9FGU0831CKILFT

Overview

The 9FGU0831CKILFT is an obsolete 8-output clock generator from Renesas Electronics, designed for PCI Express Gen 1/2/3 applications. It operates on a 1.5V supply and features LP-HCSL outputs to reduce power consumption and board space by eliminating external termination resistors. The device includes programmable slew rates, output amplitude tuning, and selectable spread spectrum options (-0.25% or -0.5%) for EMI reduction. It utilizes a 48-pin VFQFPN package (6x6 mm) with a -40°C to +85°C operating temperature range.

Feature Summary

• Eight LP-HCSL differential outputs for low-power PCIe signaling
• Programmable slew rate and output amplitude for signal integrity optimization
• Selectable spread spectrum modulation (-0.25%, -0.5%, or off)
• Hardware output enable pins for individual clock management

Applications

• PCI Express Gen 1, 2, and 3 system clocks
• Low-power server and workstation platforms
• Industrial equipment requiring strict thermal management

Procurement Notes

This component is officially listed as obsolete by the manufacturer. Verification of availability requires checking authorized distributors for remaining stock or end-of-life inventory. No new production units are expected; procurement should focus on existing surplus supplies.

Selection Notes

Select this part for designs requiring eight low-power PCIe clock outputs with minimal external components. Ensure compatibility with 1.5V logic levels and verify that the 48-pin VFQFPN footprint fits the PCB layout constraints. Consider the 9FGU0841AKLFT if updated variants are available in the same family.

Part Context

Part of the IDT/Renesas 1.5V Ultra-Low-Power PCIe clock family. It replaces older 3.3V PCIe clock generators, offering significant power savings and reduced thermal dissipation for high-density electronic systems.

Replacement Considerations

The 9FGU0841AKLFT is a related variant within the same product line. Verify pinout compatibility and electrical specifications before substitution.