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关于tx0102的portA/B使用疑问

Other Parts Discussed in Thread: SN74LVC2T45, TXS0102

手册上写portA 输入-0.5~4.6,portB 输入-0.5~6.5;

如果我Vcca接3.3V,Vccb接5v,然后portA输入 5v的信号,那么输出端portB输出的是什么??