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AN1702 Datasheet(PDF) 3 Page - STMicroelectronics

Part # AN1702
Description  ST485EB for e-meter applications
PDF  11 Pages
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Manufacturer  STMICROELECTRONICS [STMicroelectronics]
Direct Link  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

AN1702 Datasheet(HTML) 3 Page - STMicroelectronics

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AN1702
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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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