2020-05-03 7:35 PM
The L6387ED datasheet indicates that the high level logic threshold is 3.6V as a minimum.
https://www.st.com/resource/en/datasheet/l6387e.pdf#page=7
The STM ESC eval kit (P/N: B-G431B-ESC1) definitely uses the L6387ED. We checked schematics and a some physical samples.
https://www.st.com/resource/en/schematic_pack/mb1419-g431cb-b01_schematic.pdf#page=4
However, the STM32G4 in the B-G431B-ESC1 only supplies 3.3V logic to the L6387ED.
We would like to use L6387ED in our product but only if it’s actually rated for 3.3V logic.
We’re moving the ST Community to a new platform to give you a better and more reliable community experience.