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

The MPC9774 utilizes PLL technology to frequency lock its outputs onto an input reference clock. Normal operation of the MPC9774 requires the connection of the PLL feedback output QFB to feedback input FB_IN to close the PLL feedback path. The reference clock frequency and the divider for the feedback path determine the VCO frequency. Both must be selected to match the VCO frequency range. The MPC9774 features frequency programmability between the three output banks outputs as well as the output to input relationships. Output frequency ratios of 1:1, 2:1, 3:1, 3:2 and 3:2:1 can be realized. Additionally, the device supports a separate configurable feedback output which allows for a wide variety of of input/output frequency multiplication alternatives. The VCO_SEL pin provides an extended PLL input reference frequency range. The REF_SEL pin selects the internal crystal oscillator or the LVCMOS compatible inputs as the reference clock signal. Two alternative LVCMOS compatible clock inputs are provided for clock redundancy support. The PLL_EN control selects the PLL bypass configuration for test and diagnosis. In this configuration, the selected input reference clock is routed directly to the output dividers bypassing the PLL. The PLL bypass is fully static and the minimum clock frequency specification and all other PLL characteristics do not apply. The MPC9774 has an internal power–on reset. The MPC9774 is fully 3.3V compatible and requires no external loop filter components. All inputs (except XTAL) accept LVCMOS signals while the outputs provide LVCMOS compatible levels with the capability to drive terminated 50 ? transmission lines. For series terminated transmission lines, each of the MPC9774 outputs can drive one or two traces giving the devices an effective fanout of 1:12. The device is pin and function compatible to the MPC974 and is packaged in a 52-lead LQFP package.

特長

  • 1:14 PLL based low-voltage clock generator
  • 3.3V power supply
  • Internal power–on reset
  • Generates clock signals up to 125 MHz
  • Maximum output skew of 175 ps
  • Two LVCMOS PLL reference clock inputs
  • External PLL feedback supports zero-delay capability
  • Various feedback and output dividers (see application section)
  • Supports up to three individual generated output clock frequencies
  • Drives up to 28 clock lines
  • Ambient temperature range 0°C to +70°C
  • Pin and function compatible to the MPC974

製品選択

発注型名 Part Status Pkg. Type Lead Count (#) Temp. Grade Pb (Lead) Free Carrier Type 購入/サンプル
Obsolete TQFP 52 C はい Tray
Availability
Obsolete TQFP 52 C はい Reel
Availability

ドキュメント&ダウンロード

タイトル 他の言語 分類 形式 サイズ 日付
データシート
MPC9774 Datasheet データシート PDF 366 KB
アプリケーションノート、ホワイトペーパー
AN-828 Termination - LVPECL アプリケーションノート PDF 322 KB
AN-831 The Crystal Load curve アプリケーションノート PDF 395 KB
AN-845 Termination - LVCMOS アプリケーションノート PDF 146 KB
AN-844 Termination - AC Coupling Clock Receivers アプリケーションノート PDF 170 KB
AN-842 Thermal Considerations in Package Design and Selection アプリケーションノート PDF 495 KB
AN-803 Crystal Timing Budget and Accuracy for IDT Timing Clock Products アプリケーションノート PDF 128 KB
AN-840 Jitter Specifications for Timing Signals アプリケーションノート PDF 442 KB
AN-838 Peak-to-Peak Jitter Calculations アプリケーションノート PDF 115 KB
AN-839 RMS Phase Jitter アプリケーションノート PDF 233 KB
AN-832 Timing Budget and Accuracy アプリケーションノート PDF 131 KB
AN-834 Hot-Swap Recommendations アプリケーションノート PDF 153 KB
AN-830 Quartz Crystal Drive Level アプリケーションノート PDF 143 KB
AN-827 Application Relevance of Clock Jitter アプリケーションノート PDF 1.15 MB
AN-815 Understanding Jitter Units アプリケーションノート PDF 565 KB
AN-802 Crystal-Measuring Oscillator Negative Resistance アプリケーションノート PDF 136 KB
AN-801 Crystal-High Drive Level アプリケーションノート PDF 202 KB
AN-806 Power Supply Noise Rejection アプリケーションノート PDF 438 KB
AN-805 Recommended Ferrite Beads アプリケーションノート PDF 121 KB
PCN / PDN
PDN#: N-16-02 PRODUCT DISCONTINUANCE NOTICE ON SELECT DEVICES 製品中止通知 PDF 161 KB
PCN# : TB1504-01R1 Qty per Reel Standardization for Selective Packages 製品変更通知 PDF 95 KB
PCN# : TB1504-01 Qty per Reel Standardization for Selective Packages 製品変更通知 PDF 50 KB
PCN# : A1401-02 Alternate Copper Wire Assembly Site 製品変更通知 PDF 36 KB
PDN# : N-12-48 PRODUCT DISCONTINUANCE NOTICE 製品中止通知 PDF 93 KB
Downloads
MPC9774 IBIS Model モデル-IBIS ZIP 16 KB
その他資料
Timing Solutions Products Overview 概要 PDF 4.11 MB
IDT Products for Radio Applications (Japanese) English 製品概要 PDF 6.27 MB
IDT Clock Generation Overview (Japanese) English 概要 PDF 2.19 MB
IDT Clock Distribution Overview (Japanese) English 概要 PDF 7.79 MB