A42MX24-TQG176I

Overview

The A42MX24-TQG176I is a field-programmable gate array from the Microchip MX series, featuring 36,000 system gates and 912 logic elements. It provides 150 user-programmable I/O pins within a 176-pin TQFP package. The device supports mixed-voltage operation with core and I/O voltages of 3.3V or 5.0V, adhering to PCI-compliant standards. Operating specifications include a minimum voltage of 4.75V and a maximum of 5.25V for the commercial grade, with an operating temperature range of 0°C to +70°C.

Feature Summary

• Single-chip ASIC alternative architecture offering high resource utilization and deterministic timing.
• Supports up to 202 user-programmable I/O pins with mixed-voltage capability for flexible interface integration.
• Includes configurable dual-port SRAM blocks and fast wide-decode circuitry for complex logic implementation.

Applications

• Industrial control systems requiring deterministic timing and mixed-voltage interfaces.
• Automotive electronics utilizing commercial temperature plastic packages.
• Military applications compatible with MIL-STD-883 ceramic packages.

Procurement Notes

Verify the specific suffix 'I' indicates industrial temperature rating if required, though datasheets often list commercial ranges for standard variants. Confirm RoHS compliance status as some older Actel-branded parts may have non-compliant versions. Check for End-of-Life notifications, as the MX family has faced discontinuation notices from Microchip. Ensure the TQFP-176 package availability aligns with current manufacturing changes documented in Product Change Notifications.

Selection Notes

Select this model when 36K system gates and 150 I/Os are necessary for mixed-voltage designs. Compare against the A42MX16 series for lower gate counts or the A42MX24-PL84 variant for different packaging needs. Verify that the 3.3V/5.0V mixed-voltage requirement matches the target application's signal levels. Consider the 176-pin TQFP footprint constraints during PCB layout planning.

Part Context

This component belongs to the Microchip (formerly Actel) 42MX FPGA family, designed as single-chip ASIC alternatives. The MX series is characterized by its flash-based technology, allowing instant power-up configuration without external memory. The A42MX24 represents the mid-range capacity within this portfolio, balancing gate density with pin count for versatile programmable logic applications.

Replacement Considerations

Publicly confirmed substitute part numbers are not available in the provided documentation. The A42MX24-3TQG176 shares the same package and gate count but differs in speed grade. Designers should verify compatibility with existing bitstreams and physical footprints before considering any speed-grade variations within the same package.