The maximum frequency of operation for the CD74HCT245E is 50 MHz.
Yes, the CD74HCT245E can operate with a 5V power supply, but it is recommended to use a 3.3V or 2.5V power supply for optimal performance.
The enable pins (1E and 2E) are active-low, meaning they need to be pulled low to enable the corresponding bus. When not in use, the enable pins should be pulled high to disable the bus.
The propagation delay of the CD74HCT245E is typically around 10-15 ns, but this can vary depending on the operating conditions and load capacitance.
Yes, the CD74HCT245E can be used as a level shifter, but it is not recommended as it is not designed for this purpose. Instead, use a dedicated level shifter IC for optimal performance.