8-bit I2C-bus/SMBus Level Translating I/O Expander with Interrupt, Reset and Agile I/O in HVQFN16 package

The PCAL6408A is an 8-bit I²C GPIO expander with integrated interrupt and reset functionality, purpose-built to

expand microcontroller I/O. Featuring built-in level shifting and a wide 1.65 V to 5.5 V operating range, it enables

seamless communication across mixed-voltage systems. With advanced Agile I/O features and flexible package options, the PCAL6408A adapts to a wide range of applications.

As a pin-to-pin drop-in replacement that is fully software backward-compatible with the PCA6408A, it offers a

simple, reliable upgrade path for existing designs.