The TPDxF202 devices are four or six-channel EMI filters, designed particularly to suppress EMI noise in the cell phone and other portable applications. These filters also provide a Transient Voltage Suppressor (TVS) diode circuit for Electrostatic Discharge (ESD) protection which prevents damage to the application when subjected to ESD stress far exceeding IEC 61000-4-2 (Level 4). The pi-style C-R-C filter provides symmetric filter performance in the data lines to and from either side of the filter.