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只需要两路，CD4052是四选一，我只需要二选一的器件，可以支持到12V信号电压范围，感谢
能支持到12V的二选一的器件可参考TS12A12511。最大电压可到12V，并且这款还可以双电源供电，允许负信号输入。
http://www.ti.com/lit/ds/symlink/ts12a12511.pdf
