The maximum frequency of operation for the CD74HC259M96 is 25 MHz.
To ensure proper power supply, connect VCC to a 2.0-V to 6.0-V power supply, and GND to the system ground. Decouple the power supply with a 0.1-μF capacitor.
The maximum input voltage that can be applied to the CD74HC259M96 is 6.0 V.
Unused inputs should be tied to VCC or GND through a 1-kΩ resistor to prevent floating inputs and reduce power consumption.
The recommended operating temperature range for the CD74HC259M96 is -40°C to 85°C.