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用了两款TI的转换芯片,一款是TXS0108E转换芯片,工作正常。另一片是LSF0108转换2.5v到3.3v,现在测试LSF0108时,在3.3v一侧加125M的时钟,2.5v输出的电平一直为高,在降到10M时,还是同样的问题,参考的是TI官方的测试板。req信号为2.5v转为3.3v,ack为3.3v转换为2.5v。同样的问题是信号转换后一直为高电平。这是什么问题呢?
您好,感谢回复,已解决。