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AN1702 数据表(PDF) 3 Page - STMicroelectronics |
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AN1702 数据表(HTML) 3 Page - STMicroelectronics |
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3 / 11 page ![]() AN1702 List of figures 3/11 List of figures Figure 1. RS-485 half-duplex network . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 Figure 2. RS-485 full-duplex network. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 Figure 3. Dangerous ground shifts in a common situation. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6 Figure 4. RS-485 terminal node with optocouplers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 Figure 5. External fail-safe and line DC termination . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8 Figure 6. IEC 61000-4-5 transient voltage test V and I waveforms . . . . . . . . . . . . . . . . . . . . . . . . . . . 9 Figure 7. Usage of the transient voltage suppressors in the RS-485 network . . . . . . . . . . . . . . . . . . . 9 |
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