9ZXL1950DKILF

Overview

The 9ZXL1950DKILF is a second-generation, enhanced-performance differential buffer derived from the DB1900ZL architecture. It features 19 LP-HCSL outputs with an integrated 85Ω output impedance, eliminating the need for external termination resistors and reducing board area by approximately 130mm². The device operates as a zero-delay buffer or fanout clock distribution solution, supporting input frequencies from 1 MHz to 400 MHz. Powered by a single 3.3V supply, it consumes typical power of 712 mW. The component is housed in a compact 10mm x 10mm 72-VFQFPN package and supports spread spectrum inputs for EMI reduction.

Feature Summary

• Integrated 85Ω output impedance on all 19 LP-HCSL outputs eliminates 76 external resistors.
• SMBus-controlled enable bits allow software management of individual output states.
• Selectable PLL bandwidth minimizes jitter peaking in cascaded PLL topologies.
• Spread spectrum compatible design tracks spreading input clocks to reduce EMI.

Applications

• PCI Express (Gen 1–5) clock distribution
• Intel QPI/UPI processor interfaces
• Servers and high-performance computing systems

Procurement Notes

Verify the specific ordering suffix against manufacturer documentation to confirm packaging details such as reel quantity and carrier type. Confirm moisture sensitivity level (MSL) ratings prior to surface mount assembly to ensure proper storage and reflow profile compliance. Cross-reference the full part number with official distributors to validate current availability status and lead times.

Selection Notes

Select this component when a pin-compatible upgrade to the 9ZXL1950B is required with improved phase jitter performance. Ensure the application utilizes HCSL inputs and requires LP-HCSL outputs with fixed 85Ω termination. Verify that the system can accommodate the 72-VFQFPN package dimensions and that the 3.3V supply voltage aligns with the specified operating range.

Part Context

This part belongs to the 9ZXL1950 series of differential clock buffers. It serves as a derivative of the legacy DB1900ZL architecture, offering enhanced performance characteristics while maintaining backward compatibility with previous generations. The device is designed specifically for high-speed digital interfaces requiring precise clock distribution and low jitter performance.

Replacement Considerations

The 9ZXL1950B is a pin-compatible predecessor. Verify that the improved phase jitter specifications of the 9ZXL1950D meet the target design requirements before substitution.