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Optically isolating an I2C interface

Using IXYS Integrated Circuits Division’s CPC5902 and CPC5903

IXYS- Optically isolating an I2C interface
The ideal model of an open-drain bus as a simple, shared pull-up resistor is no longer instantaneously valid when using bus isolators with real-world propagation delays. If the delays are not considered in the design of the hardware, then there may be differences in the number of rising or falling edges seen at each isolated bus.

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