Data storage circuits using a low threshold voltage output enable circuit

摘要

A data storage circuit (50) has a data input (12') for receiving a data voltage (D'') and a node (44) for receiving an interim voltage in response to the data voltage. The data storage circuit also includes an output enable circuit (34) for providing at least one conditional path coupled to the node and for coupling the interim voltage to the node. The output enable circuit has a transistor (40p) having a first threshold voltage and operable to provide a conductive path along the at least one conditional path. The data retention circuit (46 and 48) has at least one transistor having a second threshold voltage higher in magnitude than the first threshold voltage. The data storage circuit includes a second node (58) for receiving a second interim voltage in response to the first interim voltage. A second output enable circuit (52) provides at least one conditional path for coupling the second interim voltage to the second node. A second data retention circuit (60 and 62) is coupled between the second node and the data storage circuit output.