Help with Open Drain output (pull-up resistor?) - All About Circuits
Aug 29, 2023 · Open drain outputs are not "useless" unless you need to pullup the output, where this is not always the case. IE: driving a simple load. This image is incorrect as it shows an …
Drive a LED with open-drain output - All About Circuits
Mar 21, 2021 · Hello, I was reading these two websites with some solutions to use an LED with an open-drain output. microcontroller - Driving a LED with an open drain digital output - Electrical …
Open drain - All About Circuits
Jan 29, 2024 · Is it correct that in I2C, 'open drain' refers to a type of output where a I2C device can only pull the signal line low (logic 0) but cannot drive it high (logic 1)? To achieve a logic …
How to define a microcontroller pin as open collector or open …
Jan 6, 2019 · You can simulate open drain by making the pin an input when it should float high and then set it to output low when the pin should be low. So this processor cannot officially do …
Open drain output LED control - All About Circuits
Nov 12, 2020 · On the open drain output there will be about 1.2 volts (IR led) when high-z situation is active. You likely would need a comparator to monitor the voltage on the open …
Open Drain circuit - All About Circuits
May 18, 2020 · Open collector/open drain means that the output pin has no dedicated load attached. You can connect +POWER -> LOAD -> OPEN COLLECTOR/OPEN DRAIN PIN The …
Drive a relay from an open-drain - All About Circuits
Sep 25, 2014 · I have a digital integrated chip (shift register) with an DMOS open-drain output (from the datasheet -> 33 V and 100 mA continuous sink-current capability) and I want to drive …
Trouble with comparator open drain output and pull-ups
Apr 25, 2019 · Hi folks, I have a circuit design and prototype that I'm working on which includes a comparator with open collect/drain outputs and I'm not sure I'm understanding exactly how to …
Protection Circuits for Input and Outputs on a PCB
Sep 11, 2023 · The input port for an open drain output just needs a pull-up resistor, a series resistor and two TVS catch diodes. R5 may or may not be needed, depending on pull-up …
Proper use of Open-Drain Output pins - All About Circuits
Sep 5, 2016 · Using an external pullup with an open-drain output only consumes power when the output is LOW. When you turn the output off, it goes to the value of the voltage on the other …