PCA9508 Hot swappable level translating I2C-bus repeater Rev.
01 — 28 April 2008 Product data sheet 1.
General description The PCA9508 is a CMOS integrated circuit that supports hot-swap with zero offset and provides level shifting between low voltage (down to 0.
9 V) and higher voltage (2.
7 V to 5.
5 V) for 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 400 pF.
Using the PCA9508 enables the system designer to isolate two halves of a bus for both voltage...

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