NXP 2, 2-Channel I/O Expander 10, 10-Pin TSSOP10, TSSOP10, PCA9615DPJ

The NXP PCA9615 is a Fast mode Plus (Fm+) SMBus or I2C bus buffer that extends the normal single ended SMBus or I2C bus through electrically noisy environments using a differential SMBus or I2C bus (dI2C) physical layer, which is transparent to the SMBus or I2C bus protocol layer. It consists of two single ended to differential driver channels for the SCL (serial clock) and SDA (serial data).

Lock-up free operation
Supports arbitration and clock stretching across the dI2C-bus buffers
Powered-off and powering-up high-impedance I2C-bus pins