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LSF0204-Q1: The questions on multiple voltage translation in single device

Ted Xu
Expert 3545 points
Part Number: LSF0204-Q1

Hi BU team

Would you help double check whether application in figure 8-4 in the datasheet is right?

what's the VOL/VOH or VIL/VIH  for B3/4 ?

what's the VOL/VOH or VIL/VIH for B1/2?

Thanks

  • 0
    Guru 251920 points

    The pull-up voltages do not need to be the same as Vref_A or Vref_B; the only limitation is that no voltage must be lower than Vref_A. (This is an error in that figure.)

    The LSF does not have digital inputs or outputs, so there are no VIx/VOx specifications. For voltages below Vref_A, it behaves like an analog switch. (When the switch is closed, it directly connects the A and B sides; its resistance is specified by ron.)

  • 0 in reply to Clemens Ladisch
    TI__Mastermind 43050 points

    Hi Ted,

    Yes this image is incorrect, I believe its supposed to say 5 V. These training videos on the LSF family will cover how these devices function and should help with implementation.