9ZML1252EKILFT

Overview

The Renesas 9ZML1252EKILFT is a second-generation clock buffer featuring two differential inputs and twelve low-power HCSL-compatible outputs. Designed for Intel Purley and newer platforms, it serves as a backward-compatible replacement for the 9ZML1232B while exceeding DB1200ZL performance specifications. The device supports input frequencies up to 400 MHz with a supply voltage range of 3.135 V to 3.465 V. It operates within an industrial temperature range of -40°C to +85°C and utilizes a 72-lead VFQFPN package.

Feature Summary

• Dual differential HCSL inputs with 12 LP-HCSL outputs
• Supports PCI Express Gen 1-4 and QPI/UPI applications
• Configurable low-drift I2O settings for topology tuning
• Backward compatible with 9ZML1232B

Applications

• Intel Purley platform clock distribution
• PCI Express Gen 1 through Gen 4 systems
• QuickPath Interconnect (QPI) and Ultra Path Interconnect (UPI)

Procurement Notes

Verify component authenticity through authorized Renesas distributors or direct manufacturer channels. Confirm RoHS compliance status via official datasheets prior to integration. Ensure handling procedures account for moisture sensitivity classification during storage and reflow soldering processes.

Selection Notes

Select this component when upgrading from legacy 9ZML1232B designs requiring higher performance margins. Evaluate power consumption benefits derived from LP-HCSL outputs versus standard HCSL variants. Verify that the 72-pin VFQFPN footprint aligns with existing PCB layout constraints and thermal management requirements.

Part Context

This part belongs to the 9ZML1252E series, representing Renesas's second-generation mux derivatives. It is engineered specifically for high-speed server and data center architectures demanding robust clock integrity and lower power dissipation compared to previous generation buffers.

Replacement Considerations

The 9ZML1252EKILFT is explicitly documented as backward compatible with the 9ZML1232B. Designers replacing older buffers should verify pinout compatibility and ensure that the improved performance specifications do not necessitate changes to termination resistor values.