The maximum frequency of operation for the SN74HC4066D is 30 MHz.
Yes, the SN74HC4066D can be used as a level shifter, but it's not recommended as it's not designed for that purpose. It's primarily intended for analog switching applications.
To ensure the SN74HC4066D switches quickly and cleanly, make sure to provide a clean and stable power supply, use a low-ESR capacitor for decoupling, and minimize the PCB trace lengths and impedance.
The maximum voltage rating for the SN74HC4066D is 7 V. Exceeding this voltage may cause damage to the device.
The SN74HC4066D is rated for operation up to 125°C. However, it's recommended to derate the device's performance and consider thermal management when operating in high-temperature environments.