8542.31.00.55 - Complex programmable logic devices (CPLDs)

This classification covers Complex Programmable Logic Devices (CPLDs). CPLDs are integrated circuits designed to implement combinational and sequential logic functions based on user-defined programming. They offer a flexible and reconfigurable platform for digital circuit design, allowing designers to implement complex logic without the need for custom silicon fabrication for each specific application. CPLDs are characterized by their fixed routing architecture and relatively lower gate counts compared to some other programmable devices.

Within the broader category of programmable logic devices, CPLDs are distinct from Field Programmable Gate Arrays (FPGAs), which are also classified under 8542.31.00. While both are programmable, FPGAs generally offer significantly higher logic densities, more complex internal architectures, and greater flexibility due to their highly granular routing structures. CPLDs, conversely, are typically chosen for simpler logic functions, lower power consumption, faster propagation delays for specific operations, and non-volatile configuration storage inherent to their design.

As this is a leaf node within the HTS classification, there are no further subcategories for CPLDs. Therefore, classification within 8542.31.00.55 relies on accurately identifying the device as a Complex Programmable Logic Device, differentiating it from FPGAs based on architectural and performance characteristics. This ensures that goods are correctly identified and subject to the appropriate customs duties and regulations.