Patent ID: 6040734
Filing Date: 2000-03-21
Classification: G11C,H03K

Abstract:
In an electrically programmable non-volatile memory device, a circuit having a ground voltage reference and a plurality of branch circuits for switching between a plurality of voltage supplies other than the ground voltage reference, each branch circuit being coupled between a respective one of the voltage supplies and a terminal coupled to an element in the memory device to receive one of the voltage supplies other than the ground voltage reference, at least one of the branch circuits comprising:a bridge circuit coupled between one of the voltage supplies and the terminal coupled to the element in the memory device, the bridge circuit comprising a first pair of first and second transistors coupled in series between the voltage supply and the terminal and a second pair of third and fourth transistors coupled in series between the voltage supply and the terminal, wherein the third and fourth transistors comprise transistors of a P-channel type; anda pair of resistors coupled in series between the third and fourth transistors of the second pair of transistors.