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您好,关于LSF010x系列的内部架构以及工作原理,我们有专门这类LSF系列电平转换器件的培训视频,您可以仔细看一下。Vbpu是上拉电压,因为B1端是开漏输出,比如A端是1.8V,您需要1.8V到5V的转换,那么Vbpu=5V。 您可以先看下我们的讲解视频:
https://training.ti.com/tlm-lsf-bias?context=1134826-1139264-1134790