Level shifters, voltage translators: whatever you call them, these devices are very handy when interfacing 5V and 3.3V logic for devices that aren’t 5V-tolerant. The 74LVC244 has long been my go-to solution for unidirectional 5V to 3.3V level shifting, and for 3.3V to 5V I’ll typically do nothing, since the 5V inputs generally work OK
