Tutorial: PCA9544AD / PCA9544APW

Adapts or transmits signals between devices.

PCA9544AD / PCA9544APW

Tutorial / documentation

Communication

Quick documentation & first test preparation

  1. Identify component PCA9544AD 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.

PCA9544AD

4-channel I2C-bus multiplexer with interrupt logic, SOIC-20

  • 4-channel I2C-bus multiplexer with interrupt logic, SOIC-20
  • 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

PCA9544APW

4-channel I2C-bus multiplexer with interrupt logic, TSSOP-20

  • 4-channel I2C-bus multiplexer with interrupt logic, TSSOP-20
  • 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.