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поискавой системы для электроныых деталей |
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поискавой системы для электроныых деталей |
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ICS841484I датащи(PDF) 14 Page - Renesas Technology Corp |
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ICS841484I датащи(HTML) 14 Page - Renesas Technology Corp |
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14 / 28 page  ICS841484I Data Sheet FEMTOCLOCK® CRYSTAL-TO-0.7V DIFFERENTIAL HCSL CLOCK GENERATOR ICS841484DKI REVISION A NOVEMBER 7, 2012 14 ©2012 Integrated Device Technology, Inc. Applications Information Recommendations for Unused Input and Output Pins Inputs: LVCMOS Control Pins All control pins have internal pull-ups; additional resistance is not required but can be added for additional protection. A 1k resistor can be used. REF_IN For applications not requiring the use of the reference clock, it can be left floating. Though not required, but for additional protection, a 1k resistor can be tied from the REF_IN to ground. Crystal Input For applications not requiring the use of the crystal oscillator input, both XTAL_IN and XTAL_OUT can be left floating. Though not required, but for additional protection, a 1k resistor can be tied from XTAL_IN to ground. Outputs: LVCMOS Output The unused LVCMOS output can be left floating. There should be no trace attached. Differential Outputs All unused differential outputs can be left floating. We recommend that there is no trace attached. Both sides of the differential output pair should either be left floating or terminated. |
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