8542.31.00.60 - Field programmable gate arrays (FPGAs)

HTS 8542.31.00.60 specifically covers Field Programmable Gate Arrays (FPGAs). FPGAs are a type of programmable logic device that are manufactured as an integrated circuit and can be programmed by a customer or designer after manufacturing, hence "field programmable." They consist of a configurable array of logic blocks, memory, and interconnects, allowing users to implement custom digital logic circuits.

This category is distinct from its sibling, 8542.31.00.55 (Complex Programmable Logic Devices or CPLDs), in terms of architecture and complexity. While both are programmable logic devices, FPGAs generally offer a much larger number of configurable logic blocks and more flexible routing resources, enabling the implementation of significantly more complex digital systems compared to CPLDs. CPLDs, in contrast, typically have a more structured architecture with a fixed interconnect scheme.

As this is a leaf node within the HTS structure, there are no further subcategories. Classification within 8542.31.00.60 is determined by the product meeting the definition of a field-programmable gate array. Key classification considerations include the device's ability to be reprogrammed in the field to implement custom logic functions, its architecture based on configurable logic blocks and interconnects, and its intended use as a semiconductor device for digital circuit implementation.