PCI Express Clock Fanout Buffer Si53208-A01

The Si53208-A01 is a PCI Express Gen 1/2/3/4/5/6 1 : 8 fanout buffer is optimized for distributing 1 reference clock for Intel® UltraPath and QuickPath Interconnect (Intel UPI/QPI), PCIe Gen 1/2/3/4/5/6 , SAS, SATA and Intel Scalable Memory Interconnect (Intel SMI) applications. Each differential output can be enabled through individual hardware pins for maximum flexibility and power savings.


Temperature Range Min (°C)-40
Package TypeQFN48
Line Impedance Match100
Universal Buffersfalse
Number of Inputs1
Number of Outputs8
Frequency Max200
Frequency Min (MHz)10
Package Size (mm)6x6
DescriptionPCI-Express Fan-out Buffer
Ouput Format(s)HCSL
VDDO (V)1.5; 1.8
Additive Jitter (ps RMS)0.06
VDD (V)1.5; 1.8
PCIe Complianttrue
Feedback Pathfalse
Output Format CategoriesDifferential
PCIe Performance1; 2; 3; 4; 5; 6
Single Ended Inputfalse
LVCMOS Buffersfalse
Differential Buffersfalse
Temperature Range Max (°C)85
Zero Delay Buffersfalse

Product Documents

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Look up product's green / pb-free status and information on RoHS, REACH, Halogen Free, and PFIS.

Certificate of Performance

Evaluation Kits

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Si53208 8-Output PCIe Gen 1/2/3/4 Fanout Buffer Evaluation Kit

This Si53208-EVB is designed to evaluate the jitter performance, power consumption and signal integrity of Si53208 device for PCIe Gen1/2/3/4 and SRIS. The evaluation board features jumpers and SMA connector for easy static configuration of the control inputs as well we providing a port for external equipment access.

MSRP $175.00

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ClockBuilder Pro Field Programmer

When used with ClockBuilder Pro software, the ClockBuilder Pro Field Programmer makes it simple for systems designers to develop, program, and debug any Si5332/8, Si5350/1/6/7, Si534x/6x/8x/9x, Si540x, and Si55xx part families clock device “in-system,” or in one of the convenient QFN sockets. The field programmer supports I2C or SPI interfaces to the host system, and SPI to the field programmer's QFN socket boards.

MSRP $149.00