Si52254/Si52258 Data Sheet 4/8-Output PCIe Gen1/2/3/4/5 Clock Generator KEY FEATURES The Si52258/54 are the industry s highest performance and lowest power automotive grade PCI Express clock generators for PCIe Gen1/2/3/4/5 common clock and/or SRIS 8/4-outputs with internal termination applications. The Si52258 and Si52254 source eight and four 100 MHz PCIe differential PCIe Gen 1/2/3/4/5 compliant clock outputs, respectively. All clock outputs are compliant to PCIe Gen1/2/3/4/5 com- Automotive grade 2: 40 to +105 C mon clock and separate reference clock architecture specifications. Internal 100 or 85 line matching Hardware control pins are available for enabling and disabling the outputs, as well as Excellent jitter performance 0.05 ps RMS (Gen3/4) spread spectrum enable/disable for EMI reduction. 0.025 ps RMS (Gen5) For more information about PCI Express, Skyworks complete PCIe portfolio, application Triangular spread spectrum for EMI notes, and design tools, including the Skyworks PCIe Clock Jitter Tool for PCI Express reduction, down spread 0.25% or 0.5% compliance, please visit the Skyworks PCI Express Learning Center. Individual hardware control pins for Output Enable, Spread Spectrum Enable Enable and Frequency Select Applications: 25 MHz crystal input or clock input 1.83.3 V power supply Infotainment Radar Sensors Pb-free, RoHS-6 compliant ADAS ECU LiDar Sensors Skyworks Solutions, Inc. Phone 781 376-3000 Fax 781 376-3100 sales skyworksinc.com www.skyworksinc.com 1 Rev. 1.0 Skyworks Proprietary Information Products and Product Information are Subject to Change Without Notice November 18, 2021 1Si52254/Si52258 Data Sheet Features List 1. Features List 8/4-100 MHz HCSL outputs with internal termination PCIe Gen1/2/3/4/5 compliant Automotive grade 2: 40 to +105 C Internal 100 or 85 line matching Excellent jitter performance 0.05 ps RMS (Gen3/4) 0.025 ps RMS (Gen5) Triangular spread spectrum for EMI reduction, down spread 0.25% or 0.5% Individual hardware control pins for Impedance Select, Output Enable, and Spread Spectrum Enable Loss of Signal (LOS) output pin 25 MHz crystal input or clock input 1.83.3 V power supply Pb-free, RoHS-6 compliant Skyworks Solutions, Inc. Phone 781 376-3000 Fax 781 376-3100 sales skyworksinc.com www.skyworksinc.com 2 Rev. 1.0 Skyworks Proprietary Information Products and Product Information are Subject to Change Without Notice November 18, 2021 2