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SN65HVD1782: 关于485转换器芯片AB总线上上下拉电阻的选取问题

Part Number: SN65HVD1782

TI工程师你好。

目前设计使用485的接口芯片SN65HVD1782,如上图A,B总线上的上拉下拉阻值的选取应该如何选择。TI是否有专门的手册加以说明?如果有请提供一下。谢谢。