Patent ID: 6584035
Filing Date: 2003-06-24
Classification: G11C

Abstract:
A column select circuit having a pass transistor and further having a driver circuit coupled to supply a gate bias to a gate of the pass transistor, wherein the driver circuit comprises:an output coupled to the gate of the pass transistor; an unfiltered path having a first potential node coupled to receive a first supply potential, and a first field-effect transistor interposed between the first potential node and the output; and a filtered path having a second potential node coupled to receive a second supply potential, and a second field-effect transistor interposed between the second potential node and the output; wherein the driver circuit has a first state to couple the gate of the pass transistor to the second potential node through the filtered path and to isolate the gate of the pass transistor from the first potential node; wherein the driver has a second state to couple the gate of the pass transistor to at least the first potential node through the unfiltered path; and wherein the driver has a third state to isolate the gate of the pass transistor from both the first potential node and the second potential node.