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SP1485EMN-L Datasheet(PDF) 7 Page - Exar Corporation |
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SP1485EMN-L Datasheet(HTML) 7 Page - Exar Corporation |
7 / 10 page 7 Exar Corporation 48720 Kato Road, Fremont CA, 94538 • 50-668-707 • www.exar.com SP48E-485E_00_06609 The IEC-1000-4-2, formerly IEC801-2, is generallyusedfortestingESDonequipment andsystems.Forsystemmanufacturers, theymustguaranteeacertainamountofESD protectionsincethesystemitselfisexposed totheoutsideenvironmentandhumanpres- ence.ThepremisewithIEC1000-4-2isthat thesystemisrequiredtowithstandanamount ofstaticelectricitywhenESDisappliedto pointsandsurfacesoftheequipmentthat areaccessibletopersonnelduringnormal usage.ThetransceiverICreceivesmost oftheESDcurrentwhentheESDsource isappliedtotheconnectorpins.Thetest circuitforIEC1000-4-2isshownonFigure8. TherearetwomethodswithinIEC1000-4-2, theAirDischargemethodandtheContact Dischargemethod. Figure7.ESDTestCircuitforHumanBodyModel Figure8.ESDTestCircuitforIEC1000-4-2 RC CS RS SW1 SW2 RC Device Under Test DC Power Source CS RS SW1 SW2 RS and RV add up to 330 for IEC1000-4-2. RS and RV add up to 330 for IEC1000-4-2. Contact-Discharge Module RV RC CS RS SW1 SW2 RC Device Under Test DC Power Source CS RS SW1 SW2 RV Contact-Discharge Module |
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