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ISO7421或ISO7420能隔离MAX3485的A,B吗？如果能是选择那个芯片。
根据资料分析，他们不能用于485的A、B隔离。
485的A,B是双向差分数据，ISO7421或ISO7420各通道均是单向隔离
如果你需要隔离485信号的话，TI有专门的485隔离收发器，http://www.ti.com/lsds/ti/isolators/isolated-rs-485-products.page?familyAliasId=1203122¶mCriteria=no
这样使用一片485的隔离收发器就能完成收发，隔离的作用。
