I'm investigating the use of this bidirectional buffer in an I2C automotive application, with long cable runs. The datasheet shows the SDA TX data in a twisted pair arrangement with GND, but shows the SCL TX data referenced to VDD. Why is that?
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I'm investigating the use of this bidirectional buffer in an I2C automotive application, with long cable runs. The datasheet shows the SDA TX data in a twisted pair arrangement with GND, but shows the SCL TX data referenced to VDD. Why is that?
It is important that the SCL/SDA signals are not paired with each other to prevent noise.
Both GND and VDD are low-impedance signals. You could use two GND lines, one for each, but then you would need an additional line for VDD.
I didn’t relalize power for the buffer on the slave side was being supplied by from master. I get it, thank you.
Thanks for the help Clemens!
Jorge,
Please let us know if you have any other questions.
Regards,
Eric Hackett