Patent ID: 6282138
Filing Date: 2001-08-28
Classification: G11C

Abstract:
A sense amplifier comprising:a differential amplifier having a pair of differential input terminals for receiving a bitline bus signal and its complement and a pair of differential output terminals for outputting the bitline bus signal and its complement in a differentiated manner;pre-charge circuitry coupled to the pairs of differential input and output terminals of the differential amplifiers for selectively pre-charging the pairs of differential input and output terminals in response to a pre-charge signal; andtri-state output circuitry having a pair of input terminals coupled to the pair of differential output terminals of the differential amplifier for receiving the differentiated bitline bus signal and its differentiated complement and having a pair of complementary output terminals for outputting an internal data bus signal and its complement in response to the differentiated bitline bus signal and its differentiated complement, the pair of complementary output terminals being capable of attaining a high-impedance state in response to a tri-state initiating signal.