瑞萨电子 (Renesas Electronics Corporation)
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840NT4-01I

过时

Ethernet and USB Clock Generator for Freescale B4/ T4-based Systems

840NT4-01 Datasheet

概览

The 840NT4-01I is clock generator designed to provide ethernet and USB clocks for Freescale B4/ T4-based systems. The 840NT4-01I utilizes Renesas' FemtoClock NG® PLL technology to synthesize eight low phase-jitter Ethernet reference clocks. The clock generator also provides a 24MHz USB reference clock and a 25MHz reference output.

840NT4-01 - Block Diagram
840NT4-01 - Block Diagram
  • Ten LVCMOS clock outputs:
    • Five LVCMOS 125MHz Ethernet outputs
    • Three LVCMOS 25MHz /125MHz Ethernet outputs
    • One LVCMOS 24MHz USB output
    • One LVCMOS 25MHz REF output
  • QREF output; can be used to drive X1 of other devices, saving a crystal
  • Selectable crystal input, or differential LVPECL input; test mode
  • RMS Phase Jitter, 125MHz, integration range 12kHz – 20MHz: 0.75ps (typical)
  • Cycle-to-Cycle jitter: 75ps (typical)
  • Flexible voltage supply modes; supports legacy and future system requirements, minimizes power consumption
  • Core voltage: (VDD, VDD_XTAL, VDDA) / 
    Output voltage: (VDDO_A, VDDO_B, VDDO_C, VDDO_REF)
    Core / Output
    3.3V / 3.3V
    3.3V / 2.5V
    3.3V / 1.8V
    2.5V / 2.5V
    2.5V / 1.8V
  • -40°C to +85°C ambient operating temperature
  • Space-saving Pb-free, 48-pin 7 × 7 mm QFN; minimal board space
  • Lead-free (RoHS 6) packaging

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类型 文档标题 日期
模型 - IBIS
840NT4-01i IBIS Model
ZIP 110 KB
1 item

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