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SN74CBTLV3126 用来切换 I2C 信号,需不需要上拉电阻

Other Parts Discussed in Thread: SN74CBTLV3126

入题,SN74CBTLV3126 看内部框图,可以直接走 I2C 信号,客户在犹豫要不要预留上拉的电阻,不需要上拉和需要上拉有没有相关的文件说明,谢谢。

  • 客户是想切换什么器件的I2C 信号?SN74CBTLV3126只是一款开关器件,SN74CBTLV3126前后的器件的I2C信号如果内部没有上拉的话,那么就需要上拉,如果内部已经上拉,那么外部便不需要上拉了,直接接就好了。