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USB5532B 数据表(PDF) 29 Page - Microchip Technology |
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USB5532B 数据表(HTML) 29 Page - Microchip Technology |
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29 / 40 page ![]() 2-Port SS/HS USB Hub Controller Datasheet SMSC USB5532B 29 Revision 1.2 (05-31-13) DATASHEET 6.2 Operating Conditions Figure 6.1 Supply Rise Time Model PARAMETER SYMBOL MIN MAX UNITS COMMENTS USB5532B Operating Temperature TA 070 °C Die Temperature TJ 115 °C 1.25 V supply voltage VDD12 1.22 1.31 V 3.3 V supply voltage VDD33 3.0 3.6 V 1.25 V supply rise time tRT 0400 μs(Figure 6.1) 3.3 V supply rise time tRT 0400 μs(Figure 6.1) Voltage on USB+ and USB- pins -0.3 5.5 V If any 3.3 V supply voltage drops below 3.0 V, then the MAX becomes: (3.3 V supply voltage) + 0.5 ≤ 5.5 Voltage on any signal powered by VDD33 rail -0.3 VDD33 V t10% 10% 90% Voltage tRTxx t90% Time 100% 3.3 V VSS VDD33 90% 100% 1.25 V VDD12 |
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