HD74HC253 - Dual 4-to-1-line Data Selectors/Multiplexers (with 3-state outputs)
HD74HC253 Features
* of this device make it ideally suited for interfacing with bus lines in bus organized systems. When the output control input is taken high, the multiplexer outputs are sent into a high impedance state. When the output control is held low, the associated multiplexer chooses the correct output channel
