+ Post New Thread
Results 1 to 5 of 5
  1. #1
    Junior Member level 1
    Points: 335, Level: 3

    Join Date
    May 2018
    Posts
    17
    Helped
    0 / 0
    Points
    335
    Level
    3

    CD4053 connect unused pins

    Hi,
    in a cd4053 I do not used some pins (input and output).

    How should I connect them?

    •   AltAdvertisement

        
       

  2. #2
    Super Moderator
    Points: 260,136, Level: 100
    Awards:
    1st Helpful Member

    Join Date
    Jan 2008
    Location
    Bochum, Germany
    Posts
    45,435
    Helped
    13822 / 13822
    Points
    260,136
    Level
    100

    Re: CD4053 connect unused pins

    The analog switch terminals can be left floating without problems. Or connect them to ground.


    1 members found this post helpful.

    •   AltAdvertisement

        
       

  3. #3
    Super Moderator
    Points: 77,637, Level: 67
    Achievements:
    7 years registered
    Awards:
    Most Frequent Poster 3rd Helpful Member

    Join Date
    Apr 2014
    Posts
    15,725
    Helped
    3586 / 3586
    Points
    77,637
    Level
    67

    Re: CD4053 connect unused pins

    Hi,

    Sadly you don't tell which pins these are...

    Dedicated CMOS input pins (control pin) should not be left floating.

    Klaus
    Please don´t contact me via PM, because there is no time to respond to them. No friend requests. Thank you.


    1 members found this post helpful.

    •   AltAdvertisement

        
       

  4. #4
    Full Member level 6
    Points: 1,992, Level: 10

    Join Date
    Jan 2019
    Posts
    372
    Helped
    92 / 92
    Points
    1,992
    Level
    10

    Re: CD4053 connect unused pins

    no input pin should be left unconnected - analog or digital

    when I have the space, i like putting in a 0 ohm jumper to ground on a pin by pin basis
    just in case, if i need an extra ???, its relatively easy to remove the jumper and put in a wire.


    1 members found this post helpful.

  5. #5
    Advanced Member level 5
    Points: 14,928, Level: 29
    schmitt trigger's Avatar
    Join Date
    Apr 2013
    Posts
    2,480
    Helped
    804 / 804
    Points
    14,928
    Level
    29

    Re: CD4053 connect unused pins

    Excellent advice.
    My batteries are recharged by "Helpful Post" ratings.
    If you feel that I've helped you, please indicate it as a Helpful Post



--[[ ]]--