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CAN收发器供电电流

Other Parts Discussed in Thread: SN65HVD251

您好,我在查看CAN收发器的手册时注意到,5V供电的CAN收发器,器件功耗基本在100mw左右(比如SN65HVD251),但是其显性输出时供电电流ICC最大可以达到65ma,这个值是怎么计算出来的?我在设计低功耗系统时,CAN部分的功耗该怎么计算?