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https://e2e.ti.com/support/logic-group/logic/f/logic-forum/901220/sn74lvc1t45-when-uart-tx-3-3v-level-shift-to-5-0v-then-overshoot-and-undershoot-is-large-how-to-impove-it
波形显示为：μ s 以下
原理图如下所示：
您可以使用具有较弱输出驱动器的电平转换器(如 SN74LV1T34)来减少振铃。 但振铃是由迹线上的信号反射引起的、因此您应该正确端接输出；请参阅 《LVC 设计人员指南》第1-27页。
