8S89876BKILFT

Clock Buffers, Drivers Overview

The 8S89876BKILFT is a high-speed differential-to-LVDS buffer and divider with internal termination, manufactured by Renesas Electronics Corporation. It operates on a single 3.3V supply and supports input frequencies up to 2.5GHz. The device features two LVDS output pairs (Q0/nQ0 and Q1/nQ1) and selectable frequency division ratios of ÷1, ÷2, ÷4, ÷8, or ÷16 via external select pins. It accepts LVPECL, LVDS, or CML differential inputs through built-in 50Ω termination resistors. Key electrical specifications include a maximum propagation delay of 1.1ns, an output skew of 25ps, and a typical additive phase jitter of 0.07ps RMS. The component is housed in a compact 16-lead VFQFN package measuring 3mm x 3mm.

Clock Buffers, Drivers Feature Summary

• Integrated 50Ω input termination for LVPECL, LVDS, and CML signals
• Configurable frequency division: ÷1, ÷2, 〉4, ÷8, or ÷16
• Two differential LVDS output pairs with 100Ω termination requirement for unused outputs
• Low jitter performance with 0.07ps typical RMS additive phase jitter

Clock Buffers, Drivers Applications

• High-speed clock distribution networks
• Differential signal buffering and level translation
• Frequency division in data communication systems

Clock Buffers, Drivers Procurement Notes

Verify the component status as the datasheet originates from Integrated Device Technology (IDT), which was acquired by Renesas Electronics. Confirm that the specific ordering suffix BKILFT corresponds to the tape and reel packaging variant intended for surface mount assembly. Ensure compatibility with RoHS 6 lead-free standards as specified in the ordering information table.

Clock Buffers, Drivers Selection Notes

Select this component when a low-skew, high-frequency buffer with programmable division is required for space-constrained designs. The 3mm x 3mm VFQFN package is suitable for dense PCB layouts. Ensure the design accommodates thermal vias under the exposed pad for adequate heat dissipation, given the junction-to-ambient thermal resistance of 74.7°C/W at zero airflow. Verify that the load requirements match the LVDS output voltage swing characteristics.

Clock Buffers, Drivers Part Context

This part belongs to the 8S898xx series of high-speed clock buffers and dividers. It serves as a successor or alternative to the obsolete 889876AK device, maintaining pin compatibility while offering updated manufacturing processes. The device is part of Renesas' portfolio following the acquisition of IDT, continuing support for legacy high-speed timing applications.

Clock Buffers, Drivers Replacement Considerations

The datasheet explicitly states that the 8S89876BKILFT is pin-compatible with the obsolete device 889876AK. Designers replacing older components should verify that the 889876AK was previously configured correctly regarding the divide-by settings, as the default mode for the 8S89876I is ÷16.