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https://e2e.ti.com/support/switches-multiplexers-group/switches-multiplexers/f/switches-multiplexers-forum/634633/cd74hc4051---q1-usage
如果 Vcc 连接到+ 12V、则 Vee 连接到-12v、因为有8个通道、8个通道输入模拟信号可以介于正负12V？之间
