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

The MPC9443 is a full static design supporting clock frequencies up to 350 MHz. The signals are generated and retimed on-chip to ensure minimal skew between the four output banks. Two independent LVPECL compatible clock inputs are available. This feature supports redundant differential clock sources. In addition, the MPC9443 supports single-ended LVCMOS clock distribution systems. Each of the four output banks can be individually supplied by 2.5 V or 3.3 V, supporting mixed voltage applications. The FSELx pins choose between division of the input reference frequency by one or two. The frequency divider can be set individually for each output bank. The MPC9443 output banks are in high-impedance state by deasserting the OEN pins. Asserting OEN will the enable output banks. Please see Table 4. Output High-Impedance Control (OEN) for details. The outputs can be synchronously stopped (logic low state). The outputs provide LVCMOS compatible levels with the capability to drive terminated 50 ? transmission lines. For series terminated transmission lines, each of the MPC9443 outputs can drive one or two traces giving the devices an effective fanout of 1:32 at VCC = 3.3 V. The device is packaged in a 7x7 mm2 48-lead LQFP package.


  • Configurable 16 outputs LVCMOS clock distribution buffer
  • Compatible to single, dual and mixed 3.3 V / 2.5 V voltage supply
  • Output clock frequency up to 350 MHz
  • Designed for high-performance telecom, networking and computer applications
  • Supports applications requiring clock redundancy
  • Maximum output skew of 250 ps (125 ps within one bank)
  • Selectable output configurations per output bank
  • Individually per-bank high-impedance tristate
  • Output disable (stop in logic low state) control
  • 48-lead LQFP package
  • 48-lead Pb-free Package Available
  • Ambient operating temperature range of –40 to 85°C

Product Options

注文可能な製品ID Part Status Pkg. Type Lead Count (#) Temp. Grade Pb (Lead) Free Carrier Type パッケージ 購入/サンプル
MPC9443AE Obsolete TQFP 48 C Yes Tray Package Info
MPC9443AER2 Obsolete TQFP 48 C Yes Reel Package Info

Documentation & Downloads

タイトル 他の言語 Type 形式 サイズ 日付
MPC9443 Datasheet Datasheet PDF 361 KB
AN-828 Termination - LVPECL Application Note PDF 322 KB
AN-845 Termination - LVCMOS Application Note PDF 146 KB
AN-844 Termination - AC Coupling Clock Receivers Application Note PDF 170 KB
AN-842 Thermal Considerations in Package Design and Selection Application Note PDF 495 KB
AN-840 Jitter Specifications for Timing Signals Application Note PDF 442 KB
AN-834 Hot-Swap Recommendations Application Note PDF 153 KB
AN-835 Differential Input with VCMR being VIH Referenced Application Note PDF 160 KB
AN-833 Differential Input Self Oscillation Prevention Application Note PDF 180 KB
AN-836 Differential Input to Accept Single-ended Levels Application Note PDF 120 KB
AN-815 Understanding Jitter Units Application Note PDF 565 KB
AN-827 Application Relevance of Clock Jitter Application Note PDF 1.15 MB
AN-805 Recommended Ferrite Beads Application Note PDF 121 KB
PCN# : A1602-01(R1) Add Greatek Taiwan as Alternate Assembly Product Change Notice PDF 611 KB
PCN# : A1602-01 Add Greatek Taiwan as Alternate Assembly Product Change Notice PDF 611 KB
PDN# : N-12-22R2 PRODUCT DISCONTINUANCE NOTICE Product Discontinuation Notice PDF 363 KB
PDN# : N-12-22R1 PRODUCT DISCONTINUANCE NOTICE Product Discontinuation Notice PDF 209 KB
MPC9443 IBIS Model Model - IBIS ZIP 22 KB
Timing Solutions Products Overview Overview PDF 4.11 MB
IDT Clock Generation Overview (日本語) English Overview PDF 1.83 MB
IDT Clock Distribution Overview (日本語) English Overview PDF 3.79 MB