An apparatus may include a first data strobe (DQS) output buffer (OB), a second DQS OB and control logic. The first data strobe (DQS) output buffer (OB) and the second DQS OB are each coupled to a DQS terminal. The first DQS OB and the second DQS OB are configured to provide a DQS signal to the DQS terminal responsive to a read clock signal. The control logic is configured to receive the read clock signal to control the first DQS OB and the second DQS OB. The apparatus is configured to selectively prevent the control logic from receiving the read clock signal while the DQS signal is being provided to the DQS terminal.