NOTICE - The following device(s) are recommended alternatives:
9ZXL1950D - 19-Output DB1900ZL PCIe Zero-Delay/Fanout Clock Buffer
Pin-to-pin with improved performance
Pin-to-pin with improved performance
The 9ZXL1950 is a DB1900Z derivative buffer utilizing Low-Power HCSL (LP-HCSL) outputs to increase edge rates on long traces, reduce board space, and reduce power consumption more than 50% from the original 9ZX21901.It is pin-compatible to the 9ZXL1930 and fully integrates the output terminations. It is pin-compatible to the 9ZXL1930 and fully integrates the output terminations. It is suitable for PCI-Express Gen1/2/3 or QPI/UPI applications, and uses a fixed external feedback to maintain low drift for demanding QPI/UPI applications.
Features
- 19 - LP-HCSL Differential Output Pairs w/integrated terminations (Zo = 85Ω)
- LP-HCSL outputs; up to 90% IO power reduction, better signal integrity over long traces
- Direct connect to 85Ω transmission lines; eliminates 76 termination resistors, saves 130mm² area
- Pin compatible to the 9ZXL1930; easy upgrade to reduced board space
- 72-VFQFPN package; smallest 19 output Z-buffer
- Fixed feedback path; ~0ps input-to-output delay
- 9 Selectable SMBus addresses; multiple devices can share same SMBus segment
- Separate VDDIO for outputs; allows maximum power savings
- PLL or bypass mode; PLL can dejitter incoming clock
- 100MHz & 133.33MHz PLL mode; legacy QPI support
- Selectable PLL BW; minimizes jitter peaking in downstream PLL's
- Spread spectrum compatible; tracks spreading input clock for EMI reduction
- SMBus Interface; unused outputs can be disabled