USB3300 SMSC Corporation, USB3300 Datasheet - Page 48
USB3300
Manufacturer Part Number
USB3300
Description
Hi-Speed USB Host
Manufacturer
SMSC Corporation
Datasheet
1.USB3300.pdf
(49 pages)
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Revision 1.06 (07-19-06)
7.4.2
7.4.2.1
7.4.2.2
IEC61000-4-2 Performance
The IEC61000-4-2 ESD specification is an international standard that addresses system-level immunity
to ESD strikes while the end equipment is operational. In contrast, the HBM ESD tests are performed
at the device level with the device powered down.
SMSC contracts with independent laboratories to test the USB3300 to IEC61000-4-2 in a working
system. Reports are available upon request. Please contact your SMSC representative, and request
information on 3rd party ESD test results. The reports show that systems designed with the USB3300
can safely dissipate ±15kV air discharges and ±8kV contact discharges per the IEC61000-4-2
specification without additional board level protection.
Both air discharge and contact discharge test techniques for applying stress conditions are defined by
the IEC61000-4-2 ESD document.
AIR DISCHARGE
To perform this test, a charged electrode is moved close to the system being tested until a spark is
generated. This test is difficult to reproduce because the discharge is influenced by such factors as
humidity, the speed of approach of the electrode, and construction of the test equipment.
CONTACT DISCHARGE
The uncharged electrode first contacts the pin to prepare this test, and then the probe tip is energized.
This yields more repeatable results, and is the preferred test method. The independent test laboratories
contracted by SMSC provide test results for both types of discharge methods.
DATASHEET
Hi-Speed USB Host, Device or OTG PHY with ULPI Low Pin Interface
48
SMSC USB3300
Datasheet