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.
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
Comparison
Applications
Documentation
Design & Development
Models
ECAD Models
Schematic symbols, PCB footprints, and 3D CAD models from SamacSys can be found by clicking on products in the Product Options table. If a symbol or model isn't available, it can be requested directly from the website.