9ZML1253EKILF

Overview

The Renesas Electronics 9ZML1253EKILF is a clock buffer belonging to the 9ZML1253 series, designed for low phase noise applications. It features a differential input and provides twelve HCSL outputs. The device operates within a supply voltage range of 3.135 V to 3.465 V and supports maximum input frequencies up to 400 MHz. Key electrical specifications include a maximum propagation delay of 3.6 ns and a duty cycle of up to 55%. The component draws a typical operating current of 22 mA and functions reliably across an extended temperature range from -40°C to +85°C.

Feature Summary

• Provides 12 HCSL outputs derived from a single differential input
• Supports maximum input frequencies up to 400 MHz
• Operates on a 3.3V nominal supply (3.135V–3.465V)
• Low phase noise performance suitable for precision timing

Applications

• PCI Express clock distribution
• Intel QuickPath Interconnect (QPI) systems
• Server and storage infrastructure timing

Procurement Notes

Verify the specific suffix EKILF against official Renesas documentation to confirm package type and tape-and-reel configuration. Confirm RoHS compliance status directly with the manufacturer or authorized distributors, as regulatory details may vary by production batch. Ensure the ordering quantity aligns with the standard factory packaging requirements specified in the product datasheet.

Selection Notes

Select this component when a high-fanout clock buffer with HCSL signaling is required for PCIe or QPI architectures. The 1:12 ratio makes it suitable for distributing a single reference clock to multiple downstream receivers. Verify that the system power supply remains within the 3.135 V to 3.465 V window to ensure proper operation and signal integrity.

Part Context

This part belongs to the 9ZML1253 family of clock buffers manufactured by Renesas Electronics. It is distinct from the 9ZML1252E and 9ZXL series variants, which may differ in output count, package style, or specific feature sets like mux derivation capabilities. The EKILF suffix typically denotes a specific tray packaging option for this VFQFPN-72 variant.

Replacement Considerations

Direct replacements within the same family include the 9ZML1252EKILFT, though users must verify if the functional differences in the 'E' suffix or reel packaging affect the design. Cross-series substitution with 9ZXL models requires careful evaluation of pin compatibility and electrical parameter alignment.