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https://e2e.ti.com/support/interface-group/interface/f/interface-forum/684811/tca9546a-power-supplying-sequence
您好！
我们现在拥有的应用将在 Vdpum 和 Vdpu0~vdpu3具有相同的电压电平。 问题是 、Vdpum 是否在 Vdpu0~vdpu3之前提供？
谢谢！
安东尼
您好、Anthony、
如果 Vcc 为 GND 并且通道未启用、我们的器件将在通道之间具有高阻抗、因此上拉电压可以按任何顺序加电。
-Bobby
