This datasheet is about PI5C3390 and PI5C32390, These two products are 16-to-8 multiplexer/demultiplexer bus switches with a low On-Resistance, allowing inputs to be connected directly to outputs. The two enable inputs connect each of eight I/O to the common I/O pin. This multiplexer function can be used to select and route logic signals to form crossbar switches, isolate bus capacitance, or provide a zero delay switch connection. The bus switch has ultra-low quiescent power, which is ideal for notebook applications.