LVPECL Clock Buffers

The Silicon Labs LVPECL clock buffers are low-jitter non-PLL based fanout buffers offering industry-leading flexibility while delivering best-in-class performance.  With additive jitter as low as 50-fs RMS, the family features LVPECL output buffers with minimal cross-talk and superior supply noise rejection, simplifying low jitter clock distribution in noisy environments. 

Built on our CMOS technology, our buffers provide fanout 10 clocks up to 1250 MHz, with guaranteed low additive jitter, low skew, and low propagation delay variability.  

 



Features

  • Upto 10 differential LVPECL outputs
  • Wide operating frequency DC - 1.25 GHz
  • Accepts any differential or single-ended input
  • Provides signal level translation
  • Output Enable (OEB) pin allows glitchless control of output clocks
  • Loss of Signal (LOS) indicator allows system clock monitoring
  • Output driver supply voltage independent of core supply: 1.5, 1.8, 2.5, or 3.3 V
  • Additive jitter: 150 fs RMS typ
  • Industrial temperature range: -40 to +85 °C

Product Matrix

Devices
Part Number Data Sheet Dev KIt Clock Inputs Clock Outputs Frequency Min Frequency Max (MHz) Output Format(s) Additive Jitter (RMS) (ps) VDD (V) VDDO (V) Package Type Package Size (mm) Universal Buffers Differential Buffers LVCMOS Buffers PCI Express Buffers Zero Delay Buffers
Si5338-EVB 1 4 5 710 LVPECL 0.15 2.5; 3.3 2.5; 3.3 QFN24 4x4 No Yes Yes Yes No
Si5338-EVB 1 4 5 350 LVPECL 0.15 1.8; 2.5; 3.3 1.8; 2.5; 3.3 QFN24 4x4 No Yes Yes Yes No
Si53301-4-EVB 2 5 DC 725 LVPECL 0.05 2.5; 3.3 1.8; 2.5; 3.3 TSSOP20 Yes Yes No Yes No
Si53301-4-EVB 2 10 DC 1250 CML; HCSL; LVCMOS; LVDS; LVPECL 0.05 1.8; 2.5; 3.3 1.8; 2.5; 3.3 QFN32 5x5 Yes Yes No Yes No
Si53301-4-EVB 1 2 DC 1250 LVPECL 0.05 1.8; 2.5; 3.3 1.8; 2.5; 3.3 QFN16 3x3 Yes Yes No Yes No
Si53301-4-EVB 2 4 DC 1250 LVPECL 0.05 1.8; 2.5; 3.3 1.8; 2.5; 3.3 QFN16 3x3 Yes Yes No Yes No
Si53301-4-EVB 2 10 DC 1250 LVPECL 0.05 2.5; 3.3 2.5; 3.3 QFN32 5x5 Yes Yes No Yes No
Si53301-4-EVB 2 10 DC 200 LVPECL 0.05 1.8; 2.5; 3.3 2.5; 3.3 QFN32 5x5 No No No No No
Si53301-4-EVB 2 6 DC 1250 LVPECL 0.05 1.8; 2.5; 3.3 1.8; 2.5; 3.3 QFN24 4x4 No No No No No
Si53301-4-EVB 2 6 DC 200 LVPECL 0.05 1.8; 2.5; 3.3 1.8; 2.5; 3.3 QFN24 4x4 No No No No No

Evaluate LVPECL Buffers

Kickstart Si533xx development with the Si53301/4-EVB development kit.

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