The Intersil ISL76120 dual 2:1 multiplexer IC is a single
supply part that can operate from a single 2.7V to 5.5V supply.
It contains two SPDT (Single Pole/Double Throw) switches
configured as a DPDT. The part was designed for switching
between USB High-Speed and USB Full-Speed sources in
portable battery powered products.
The normally-closed (NC) FSx switches can swing rail-to-rail
and were specifically designed to pass USB full speed data
signals (12Mbps) that range from 0V to 3.6V. The normallyopen
(NO) HSx switches have high bandwidth and low
capacitance and were specifically designed to pass USB high
speed data signals (480Mbps) with minimal distortion.
The part can be used in a variety of automotive entertainment
and infotainment applications where consumer USB devices
such as Portable Media Players (PMPs) are to be connected
to embedded systems. The product allows switching between
a high-speed transceiver and a full-speed transceiver while
connected to a single USB host. Additionally the part can be
used for charge control of PMPs.