9DBV0741AKLFT

Overview

The 9DBV0741AKLFT is a 7-output, 1.8V PCIe fanout clock buffer from Renesas Electronics. It features integrated terminations for direct connection to 100Ω transmission lines, eliminating the need for external resistors. The device supports HCSL differential input and LP-HCSL output signaling with an operating frequency range of 1 MHz to 200 MHz. It includes seven individual output enable pins for power management and three selectable SMBus addresses for configuration. The component is housed in a space-saving 5x5 mm, 32-pin VFQFPN package.

Feature Summary

• Seven differential outputs with integrated 100Ω terminations
• HCSL-compatible differential input supporting spread spectrum inputs
• Individual OE# pins for per-output power management
• SMBus-selectable features including programmable slew rate and amplitude

Applications

• PCI Express (Gen 1-5) systems requiring clock distribution
• Servers and storage arrays
• Automated Test Equipment (ATE)
• Master/Slave clocking architectures

Procurement Notes

Verify the specific suffix 'AKLFT' against the manufacturer's current datasheet to confirm package type, temperature range, and lead-free status. Note that Renesas timing products are transitioning to SiTime; ensure documentation sources are updated for the latest specifications and availability details.

Selection Notes

Select this component when a 1.8V supply is required for PCIe clock distribution. Compare against the 9DBU0741 series if a 1.5V supply or different termination characteristics are needed. Ensure the 200 MHz maximum frequency meets the system's PCIe generation requirements.

Part Context

This part belongs to the 9DBV05x1-9DBV07x1-9DBV09x1 family of PCIe fanout buffers. These devices are designed to replace standard HCSL buffers by integrating terminations, thereby saving board space and reducing component count. The 9DBV0741 specifically provides seven outputs, bridging the gap between the 5-output and 9-output variants.

Replacement Considerations

The 9DBU0741AKILFT is a similar 7-output buffer but operates at 1.5V instead of 1.8V. Verify voltage compatibility before substitution. Other family members include the 9DBV0541 (5 outputs) and 9DBV0941 (9 outputs).