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P82B715是否兼容1.8V的I2C接口

Other Parts Discussed in Thread: P82B715

关于贵司P82B715这颗I2C Extend芯片,用来延长I2C通讯距离,我的应用需要把I2C通讯距离延长60公分,有如下问题请教,帮忙确认下,谢谢!

 

简易设计框图:主控这边I2C1.8V 经过电平转换芯片输出3.3V ,接入P82B715,通过60公分左右线材拉到另一个主板,接入P82B715,再通过电平转换为1.8V,问题如下:


 

  1. P82B715 两端的I2C 电平是否可以不一致,比如I2C电平输入1.8V ,P82B715 供电是3.3V, 经过P82B715输出I2C电平是3.3V?

  2. 这种架构,如果P82B715 供电3.3V ,两端I2C电平可以接不一致的话(1.8V和3.3V),就可以省掉电平转换芯片,这种方案是否可行?