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System operation frequencies are increasing, PCB layout is becoming increasingly complex. A successful high-speed PCB must effectively integrate the IC’s and other components into a single design. MCS7840 has USB2.0 interface and utilize fast I/O pins. As Fast edge rates can contribute to noise generation, signal reflection, cross-talk and ground bounce; designers must be careful to handle these issues during PCB layout. This document provides guidelines for designing MCS7840 PCB’s.