PCA9538BS / PCA9538D

Adapts or transmits signals between devices.

Tutorial / documentation

Communication

Quick documentation & first test preparation

  1. Identify component PCA9538BS 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.

PCA9538BS

8-bit I/O expander, I2C / SMBus interface, interrupt and reset pins, VQFN-16

  • 8-bit I/O expander, I2C / SMBus interface, interrupt and reset pins, VQFN-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

PCA9538D

8-bit I/O expander, I2C / SMBus interface, interrupt and reset pins, SOIC-16

  • 8-bit I/O expander, I2C / SMBus interface, interrupt and reset pins, 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