施密特触发器74LVC3G17是否可以做电平转换芯片，频率要求不高？之前用过输入3.3v信号，给74LVC3G17供应5V电，可以将3.3V变为5V输出；现在输入是5V信号，LDO输出的3.3V给74LVC3G17供电，结果输出的信号是4.25V，LDO的供电也拉为4.25V，是什么原因导致的，客户知道有电平转换芯片，现在想知道出现这现象的原因。谢谢！
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