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9DB423BGLF Datasheet(PDF) 8 Page - Integrated Device Technology |
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9DB423BGLF Datasheet(HTML) 8 Page - Integrated Device Technology |
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8 / 19 page  IDT® Four Output Differential Buffer for PCIe Gen 1, Gen 2 and QPI 1437B - 02/04/10 9DB423B Four Output Differential Buffer for PCIe for Gen 1, Gen 2 and QPI 8 Clock Periods Differential Outputs with Spread Spectrum Enabled 1 Clock 1us 0.1s 0.1s 0.1s 1us 1 Clock Lg- -SSC -ppm error 0ppm + ppm error +SSC Lg+ Absolute Period Short-term Average Long-Term Average Period Long-Term Average Short-term Average Period Minimum Absolute Period Minimum Absolute Period Minimum Absolute Period Nominal Maximum Maximum Maximum DIF 100 9.949 9.999 10.024 10.025 10.026 10.051 10.101 ns 1,2,3 DIF 133 7.449 7.499 7.518 7.519 7.520 7.538 7.588 ns 1,2,4 DIF 166 5.949 5.999 6.014 6.015 6.016 6.031 6.081 ns 1,2,5 DIF 200 4.950 5.000 5.012 5.013 5.013 5.026 5.076 ns 1,2,5 DIF 266 3.700 3.750 3.759 3.759 3.760 3.769 3.819 ns 1,2,5 DIF 333 2.950 3.000 3.007 3.008 3.008 3.015 3.065 ns 1,2,5 DIF 400 2.450 2.500 2.506 2.506 2.507 2.513 2.563 ns 1,2,5 Clock Periods Differential Outputs with Spread Spectrum Disabled 1 Clock 1us 0.1s 0.1s 0.1s 1us 1 Clock Lg- -SSC -ppm error 0ppm + ppm error +SSC Lg+ Absolute Period Short-term Average Long-Term Average Period Long-Term Average Short-term Average Period Minimum Absolute Period Minimum Absolute Period Minimum Absolute Period Nominal Maximum Maximum Maximum DIF 100 9.949 9.999 10.000 10.001 10.051 ns 1,2,3 DIF 133 7.449 7.499 7.500 7.501 7.551 ns 1,2,4 DIF 166 5.949 5.999 6.000 6.001 6.051 ns 1,2,5 DIF 200 4.950 5.000 5.000 5.001 5.051 ns 1,2,5 DIF 266 3.700 3.750 3.750 3.750 3.800 ns 1,2,5 DIF 333 2.950 3.000 3.000 3.000 3.050 ns 1,2,5 DIF 400 2.450 2.500 2.500 2.500 2.550 ns 1,2,5 1Guaranteed by design and characterization, not 100% tested in production. 3 Driven by SRC output of main clock, PCIe PLL Mode or Bypass mode 4 Driven by CPU output of main clock, QPI PLL Mode or Bypass mode 5 Driven by CPU output of CK410B+/CK420BQ/CK505 main clock, Bypass mode only Measurement Window Symbol 2 All Long Term Accuracy specifications are guaranteed with the assumption that the input clock complies with CK410B+ accuracy requirements. The 9DB423/823 itself does not contribute to ppm error. Notes Notes Definition Measurement Window Units Symbol Definition Units |
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