P82B715 Datasheet | NXP Semiconductors

description The P82B715 is a bipolar IC intended for application in I2C-bus and derivative bus systems. While retaining all the operating modes and features of the I2C-bus it permits extension of the practical separation distance between ponents on the I2C-bus by buffering both the data (SDA) and the clock (SCL) lines. The I2C-bus capacitance limit of 400 p F restricts practical munication distances to a few meters. Using one P82B715 at each end of a long cable (connecting Lx/Ly to Lx/Ly) reduces that cable’s loading on the linked I2C-buses by a factor of 10 and allows the total system capacitance load (all devices, cable, connectors, and traces or wires connected to the I2C-bus) to be around 3000 p F while the loading on each I2C-bus on the Sx/Sy sides remains below 400 p F. Longer cables or low-cost, general-purpose wiring may be used to link I2C-bus based modules without degrading noise...