Clock Buffers

Clock Buffers

SiTime offers a range of high-performance clock buffers that support a wide range of frequencies, five standard input types, and up to 10 single-ended or 10 differential outputs. With low additive jitter and low output-to-output skew, these buffers are ideal for jitter-sensitive applications. Their low power consumption makes them ideal for battery-driven and high-density applications. 

5x5 mm, 32-pin QFN Clock Buffer package

High-Performance Buffers

Fanout clock buffers for low jitter, high frequency clock/data distribution.  

  • Output frequency up to 2.1 GHz 
  • Ultra-low output-to-output skew, as low as 30 ps (typical)    
  • Low additive jitter, 50 to 55 fs rms 
  • Low propagation delay, as low as <1.6 ns    
  • Wide voltage operation for design compatibility     
  • Output enable (OE) signal for output synchronization (SiT92112, SiT92114, SiT92216) 
  • Level translation 
Device Datasheet Buy Now Number of Inputs Number of Outputs Max. Output Frequency Max. Output Skew Additive Phase Jitter(rms) Package(mm)
SiT92110 Buy Now 1 10 Single Ended 250 MHz 30 ps 50 fs 5x5 mm, 32-pin QFN
SiT92112 Buy Now 1 2 Single Ended 200 MHz 50 ps 50 fs 2x2 mm, 8-pin DFN
SiT92113 Buy Now 1 5 Single Ended 250 MHz 30 ps 50 fs 4x4 mm, 24-pin QFN
SiT92114 Buy Now 1 4 Single Ended 200 MHz 50 ps 50 fs 2x2 mm, 8-pin DFN
SiT92211 Buy Now 1 10 Differential 2.1 GHz 30 ps 55 fs 7x7 mm, 48-pin QFN
SiT92216 Buy Now 1 4 Differential 1 Single Ended 2.1 GHz 30 ps 50 fs 5x5 mm, 32-pin QFN
6x6 mm, 80-pin LGA Clock Buffer package

PCIe Buffers

Fanout buffers that meet or exceed all the performance requirements of the Intel DB2000QL specification designed for PCI-Express Gen 1-6 or QP/UPI applications.  

  • Ultra-low output-to-output skew, <50 ps (typical)    
  • Ultra-low additive jitter, 8 fs rms 
  • Low propagation delay  
  • Output enable (OE) signal for output synchronization  
  • Level translation  
Device Datasheet Buy Now Number of Inputs Number of Outputs Max. Output Frequency Max. Output Skew Additive Phase Jitter(rms) Package(mm)
SiT92310 Contact Sales 1 20 Differential 400 MHz 50 ps 8 fs (PCIe Gen6 @100 MHz) 10x10 mm, 72-pin QFN
SiT92313 Contact Sales 1 8 Differential 400 MHz 50 ps 8 fs (PCIe Gen6 @100 MHz) 6x6 mm, 48-pin LGA
SiT92314 Contact Sales 1 4 Differential 400 MHz 50 ps 8 fs (PCIe Gen6 @100 MHz) 5x5 mm, 32-pin VQFN
SiT92315 Contact Sales 1 20 Differential 400 MHz 50 ps 8 fs (PCIe Gen6 @100 MHz) 6x6 mm, 80-pin LGA
SiT92316 Contact Sales 1 6 Differential 400 MHz 50 ps 8 fs (PCIe Gen6 @100 MHz) 5x5 mm, 40-pin VQFN
SiT92317 Contact Sales 1 6 Differential 400 MHz 50 ps 8 fs (PCIe Gen6 @100 MHz) 5x5 mm, 40-pin VQFN
SiT92318 Contact Sales 1 8 Differential 400 MHz 50 ps 8 fs (PCIe Gen6 @100 MHz) 6x6 mm, 48-pin VQFN
2x2 mm, 8-pin DFN Clock Buffer package

Automotive Buffers

Automotive grade 1, AEC-Q100-qualified, high-performance fanout clock buffers. 

  • Automotive Grade -40°C to 125°C operation 
  • Ultra-low output-to-output skew, <50 ps (typical)    
  • Low additive jitter, 50 fs rms 
  • Low propagation delay  
  • Wide voltage operation for design compatibility     
  • Output enable (OE) signal for output synchronization  
  • Level translation 
Device Datasheet Buy Now Number of Inputs Number of Outputs Max. Output Frequency Max. Output Skew Additive Phase Jitter(rms) Package(mm)
SiT92184 Contact Sales 1 4 Single Ended 200 MHz 50 ps 50 fs 2x2 mm, 8-pin DFN