9FGL6241AQ302LTGI

Overview

The 9FGL6241AQ302LTGI is a PCI Express (PCIe) clock generator IC from Renesas Electronics, designed for high-speed serial link applications. It operates with a single output frequency of 100MHz and features one differential output channel. The device utilizes a Phase-Locked Loop (PLL) architecture to generate precise clock signals. It supports input frequencies of 25MHz or 33.1/3 MHz via crystal or LVCMOS sources. Power consumption is typically 65mW, operating within supply voltage ranges of 1.71V–1.89V, 2.375V–3.465V, and 3.135V. The component is housed in a 28-VFQFPN (4x4mm) package with an exposed pad, suitable for surface mount installation across a temperature range of -40°C to +85°C.

Feature Summary

• Supports PCIe Common Clock (CC), Separate Reference No Spread (SRnS), and Separate Reference Independent Spread (SRIS) architectures.
• Features integrated terminations on differential outputs to reduce external resistor count.
• Includes an open-drain CC_IR output indicating the current PCIe clock mode.
• Provides SMBus-selectable spread spectrum options including 0%, -0.25%, and -0.5%.

Applications

• Single and dual-ported NVMe SSDs
• U.2 and M.2 form factor storage devices
• PCIe master/slave clocking systems
• Clock multiplexing applications

Procurement Notes

Verify the specific suffix LTGI against the manufacturer's datasheet to confirm packaging type and moisture sensitivity level. Ensure compatibility with the required input reference clock frequency (25MHz or 33.1/3 MHz). Confirm that the 28-VFQFPN package dimensions align with the PCB footprint design. Check for RoHS compliance status as indicated in official documentation.

Selection Notes

Select this model when a single 100MHz differential output is required for PCIe Gen 1 through Gen 6 compliant designs. Choose the AQ variant if specific automotive or extended qualification requirements are met, though standard industrial grades may suffice for general server/storage use. Compare with the 9FGL6251 series if multiple outputs or internal crystal options are needed instead of external references.

Part Context

This component belongs to the 9FGL6251 family of intelligent PCIe clock buffers and generators. While the base part number indicates a single-output configuration, the family includes variants with two or four outputs. The 9FGL6241 series specifically targets low-power applications with integrated output terminations, distinguishing it from higher-output-count counterparts in the same product line.

Replacement Considerations

Direct substitutes include other members of the 9FGL62xx series such as the 9FGL6251AQ302LTGI for multi-output needs. Verify pin-to-pin compatibility before replacing with generic PCIe clock generators, as termination resistors and I/O standards (LP-HCSL vs LVDS) may differ.