The 557-03 is a spread spectrum clock generator that supports PCI-Express Gen 1 and Ethernet requirements. The device is used for PC or embedded systems to substantially reduce electromagnetic interference (EMI). The device provides two differential (HCSL) spread spectrum outputs. The spread type and amount are configured via select pin. Using IDT's patented Phase-Locked Loop (PLL) techniques, the device takes a 25 MHz crystal input and produces two pairs of differential outputs at 25 MHz, 100 MHz, 125 MHz or 200 MHz clock frequencies for HCSL, and 25 MHz or 100 MHz for LVDS.


  • Packaged in 16-pin TSSOP
  • RoHS 5 (green) or RoHS 6 (green and lead free) compliant packaging
  • Supports HCSL or LVDS output levels
  • Operating voltage of 3.3 V
  • Input frequency of 25 MHz
  • Jitter 60 ps (cycle-to-cycle)
  • Spread Spectrum capability
  • Industrial and commercial temperature ranges
  • For PCIe Gen2 applications, see the 5V41065
  • For PCIe Gen3 applications, see the 5V41235


下单器件 ID Part Status Type Lead Count (#) Temp. Grade Pb (Lead) Free Carrier Type Buy Sample
Active 16 C 是的 Tube
Active 16 C 是的 Reel
Active 16 I 是的 Tube
Active 16 I 是的 Reel


文档标题 其他语言 类型 文档格式 文件大小 日期
557-03 Datasheet 数据手册 PDF 210 KB
应用指南 &白皮书
AN-828 Termination - LVPECL 应用文档 PDF 322 KB
AN-844 Termination - AC Coupling Clock Receivers 应用文档 PDF 170 KB
AN-843 PCI Express Reference Clock Requirements 应用文档 PDF 1.90 MB
AN-842 Thermal Considerations in Package Design and Selection 应用文档 PDF 495 KB
AN-840 Jitter Specifications for Timing Signals 应用文档 PDF 442 KB
AN-838 Peak-to-Peak Jitter Calculations 应用文档 PDF 115 KB
AN-839 RMS Phase Jitter 应用文档 PDF 233 KB
AN-836 Differential Input to Accept Single-ended Levels 应用文档 PDF 120 KB
AN-835 Differential Input with VCMR being VIH Referenced 应用文档 PDF 160 KB
AN-827 Application Relevance of Clock Jitter 应用文档 PDF 1.15 MB
AN-815 Understanding Jitter Units 应用文档 PDF 565 KB
AN-802 Crystal-Measuring Oscillator Negative Resistance 应用文档 PDF 136 KB
AN-808 PCI Express/HCSL Termination 应用文档 PDF 137 KB
AN-805 Recommended Ferrite Beads 应用文档 PDF 121 KB
PCN# : A1602-01(R1) Add Greatek Taiwan as Alternate Assembly 产品变更通告 PDF 611 KB
PCN# : A1602-01 Add Greatek Taiwan as Alternate Assembly 产品变更通告 PDF 611 KB
PCN# : A1511-01(R1) Add SPEL India as Alternate Assembly Location 产品变更通告 PDF 596 KB
PCN# : A1511-01 Add SPEL India as Alternate Assembly Location 产品变更通告 PDF 544 KB
PCN# : TB1403-01 Changed in Carrier Tape, Plastic Reel and Quantity per Reel on TSSOP-14, TSSOP-16 产品变更通告 PDF 663 KB
PCN# : A1309-01 Changed of Traceability Mark Format 产品变更通告 PDF 439 KB
PCN# : TB1303-02 Change of Tape & Reel Packing Method for Selective Products 产品变更通告 PDF 361 KB
557-03 IBIS Model 模型 - IBIS ZIP 4 KB
Clock Distribution Overview 日本語 概览 PDF 217 KB
PCI Express Timing Solutions Overview 概览 PDF 275 KB
Timing Solutions Products Overview 概览 PDF 4.11 MB
IDT Clock Generation Overview 日本語 概览 PDF 1.83 MB