9DBU0741AKLFT

Overview

The 9DBU0741AKLFT is a 7-output, 1.5V PCIe fanout clock buffer from Renesas Electronics. It operates within a frequency range of 1 MHz to 167 MHz and supports PCI Express Gen1, Gen2, and Gen3 standards. The device features HCSL differential inputs and LP-HCSL outputs, powered by a 1.425V to 1.575V supply. Packaged in a space-saving 5x5 mm 40-pin VFQFPN with an exposed pad, it includes integrated terminations for direct connection to 100Ω transmission lines. The component functions within a commercial temperature range of 0°C to 70°C.

Feature Summary

• Seven output enable pins allow individual clock management and power control.
• Integrated terminations eliminate the need for external resistors on 100Ω transmission lines.
• Programmable slew rate and output amplitude settings optimize performance for various line lengths and environments.
• Supports spread spectrum clocking to reduce electromagnetic interference (EMI).
• Features three selectable SMBus addresses for flexible multi-device configurations.

Applications

• PCI Express Gen1, Gen2, and Gen3 system clock distribution.
• High-performance computing platforms requiring low-power clock buffering.
• Telecommunications infrastructure utilizing PCIe interconnects.

Procurement Notes

Verify the package marking and date code against the manufacturer's latest Product Change Notifications (PCNs) prior to procurement. Confirm that the specific suffix matches the required RoHS compliance status. Ensure storage conditions adhere to the Moisture Sensitivity Level (MSL) 3 rating to prevent damage during soldering processes.

Selection Notes

Select this component when a seven-channel fanout solution is required for 1.5V PCIe applications. Compare against the 9DBU0941 for nine outputs or the 9DBU0441 for four outputs if channel counts differ. Verify that the input source provides compatible HCSL signals and that the board layout accommodates the 40-pin VFQFPN footprint.

Part Context

This part belongs to the IDT 1.5V Ultra-Low-Power (ULP) PCIe family, now managed by Renesas Electronics following their acquisition of IDT's timing products. The series is designed to minimize power consumption while maintaining signal integrity for high-speed serial interfaces.

Replacement Considerations

Publicly confirmed substitute part numbers are not available in the provided documentation. Engineering change notices should be reviewed for potential obsolescence or assembly site changes affecting this specific model.