Patent ID: 7633794
Filing Date: 2009-12-15
Classification: G11C

Abstract:
1. A memory comprising: a sense amplifier comprising a first plurality of tri-state inverters configured to couple a digit line to an input bus and a second plurality of tri-state inverters configured to couple the digit line to an output bus; and a memory cell coupled to the digit line, comprising: a first inverter having a first supply terminal coupled to a voltage supply and a first ground terminal coupled to ground, and further having a first input and a first output, the first inverter configured to generate a first output signal at the first output that is the complement of a first input signal in response to receiving the first input signal at the first input; a second inverter having a second supply terminal and a second ground terminal, and further having a second input coupled to the first output and a second output coupled to the first input, the second inverter configured to generate a second output signal at the second output that is the complement of the first output signal in response to a supply voltage coupled to the second supply terminal and ground coupled to the second ground terminal; a first switch having a first node coupled to the voltage supply and a second node coupled to the second supply terminal and further having a control node to which a first read signal is applied, the first switch configured to couple the first and second nodes in response to an active first read signal; a second switch having a first node coupled to the second ground terminal and a second node coupled to ground and further having a control node to which a second read signal is applied, the second switch configured to couple the first and second nodes in response to an active second read signal; and an access transistor having a first node coupled to the second output, a second node coupled to the digit line, and a control node to which an access signal is applied, the access transistor configured to couple the first and second nodes in response to an active access signal.