How to Use Logic Level Shifters – ATM | Digi-Key Electronics

Mainstay 5 V logic is joined by ever lower voltage standards like 3.3 V, 2.5 V, 1.8 V and lower. Mismatched systems require level shifting to reliably and efficiently communicate across logic voltages.

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How to Use Logic Level Shifters – ATM | DigiKey

In this video, translation/isolation between differing binary or two-stage logic voltages are demonstrated using MOSFET circuits as well as some primitive methods using resistors and rectifier diodes. Multiple communication lines such as those used for SPI communication are also discussed with a quick reference to isolated translation circuits using MOSFETs.