9DBU0441AKLFT

Overview

The 9DBU0441AKLFT is a low-power PCIe clock buffer manufactured by Renesas Electronics. It features four differential outputs with integrated 100-ohm terminations for direct connection to transmission lines, eliminating external resistors. The device operates on a single 1.5V supply and supports input frequencies from 1 MHz to 167 MHz. It includes programmable slew rates and output amplitudes, SMBus interface control, and spread spectrum compatibility for EMI reduction.

Feature Summary

• Four differential LP-HCSL outputs with integrated 100-ohm termination resistors
• Single 1.5V power supply with typical 45 mW power consumption in PLL mode
• Programmable slew rate and output amplitude for line length tuning
• SMBus interface with selectable addresses for configuration and control

Applications

• PCI Express Gen 1, 2, and 3 systems
• Zero-delay fanout clock buffering
• Low-power server and storage platforms

Procurement Notes

Verify the RoHS3 compliance status and MSL rating (Level 3) before procurement. Confirm the package type is 32-VFQFPN (5x5 mm). Check for any active Product Change Notifications regarding assembly sites or labeling changes that may affect component sourcing.

Selection Notes

Select this component when a 1.5V PCIe clock distribution solution is required. Ensure the design utilizes 100-ohm differential transmission lines to leverage the integrated termination. Verify that the system requires four differential outputs and supports SMBus configuration for clock management.

Part Context

This part belongs to the Renesas 9DBU0441 series of ultra-low-power PCIe clock buffers. It is designed to replace legacy discrete clocking solutions by integrating termination resistors and providing flexible output drive capabilities within a compact 32-pin VFQFPN package.

Replacement Considerations

The 9DBU0441AKLF is a non-flux variant of the same electrical specification. Verify if the specific flux content requirement dictates the choice between the AKLFT and AKLF suffixes.