9DBV0541AKLF

Overview

The 9DBV0541AKLF is a 5-output, 1.8V PCIe fanout clock buffer manufactured by Renesas Electronics Corporation. It operates within a frequency range of 1 MHz to 200 MHz and features HCSL-compatible differential inputs with LP-HCSL differential outputs. The device integrates terminations for direct connection to 100Ω transmission lines, eliminating the need for external resistors. It supports spread spectrum input for EMI reduction and includes five output enable pins for clock management. The component is housed in a space-saving 32-pin VFQFPN package measuring 5mm x 5mm.

Feature Summary

• Five differential outputs with integrated 100Ω termination resistors for direct connection to PCIe transmission lines
• HCSL-compatible differential input and LP-HCSL differential output signaling
• SMBus-selectable features including three selectable addresses and individual output enables
• Spread spectrum compatible input for electromagnetic interference reduction

Applications

• PCI Express (Gen 1–5) system clock distribution
• High-performance computing platforms requiring low power consumption
• Servers and workstations utilizing multiple PCIe slots

Procurement Notes

Verify RoHS compliance status and moisture sensitivity level (MSL) before procurement. Confirm that the specific suffix 'AKLF' matches the required packaging and lead-free specifications. Check for product change notifications or end-of-life announcements from Renesas or its successor entity, SiTime, as the timing product portfolio has been acquired. Ensure compatibility with legacy 3.3V tolerant SMBus controllers if interface integration is planned.

Selection Notes

Select this component when a 1.8V supply voltage is available and five differential clock outputs are required. The integrated termination resistors reduce board space and component count compared to standard HCSL buffers. Verify that the operating frequency range of 1 MHz to 200 MHz meets the target PCIe generation requirements. Consider the 32-VFQFPN package dimensions for PCB layout constraints.

Part Context

The 9DBV0541AKLF belongs to the 9DBV05x1-9DBV07x1-9DBV09x1 family of PCIe fanout clock buffers. This family shares common architectural features such as SMBus configurability and integrated terminations. The device is part of Renesas' broader timing portfolio, which has transitioned under SiTime ownership. Related parts in the series include variants with different output counts, such as the 9DBV0641AKLF and 9DBV0941AKLF.

Replacement Considerations

Public confirmed substitute part numbers are not provided in the source data. Designers should consult official cross-reference tools or contact the manufacturer for verified alternatives.