9DB803DFILFT

Overview

The 9DB803DFILFT is a clock buffer manufactured by Renesas Electronics, designed for PCI Express Gen2 applications. It provides eight differential HCSL outputs derived from a single differential HCSL input. The device supports zero delay buffer mode and fanout mode, with operation frequencies ranging from 33.33 MHz to 400 MHz in bypass mode. It operates within a supply voltage range of 3.135 V to 3.465 V and features cycle-cycle jitter below 50 ps. The component is housed in a 48-pin SSOP package and complies with RoHS standards.

Feature Summary

• Eight differential HCSL output pairs supporting PCIe Gen2 clock distribution
• Zero delay buffer and fanout mode capabilities with bandwidth programming
• Spread spectrum modulation tolerance for down spread and center spread configurations
• Low phase jitter performance: < 3.0/3.1 ps rms for PCIe Gen2

Applications

• PCI Express Gen2 clock distribution systems
• Server and storage backplane timing solutions
• High-speed digital interface synchronization

Procurement Notes

Verify the suffix 'FT' indicates tape-and-reel packaging distinct from the tube-packaged 'LF' variant. Confirm moisture sensitivity level (MSL) and reflow soldering profiles align with assembly requirements. Ensure the specific revision matches design specifications as manufacturing notices may update pinout or material composition over time.

Selection Notes

Select this component when eight synchronized differential clocks are required for PCIe Gen2 interfaces. Compare against the 9DB803D datasheet for electrical characteristics. Consider the 9DB833 series if PCIe Gen3 support at lower frequencies is needed. Verify input signal compatibility with HCSL sources such as CK410B+, CK505, or CK509B generators.

Part Context

This part belongs to the 9DB803 family of differential buffers compatible with Intel DB800v2 specifications. It serves as a downstream buffer driven by main clock generators. The 'DFILFT' designation specifies the 48-SSOP package, industrial temperature range, and reel packaging format within the broader Renesas clock product line.

Replacement Considerations

Publicly confirmed substitute part numbers are not available in the provided documentation. Evaluate the 9DB803DFLF for identical electrical performance in tube packaging. Cross-reference with the 9DB833AGILF for Gen3 applications if frequency requirements change.