![](https://cos-cdn.shuashuati.com/pipixue-wap/2020-1230-1107-56/ti_inject-812ce.png)
A Clock Buffer is a device in which the output waveform directly follows the input waveform. The input waveform propagates through the device and is redriven by the output buffers. Hence, such devices have a propagation delay associated with them. In addition, due to the differences between the propagation delay through the device on each input-output path, skew will exist on the outputs.