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PCA9525
Simple 2-wire bus buffer
Rev. 1 — 25 February 2011 Product data sheet
1. General description
The PCA9525 is a monolithic CMOS integrated circuit for bus buffering in applications including I2C-bus, SMBus, DDC, PMBus, and other systems based on similar principles. The buffer extends the bus load limit by buffering both the SCL and SDA lines, allowing the maximum permissible bus capacitance on both sides of the buffer. The PCA9525 includes a unidirectional buffer for the clock signal, and a bidirectional buffer for the data signal. Slave devices which employ clock stretching are therefore not supported. In its most basic implementation, the buffer will allow an extended number of slave devices to be attached to one (or more) master devices.
PCA9525 Datasheet
