Tutorial: PCAL6408ABS / PCAL6408AHK

Adapts or transmits signals between devices.

PCAL6408ABS / PCAL6408AHK

Tutorial / documentation

Communication

Quick documentation & first test preparation

  1. Identify component PCAL6408ABS 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.

PCAL6408ABS

8-bit I2C-bus/SMBus I/O expander, 100 / 400 kHz (standard / fast-mode), interrupt output, 1.65 - 5.5V supply, VQFN-16

  • 8-bit I2C-bus/SMBus I/O expander, 100 / 400 kHz (standard / fast-mode), interrupt output, 1.65 - 5.5V supply, 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

PCAL6408AHK

8-bit I2C-bus/SMBus I/O expander, 100 / 400 kHz (standard / fast-mode), interrupt output, 1.65 - 5.5V supply, X1QFN-16

  • 8-bit I2C-bus/SMBus I/O expander, 100 / 400 kHz (standard / fast-mode), interrupt output, 1.65 - 5.5V supply, X1QFN-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.