2020-05-03 07:35 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.