The Recommended Operating Conditions: SN54LVCH245A table shows the power supply can be any voltage between the minimum and maximum supply voltage rating that are listed.

Each V_CC pin should have a good bypass capacitor to prevent power disturbance. For devices with a single supply, 0.1 µF is recommended; if there are multiple V_CC pins, then 0.01 µF or 0.022 µF is recommended for each power pin. It is acceptable to parallel multiple bypass capacitors to reject different noise frequencies. A 0.1 µF and a 1 µF are commonly used in parallel. The bypass capacitor should be installed as close to the power pin as possible for best results.