CPC5903

www.DataSheet.co.kr Optically Isolated I C Bus Repeater 2 CPC5903 Features Bidirectionally Buffers I2C SDA Signal Extends and Isolates I2C Interfaces Standard-mode and Fast-mode I2C Side B Fast-mode Compatible VDDB > 4.5V Operates on 2.7V to 5.5V Voltage Level Translation Slew-Limited Drivers Reduce EMI Powerdown to Hi-Z Does Not Load I2C 3750Vrms Galvanic Isolation Single 8-pin Surface-Mount Package Description The CPC5903 is a dual, optically isolated, logic-bus repeater. It isolates two open-drain logic signals while providing 3750Vrms of galvanic isolation. When the two sides are powered by different supply voltages, it also functions as a logic level translator for levels as low as 2.7V or as high as 5.5V. Because the CPC5903 provides an isolated bidirectional buffer for the I2C data signal and a unidirectional buffer for the I2C clock signal, it is best suited for applications where clock stretching is not required. This configuration also requires the I2C bus master to be on the Side A bus. Unlike transformer or capacitive isolators, optical isolation passes DC signals and does not require continuous clocking to ensure the proper state is maintained. The CPC5903 always returns the buffered signals to their proper state after transient interruptions on either side. Applications Isolated Control and Signal Monitoring Power-over-Ethernet Power Supply High Side Interface I2C Bus Length Extenders I2C Logic Level Translation Approvals UL ...