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USB2503 データシート(PDF) 40 Page - SMSC Corporation |
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USB2503 データシート(HTML) 40 Page - SMSC Corporation |
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40 / 46 page ![]() USB 2.0 High-Speed 4-Port Hub Controller Datasheet Revision 1.92 (05-08-07) 40 SMSC USB2514 DATASHEET Chapter 5 DC Parameters 5.1 Maximum Guaranteed Ratings Note: Stresses above the specified parameters could cause permanent damage to the device. This is a stress rating only and functional operation of the device at any condition above those indicated in the operation sections of this specification is not implied. When powering this device from laboratory or system power supplies, it is important that the Absolute Maximum Ratings not be exceeded or device failure can result. Some power supplies exhibit voltage spikes on their outputs when the AC power is switched on or off. In addition, voltage transients on the AC power line may appear on the DC output. When this possibility exists, it is suggested that a clamp circuit be used. 5.2 Recommended Operating Conditions PARAMETER SYMBOL MIN MAX UNITS COMMENTS Storage Temperature TA -55 150 °C Lead Temperature 325 °C Soldering < 10 seconds 1.8V supply voltage VDDA18PLL, VDD18 2.5 V 3.3V supply voltage VDDA33, VDD33PLL, VDD33, VDD33CR 4.6 V Voltage on any I/O pin -0.5 5.5 V Voltage on XTAL1 -0.5 4.0 V Voltage on XTAL2 -0.5 3.6 V PARAMETER SYMBOL MIN MAX UNITS COMMENTS Operating Temperature TA 070 °C 1.8V supply voltage VDDA18PLL VDD18 1.62 1.98 V 3.3V supply voltage VDDA33 VDDA33PLL VDD33 VDD33CR 3.0 3.6 V Voltage on any I/O pin -0.3 5.5 V If any 3.3V supply voltage drops be lo w 3.0 V, th en th e MAX becomes: (3.3V supply voltage) + 0.5 |
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