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USBUF01P6 Datasheet(PDF) 1 Page - STMicroelectronics |
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USBUF01P6 Datasheet(HTML) 1 Page - STMicroelectronics |
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1 / 7 page  ® 1/7 USBUF01P6 EMI FILTER AND LINE TERMINATION FOR USB UPSTREAM PORTS REV. 2 SOT-666IP (Internal Pad) May 2004 APPLICATIONS EMI Filter and line termination for USB upstream ports on: ■ USB Hubs ■ PC peripherals FEATURES ■ Monolithic device with recommended line termination for USB upstream ports ■ Integrated Rt series termination and Ct bypassing capacitors. ■ Integrated ESD protection ■ Small package size DESCRIPTION The USB specification requires upstream ports to be terminated with pull-up resistors from the D+ and D- lines to Vbus. On the implementation of USB systems, the radiated and conducted EMI should be kept within the required levels as stated by the FCC regulations. In addition to the requirements of termination and EMC compatibility, the computing devices are required to be tested for ESD susceptibility. The USBUF01P6 provides the recommended line termination while implementing a low pass filter to limit EMI levels and providing ESD protection which exceeds IEC61000-4-2 level 4 standard. The device is packaged in a SOT-666 which is the smallest available lead frame package (45% smaller than the standard SOT323). BENEFITS ■ EMI / RFI noise suppression ■ Required line termination for USB upstream ports ■ ESD protection exceeding IEC61000-4-2 level 4 ■ High flexibility in the design of high density boards ■ Tailored to meet USB 2.0 standard (low speed and high speed data transmission) Order Codes Part Number Marking USBUF01P6 U IPAD™ FUNCTIONAL DIAGRAM 3.3 V Rp Ct Rt Ct Rt D1 Grd D2 D4 D3 3.3 V COMPLIES WITH THE FOLLOWING STANDARDS: ■ IEC61000-4-2 level4: 15kV (air discharge) 8kV (contact discharge) ■ MIL STD 883E-Method 3015-7: Class 3 C = 100 pF R = 1500 Ω 3 positive strikes and 3 negative strikes (F = 1 Hz) |
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