Abstract: A method of capturing data that are transferred in synchronization with a data strobe signal. The method includes sampling a data strobe signal at a clock frequency higher than a data rate to detect a transition point of the data strobe signal (e.g., by generating and comparing a plurality of sampled data strobe signals), and sampling data to generate sampled data, and selecting reliable data among the sampled data based upon the transition point. A data capture circuit that captures data transferred in synchronization with a data strobe signal, includes a data strobe signal sampling circuit, a data sampling circuit, and may further include a transition position-indicating signal (case) generator and a data selection circuit. Accordingly, the method and the data capture circuit may effectively capture the data transferred in synchronization with the data strobe signal without employing or including a DLL on the chip.