Document
12-output DB1200ZL Derivative with Integrated 85Ω Terminations
9ZXL1251
DATASHEET
General Description
The 9ZXL1251 meets the demanding requirements of the Intel DB1200ZL specification, including the critical low-drift requirements of Intel CPUs. It is pin compatible to the 9ZXL1231 and integrates 24 termination resistors, saving 41mm2 board area.
Recommended Application
Buffer for Romley, Grantley and Purley Servers, solid state storage and PCIe
Output Features
• 12 LP-HCSL Output Pairs w/integrated terminations (Zo =
85Ω)
Key Specifications
• Cycle-to-cycle jitter <50ps • Output-to-output skew <50ps • Input-to-output delay variation <50ps • PCIe Gen3 phase jitter <1.0ps RMS • Phase jitter: QPI/UPI >=9.6GB/s <0.2ps rms
Features/Benefits
• 85Ω Low-power push-pull HCSL outputs; eliminate 24
resistors, save 41mm2 of area
• Pin compatible to 9ZX21201 and 9ZXL1231; easy path to
power and area savings
• Space-saving 64-pin VFQFPN package • Fixed feedback path for.