Tutorial: CH330N / CH340N

Adapts or transmits signals between devices.

CH330N / CH340N

Tutorial / documentation

Communication

Quick documentation & first test preparation

  1. Identify component CH330N and its package.
  2. Identify the protocol, logic levels and each pin’s function.
  3. Check required termination and pull-up/pull-down resistors.
  4. Consult the application circuit in the linked documentation before testing.

CH330N

USB serial converter, UART, SOIC-8

  • USB serial converter, UART, SOIC-8
  • Identify the protocol, logic levels and each pin’s function.
  • Check required termination and pull-up/pull-down resistors.
  • The manufacturer’s pinout and absolute limits take precedence over this page.
Technical documentation

CH340N

USB serial converter, 2Mbps, UART, JEITA SOIC-8 (SOP-8)

  • USB serial converter, 2Mbps, UART, JEITA SOIC-8 (SOP-8)
  • Identify the protocol, logic levels and each pin’s function.
  • Check required termination and pull-up/pull-down resistors.
  • The manufacturer’s pinout and absolute limits take precedence over this page.
Technical documentation

Inputs and outputs must match the function described in the selected reference’s documentation.