Why would you want an open collector or open drain output? While push-pull GPIOs may be more common, open-collector or open-drain outputs can be used for various reasons. One strength of open collector outputs is their ability to sink current. In this short, Josh discusses some of the strengths and weaknesses of this topology. #circuits #engineering #askanengineer #asktheexpert #stemeducation #semiconductor #analog #stem #howto #circuitbread #eefaq #circuitsnacks #instafacts #trivia #engineering