9FGL6251AQ201LTGI

Overview

The 9FGL6251AQ201LTGI is an intelligent PCIe clock buffer and generator manufactured by Renesas Electronics. It supports Common (CC) and Independent Reference (IR) clocking architectures, making it suitable for single and dual-ported nVME SSDs in U.2 and M.2 form factors. The device features two differential LP-HCSL outputs with 85Ω impedance and integrated terminations. It accepts 25MHz or 33 1/3MHz reference clocks and operates at 2.5V or 3.3V supply voltages.

Feature Summary

• Automatically detects input clock presence and switches modes
• Integrated crystal option available (Q option)
• Two 100MHz Low-power HCSL outputs with 85Ω impedance
• SMBus-selectable spread spectrum capabilities

Applications

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

Procurement Notes

Verify the specific suffix LTGI against official Renesas documentation to confirm package type and moisture sensitivity level. Ensure compatibility with required operating voltage and reference clock frequency before procurement.

Selection Notes

Select this component for designs requiring intelligent clock switching between CC and IR architectures. Verify that the 85Ω output impedance matches the load requirements of the target PCIe interface.

Part Context

This part belongs to the 9FGL6251 series of intelligent clock buffers. It serves as a root part for various configurations including 31, 41, and 51 variants, offering flexibility in clock generation and distribution for high-speed serial interfaces.

Replacement Considerations

Check for direct pin-to-pin replacements within the 9FGL6251 family. Confirm that alternative parts support the same LP-HCSL output signaling and integrated termination requirements.