A data receiver is provided for stabilizing a reference voltage to which input data is compared. The data receiver includes a differential amplification flip flop for comparing input data to a reference voltage in response to a clock signal, an amplifier for amplifying the results of the comparison, a latch for storing the logic level of the input data, and a counter coupling circuit for reducing the variation of the reference voltage caused by the operation of the differential amplification flip flop in response to an inverted clock signal. In the data receiver, the reference voltage is stably preserved without minimized variation. Also, there is substantially no consumption of direct current (DC) when the data receiver operates.