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SM16LC03C Folha de dados(PDF) 4 Page - Protek Devices |
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SM16LC03C Folha de dados(HTML) 4 Page - Protek Devices |
4 / 5 page 4 www.protekdevices.com 05051.R10 4/05 SM16LC03 thru SM16LC36C APPLICATION NOTE The SM16LC & SM16LCxxC Series are TVS arrays designed to protect I/O or data lines from the damaging effects of ESD, EFT and other types of surges. This product series provides both unidiretional and bidirectional protection, with a surge capability of 500 Watts P PP per line for an 8/20µs waveform and ESD protection > 40kV. BIDIRECTIONAL COMMON-MODE CONFIGURATION (Figure 1) Ideal for RS-485 applications, the SM16LCxxC Series provides up to eight (8) lines of protection in a common-mode configuration as depicted in Figure 1. This low capacitance series allows the transceiver or telecommunications circuit to operate safely without significant signal distortion. Circuit connectivity is as follows: ✔ Lines 1 is connected to Pin 9. ✔ Line 2 is connected to Pin 10. ✔ Line 3 is connected to Pin 11. ✔ Line 4 is connected to Pin 12. ✔ Line 5 is connected to Pin 13. ✔ Line 6 is connected to Pin 14. ✔ Line 7 is connected to Pin 15. ✔ Line 8 is connected to Pin 16. ✔ Pins 1-8 are connected to ground. CIRCUIT BOARD LAYOUT RECOMMENDATIONS Circuit board layout is critical for Electromagnetic Compatibil- ity (EMC) protection. The following guidelines are recom- mended: ✔ The protection device should be placed near the input terminals or connectors, the device will divert the transient current immediately before it can be coupled into the nearby traces. ✔ The path length between the TVS device and the protected line should be minimized. ✔ All conductive loops including power and ground loops should be minimized. ✔ The transient current return path to ground should be kept as short as possible to reduce parasitic inductance. ✔ Ground planes should be used whenever possible. For multilayer PCBs, use ground vias. Figure 1. Birectional Common-Mode Protection 9 10 11 12 13 14 15 16 1 2 3 4 5 6 7 8 TRANSCEIVER D D R R LINE 1 LINE 2 LINE 3 LINE 4 LINE 5 LINE 6 LINE 7 LINE 8 |
Nº de peça semelhante - SM16LC03C |
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Descrição semelhante - SM16LC03C |
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