Hi Team,
customer is evaluating the LSF0108 for Intel baytrail SOC(1.8v) and LPC(3.3v) level translator, attached is their circuit that they tried to use the 4.7k pull up resistor to 3.3v for LPC_CLK00/11 signals, and they found that the voltage level is about 1.56v that caused the LPC function doesn't work. Furthermore, they tried to change the resistor from 4.7k to 330 Ohm, the waveform shown the peak is 2.7v but the valley is 0.64v that voilate the LPC VIL spec requirement which is below 0.5v.
So, customer wants to ask product team how to tune the resistor value to achieve the waveform requirement as 3.3v peak/0v valley?
Please advise. Thanks.
Regards,
Arthur