9ZXL0451EKILFT

Overview

The 9ZXL0451EKILFT is a four-output Zero-Delay/Fanout Clock Buffer from the 9ZXL04x1E family, designed for PCIe Gen1–5 and CPU applications. It operates within a supply voltage range of 3.135 V to 3.465 V and supports frequencies up to 400 MHz in Fanout mode. The device features LP-HCSL outputs with integrated series terminations, eliminating external resistors. Key electrical specifications include a maximum propagation delay of 3 ns, cycle-to-cycle jitter under 50 ps, and output-to-output skew less than 50 ps. It functions in an industrial temperature range of -40°C to +85°C.

Feature Summary

• Four Low-power HCSL (LP-HCSL) differential outputs with integrated series termination resistors
• Supports PCIe CLKREQ# function via dedicated active-low OE# pins for each output
• Selectable PLL bandwidths to minimize jitter peaking in cascaded PLL topologies
• Spread-spectrum compatible input tracking for EMI reduction

Applications

• Servers and High-performance Computing
• nVME Storage Systems
• Networking Equipment
• Hardware Accelerators
• Industrial Control Systems

Procurement Notes

Verify the specific suffix EKILFT against the manufacturer's current ordering guide to confirm package type, reel quantity, and environmental compliance status. Ensure the design accommodates the required 32-VFQFPN footprint and thermal dissipation characteristics for the NLG32 package.

Selection Notes

Select this component when a four-channel clock buffer with zero-delay or fanout capabilities is required for PCIe Gen1 through Gen5 architectures. The integrated LP-HCSL outputs simplify board layout by removing the need for discrete series resistors. Verify that the system requires the specific 100MHz ZDB mode supported by the 9ZXL04x1E variant.

Part Context

This part belongs to the second-generation enhanced performance 9ZXL04x1E/06x1E/08x1E/12x1E family of buffers. It serves as a pin-compatible upgrade to previous generations, offering improved phase jitter performance while maintaining compatibility with DB800ZL specifications. The family covers output counts ranging from four to twelve.

Replacement Considerations

The 9ZXL0451A is a prior generation device within the same family. While pin-compatible, it offers different jitter performance metrics compared to the 9ZXL0451E derivative.