US Patent 7148737 Semiconductor switching circuit

The invention discloses a semiconductor switching circuit suitable for a Single Pole n Throw (SPnT) switching circuit having: a common terminal; first through third terminals, ground and control terminals, through FETS, shunt FETs, wherein when a first electric potential is supplied only to a Jth control terminal, and a second lower electric potential is supplied to the other control terminals, the common and Jth terminals are electrically connected and the first through third terminals are electrically disconnected.