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LSF0204: LSF0204 Enable select & Rpu level

Part Number: LSF0204

Hi Sir,

Our customer want to use the LSF0204 on LPC(Low pin count Bus) bus,

is need Rpu on Signal Pin?

if Vref_A=3.3V & Vref_B=5V, then EN connect to 3.3 or 5V?

LSF0204 Datasheet is connect to Vref_A, But LSF010x datasheet is connect to Vref_B.

Hugo

  • Hi Hugo,

    If the master I/O or the slave I/O are open drain then a Rpu is required.
    Do note however, if either output is push-pull, data must be unidirectional or the outputs must be 3-state and be controlled by some direction-control mechanism to prevent HIGH-to-LOW contentions in either direction. If both outputs are open-drain, no direction control is needed.

    The EN input circuit is designed to be supplied by Vref_A.
    LSF010 is a different part and so has different specifications. They should not be mixed with the LSF0204.

    Thanks!
    -Karan
  • In reply to Karan Kotadia:

    Hi Karan,

    Thanks for your response.

    Hugo

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