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1． TXB0108多余的通道需要怎么处理？悬空是否有风险？ TXS0108呢？
2． OE直接接到VCCA，不接下拉电阻，在VCCB VCCA上电后发现外接IO（电压等于VCCA）会向芯片的OE 及A侧信号管脚漏电，请问是什么原因？
