TCA9555 - I2C GPIO Expander Use Cases
I2C GPIO Expanders are common devices used in several applications ranging from industrial, personal electronics, enterprise systems, and much more.
Why PCAL6524 is a Widely Capable IO Expander
PCAL6524 from NXP is a low voltage translating 24-bit FM+ I2Cbus/SMBus IO expander with Agile IO features, external interrupt and reset