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LC03-6R2G Arkusz danych(PDF) 3 Page - ON Semiconductor |
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LC03-6R2G Arkusz danych(HTML) 3 Page - ON Semiconductor |
3 / 5 page LC03-6R2 http://onsemi.com 3 APPLICATIONS INFORMATION The LC03- 6 ON Semiconductor's device is a TVS Diode array designed to protect sensitive electronics such as communications systems, computers, and computer peripherals against damage due to transient overvoltage conditions caused by lightning, electrostatic discharge (ESD), and electrical fast transients (EFT). Because of its relative low capacitance (<25 pf), it can be used in high speed I/O data lines such as USB 1.1 ports. The integrated design of the LC03-6 device offers high surge rating, low capacitance steering diodes, and a TVS diode integrated in a single package (SO-8). In addition, this device offers compliance to Bellcore 1089 requirements (intra-building). LC03-6 Device's Configurations Options Protection of Two High-speed I/O Data Lines The LC03-6 device is able to protect two high speed data lines against transient overvoltage conditions by driving them to a fixed reference point for clamping purposes. Depending in the application's requirements, the LC03-6 device can be configured for protection in either differential mode (Line-to-Line) or common mode (Line-to-ground). The Figure 5 shows the connection for Differential mode (Line-to-Line) and Common mode (Line-to-Ground) protection. The inputs and outputs of the I/O data lines are connected at terminals 1 to 8, and 4 to 5 while the terminals 2, 3, 6 and 7 are connected to ground; for better performance, it is recommended to minimize parasitic inductances by using ground planes and minimizing the PCB trace lengths for the ground return connections. Figure 5. Configuration for Differential and Common Mode Protection LC03-6 Line 1 Out Line 2 Out Line 1 In Line 2 In If differential protection is required by some particular applications, then the configuration for differential protection is made as shown in the Figure 6: Figure 6. Configuration for Differential Protection (Line-to-Line) LC03-6 Line 1 Out Line 2 Out Line 1 In Line 2 In N/C N/C N/C N/C T1/E1 Linecard Protection (Intra-Building) The Figure 7 shows a typical schematic for a T1/E1 line card protection circuit. The LC03- 6 device is connected between Tip and Ring on the transmit and receive line pairs. it provides protection to metallic and common mode lightning surges per Bellcore 1089 intra- building (For further information, see Bellcore 1089 standard). A metallic voltage is defined as a difference of potential between the T and R terminals of a telecommunications pair. Currents caused by lightning, in the absence of protector operation and with balanced terminal equipment and telecommunications loop, cause Tip and Ring conductors to attain the same potential hence do not produce metallic transients. Common mode surges are suppressed by the isolation of the transformer. |
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Podobny opis - LC03-6R2G |
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