Mlv Design Guide Page 8 Where Are MLVs Used?
Data Line and Control Line Protection by MLV Device Built with SMD packages and wide capacitance ranges down to as low as 3pF, MLVs are widely used for data line and control line protection. Proto- cols Speed Capa- citance Require- ments Threats MLA Device Advantage USB1.1 12MHz 50pF ESD MLA USB2.0 480MHz 3pF ESD MHS for D+/D- line All MLV for DC line USB3.0 5GHz 0.1pF ESD MHS for D+/D- line All MLV for DC line HDMI 3GHz 0.2pF ESD MLV for DC line CAN bus 100kHz 100pF ESD, Load Dump Auto grade MLV LIN 100kHz 100pF ESD, Load Dump Auto grade MLV RS-232 10kHz 1000pF ESD All MLV Series Table 5. Port Protection Summary Data line transmission requires both signal integrity and safe levels for IC protection. The MLV device structure provides capacitance levels ranging from 3pF to 500pF, depending on product series. This characteristic makes MLV devices ideal for low speed and control line protection (Figure 13). Some MLV Series, such as the MHS Series, can protect data line speed up to 500MHz. Figure 12. MLV Protection in Touch Screen Circuit Figure 13. Data Line or Control Line Protection Low Speed I/O or Control Line Sensitive IC Chassis Ground Surface Mount Multilayer Varistors (MLVs) Design Guide 2016 Littelfuse Multilayer Varistors (MLVs) Design Guide www.littelfuse.com Where Are MLVs Used? (continued) 8Previous Page