The maximum frequency of operation for the CD74HCU04M is 5.5 MHz.
Yes, the CD74HCU04M is compatible with 3.3V systems, but the input voltage must not exceed 3.6V.
Ensure that the power supply voltage (VCC) is within the recommended range of 2.0V to 5.5V, and that the power supply is decoupled with a 0.1uF capacitor.
The propagation delay of the CD74HCU04M is typically 10ns, but can vary depending on the operating conditions.
The CD74HCU04M is rated for operation up to 125°C, but the device's performance may degrade at high temperatures. Ensure that the device is properly heat-sinked and that the operating temperature is within the recommended range.