A bus driving device includes at least three high-side output drivers and at least three low-side output drivers. A part of the high-side output drivers and a part of the low-side output drivers are alternately coupled in series, and the remains of the high-side output drivers and the low-side output drivers are alternately coupled in series. The part of the high-side output drivers and the part of the low-side output drivers receive an input digital signal and sequentially drive a first supply bus and a second supply bus based on the input digital signal, and the remains of the high-side output drivers and the low-side output drivers receive the inverted input digital signal and sequentially drive the first supply bus and the second supply bus based on the inverted input digital signal.