To date I have been driving this device using an ATMega328P, running at 5V, with no problems.
I now have to switch to a 3.3V microcontroller for other reasons out of my control.
I am hoping that I don't have to add logic level adjustment circuitry. Reading the datasheet the input high threshold is 2.4V(typ.) to 3.15V when Vcc is 4.5V. Being that the 74HC245 IC is supplied by 5V, I am concerned that 3.3V logic out of the microcontroller is going to be right on the limit.
Will I be able to get away without any logic level adjustment circuitry?