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SMS12C Datasheet(PDF) 5 Page - Semtech Corporation |
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SMS12C Datasheet(HTML) 5 Page - Semtech Corporation |
5 / 7 page 5 2004 Semtech Corp. www.semtech.com PROTECTION PRODUCTS SMS05C through SMS24C SMSxxC Circuit Diagram Protection of Five Unidirectional Lines Device Connection for Protection of Five Data Lines The SMSxxC is designed to protect up to five unidirec- tional data lines. The device is connected as follows: 1. Unidirectional protection of five I/O lines is achieved by connecting pins 1, 3, 4, 5 and 6 to the data lines. Pin 2 is connected to ground. The ground connection should be made directly to the ground plane for best results. The path length is kept as short as possible to reduce the effects of parasitic inductance in the board traces. Circuit Board Layout Recommendations for Suppres- sion of ESD. Good circuit board layout is critical for the suppression of ESD induced transients. The following guidelines are recommended: Place the SMSxxC near the input terminals or connectors to restrict transient coupling. Minimize the path length between the SMSxxC and the protected line. Minimize all conductive loops including power and ground loops. The ESD transient return path to ground should be kept as short as possible. Never run critical signals near board edges. Use ground planes whenever possible. Applications Information |
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Similar Description - SMS12C |
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