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THS6214 的Bias端是Logic 1时的描述如下，MAX 没有明确标注，12V供电是不是可以直接接到Bias端做置高的设计，比较急，等回复，谢谢！
这里相当于bias逻辑高低电平的阈值，一般逻辑低的给出max，逻辑高给出min。
Vbias高电平的Vih（min）=1.9V，所以直接接12V置高没问题，或者通过一上拉电阻到VCC，电阻起到了限流作用。
