The power supply can be any voltage between the minimum and maximum supply voltage rating (see Recommended Operating Conditions).
Each VCC pin must have a good bypass capacitor to prevent power disturbance. TI recommends 0.1 µF for devices with a single supply. If there are multiple VCC pins, then TI recommends 0.01 µF or 0.022 µF for each power pin. It is acceptable to parallel multiple bypass capacitors to reject different frequencies of noise. A 0.1 µF and a 1 µF are commonly used in parallel. The bypass capacitor must be installed as close to the power pin as possible for best results.