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SN65HVD230烧坏

Other Parts Discussed in Thread: SN65HVD230

SN65HVD230与别家的TJA1050通信,运行一段时间之后,经常发现SN65HVD230与TJA1050同时坏,其中SN65HVD230的CANH对VCC短路,电阻为1.5ohm左右,CAN总线只接了两根线,没有共地,在接口处有加一个TVS管,型号为PESD5V0L2BT,并且在总线CANH与CANL之间串联了一个10ohm/1206的电阻,此电阻也烧坏了,请问是什么原因引起了这个现象?