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PSLC03-LF-T13 Datasheet(PDF) 4 Page - Protek Devices |
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PSLC03-LF-T13 Datasheet(HTML) 4 Page - Protek Devices |
4 / 5 page PSLC03 thru PSLC24C 4 05091.R11 2/07 www.protekdevices.com CIRCUIT BOARD LAYOUT RECOMMENDATIONS Circuit board layout is critical for Electromagnetic Compatibility (EMC) protection. The following guidelines are recommended: ✔ 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. The PSLC Series are TVS arrays designed to protect I/O or data lines from the damaging effects of ESD and EFT. This product series provides both unidirectional and bidirectional protection, with a surge capability of 500 Watts P PP per line for an 8/20µs waveform and ESD protection > 40kV. UNIDIRECTIONAL COMMON-MODE CONFIGURATION (Figure 1) The two PSLC Series devices provide protection in a common- mode configuration as depicted in Figure 1. Circuit connectivity is as follows: ✔ TVS Device 1: Line 1(D+) is connected to Pins 2 & 3. ✔ TVS Device 2: Line 2(D-) is connected to Pins 2 & 3. ✔ Both TVS Devices: Pins 1 & 4 connected to ground. BIDIRECTIONAL DIFFERENTIAL-MODE CONFIGURATION (Figure 2) The PSLCxxC Series provides protection in a differential-mode configuration as depicted in Figure 2. Circuit connectivity is as follows: ✔ Line 1(R X) is connected to Pins 1 & 4. ✔ Line 2(T X) is connected to Pins 2 & 3. Figure 1 - Unidirectional Configuration (Two TVS Devices) Common-Mode USB Protection ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;; ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;; ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;; ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;; ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;; ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;; ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;; 1 4 3 2 1 4 2 3 D+ USB IC D- GND SOLDER PAD Figure 2 - Bidirectional Configuration Differential-Mode Ethernet Protection 1 4 3 2 R R T X R X APPLICATIONS |
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