https://blog.youkuaiyun.com/m0_74422574zh-cnhttps://blog.youkuaiyun.com/https://blog.youkuaiyun.com/m0_74422574/article/details/151331569https://blog.youkuaiyun.com/m0_74422574/article/details/151331569m0_74422574Mon, 08 Sep 2025 21:14:58 +0800https://blog.youkuaiyun.com/m0_74422574/article/details/139362537https://blog.youkuaiyun.com/m0_74422574/article/details/139362537m0_74422574Sun, 02 Jun 2024 11:32:21 +0800https://blog.youkuaiyun.com/m0_74422574/article/details/139251265https://blog.youkuaiyun.com/m0_74422574/article/details/139251265m0_74422574Tue, 28 May 2024 00:42:58 +0800Ud，二极管正向导通，此时Us的电压变为0.7V，此时MOS管导通，所以Us的电压再变为0，所以此时实现了低电平的转换。原理分析：当Slave给1时，Master处于输入状态，Master处于高阻状态，很容易判断MOS管处于截止状态，所以此时Master的状态被上拉电阻拉高，处于高电平。当处于开漏输出时需要进行外部上拉，P-MOS管不作用，N-MOS管导通进行下拉，N-MOS管不导通时，外部上拉。可以看MOS管的箭头方向，也可以通过寄生二极管的方向判断。]]>