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About pull down resister of DS92LV0421 / DS92LV0422

Satoshi
Guru 19595 points

Please let me know about internal pull down  resister value of control and configuration pin.

(Datasheet writtten in "LVCMOS W/ pull-down")

I think that these pin (ex. PDB pin) have internal resister, but it isn't written in datasheet.

※If it was my mistake reading, are correct external resister?

 

Best regards,

Satoshi

  • 0
    TI__Guru* 93670 points
    Greetings Satoshi-San,

    These are very high value Resistors. Based on the data sheet, the high level input voltage could be at maximum, 3.6V, and the maximum input current is 15uA. Therefore the resistor is about 3.6V/15uA = 240K Ohm at minimum. We should also allow process variation to change the value of these Resistors by about 20 to 30%.

    Regards,,nasser