Si53159 PCI-EXPRESS GEN 1, GEN 2, GEN 3, AND GEN 4 NINE-OUTPUT FANOUT BUFFER Features PCI-Express Gen 1, Gen 2, Up to nine buffered clocks Gen 3, and Gen 4 common clock 100 to 210 MHz clock input range compliant 2 I C support with readback Supports Serial-ATA (SATA) at capabilities 100 MHz Supports spread spectrum input Low power push-pull differential Extended temperature: output buffers 40 to 85 C No termination resistors required 3.3 V power supply Output enable pins for all 48-pin QFN package buffered clocks Ordering Information: See page 18. Applications Network attached storage Wireless access point Pin Assignments Multi-function printers Servers Description 48 47 46 45 44 43 42 41 40 39 38 37 The Si53159 is a high-performance, low additive jitter, PCIe clock buffer DIFF8 VDD DIFF 1 36 35 DIFF8 VDD DIFF 2 that can fan out nine PCIe clocks. The clock outputs are compliant to 1 OE DIFF0 3 34 VDD DIFF 1 33 DIFF7 PCIe Gen 1, Gen 2, Gen 3, and Gen 4 specifications. The device has six OE DIFF1 4 32 DIFF7 VDD DIFF 5 hardware output enable control pins for enabling and disabling differential 31 DIFF6 VSS DIFF 6 49 GND 30 DIFF6 VSS DIFF 7 outputs. The small footprint and low power consumption makes the 1 29 VSS DIFF OE DIFF2 8 Si53159 the ideal clock solution for consumer and embedded applica- 1 28 DIFF5 OE DIFF3 9 27 1 DIFF5 OE DIFF 4:5 10 tions. Measuring PCIe clock jitter is quick and easy with the Skyworks 26 DIFF4 1 11 OE DIFF 6:8 Solutions PCIe Clock Jitter Tool. Download it for free at Si53159 2 Skyworks Solutions, Inc. Phone 781 376-3000 Fax 781 376-3100 sales skyworksinc.com www.skyworksinc.com Rev. 1.3 Skyworks Proprietary Information Products and Product Information are Subject to Change Without Notice September 3, 2021