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目前采用ISO1050的芯片做CAN接口设计,但是现在接入TVS保护就不能通讯,去掉就可以,想问下原因

Other Parts Discussed in Thread: ISO1050

设计电路图如上图,D6,D7想做共模保护,D9想做差模保护,但是现在两个同样的CAN通讯电路,接上TVS就不能通讯,但是去掉可以