PCA9522 Datasheet - NXP Semiconductors

PCA9522 Fast dual bidirectional bus buffer

The PCA9522 is a monolithic bipolar integrated circuit for bus buffering in applications including I2C-bus, SMBus, etc. It includes hot insertion logic for detecting stop and idle conditions, making it ideal for live insertion into backplanes. The buffer extends the bus load limit by buffering both .

PCA9522 Features

* Dual, bidirectional unity gain isolating buffer

* Hot insertion logic prevents data and clock bus corruption for live backplane applications

* Pre-charge minimizes data corruption on live insertion

* Supports I2C-bus (Standard-mode and Fast-mode), SMBus (standard and high power mod

PCA9522-NXPSemiconductors.pdf