9DB306BLLFT

Overview

The 9DB306BLLFT is a high-performance jitter attenuator manufactured by Renesas Electronics Corporation, designed for PCI Express systems. It functions as a differential-to-LVPECL clock buffer with a 1:6 input-to-output ratio. The device accepts various input types including LVPECL, LVDS, and HCSL, supporting a maximum output frequency of 140MHz. It operates on a 3.3V supply voltage within an ambient temperature range of 0°C to 70°C. Key electrical specifications include a maximum output skew of 135ps and a cycle-to-cycle jitter of 30ps. The component utilizes a PLL with selectable bandwidth modes to manage jitter attenuation and spread spectrum modulation.

Feature Summary

• Six differential LVPECL output pairs
• Supports multiple input types: LVPECL, LVDS, LVHSTL, SSTL, HCSL
• Selectable PLL bandwidth modes (Low: ~500kHz, High: 1MHz)
• Maximum output frequency of 140MHz

Applications

• PCI Express systems in desktop PCs
• Zero delay buffering for low bandwidth, high phase noise PLL synthesizers
• Attenuating high-frequency random and deterministic jitter from system boards

Procurement Notes

Verify the specific suffix 'BLLFT' against official Renesas documentation to confirm package type and tape-and-reel specifications. Ensure compatibility with RoHS 6 standards. Confirm availability status as distribution data may vary. Check for any recent Product Change Notifications regarding assembly sites or materials.

Selection Notes

Select this component when a 1:6 LVPECL fanout with jitter attenuation is required for PCIe applications. Consider the 140MHz frequency limit and 3.3V supply constraints. Evaluate the need for spread spectrum tolerance; the low bandwidth mode supports triangular profiles while the high bandwidth mode passes more modulation. Verify thermal requirements against the 0°C to 70°C operating range.

Part Context

The 9DB306 series belongs to Renesas' portfolio of high-performance clock buffers and jitter attenuators. This specific model is derived from earlier ICS designs now under Renesas Electronics. It serves as a critical timing solution for stabilizing reference clocks in high-speed serial interfaces like PCI Express, ensuring signal integrity across multiple downstream receivers.