9ZXL1251EKILF

Overview

The 9ZXL1251EKILF is a clock buffer integrated circuit manufactured by Renesas Electronics Corporation, belonging to the 9ZXL series. Designed for high-speed digital interfaces, it supports Intel QPI and PCI Express (PCIe) applications. The device features a single circuit with a 1:12 input-to-output ratio, accepting a differential HCSL clock input and providing twelve differential HCSL outputs. It operates within a supply voltage range of 3.135V to 3.465V and supports maximum frequencies up to 400MHz. The component is housed in a 64-VFQFPN package with exposed pads, measuring 9x9 mm, and is rated for an operating temperature range of -40°C to +85°C.

Feature Summary

• 1:12 fan-out ratio with differential HCSL input and output signaling
• Supports Intel QPI and PCIe interface timing requirements
• Operates on a 3.135V to 3.465V power supply with max frequency of 400MHz
• Available in a compact 64-VFQFPN (9x9mm) surface-mount package

Applications

• Intel QuickPath Interconnect (QPI) clock distribution
• PCI Express (PCIe) system clock buffering
• High-performance server and workstation motherboard designs

Procurement Notes

Verify current availability status as the part may be discontinued or subject to long lead times. Confirm the specific suffix 'EKILF' matches the required RoHS compliance and packaging format. Check for Product Change Notifications (PCNs) regarding manufacturing site or material changes before finalizing procurement plans.

Selection Notes

Select this component when a 1:12 differential HCSL fan-out is required for QPI or PCIe buses. Ensure the design accommodates the 64-VFQFPN footprint and thermal dissipation needs. Verify that the system power supply remains within the 3.135V–3.465V range to maintain signal integrity and timing specifications.

Part Context

This part is part of the 9ZXL family of low-power clock buffers from Renesas. It serves as a derivative or variant optimized for specific OEM requirements, often associated with DB1200ZL naming conventions. It complements other members like the 9ZXL1231EKILF, differing primarily in internal configuration or specific qualification standards for enterprise platforms.

Replacement Considerations

Direct pin-compatible substitutes within the same family include the 9ZXL1231EKILF, though functional verification is required due to potential differences in internal PLL or buffer configurations. Cross-referencing the latest datasheet revision is essential to ensure electrical compatibility.