9ZXL0851EKKLFT

Overview

The Renesas 9ZXL0851EKKLFT is a clock buffer integrated circuit designed for Intel QPI and PCI Express (PCIe) applications. It features one circuit with an HCSL input and eight LP-HCSL outputs, providing a 1:8 input-to-output ratio. The device supports differential signaling on both input and output paths and operates at a maximum frequency of 400 MHz. Powered by a supply voltage ranging from 3.135 V to 3.465 V, it functions within a temperature range of -40°C to +85°C. The component is housed in a 48-VFQFPN package with exposed pads, measuring 6x6 mm.

Feature Summary

• Supports Intel QPI and PCIe interface timing requirements
• Converts single-ended HCSL input to eight low-power HCSL (LP-HCSL) outputs
• Operates with differential input and output signaling capabilities
• Integrated Phase-Locked Loop (PLL) for clock generation

Applications

• Intel QuickPath Interconnect (QPI) systems
• PCI Express (PCIe) infrastructure equipment
• Server and high-performance computing platforms

Procurement Notes

Verify the specific suffix 'EKKLFT' against official Renesas documentation to confirm packaging details and environmental compliance status. Ensure that ordering quantities align with the manufacturer's standard reel size of 2,500 units. Confirm moisture sensitivity level (MSL 3) handling requirements during storage and assembly processes.

Selection Notes

Select this component when designing systems requiring distribution of a 400 MHz clock signal to multiple PCIe or QPI endpoints. The LP-HCSL output type is suitable for low-power digital interfaces. Verify that the 48-VFQFPN footprint matches the target PCB layout constraints and thermal dissipation requirements for the operating environment.

Part Context

This part belongs to the 9ZXL08x1E family of clock buffers, which includes variants such as the 9ZXL04x1E, 9ZXL06x1E, and 9ZXL12x1E. These devices share similar architectural features but differ in output counts and specific application optimizations. The 9ZXL0851 variant specifically targets eight-output distribution needs for processor interconnects.

Replacement Considerations

The 9ZXL0852EKILF is a related variant within the same product family, offering similar electrical characteristics and pinout compatibility. Verify functional equivalence regarding output drive strength and power consumption before substitution.