Abstract: A data receiver circuit may include: a delay circuit suitable for delaying first and second strobe signals and generating delayed first and second strobe signals; a first receiver circuit suitable for sampling data in synchronization with the delayed first strobe signal; a second receiver circuit suitable for sampling the data in synchronization with the delayed second strobe signal; an enable signal generation circuit suitable for generating an enable signal indicating whether the data transitioned; a transition level generation circuit suitable for generating a transition level signal indicating a transition direction of the data; a phase shift circuit suitable for shifting the phase of the delayed first strobe signal by a set degree and generating a shifted first strobe signal; a sampling circuit suitable for sampling the data in synchronization with the shifted first strobe signal and generating a sampling result; and a control logic suitable for changing a delay value of the delay circuit in response to