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LTC4304IMS датащи(PDF) 12 Page - Linear Technology |
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LTC4304IMS датащи(HTML) 12 Page - Linear Technology |
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12 / 16 page ![]() LTC4304 12 4304fa Figure 5. Typical Supply Independent Applications CARD_SCL CARD_SDA 3.3V 5V 5V 4304 F05 BACKPLANE CONNECTOR SDA SCL C1 0.01 µF R1 10k R6 10k R11 10k R12 10k R7 10k R10 10k R15 10k R2 10k R3 10k R8 10k 2.5V R13 10k R14 10k R9 10k R4 10k R5 10k ACC SDAIN SCLIN ENABLE VCC GND SDAOUT SCLOUT READY FAULT LTC4304 CARD_SCL CARD_SDA 3.3V 3.3V 3.3V 3.3V 5V 5V BACKPLANE CONNECTOR SDA SCL C2 0.01 µF ACC SDAIN SCLIN ENABLE VCC GND SDAOUT SCLOUT READY FAULT LTC4304 CARD_SCL CARD_SDA BACKPLANE CONNECTOR SDA SCL C3 0.01 µF ACC SDAIN SCLIN ENABLE VCC GND SDAOUT SCLOUT READY FAULT LTC4304 STAGGERED CONNECTOR STAGGERED CONNECTOR STAGGERED CONNECTOR Supply Independent Operation Figure 5 illustrates applications of the LTC4304 with differ- ent bus pull up and VCC voltages, demonstrating its ability to recognize and buffer bus data levels that are above or below its VCC supply voltage. In applications where VCC voltage is greater than bus pull-up voltages, rise-time ac- celerators cannot be used. Float ACC in applications where the pull-up voltage on SDAIN and SCLIN is < VCC and the pull-up voltage on SDAOUT and SCLOUT is ≥ VCC. Connect ACC to ground in applications where VCC is ≤ SDA and SCL pull-up voltages. Connect ACC to VCC for applications where SDA and SCL pull-up voltages are ≤ VCC. APPLICATIONS INFORMATION |
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