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STF202 Folha de dados(PDF) 5 Page - ON Semiconductor |
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STF202 Folha de dados(HTML) 5 Page - ON Semiconductor |
5 / 8 page STF202–22 http://onsemi.com 5 The Figure 10 describes in a simplified way what the USB port components are. As shown in this diagram, there are signals for upstream and downstream ports which must be provided with Line Termination and EMI Filtering to meet the requirements of the USB specification revision 1.1. In addition to the Line termination and EMI Filtering, it is also needed to protect the USB I/O Lines against ESD conditions, so TVS devices must be added for these purposes. Figure 10. XTAL1 XTAL2 DPO DMO VCC GND DP1–DP4 DM1–DM4 OC1–OC4 PWR1–PWR4 REGULATOR POWER SWITCHING GND VBUS D– D+ USB Data Lines and Power to Downstream Ports To Upstream Ports CLK CRISTAL As mentioned before, the ON Semiconductor STF202 device provides “upstream termination”, EMI Filtering and ESD Protection to IEC6100–4–2 in an integrated solution placed in a small and single package (TSOP–6, Case 318G). The typical application for the STF202 device is shown in the Figure 11. Figure 11. D1D+ D1D– OC PWR DOD+ DOD– REGULATOR TVS VBUS D+ D– STF202 654 123 GND OC PWR D2D+ D2D– TVS POWER SWITCH VBUS D+ D– GND DOWNSTREAM TERMINATION VBUS D+ D– GND DOWNSTREAM TERMINATION USB CONTROLLER |
Nº de peça semelhante - STF202 |
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Descrição semelhante - STF202 |
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