[sdiy] best way to buffer digital out and convert 3V3 to 5V

[Colin f]

> Lets say I've got a 3V3 microcontroller and want to buffer 
> its outputs and bring them up to 5V (or more).
> For example use a GPIO of a stm32 to generate 5V trigger 
> signals for external gear.
> What would be the best way of doing this?

You can use 74HCT series buffers. The 'T' means TTL compatible thresholds,
which work nicely with 3v3 logic.
e.g. 74HCT244 is an octal buffer/line driver.
 
Cheers,
Colin f