The maximum operating frequency of the SN74AC245DBR is 100 MHz, but it can vary depending on the output load and supply voltage.
Yes, the SN74AC245DBR can operate with a supply voltage as low as 2V, but the output voltage levels may not be as high as when operated at 5V.
The enable pins (1G, 2G) are active-low, meaning that the device is enabled when the pins are low. Tie the enable pins to GND or a low-level signal to enable the device.
The propagation delay of the SN74AC245DBR is typically around 10-15 ns, but it can vary depending on the operating conditions and output load.
Yes, the SN74AC245DBR can be used as a level translator between 5V and 3.3V systems, but ensure that the input voltage levels are within the recommended operating range.