The maximum frequency of operation for the CD74HC4051M96 is 10 MHz.
Yes, the CD74HC4051M96 can operate with a 5V power supply, but it is recommended to use a 3.3V or lower power supply for optimal performance.
To properly power down the CD74HC4051M96 when not in use, ensure that the VCC pin is connected to a power supply that can be switched off, and that the EN (enable) pin is tied to a logic low level.
The CD74HC4051M96 can sink or source up to 25 mA of current per channel.
Yes, the CD74HC4051M96 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.