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LC05-6TB Arkusz danych(PDF) 4 Page - Semtech Corporation |
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LC05-6TB Arkusz danych(HTML) 4 Page - Semtech Corporation |
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4 / 7 page  4 ã 2000 Semtech Corp. www.semtech.com PROTECTION PRODUCTS LC05-06 Figure 1 - Connection for Differential (Line-to-Line) Protection of two Tip/Ring Line Pairs Device Connection Options for Protection of Two High-Speed Line Pairs The LC05-6 is designed to protect four high-speed data lines (two differential pairs) from transient over-volt- ages which result from lightning and ESD. Protection of two line pairs is achieved by connecting the device as follows: Pins 1-4 are connected to line 1 of the first pair (i.e. Tip 1) and pins 13-16 are connected to line 2 of the first pair (i.e. Ring 1). Pins 5-8 are connected to line 1 of the second pair (i.e. Tip 2) and pins 9-12 are connected to line two of the second pair (i.e. Ring 2). All pins should be connected for best results. Minimize parasitic inductance in the protection circuit path by keeping the trace length between the protected line and the LC05-6 as short as possible. T1/E1 Linecard Protection A typical T1/E1 linecard protection circuit is shown in Figure 2. The LC05-6 is connected between Tip & Ring on the transmit and receive line pairs. It provides protection to metallic (line-to-line) lightning and ESD surges. It is designed to meet the intra-building re- quirements of Bellcore GR-1089. This design takes advantage of the isolation of the transformer to suppress common mode surges. To complete the protection circuit, the SRDA05-4 (or SRDA3.3-4 for 3.3V supplies) is employed as the IC side protection element. This device helps prevent the transceiver from latching up by providing fine clamping of tran- sients that are coupled through the transformer. TIP 1 TIP 2 RING 1 RING 2 Applications Information |
Podobny numer części - LC05-6TB |
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Podobny opis - LC05-6TB |
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