Patent ID: 8890576

Claim:
An input/output sense amplifier comprising: a data input unit configured to amplify data through inverters and to output the amplified data; and a latch unit configured to receive the amplified data and configured to latch and output an output signal of the data input unit to an output terminal, wherein the data input unit comprises: a first inverter configured to amplify the data, which is inputted through a first local transmission line, using a driving voltage, and to output the amplified data; a second inverter configured to amplify the data, which is inputted through a second local transmission line, using the driving voltage, and to output the amplified data; and a sink unit connected to the first and second buffer units and configured to allow current to flow toward a ground voltage in response to the strobe signal, wherein the first inverter comprises; a first PMOS transistor connected to a driving voltage terminal; and first NMOS transistor connected between the first PMOS transistor and the sink unit, wherein the first PMOS transistor and the first NMOS transistor are driven in response to the data and a connecting node between the first PMOS transistor and the first NMOS transistor is connected to the latch unit.