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PACUSB-U2 Datasheet(PDF) 5 Page - ON Semiconductor |
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PACUSB-U2 Datasheet(HTML) 5 Page - ON Semiconductor |
5 / 9 page PACUSB-U1/U2/U3 Rev. 2 | Page 5 of 9 | www.onsemi.com Application Information The PACUSB-U1/U2/U3 is targeted for upstream USB ports (peripherals). It provides series termination, EMI filtering, and ESD protection for the two USB data lines D+ and D-. The USB Specification revision 1.1 provides for two data rates: • The Full Speed signaling bit rate at 12 Mbits per second, and • The Low Speed signaling bit rate at 1.5 Mbits per second. The speed is selected by connecting one of the data lines (D+ or D-) to a 3.3V supply voltage via a 1.5k Ω pull- up resistor (R2). Connections for Full Speed Operation Full Speed devices have the pull-up resistor (R2) connected to the D+ data line, as shown in Full Speed Connection. Pin1 is tied to the D+ line of the USB controller. Pin 6 is connected to the D+ line on the USB connector. Connections for Low Speed Operation Low Speed devices have the pull-up resistor (R2) connected to the D- data line, as shown in Low Speed Connection. Pin 1 is tied to the D- line of the USB controller; pin 6 is connected to the D- line on the USB connector. Figure 1. Full Speed Connection |
Similar Part No. - PACUSB-U2 |
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Similar Description - PACUSB-U2 |
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