PCA9557BS / PCA9557D

Adapts or transmits signals between devices.

Tutorial / documentation

Communication

Quick documentation & first test preparation

  1. Identify component PCA9557BS 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.

PCA9557BS

8-bit I2C-bus and SMBus I/O port with reset, HVQFN-16

  • 8-bit I2C-bus and SMBus I/O port with reset, HVQFN-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

PCA9557D

8-bit I2C-bus and SMBus I/O port with reset, SO-16

  • 8-bit I2C-bus and SMBus I/O port with reset, SO-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