9DBL0455NLGI8

Overview

The 9DBL0455NLGI8 is a 4-output zero-delay/fanout clock buffer manufactured by Renesas Electronics Corporation. It operates at 3.3V and supports PCIe Gen 1 through Gen 6 standards, accommodating both Common and Independent Reference Clock architectures. The device features low power HCSL (LP-HCSL) outputs that allow direct connection to 85Ω transmission lines without external resistors. It includes dedicated output enable pins for each channel and supports spread spectrum input tolerance. Configuration is managed via an SMBus interface with three selectable addresses.

Feature Summary

• Supports PCIe Gen 1 through Gen 6 with additive jitter less than 18fs RMS in fanout mode
• Four LP-HCSL differential outputs eliminate the need for series termination resistors
• Zero-delay buffer mode provides high-bandwidth phase alignment
• SMBus configuration interface with three selectable addresses

Applications

• PCI Express (PCIe) system clock distribution
• Server and storage backplane clocking
• High-speed data communication interfaces requiring low skew

Part Context

This component belongs to the 9DBL04 family of PCIe clock buffers. It shares the same 32-pin 5mm × 5mm VFQFPN package and core functionality as variants like the 9DBL0452, differing primarily in specific configuration settings or manufacturing lot attributes defined by the ordering suffix.

Replacement Considerations

The 9DBL0452 is a functionally similar member of the same product family sharing the same package and electrical characteristics. Verify specific configuration requirements against the datasheet before substitution.