NXP PCA9617ADP Level Translating Fm+
NXP Semiconductors PCA9617ADP Level Translating Fm+ I2C-Bus Repeater is a CMOS integrated circuit that provides level shifting between low voltage (0.8V to 5.5V) and higher voltage (2.2V to 5.5V) Fast-mode Plus (Fm+) I2C-bus or SMBus applications. While retaining all the operating modes and features of the I2C-bus system during the level shifts, it also permits extension of the I2C-bus by providing bidirectional buffering for both the data (SDA) and the clock (SCL) lines, thus enabling two buses of 540pF at 1MHz or up to 4000pF at lower speeds. Using the PCA9617ADP enables the system designer to isolate two halves of a bus for both voltage and capacitance. The SDA and SCL pins are overvoltage tolerant and are high-impedance when the PCA9617ADP is unpowered.