I have an anemometer that runs on a 5V input, which I generate from a boost converter, and returns a pulsed signal from an optical chopper in the anemometer. I need to step down this pulsed signal from 5V to 3.3V for the Mesh devices so I’m wondering if logic-shifting MOSFETs (e.g. a BSS138) are suitable for this or if something like a simple voltage divider is better. The fastest pulses are ~10-15ms apart. Thanks for your feedback.