The 74CB3Q3253 is a dual high-bandwidth single-pole, quad-throw FET bus switch. Each switch features a select input (Sn) and an output enable input (nOE). The switch is disabled when thenOEinput is HIGH. An internal charge-pump increases the gate voltage of the NMOS pass transistor. The result is improved RONand RON(flat)performance and the ability to switch 5 V signals when VCC= 3.3 V.