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ISO1430DWR датащи(PDF) 21 Page - Texas Instruments |
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ISO1430DWR датащи(HTML) 21 Page - Texas Instruments |
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21 / 49 page ![]() 8 Parameter Measurement Information B or Z D = 0 or V CC1 DE = V CC1 V CC2 GND2 V OD V TEST + ± 375 375 R L A or Y Figure 8-1. Driver Voltages 0 V or VCC1 VOC VOD GND2 A or Y D B or Z RL (1) / 2 RL (1) / 2 VOC(PP) VOC A B ûVOC(SS) VA VB A. RL = 100 Ω for RS422, RL = 54 Ω for RS-485 Figure 8-2. Driver Voltages 0 V 10% VOD (L) VOD (H) tf tr 10% VOD 0 V 90% tPLH tPHL VI 90% B or Z Input Generator VI D GND1 CL (1) 50 pF ± 20% RL 54 ± 1% 50 A or Y VOD DE = VCC1 VCC1 50% A. CL includes fixture and instrumentation capacitance. Figure 8-3. Driver Switching Specifications GND1 DE VCC1 GND1 + VOH or VOL ± RE R GND1 Y Z + VOH or VOL ± + VCM ± D VCC2 VCC1 A B 1.5 V or 0 V 0 V or 1.5 V GND2 54 54 10 µF CL 15 pF (1) 1 k 0.1 µF 0.1 µF 10 µF A. Includes probe and fixture capacitance. Figure 8-4. Common Mode Transient Immunity (CMTI)—Full Duplex www.ti.com ISO1450, ISO1452, ISO1410, ISO1412, ISO1430, ISO1432 SLLSF22H – APRIL 2018 – REVISED JUNE 2024 Copyright © 2024 Texas Instruments Incorporated Submit Document Feedback 21 Product Folder Links: ISO1450 ISO1452 ISO1410 ISO1412 ISO1430 ISO1432 |
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