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USBUF Datasheet(PDF) 3 Page - STMicroelectronics |
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USBUF Datasheet(HTML) 3 Page - STMicroelectronics |
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3 / 13 page  DocID7041 Rev 8 3/13 USBUF Technical information 13 2 Technical information Figure 2. USB standard requirements Host or Hub port Twisted pair shielded Zo = 90ohms 5m max Hub 0 or Full-speed function Untwisted unshielded 3m max FULL SPEED CONNECTION LOW SPEED CONNECTION 3.3V 3.3V D+ D- D+ D- D+ D- D+ D- 1.5k 1.5k Hub 0 or Low-speed function Low-speed USB Transceiver Full-speed or Low-speed USB Transceiver 15k Rt Rt Ct Ct Host or Hub port Full-speed or Low-speed USB Transceiver 15k Rt Rt Ct Ct Rt Rt Ct Ct Full-speed USB Transceiver Rt Rt Ct Ct 15k 15k |
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