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AN1702 Datasheet(PDF) 10 Page - STMicroelectronics |
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AN1702 Datasheet(HTML) 10 Page - STMicroelectronics |
10 / 11 page ESD protection AN1702 10/11 8 ESD protection Common situations such as handling, connection and maintenance can create electro-static discharges (ESD), which can damage related devices. The use of transceivers with high ESD immunity in e-meter applications is recommended. In order to evaluate ESD immunity, two standards are largely used at this time: the JEDEC standard (Human Body Model), which simulates the ESD of a human body contacting the device, and the ISO standard (IEC 61000-4-2), which simulates the ESD of a human body handling a tool (screwdriver, or a metallic connector, etc.), approaching (Air Discharge) or contacting (Contact Discharge) the device. The IEC 61036 standard requires that the device be immune to contact discharges (ISO IEC 61000-4-2) of 8 kV, while the DL/T 645 standard requires meter equipments to tolerate 15 kV (HBM) discharges. The ST485EB is compliant to both these specifications. 9 Revision history Table 1. Revision history Date Revision Changes 11-Sep-2006 1 First release 28-Sep-2007 2 – No content changes, document reformatted. – ST485ER replaced by ST485EB |
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