9ZXL0831AKLF

Overview

The Renesas 9ZXL0831AKLF is an eight-output low-power clock buffer designed for Intel DB800ZL specifications. It supports PCIe Gen 1/2/3 and QPI/UPI applications with a frequency range of 33 MHz to 150 MHz. The device features LP-HCSL outputs and HCSL inputs, operating on a single 3.3 V supply within a 48-pin VFQFPN package. Key electrical parameters include cycle-to-cycle jitter under 50 ps, output-to-output skew under 65 ps, and input-to-output delay variation under 50 ps. It operates between 0°C and +70°C.

Feature Summary

• Zero-delay buffer architecture with fixed feedback path ensuring 0ps input-to-output delay drift.
• Eight independent OE# pins providing hardware control for each output.
• Spread spectrum compatible operation that tracks spreading input clocks for EMI reduction.
• Selectable PLL bandwidth to minimize jitter peaking in downstream PLL topologies.

Applications

• PCI Express Gen 1, Gen 2, and Gen 3 systems
• Intel QuickPath Interconnect (QPI) and Ultra Path Interconnect (UPI)
• Server and high-performance computing platforms

Procurement Notes

Verify the specific suffix 'AKLF' against the manufacturer's current datasheet to confirm package dimensions and moisture sensitivity level. Confirm RoHS compliance status as indicated in official documentation. Check for any Product Change Notifications (PCNs) regarding assembly site changes or labeling updates before finalizing procurement orders.

Selection Notes

Select this component when a zero-delay fanout buffer compliant with Intel DB800ZL is required for PCIe or QPI interfaces. Ensure the design utilizes the 48-VFQFPN package footprint. Verify that the application environment temperature remains within the commercial range of 0°C to +70°C. Consider the 9ZXL0831E series if extended industrial temperature ranges or higher frequency support up to 400 MHz are necessary.

Part Context

This part belongs to the 9ZXL0831 family of low-power differential buffers. It serves as a legacy solution for Intel DB800ZL specifications, distinct from the enhanced 9ZXL0831E series which offers improved jitter performance and broader frequency coverage. The device integrates PLL functionality for de-jittering while maintaining low power consumption through push-pull outputs.

Replacement Considerations

The 9ZXL0831EKILF is a pin-compatible upgrade offering improved phase jitter performance. The 9ZXL0832EKILF is another derivative within the same package family. Verify pin compatibility and electrical parameter differences before substituting these enhanced models.