• Resolved

LSF0108: how to choose the vaule of the pull up resistor

Part Number: LSF0108

hi

    when i use the LSF0108  to complete the level conversion,i found that choose the pull up resistor is difficult,because,according the equation of the datasheet,the    pull up risistor =(Vpu-0.35v)/0.015A,

for the equation ,i must know the current first,but a lot of dataheet don't given this parameter,so, i can't dicide the value of the pull up resistor.

   on my schematic,please see the following diagram,at the sign 1,there is a 10k pull up resistor at the other page,and the side A(pin8),there is a 1k pull up resistor,is OK?

at the sign 2,there is a 10k pull up resistor at the other page,and the other sideA(pin9),there is a 10k pull up too,is right?

and other pins,the side B are 1.24k pull up,and side A are 1k,is OK ?

the same chip  and the different channels the pull up resistor is different,is OK?

please check it for me ,thanks.