An alternative method to ensure that inputs never float is to use devices with built-in bus-hold circuits. The bus-hold circuit latches in the last logic state that was applied to the input pin. If the source driving the input pin is removed or disabled, the bus-hold circuit continues to hold the CMOS input buffer at either V_CC or ground. The delta I_CC is reduced to zero and there is no risk of unwanted switching or oscillation. Devices with built-in bus-hold reduce the bill of materials and footprint of a design by eliminating the need for external components.