NOTICE - The following device(s) are recommended alternatives:

The 87952I-147 is a low voltage, low skew LVCMOS/LVTTL Clock Generator and a member of the family of High Performance Clock Solutions from IDT. With output frequencies up to 180MHz, the 87952I-147 is targeted for high performance clock applications. Along with a fully integrated PLL, the 87952I-147 contains frequency configurable outputs and an external feedback input for regenerating clocks with "zero delay". For test and system debug purposes, the nPLL_EN input allows the PLL to be bypassed. When HIGH, the MR/nOE input resets the internal dividers and forces the outputs to the high impedance state. The low impedance LVCMOS/LVTTL outputs of the 87952I- 147 are designed to drive terminated transmission lines. The effective fanout of each output can be doubled by utilizing the ability of each output to drive two series terminated transmission lines.

特性

  • Fully integrated PLL
  • Eleven LVCMOS / LVTTL outputs, 7? typical output impedance
  • LVCMOS / LVTTL REF_CLK input
  • Output frequency range up to 180MHz at VDD = 3.3V ± 5%
  • VCO range: 240MHz - 480MHz
  • External feedback for "zero delay" clock regeneration
  • Cycle-to-cycle jitter: 100ps (maximum)
  • 3.3V supply voltage
  • -40°C to 85°C ambient operating temperature
  • Available in lead-free (RoHS 6) packages

产品选择

器件号 Part Status Pkg. Type Lead Count (#) Temp. Grade Pb (Lead) Free Carrier Type Buy Sample
Obsolete TQFP 32 I 是的 Tray
Availability
Obsolete TQFP 32 I 是的 Reel
Availability

文档和下载

文档标题 language 类型 文档格式 文件大小 日期
应用指南 &白皮书
AN-828 Termination - LVPECL 应用文档 PDF 322 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-840 Jitter Specifications for Timing Signals 应用文档 PDF 442 KB
AN-834 Hot-Swap Recommendations 应用文档 PDF 153 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-805 Recommended Ferrite Beads 应用文档 PDF 121 KB
PCN / PDN
PDN# : CQ-15-01 (R1) Quarter PDN for Declined Market 产品停产通告 PDF 550 KB
PDN# : CQ-15-01 Quarter PDN for Declined Market 产品停产通告 PDF 547 KB
PCN# : A1401-02 Alternate Copper Wire Assembly Site 产品变更通告 PDF 36 KB
PCN# : TB1303-01 Change of Carrier Tape for TQFP-32, TQFP-48 产品变更通告 PDF 472 KB
下载
87952I-147 IBIS Model 模型 - IBIS IBS 183 KB
其他
Clock Distribution Overview 日本語 概览 PDF 217 KB
IDT Clock Generation Overview 日本語 概览 PDF 1.83 MB