Does an IC signal pin need a resistor between it and a 5 V power supply?

Discussion in 'Analog & Mixed-Signal Design' started by seanspotatobusiness, Jun 5, 2017.

  1. seanspotatobusiness

    Thread Starter Member

    Sep 17, 2016
    I want to use a laptop display inverter with an LX1686 controller. According to the datasheet the ENABLE pin has a threshold of 2.7-3.6 V. Presumably that means it will also be fine at 5 V which is the voltage required by the inverter board. I was therefore intending to connect the ENABLE pin directly to the 5 V power source. I was wondering whether that's okay or whether there ought to be a resistor between the pin and the 5 V power?
    DickCappels likes this.
  2. AlbertHall

    AAC Fanatic!

    Jun 4, 2014
    One of their example circuits shows it connected directly to the supply but it does have an internal pull-up. Below is a paragraph from the datasheet.
    seanspotatobusiness likes this.