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ESD Protection for LT3960

Hi ADI,

We are working on a design incorporating the LT3960 and would appreciate some advice around adding additional ESD protection for the four CANSXXX pins.

Should the bipolar TVS diodes connect between each of the four pins and GND, or should they connect back to back across the SDA/SCL pairs as suggested by the schematic on page 22 of the Datasheet?

If it is GND, please update the schematic to include a dot at the intersection to improve clarity.

Additionally, the schematic shows both bipolar TVS diodes connected to CANSCLL and CANSCLH, rather than one to each.

Interestingly, the breakdown voltage for the recommended part is significantly higher than the signalling voltage - is this to allow for different GND potential between Master and Slave?

Thank you,

Jeremy.