SparkFun will be closed Nov 26th and 27th for the Thanksgiving holiday. Orders placed after 2:00pm MT on the 25th will ship out Monday the 30th.


Member Since: October 6, 2008

Country: United States

  • Hi,
    You are saying:
    This circuit will not work the other direction (high voltage to low voltage) because of the internal diode within the MOSFET will forward bias.
    But the AppNote you are pointing too explain in chapter 2.3.1 that the circuitry can be used as a bidirectional shifter… They are saying that a level 0 on the TX-5V side will forward conduct the internal diode, and this will start to raise Vgs to the point it will start to conduct and drive the TX-3.3V node to 0V.
    Could you comment?

No public wish lists :(