAG Boundary Scan | Yes (TDI to TDO chain) |
| Mounting Type | Surface Mount |
| Package Qualification Code | S-PQFP-G176 (JESD-30) |
| RoHS Status | Lead Free |
| Operating Temperature | [DATA_NEEDED: operating temperature range] |
| Design Toolchain | Microchip Libero SoC |
A42MX16-2TQG176 Pin Configuration
| Pin 1 | IO — User I/O (bank A) - exact assignment per DS2316 Table |
| Pin 10 | VDD — Core supply (3.3V or 5V per configuration) |
| Pin 20 | GND — Ground |
| Pin 30 | IO — User I/O |
| Pin TCK | TCK — JTAG test clock (boundary scan input) |
| Pin TDI | TDI — Boundary-scan register chain input |
| Pin TDO | TDO — Boundary-scan register chain output (chain ends at TDO) |
| Pin TMS | TMS — JTAG test mode select |
| Pin CLK | CLK — Dedicated clock input (dual-module clock resources) |
| Pin 176 | IO — User I/O (bank C) |
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
A42MX16-2TQG176 is suitable for 6 applications: Legacy PLD Consolidation, Industrial Control Systems, Avionics and Defense Legacy Redesign, ASIC Prototyping and Bridge Logic, Telecom and Networking Line Cards, Secure Embedded Systems.
Legacy PLD Consolidation
The MX family was explicitly designed by Microchip (Actel/Microsemi) to integrate legacy PAL, GAL, and PLD devices into a single low-cost 24K-gate chip. The A42MX16-2TQG176 provides 608 logic cells and 5V-tolerant I/O, directly compatible with legacy TTL and 5V CMOS signal levels that modern FPGAs cannot accept. Consolidation reduces board area, BOM count, and failure points while preserving the original logic functionality, making it the standard choice for sustaining mature industrial and telecom boards.
Recommended
Industrial Control Systems
Industrial controllers frequently retain 5V sensor and actuator interfaces. The A42MX16-2TQG176 operates on 3.3V/5V supplies with 140 user I/Os at up to 129 MHz internal toggle, providing deterministic glue logic, PWM generation, and interlock sequencing. Its antifuse configuration is non-volatile and immune to power glitches, eliminating configuration-flash corruption issues common in SRAM FPGAs on noisy factory floors. Drop-in family alternates (-1/-3 grades) allow timing optimization without PCB redesign.
Recommended
Avionics and Defense Legacy Redesign
The MX family is qualified across extended temperature grades including M (military), making A42MX16 TQFP-176 variants a common choice for avionics obsolescence redesigns. The antifuse technology offers no configuration readback path, supporting anti-tamper requirements, and retains configuration through power cycling without boot PROMs. With 24K gates and 5V-tolerant I/O it reproduces legacy MIL-STD bus glue logic and sequencer functions while family members A42MX24-TQG176M provide an upgrade path within the same footprint.
Recommended
ASIC Prototyping and Bridge Logic
Microchip positions MX as a reliable single-chip ASIC alternative for medium-volume designs. The A42MX16-2TQG176 with 608 cells serves as bridge logic between processors and peripherals, address decoding, and bus translation in embedded systems. One-time programmability means the production configuration is fixed at power-on with zero configuration latency - valuable for systems with strict boot-time requirements. Design flow uses Microchip Libero SoC for synthesis through fuse-file generation.
Recommended
Telecom and Networking Line Cards
Telecom line cards historically used 5V backplane signaling. The A42MX16-2TQG176 accepts 5V-tolerant inputs on its 140 user I/Os while running internal logic at 3.3V, directly interfacing legacy backplanes such as H.110 and PMC carriers. The 176-TQFP package provides practical lead pitch for hand-inspection in repair depots, and the non-volatile antifuse configuration survives hot-swap power transients without reconfiguration. Family members in VQG100 and PQG160 packages enable density-matched board variants.
Recommended
Secure Embedded Systems
Unlike SRAM FPGAs, antifuse devices cannot have their configuration dumped, cloned, or glitched through configuration interfaces because none exist after programming. The A42MX16-2TQG176 therefore suits secure boot bridges, key-storage handshake logic, and anti-tamper sequencing in security-sensitive equipment. Non-volatile configuration removes the boot-flash attack surface entirely. Designers should combine it with authenticated MCU firmware for end-to-end protection; the 24K-gate capacity accommodates state machines, comparators, and secure interlocks.
Recommended
Recommended Products Summary
Engineering reference data for A42MX16-2TQG176 — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | A42MX16-1TQG176I | A42MX16-3TQG176 | A42MX16-TQG176M | A42MX24-TQG176M |
|---|---|---|---|---|---|
| Package | 176-TQFP | 176-TQFP - same | 176-TQFP - same | 176-TQFP - same | 176-TQFP - same |
| Brand | Microchip Technology (Microsemi) | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| System Gates | 24000 | 24000 | 24000 | 24000 | 36000 |
| Logic Cells | 608 | 608 | 608 | 608 | [DATA_NEEDED] |
| Speed Grade | -2 | -1 (slower) | -3 (faster) | [DATA_NEEDED] | [DATA_NEEDED] |
| User I/O | 140 | 140 | 140 | 140 | [DATA_NEEDED] |
| 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 |
| Temperature Grade | Standard | Industrial (I) | Standard | Military (M) | Military (M) |
| Programming Technology | Antifuse OTP | Antifuse OTP | Antifuse OTP | Antifuse OTP | Antifuse OTP |
Key Differentiators
- 5V-tolerant I/O architecture (vs Xilinx XC4000XL)
- Non-volatile secure configuration (vs A42MX16-1TQG176I (and all SRAM FPGAs))
- Higher density upgrade in same footprint (vs A42MX24-TQG176M)
Design Notes
The MX family uses dual 3.3V/5V supply architecture. Decouple each VDD pin pair with 0.1 uF ceramic capacitors placed within 5 mm of the pin, plus bulk 10 uF per supply rail. Because antifuse FPGAs draw no configuration current at power-up, inrush is dominated by decoupling capacitors - useful for hot-swap backplane designs where SRAM FPGAs require configuration supervisors.
The device is one-time programmable. Never commit a design to silicon without closing timing in Libero SoC and verifying all I/O assignments against the 176-TQFP pinout table in datasheet DS2316. There is no field rework path - a pinout error requires a new device and potentially a new PCB. Maintain the fuse file under configuration control for production programming.
When interfacing 5V legacy buses, verify that external pull-ups do not push I/O clamp currents beyond datasheet limits. For the boundary-scan chain, remember it starts at TDI and ends at TDO per DS2316 - chain multiple MX devices with TDO-to-TDI daisy chaining and keep TCK routing short with series termination (22-33 ohm) to limit ringing on the test clock.
Compliance Information
Distributor listings (PCB Electronics) indicate LEAD FREE status for A42MX16-2TQG176. Full REACH/halogen data not present in provided sources.
