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2003MAY29_ID_PD_POW_AN2.pdf

  • 2013-09-29
  • 216.01KB
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              2003MAY29_ID_PD_POW_AN2BRIEFESD Protection USB 2.0 Data LinesUSB 2.0 Product Circuit BoardTECHUSB 2.0 ConnectorPWR GND D+ D-For high-speed protocols like that of USB 2.0 (480 Mbps), suppressors with extremely low capacitance levels should be used. Suppressors with high capacitance can affect the data stream by distorting the data waveforms Littelfuse offers PulseGuard ESD suppressors as a solution for USB 2.0 data line ESD protection. These products are surface mount devices with 0.050 pF of capacitance. So they will provide ESD protection and maintain the integrity of the data signals. Examples of USB 2.0 products which can benefit from ESD protection include:  Computers (desktops and laptops)  Peripherals (printers, scanners, etc.)  Handheld devices (PDA’s, cell phones, MPEG players, etc.)  Repeaters……             

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