The following application note provides a detailed description of the CY7B991, CY7B9911, and CY7B992 Programmable Skew Clock Buffers (PSCB). It also provides an overview of clock distribution and transmission line analysis. Some of the information applies to the CY7B9910/20 (Robo Jr.) and CY7B9911V/1V devices as well. This application note is divided into the following sections: • General Description • Clock Distribution • System Design Considerations • Detailed Device Description • AC Specifications • AC Characterization • DC Specifications