# United States tariff lines under HS 8542.31

> The United States tariff splits HS 8542.31 (electronic integrated circuits: Processors and controllers, whether or not combined with memories, converters, logic circuits, amplifiers, clock and timing circuits, or other circuits) into 13 national lines: 8542.31.00.15 (8-bit), 8542.31.00.20 (16-bit), 8542.31.00.25 (32-bit), 8542.31.00.30 (other) and 9 others. Every United States line under 8542.31 is free of general (MFN) duty.

Source: https://border.bot/countries/united-states/hs-codes/854231
Last updated: 9 October 2026

[Countries](https://border.bot/countries) / [United States](https://border.bot/countries/united-states) / [Chapter 85](https://border.bot/countries/united-states/hs-codes/85) / [8542.31](https://border.bot/countries/united-states/hs-codes/854231)

## Key facts

- HS subheading: [8542.31](https://border.bot/hs-codes/854231)
- Duty (MFN): Free
- National lines: 13
- Tariff: [United States](https://border.bot/countries/united-states)
- Chapter: 85: Electrical machinery and equipment and parts thereof; sound recorders and reproducers, television image and sound recorders and reproducers, and parts and accessories of such articles

## United States lines under 8542.31

The United States tariff splits HS 8542.31 (electronic integrated circuits: Processors and controllers, whether or not combined with memories, converters, logic circuits, amplifiers, clock and timing circuits, or other circuits) into 13 national lines: 8542.31.00.15 (8-bit), 8542.31.00.20 (16-bit), 8542.31.00.25 (32-bit), 8542.31.00.30 (other) and 9 others.

Every United States line under 8542.31 is free of general (MFN) duty.

- [8542.31.00.15](https://border.bot/countries/united-states/hs-codes/8542310015) Electronic integrated circuits, Processors and controllers, whether or not combined with memories, converters, logic circuits, amplifiers, clock and timing circuits, or other circuits, Controllers (including microcontrollers), 8-bit. Duty (MFN): free
- [8542.31.00.20](https://border.bot/countries/united-states/hs-codes/8542310020) Electronic integrated circuits, Processors and controllers, whether or not combined with memories, converters, logic circuits, amplifiers, clock and timing circuits, or other circuits, Controllers (including microcontrollers), 16-bit. Duty (MFN): free
- [8542.31.00.25](https://border.bot/countries/united-states/hs-codes/8542310025) Electronic integrated circuits, Processors and controllers, whether or not combined with memories, converters, logic circuits, amplifiers, clock and timing circuits, or other circuits, Controllers (including microcontrollers), 32-bit. Duty (MFN): free
- [8542.31.00.30](https://border.bot/countries/united-states/hs-codes/8542310030) Electronic integrated circuits, Processors and controllers, whether or not combined with memories, converters, logic circuits, amplifiers, clock and timing circuits, or other circuits, Controllers (including microcontrollers), Other. Duty (MFN): free
- [8542.31.00.35](https://border.bot/countries/united-states/hs-codes/8542310035) Electronic integrated circuits, Processors and controllers, whether or not combined with memories, converters, logic circuits, amplifiers, clock and timing circuits, or other circuits, Processors (including microprocessors), Digital signal processors (DSPs). Duty (MFN): free
- [8542.31.00.40](https://border.bot/countries/united-states/hs-codes/8542310040) Electronic integrated circuits, Processors and controllers, whether or not combined with memories, converters, logic circuits, amplifiers, clock and timing circuits, or other circuits, Processors (including microprocessors), Graphics processing units (GPUs). Duty (MFN): free
- [8542.31.00.45](https://border.bot/countries/united-states/hs-codes/8542310045) Electronic integrated circuits, Processors and controllers, whether or not combined with memories, converters, logic circuits, amplifiers, clock and timing circuits, or other circuits, Processors (including microprocessors), Central processing units (CPUs). Duty (MFN): free
- [8542.31.00.50](https://border.bot/countries/united-states/hs-codes/8542310050) Electronic integrated circuits, Processors and controllers, whether or not combined with memories, converters, logic circuits, amplifiers, clock and timing circuits, or other circuits, Processors (including microprocessors), Other. Duty (MFN): free
- [8542.31.00.55](https://border.bot/countries/united-states/hs-codes/8542310055) Electronic integrated circuits, Processors and controllers, whether or not combined with memories, converters, logic circuits, amplifiers, clock and timing circuits, or other circuits, Programmable logic devices (PLDs), Complex programmable logic devices (CPLDs). Duty (MFN): free
- [8542.31.00.60](https://border.bot/countries/united-states/hs-codes/8542310060) Electronic integrated circuits, Processors and controllers, whether or not combined with memories, converters, logic circuits, amplifiers, clock and timing circuits, or other circuits, Programmable logic devices (PLDs), Field programmable gate arrays (FPGAs). Duty (MFN): free
- [8542.31.00.65](https://border.bot/countries/united-states/hs-codes/8542310065) Electronic integrated circuits, Processors and controllers, whether or not combined with memories, converters, logic circuits, amplifiers, clock and timing circuits, or other circuits, Programmable logic devices (PLDs), Other. Duty (MFN): free
- [8542.31.00.70](https://border.bot/countries/united-states/hs-codes/8542310070) Electronic integrated circuits, Processors and controllers, whether or not combined with memories, converters, logic circuits, amplifiers, clock and timing circuits, or other circuits, System on chip (SoCs). Duty (MFN): free
- [8542.31.00.75](https://border.bot/countries/united-states/hs-codes/8542310075) Electronic integrated circuits, Processors and controllers, whether or not combined with memories, converters, logic circuits, amplifiers, clock and timing circuits, or other circuits, Other. Duty (MFN): free

## In other countries

No other national tariff on border.bot has live lines under 8542.31 yet.

- [The Harmonized System text for 8542.31](https://border.bot/hs-codes/854231)

- Previous subheading: [8541.90](https://border.bot/countries/united-states/hs-codes/854190) Semiconductor devices (for example, diodes, transistors, semiconductor-based transducers); photosensitive semiconductor devices, including photovoltaic cells whether or not assembled in modules or made up into panels; light-emitting diodes (LED), whether or not assembled with other light-emitting diodes (LED); mounted piezo-electric crystals; parts thereof
- Next subheading: [8542.32](https://border.bot/countries/united-states/hs-codes/854232) Electronic integrated circuits; parts thereof

## Frequently asked questions

### How many national tariff lines does the United States tariff have under HS 8542.31?

The United States tariff splits HS 8542.31 (electronic integrated circuits: Processors and controllers, whether or not combined with memories, converters, logic circuits, amplifiers, clock and timing circuits, or other circuits) into 13 national lines: 8542.31.00.15 (8-bit), 8542.31.00.20 (16-bit), 8542.31.00.25 (32-bit), 8542.31.00.30 (other) and 9 others.

### What is the duty on HS 8542.31 in the United States?

Every United States line under 8542.31 is free of general (MFN) duty.

## Sources and updates

The tariff lines for the United States come from border.bot release 1 (edition 2026HTSRev21), read from the publisher’s files, and have been live since 9 October 2026.

The duty rates for the United States come from border.bot release 1 (edition 2026HTSRev21), read from the publisher’s files, and have been live since 9 October 2026.

The trade programmes for the United States come from border.bot release 1 (edition 2026HTSRev21), read from the publisher’s files, and have been live since 9 October 2026.

This page was last updated on 9 October 2026.

Guidance from published tariff data, not a binding ruling. For a decision customs must follow, apply to the destination’s customs authority for a binding tariff ruling.

Official source files:

- https://hts.usitc.gov/reststop/exportList?from=0000000000&to=9999999999&format=CSV&styles=false

Machine-readable: https://border.bot/countries/united-states/hs-codes/854231.json