你好，请问能不能单极性电源供电处理有负值的双极性信号？
是说比如VDD=+5V, VSS = 0V，输入电压却有可能<0V？
那你“越轨”了的，会Latch了的，看datasheet P3/20
ANALOG SWITCH
Analog Signal Range VDD to VSS
更详细的关于模拟开关，可以了解下述几个链接
https://www.analog.com/cn/products/switches-multiplexers…
https://www.analog.com/cn/products/switches-multiplexers/analog-switches-multiplexers.html
https://www.analog.com/cn/technical-articles/replacing-discreet-protection-components-with-overvoltage-fault-protected-analog-switches.html
https://www.analog.com/cn/analog-dialogue/articles/solving-iec-system-protection-for-analog-inputs.html