Do I need a current limiting resistor for MAX383 digital logic?
If the MAX383 is connected to the positive 6V rail on its Vcc pin then take note of the note underneath the absolute maximum ratings in the data sheet: -


  Note 1: Signals on NC, NO, COM, or IN exceeding V+ or V- are clamped
  by internal diodes. Limit forward diode current to maximum current
  rating.


This means you are OK because the "IN" input is the digital logic control pin.

You don't need a current limiting resistor but you do need a pull-down as shown on your diagram.