9ZXL0851EKILFT

Overview

The Renesas 9ZXL0851EKILFT is a clock generator IC designed for Intel QPI and PCIe applications. It features a single circuit with one input and eight outputs, operating at a maximum frequency of 400 MHz. The device utilizes HCSL output signaling and supports differential input/output configurations. Powered by a 3.135 V to 3.465 V supply, it functions within a -40°C to +85°C temperature range. Packaged in a 48-VFQFPN (6x6 mm) surface-mount format with an exposed pad, this component integrates PLL functionality for precise clock distribution in high-speed digital systems.

Feature Summary

• Supports Intel QPI and PCIe Gen1-5 clock generation
• Single circuit configuration with 1:8 input-to-output ratio
• Maximum operating frequency of 400 MHz
• HCSL output type with differential input/output capability

Applications

• Intel QuickPath Interconnect (QPI) clock distribution
• PCI Express (PCIe) Gen1 through Gen5 system clocks
• High-performance server and workstation motherboards

Procurement Notes

Verify the specific suffix EKILFT against the manufacturer's current datasheet to confirm package dimensions and pinout compatibility. Check for Product Change Notifications (PCNs) regarding assembly site or material changes. Confirm moisture sensitivity level (MSL 3) handling requirements during storage and soldering processes to ensure component reliability.

Selection Notes

Select this component when an 8-output HCSL clock buffer is required for Intel QPI or PCIe interfaces. Ensure the design accommodates the 48-VFQFPN footprint and 3.135V–3.465V power supply constraints. Compare against the 9ZXL0451E (4-output) or 9ZXL0651E variants if fewer outputs are sufficient for the target application architecture.

Part Context

This part belongs to the 9ZXL0851 family of processor clock generators from Renesas. It serves as a derivative for the DB800ZL platform, specifically optimized for low-power and high-speed data transfer protocols. The device complements other members like the 9ZXL0451EKILFT and 9ZXL0852EKILF within the same thermal and electrical specification envelope.

Replacement Considerations

Direct substitutes include the 9ZXL0851EKKLFT for LP-HCSL output variations. Verify functional equivalence with the 9ZXL0852EKILF, noting potential differences in output drive strength or packaging style. Always cross-reference pinouts and electrical parameters before substitution.