Data Line Common Mode Chokes Coilcraft Data Line Common Mode Chokes provide general-purpose EMI filtering from lower-speed data rates to ultra-high speeds. These filters offer speeds that vary from USB3.x, HDMI2.0, and IEEE 1394. The data-line multi-line chokes include series of filters like general speed, high speed, CAN bus, tip and ring filters, and super high-speed filters. The data line chokes eliminate CM noise in CAN, CAN FD, and FlexRay automotive bus systems.