CMOS Clock Buffers

The Silicon Labs CMOS Clock Buffers are low-jitter non-PLL based fanout buffers offering industry-leading flexibility while delivering best-in-class performance.  The family features CMOS output buffers with minimal cross-talk and superior supply noise rejection, simplifying low jitter clock distribution in noisy environments. 

Boasting additive jitter as low as 150-fs RMS, the devices utilize advanced CMOS technology to fanout as many as 12 clocks from DC - 220 MHz, with guaranteed low additive jitter, low skew, and low propagation delay variability.  

Features

  • Upto 12 single-ended CMOS, SSTL, HSTL outputs
  • Provides signal level translation
  • Loss of Signal (LOS) indicator allows system clock monitoring
  • Output Enable (OEB) pin allows glitchless control of output clocks
  • Wide operating frequency DC - 250 Mhz
  • Glitchless clock switching
  • Synchronous and Individual output enable control options available
  • Integrated voltage level translation
  • 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

Status
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
SL2305 (EOL)
1 5 0 220 LVCMOS 2.5; 3.3 SOIC8; TSSOP8 No No Yes No Yes
SL23EP04NZ (EOL)
1 4 10 220 LVCMOS 2.5; 3.3 SOIC8; TSSOP8 No No Yes No No
SL23EP09 (EOL)
1 9 10 220 LVCMOS 2.5; 3.3 SOIC16; TSSOP16 No No Yes No Yes
Si5338-EVB 1 8 5 200 LVCMOS 0.15 1.8; 2.5; 3.3 1.8; 2.5; 3.3 QFN24 4x4 No No Yes No No
Si5338-EVB 1 8 5 200 LVCMOS 0.15 1.8; 2.5; 3.3 1.8; 2.5; 3.3 QFN24 4x4 No No Yes No No
Si53301-4-EVB 2 8 1 200 LVCMOS 0.1 1.8; 2.5; 3.3 1.8; 2.5; 3.3 TSSOP16 4.4 x 5 No No Yes No No
Si53301-4-EVB 2 8 DC 200 LVCMOS 0.1 1.8; 2.5; 3.3 1.8; 2.5; 3.3 QFN16 3x3 No No Yes No Yes
Si53301-4-EVB 2 12 DC 200 LVCMOS 0.1 1.8; 2.5; 3.3 1.8; 2.5; 3.3 QFN24 4x4 No No Yes No No
Si53301-4-EVB 1 8 1 200 LVCMOS 0.1 1.8; 2.5; 3.3 1.8; 2.5; 3.3 TSSOP16 4.4 x 5 No No Yes No No
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