Hi
Used SN65HVD24, failing transmission of 300 meter cable at 4MHz rates.
At this point, a surge absorption part is used for requirement of IEC61000-4-5.
If absorption part is removed, transmission can be passed above use case.
(It is no wonder because SN65HVD24 has internal equalizer.)
So, the cause of fail seems to be a capacitance of absorption part.
Do you have reference material for achieving transmission with long distance (300 m) using absorption part like CDSOT23-SM712?
Could you please tell me your view?
BestRegards