9DB1904BKLFT

Overview

The 9DB1904BKLFT is a high-performance zero-delay buffer featuring 19 differential outputs. It supports maximum input and output frequencies of 400 MHz with a maximum propagation delay of 4.5 ns. The device operates on a single supply voltage ranging from 3.135 V to 3.465 V. It utilizes HCSL differential output signaling and includes 76 integrated termination resistors. The component is housed in a 72-VFQFPN package and functions within an operating temperature range of 0°C to +70°C.

Feature Summary

• Provides 19 differential clock outputs for signal distribution
• Features zero-delay buffer architecture for precise timing alignment
• Integrates internal termination resistors to simplify board design
• Supports HCSL differential signaling standards

Applications

• Intel QPI clock distribution
• PCI Express (PCIe) clock buffering
• High-speed server memory interfaces
• System-on-module clock generation

Procurement Notes

Verify the current product status before procurement, as this component may be obsolete or no longer recommended for new designs. Confirm package availability and check for manufacturer-recommended replacements if necessary. Ensure that the specific suffix matches the required pinout and electrical characteristics for your application.

Selection Notes

Select this component when designing systems requiring a single input to drive up to 19 differential loads at frequencies up to 400 MHz. Consider the 72-VFQFPN package constraints and thermal requirements. Verify compatibility with HCSL signaling standards and ensure the power supply voltage falls within the specified 3.135 V to 3.465 V range for proper operation.

Part Context

This part belongs to Renesas' high-performance clock buffer family designed for demanding data center and server applications. It is electrically compatible with legacy Intel DB1900GS specifications, facilitating drop-in replacements in existing designs. The series focuses on low jitter and high fan-out capabilities for critical system clocks.

Replacement Considerations

Check for official replacement part numbers provided by Renesas Electronics Corporation, as this model may be obsolete. Ensure any substitute maintains the 1:19 ratio, 400 MHz frequency, and VFQFPN-72 package form factor.