9ZX21901D Description
The 9ZX21901D is a second generation DB1900Z differential buffer for Intel Purley and newer platforms. The part is backwards patible to the 9ZX21901C while offering much improved phase jitter performance. A fixed external feedback maintains low drift for critical QPI/UPI applications.
9ZX21901D Key Features
- 19 HCSL output pairs
- Cycle-to-cycle jitter: < 50ps
- Output-to-output skew: < 50ps
- Input-to-output delay: Fixed at 0 ps
- Input-to-output delay variation: < 50ps
- Phase jitter: PCIe Gen4 < 0.5ps rms
- Phase jitter: UPI 9.6GB/s < 0.1ps rms
- Fixed feedback path; 0ps input-to-output delay