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SP1485EMN-L Datasheet(PDF) 7 Page - Exar Corporation

Part # SP1485EMN-L
Description  Enhanced Low Power Half-Duplex RS-485 Transceivers
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Manufacturer  EXAR [Exar Corporation]
Direct Link  http://www.exar.com
Logo EXAR - Exar Corporation

SP1485EMN-L Datasheet(HTML) 7 Page - Exar Corporation

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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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