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LSF0204: no RPU

Jeff YANG
Mastermind 7865 points
Part Number: LSF0204

Tool/software:

Hi,

If our design forgot using RPU, and it cause B side voltage level only ~1.13V,

May I know the minimum voltage level? And it may have reverse risk when only B side voltage level higher than A side? Thanks!

Jeff

  • +1
    Guru 316960 points

    For all voltages below Vref_A, the LSF works like an analog switch. For voltages at or above Vref_A, the switch is open, and the output voltage is determined by the pull-up  resistor.

    Translation from B to A might work without a pull-up on the A side (but it would be more robust with one). Translation from A to B will not work without a pull-up on the B side; the output voltage will not be higher than the input voltage.