9DBV0541AKLFT

Overview

The 9DBV0541AKLFT is a 5-output, 1.8V PCIe fanout clock buffer manufactured by Renesas Electronics. It operates within a frequency range of 1MHz to 200MHz and accepts HCSL differential inputs while providing LP-HCSL differential outputs. The device features integrated 100Ω terminations for direct connection to transmission lines, eliminating external resistors. It supports spread spectrum input for EMI reduction and includes five output enable pins for power management. The component is housed in a space-saving 32-VFQFPN (5x5mm) package with an exposed pad.

Feature Summary

• Five differential outputs with integrated 100Ω termination resistors for direct line connection
• HCSL-compatible differential input supporting spread spectrum modulation
• SMBus-selectable features including three selectable addresses for multi-device configurations
• Adjustable slew rate and differential output amplitude for signal integrity optimization

Applications

• PCI Express Gen 1 through Gen 5 clock distribution systems
• High-speed data acquisition and processing boards
• Telecommunications infrastructure requiring low jitter clocking
• Industrial control systems utilizing PCIe interfaces

Procurement Notes

Verify the specific suffix 'AKLFT' against the manufacturer's current datasheet to confirm packaging details and RoHS compliance status. Ensure that the required SMBus interface voltage levels match the system controller specifications. Confirm thermal requirements for the 32-VFQFPN package under maximum operating conditions.

Selection Notes

Select this component when a single HCSL source must drive up to five PCIe loads with minimal board space. The integrated termination simplifies layout compared to standard HCSL buffers. Consider the 1.8V supply constraint and ensure the design accommodates the 0°C to 70°C commercial temperature range. Verify that the 250fs typical additive phase jitter meets the system timing budget.

Part Context

This part belongs to the 9DBV05x1 family of PCIe fanout clock buffers. It shares architectural similarities with the 9DBV07x1 and 9DBV09x1 series, differing primarily in output count and package size. The 9DBV0541 offers a balance between channel density and footprint, fitting into a 5mm x 5mm area.

Replacement Considerations

Direct replacements within the same family include the 9DBV0541 without the trailing suffix if packaging differences are acceptable. For higher channel counts, the 9DBV0741 or 9DBV0941 may be considered if pin compatibility allows.