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LT1785IS8-PBF Datasheet(PDF) 8 Page - Linear Technology |
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LT1785IS8-PBF Datasheet(HTML) 8 Page - Linear Technology |
8 / 16 page LT1785/LT1785A/ LT1791/LT1791A 8 178591fb TEST CIRCUITS Figure 1. Driver DC Test Load Figure 2. Receiver Timing Test Load Figure 3. Driver/Receiver Timing Test Circuit Figure 4. Driver Timing Test Load VOD A B R R VOC 1785/91 F01 RECEIVER OUTPUT CRL 1k S1 S2 TEST POINT VCC 1k 1785/91 F02 5V DE A B DI RDIFF CL1 CL2 RO 15pF A B RE 1785/91 F03 OUTPUT UNDER TEST CL S1 S2 VCC 500Ω 1785/91 F04 LT1785 Transmitting INPUTS OUTPUTS RE DE DI A B RO 01 0 0 1 0 01 1 1 0 1 1 0 X Hi-Z Hi-Z Hi-Z 1 1 0 0 1 Hi-Z 1 1 1 1 0 Hi-Z LT1785 Receiving INPUTS OUTPUT RE DE DI A-B RO 0 0 X ≤ –200mV 0 0 0 X ≥ 200mV* 1 0 0 X Open 1 1 0 X X Hi-Z * ≥ 0mV for LT1785A LT1791 INPUTS OUTPUTS RE DE DI A-B Y Z RO 0 0 X ≤ –200mV Hi-Z Hi-Z 0 0 0 X ≥ 200mV* Hi-Z Hi-Z 1 0 0 X Open Hi-Z Hi-Z 1 0 1 0 ≤ –200mV 0 1 0 0 1 0 ≥ 200mV* 0 1 1 0 1 0 Open 0 1 1 0 1 1 ≤ –200mV 1 0 0 0 1 1 ≥ 200mV* 1 0 1 0 1 1 Open 1 0 1 1 0 X X Hi-Z Hi-Z Hi-Z 1 1 0 X 0 1 Hi-Z 1 1 1 X 1 0 Hi-Z * ≥ 0mV for LT1791A FUNCTION TABLES |
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