The 844021-01 is an Ethernet Clock Generator and a member of the family of high performance devices from IDT. The 844021-01 uses an 18pF parallel resonant crystal over the range of 24.5MHz – 34MHz. For Ethernet applications, a 25MHz crystal is used. The 844021-01 has excellent <1ps phase jitter performance, over the 1.875MHz – 20MHz integration range. The 844021-01 is packaged in a small 8-pin TSSOP, making it ideal for use in systems with limited board space.

特性

  • One Differential LVDS output
  • Crystal oscillator interface, 18pF parallel resonant crystal (24.5MHz – 34MHz)
  • Output frequency range: 122.5MHz – 170MHz
  • VCO range: 490MHz – 680MHz
  • RMS phase jitter @ 125MHz, using a 25MHz crystal (1.875MHz – 20MHz): 0.32ps (typical) @ 3.3V
  • 3.3V or 2.5V operating supply
  • 0°C to 70°C ambient operating temperature
  • Available in lead-free (RoHS 6) package

产品选择

器件号 Part Status Pkg. Type Lead Count (#) Temp. Grade Pb (Lead) Free Carrier Type Buy Sample
Obsolete TSSOP 8 C 是的 Tube
Availability
Obsolete TSSOP 8 C 是的 Reel
Availability

文档

文档标题 language 类型 文档格式 文件大小 日期
数据手册与勘误表
844021-01 Datasheet 数据手册 PDF 343 KB
应用指南 & 白皮书
AN-828 Termination - LVPECL 应用文档 PDF 322 KB
AN-831 The Crystal Load curve 应用文档 PDF 395 KB
AN-844 Termination - AC Coupling Clock Receivers 应用文档 PDF 170 KB
AN-846 Termination - LVDS 应用文档 PDF 133 KB
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-832 Timing Budget and Accuracy 应用文档 PDF 131 KB
AN-834 Hot-Swap Recommendations 应用文档 PDF 153 KB
AN-837 Overdriving the Crystal Interface 应用文档 PDF 133 KB
AN-830 Quartz Crystal Drive Level 应用文档 PDF 143 KB
AN-815 Understanding Jitter Units 应用文档 PDF 565 KB
AN-827 Application Relevance of Clock Jitter 应用文档 PDF 1.15 MB
AN-802 Crystal-Measuring Oscillator Negative Resistance 应用文档 PDF 136 KB
AN-801 Crystal-High Drive Level 应用文档 PDF 202 KB
AN-805 Recommended Ferrite Beads 应用文档 PDF 121 KB
AN-806 Power Supply Noise Rejection 应用文档 PDF 438 KB
AN-803 Crystal Timing Budget and Accuracy for Renesas Timing Clock Products 应用文档 PDF 108 KB
PCN / PDN
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# : TB1303-02 Change of Tape & Reel Packing Method for Selective Products 产品变更通告 PDF 361 KB
PDN# : CQ-19-01(R1) Quarterly Market Declined PDN 产品停产通告 PDF 1014 KB
PDN# : CQ-19-01 Quarterly Market Declined PDN 产品停产通告 PDF 537 KB
其他
IDT Clock Generation Overview 日本語 概览 PDF 1.83 MB

下载

文档标题 language 类型 文档格式 文件大小 日期
模型
844021-01 IBIS Model 模型 - IBIS ZIP 63 KB