853S111BKILFT

Overview

The 853S111BKILFT is a low skew, high-performance 1-to-10 differential-to-LVPECL/ECL fanout buffer manufactured by Renesas Electronics. It operates from either a 2.5V or 3.3V power supply and supports LVPECL input/output modes. The device features guaranteed output and part-to-part skew characteristics, making it suitable for clock distribution applications requiring well-defined performance and repeatability. It is housed in a 32-pin VFQFN package with dimensions of 5.0 x 5.0 mm.

Feature Summary

• 1-to-10 differential fanout buffer configuration
• Low additive phase jitter (0.03ps typical RMS)
• Maximum propagation delay of 645ps
• Operates on 2.5V or 3.3V single supply

Applications

• High-speed clock distribution networks
• Server and storage system timing
• Telecommunications equipment
• Test and measurement instrumentation

Procurement Notes

Verify the specific suffix BKILFT to confirm the 32-pin VFQFN package variant. Confirm RoHS compliance status as lead-free packages are available. Check current production status against potential obsolescence notices for the 853S111BI series before finalizing procurement plans.

Selection Notes

Select this component when a 1:10 fanout ratio is required with strict skew control. Ensure the design supports LVPECL or ECL signaling standards. Verify that the PCB layout accommodates the 32-pin VFQFN footprint and thermal requirements for the selected operating voltage range.

Part Context

This part belongs to the 853S111BI family of clock buffers. It serves as a specialized solution for distributing reference clocks to multiple synchronous components in high-speed digital systems where signal integrity and timing precision are critical constraints.

Replacement Considerations

Direct replacements within the same family include the 853S111BYILF (PTQFP package) and 853S111BKILF (VFQFN package). Cross-vendor substitutes require careful evaluation of pin compatibility and electrical parameter alignment.