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ISO1050: Strange behavior

Part Number: ISO1050

Hello,

Our customer use the ISO1050.

The customer are doing the short test.

I attach the circuit and the scopeshots of the results as below.

ISO1050_scopeshot.pptx

The voltage of the CANH is fixed 3.64V and the recessive voltage of the CANL is 3.64V.

Could you tell me why this behavior occur?

Best Regards,

Naoki Aoyama