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About CANH and CANL on CAN driver
I try to use CAN driver "SN65HVD230DR " for my application.
if I connect pin canH to canL and pin canL to canH in some ic,
will it damage all/some CAN transceivers in this bus ?
if it will happen, does it possible to prevent this fault in circuit ?
This shouldn't damage any of the transceivers, the SN65HVD230 has a 250mA short-circuit current limit. It might get hot from that current, but the high current won't do any damage directly. If the part got hot enough it may go into thermal shutdown, and the bus pins will go high impedance until the temperature drops back down. During this time, the D and R pins assume a logic high state.
That being said, communication with the reversed polarity IC will not be possible. It will interpret both recessive and dominant bus lines as <0.5V differentially, which means it will always be seeing a logic high. Additionally, any bits that it sends onto the bus will be interpreted by the other transceivers as logic high's as well.
Let me know if this answers your question. Thanks,
Thank you for your reply and those info. is useful for me.
I think one of the mistake on first time I use CAN transceiver is
I connected this VCC of IC with 5V. I think it may damage the IC.
ps: sorry for I reply late.
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