The 840S05I is a four output, Crystal or single ended-to-LVCMOS/LVTTL Frequency Synthesizer and a member of family of high performance clock solutions from IDT. The 840S05I uses a 25MHz parallel resonant crystal to generate 33.33MHz – 166.67MHz clock signals, replacing solutions requiring multiple oscillator and fan-out buffer solution. The device supports output slew rate control with two slew select pins (SLEW[1:0]). The VCO operates at a frequency of 2GHz. The device has 2 output banks, Bank A with two 33.33MHz – 166.67MHz LVCMOS/LVTTL outputs and Bank B with two 33.33MHz – 166.67MHz LVCMOS/LVTTL outputs.

The two banks have their own dedicated frequency select pins and can be independently set for the frequencies mentioned above. The low phase noise characteristic of the 840S05I makes it an ideal clock source for Gigabit Ethernet application. Designed for networking and industrial applications, the 840S05I can also drive the high-speed clock inputs of communication processors, DSPs, switches and bridges.

特性

  • Four single-ended LVCMOS/LVTTL clock outputs
  • One REF_OUT LVCMOS/LVTTL clock output
  • Selectable crystal oscillator interface, 25MHz, 18pF parallel
    resonant crystal or LVCMOS/LVTTL single-ended reference input
  • Supports the following output frequencies on either bank:
    33.33MHz, 50MHz, 66.67MHz, 83.33MHz, 100MHz, 125MHz,
    133.33MHz, and 166.67MHz
  • VCO: 2GHz
  • Slew rate control
  • Output supply modes:
    Core/Output
    3.3V/3.3V
    3.3V/2.5V
  • -40°C to 85°C ambient operating temperature
  • Lead-free (RoHS 6) packaging​

产品选择

下单器件 ID Part Status Pkg. Type Lead Count (#) Temp. Grade Pb (Lead) Free Carrier Type Buy Sample
Not Recommended for New Designs PTQFP 32 I 是的 Tray
Availability

文档和下载

文档标题 其他语言 类型 文档格式 文件大小 日期
数据手册与勘误表
840S05I Data Sheet 数据手册 PDF 441 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-845 Termination - LVCMOS 应用文档 PDF 146 KB
AN-844 Termination - AC Coupling Clock Receivers 应用文档 PDF 170 KB
AN-842 Thermal Considerations in Package Design and Selection 应用文档 PDF 495 KB
AN-803 Crystal Timing Budget and Accuracy for IDT Timing Clock Products 应用文档 PDF 128 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-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-832 Timing Budget and Accuracy 应用文档 PDF 131 KB
AN-830 Quartz Crystal Drive Level 应用文档 PDF 143 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-801 Crystal-High Drive Level 应用文档 PDF 202 KB
AN-806 Power Supply Noise Rejection 应用文档 PDF 438 KB
AN-805 Recommended Ferrite Beads 应用文档 PDF 121 KB
PCN / PDN
PCN# : A2003-01 Add Greatek Taiwan as an Alternate Assembly Location on Select Packages 产品变更通告 PDF 113 KB
PCN# : A1709-02 Add alternate assembly at OSET and Convert to Copper Wire 产品变更通告 PDF 35 KB
PCN# : A1402-02 Alternate Assembly Locations 产品变更通告 PDF 34 KB
其他
Timing Solutions Products Overview 概览 PDF 4.11 MB
IDT Products for Radio Applications 日本語 产品简述 PDF 2.34 MB
IDT Clock Generation Overview 日本語 概览 PDF 1.83 MB
IDT Clock Distribution Overview 日本語 概览 PDF 3.79 MB