Tutorial: TCA9554DB / TCA9554DW

Adapts or transmits signals between devices.

TCA9554DB / TCA9554DW

Tutorial / documentation

Communication

Quick documentation & first test preparation

  1. Identify component TCA9554DB 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.

TCA9554DB

8 Bit Port/Expander, I2C SMBUS, Interrupt output, SSOP-16

  • 8 Bit Port/Expander, I2C SMBUS, Interrupt output, SSOP-16
  • 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

TCA9554DW

8 Bit Port/Expander, I2C SMBUS, Interrupt output, SOIC-16

  • 8 Bit Port/Expander, I2C SMBUS, Interrupt output, SOIC-16
  • 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.