9ZXL1251EKILFT

Application Specific Clock/Timing Overview

The 9ZXL1251EKILFT is a clock distribution IC from the Renesas 9ZXL series, designed for Intel QPI and PCI Express (PCIe) applications. It features a single circuit with a 1:12 input-to-output ratio and includes an internal PLL. The device supports a maximum frequency of 400MHz and operates on a supply voltage range of 3.135V to 3.465V. It provides differential HCSL outputs and accepts differential clock inputs. The component is housed in a 64-VFQFPN package with dimensions of 9x9 mm and is rated for operation between -40°C and 85°C.

Application Specific Clock/Timing Feature Summary

• 1:12 fan-out ratio with integrated PLL for zero-delay buffering
• Supports frequencies up to 400MHz for PCIe and QPI systems
• Differential HCSL output drivers with low power consumption
• Available in a compact 64-VFQFPN (9x9mm) surface-mount package

Application Specific Clock/Timing Applications

• Intel QuickPath Interconnect (QPI) clock distribution
• PCI Express (PCIe) system clock generation and buffering
• High-speed processor clock networks

Application Specific Clock/Timing Procurement Notes

This component is listed as discontinued by DigiKey. Verification of current availability through alternative distributors or authorized channels is required before procurement planning. Supply chain stability should be assessed due to end-of-life status.

Application Specific Clock/Timing Selection Notes

Select this part for designs requiring a 1:12 fan-out buffer with HCSL outputs for PCIe or QPI interfaces. Ensure the design accommodates the 3.135V-3.465V supply range and the 64-pin VFQFPN footprint. Consider replacement options if long-term supply is needed.

Application Specific Clock/Timing Part Context

The 9ZXL1251EKILFT belongs to the 9ZXL family of high-performance clock buffers. It is a derivative of the DB1200ZL architecture, optimized for specific Intel platform requirements. The 'E' suffix typically denotes enhanced specifications or packaging variations within the Renesas portfolio.

Application Specific Clock/Timing Replacement Considerations

The 9ZXL1231EKILFT is identified as a similar replacement option. Verify pin compatibility and electrical parameters against the original design requirements before substitution.