Description
The 9QXL2000B is a 20-output very-low-additive phase jitter
fanout buffer for PCIe Gen4 and Gen5. It offers integrated
terminations for 85Ω transmission lines.
PCIe Clocking Architectures
▪ Common Clocked (CC)
▪ Independent Reference (IR) with and without spread spectrum
Typical Applications
▪ Servers
▪ Storage
▪ Networking
▪ SSDs

Features
▪ Low-Power HCSL (LP-HCSL) 85Ω outputs eliminate 80
resistors, saving 130mm2 of area
▪ Low-Power HCSL (LP-HCSL) outputs reduce device power
consumption by 50%
▪ 8 OE# pins configurable to control up to 20 outputs
▪ 9 selectable SMBus addresses
▪ Spread spectrum compatible
▪ 10 × 10 mm 72-VFQFPN package
Output Features
▪ 20 Low-Power HCSL (LP-HCSL) 85Ω output pairs
Key Specifications
▪ Output-to-output skew: < 50ps
▪ Additive phase jitter: DB2000Q filter < 40fs rms
▪ Additive Phase jitter: PCIe Gen4 filter < 40fs rms
▪ Additive Phase jitter: PCIe Gen5 filter < 20fs rms
▪ DB2000Q v1.1 pinout