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Bench Talk for Design Engineers

Bench Talk

Bench Talk for Design Engineers | The Official Blog of Mouser Electronics

Pull Up Your Pins: How to Size Pull-up Resistors

On October 31, 2018 in All, Circuit Protection by Mike Parks

Whether to prevent floating I/O pins on an MCU or to provide an interface between two circuits, pull-up resistors are a necessity. But what size resistor should you use?

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Tagged With: Open drain, Open drain applications, Open drain topology, Pull-up resistors, Resistors

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Mouser® and Mouser Electronics® are trademarks of Mouser Electronics, Inc. in the U.S. and/or other countries. All other trademarks are the property of their respective owners. Corporate headquarters and logistics centre in Mansfield, Texas USA.

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Copyright ©2026 Mouser Electronics, Inc.

Mouser® and Mouser Electronics® are trademarks of Mouser Electronics, Inc. in the U.S. and/or other countries. All other trademarks are the property of their respective owners. Corporate headquarters and logistics centre in Mansfield, Texas USA.