A42MX16-1TQ176I

Overview

The A42MX16-1TQ176I is a Field Programmable Gate Array (FPGA) from the Microsemi MX series, housed in a 176-LQFP surface-mount package. It provides 24,000 system gates and supports up to 140 user-programmable I/O pins. The device operates within a supply voltage range of 3V to 3.6V or 4.5V to 5.5V. It functions reliably across an industrial temperature range of -40°C to +85°C ambient temperature. This component serves as a high-capacity single-chip ASIC alternative with mixed-voltage capabilities.

Feature Summary

• Supports mixed-voltage operation for both core and I/Os, including PCI-compliant interfaces.
• Enables up to 100% resource utilization and complete pin locking for deterministic timing.
• Includes unique in-system diagnostic and verification capability via Silicon Explorer II.

Applications

• High-speed controllers
• Address decoding circuits
• Peripheral bus interfaces

Procurement Notes

Verify the current lifecycle status before integration, as this specific part number is listed as discontinued by the manufacturer. Confirm that the 176-LQFP package dimensions match the target PCB footprint. Ensure design compatibility with the specified voltage ranges and industrial temperature limits. Check for any relevant Product Change Notifications or end-of-life notifications issued by Microchip Technology prior to final procurement decisions.

Selection Notes

Select this component when a high-density FPGA solution with mixed-voltage support is required for industrial applications. Consider the 176-pin form factor for space-constrained designs needing extensive I/O. Evaluate the 24,000 gate capacity against logic complexity requirements. Verify that the available SRAM resources meet memory needs for the intended application logic.

Part Context

This device belongs to the Microsemi 40MX and 42MX FPGA families, which are designed as cost-effective alternatives to complex ASICs. These devices consolidate logic previously implemented in multiple PALs, CPLDs, and FPGAs onto a single chip. The family offers high performance with fast wide-decode circuitry and configurable dual-port SRAM, targeting applications requiring rapid development cycles and high reliability.

Replacement Considerations

Publicly confirmed substitute part numbers for this specific discontinued model were not identified in the provided documentation. Designers should consult official Microchip Technology resources for validated cross-references or next-generation replacements compatible with the MX architecture.