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SP489E Datasheet(PDF) 6 Page - Sipex Corporation |
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SP489E Datasheet(HTML) 6 Page - Sipex Corporation |
6 / 10 page 6 SP488E/489EDS/07 SP488E/489E Enhanced Quad RS-485/RS-422 Line Receivers © Copyright 2000 Sipex Corporation R RC C C CS S R RS S SW1 SW1 SW2 SW2 RC Device Under Test DC Power Source CS RS SW1 SW2 Figure 5. ESD Test Circuit for Human Body Model R RS S and and R RV V add up to 330 add up to 330 Ω Ω ffor IEC1000-4-2. or IEC1000-4-2. RS and RV add up to 330Ω for IEC1000-4-2. Contact-Discharge Module Contact-Discharge Module R RVV R RC C C CSS R RSS SW1 SW1 SW2 SW2 RC Device Under Test DC Power Source CS RS SW1 SW2 RV Contact-Discharge Module Figure 6. ESD Test Circuit for IEC1000-4-2 ESD TOLERANCE The SP488E and SP489E devices incorporate ruggedized ESD cells on all driver output and receiver input pins. The ESD structure is improved over our previous family for more rugged applications and environments sensitive to electro-static discharges and associated transients. The improved ESD tolerance is at least +15kV without damage nor latch-up. There are different methods of ESD testing applied: a) MIL-STD-883, Method 3015.7 b) IEC1000-4-2 Air-Discharge c) IEC1000-4-2 Direct Contact The Human Body Model has been the generally accepted ESD testing method for semiconductors. This method is also specified in MIL-STD-883, Method 3015.7 for ESD testing. The premise of this ESD test is to simulate the human body’s potential to store electro-static energy and discharge it to an integrated circuit. The simulation is performed by using a test model as shown in Figure 5. This method will test the IC’s capability to withstand an ESD transient during normal handling such as in manufacturing areas where the ICs tend to be handled frequently. The IEC-1000-4-2, formerly IEC801-2, is generally used for testing ESD on equipment and systems. For system manufacturers, they must guarantee a certain amount of ESD protection since the system itself is exposed to the outside |
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Similar Description - SP489E |
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