FST33X257QSP Overview
The Fairchild Switch FST33X257 is a 24:12 high-speed CMOS TTL-patible multiplexer/demultiplexer bus switch. The low On Resistance of the switch allows inputs to be connected to outputs without adding propagation delay or generating additional ground bounce noise. When OEx is LOW, the select pin connects the A Port to the selected B Port output.