9FGL6241AQ301LTGI

Overview

The Renesas 9FGL6241 is a 3.3V PCIe Gen 1–6 clock generator designed for Common Clock (CC) and Separate Reference Independent Spread (SRIS) architectures. It features two differential LP-HCSL outputs with integrated 100Ω terminations, eliminating the need for external resistors. The device supports SMBus-selectable spread spectrum frequencies of -0.5% and -0.25%, alongside a zero-spread option. Operating at 25MHz or 100MHz reference inputs, it consumes approximately 112mW typ. Packaged in a 4mm x 4mm 24-VFQFPN, it includes dedicated OE# pins for PCIe CLKREQ# support.

Feature Summary

• Integrated 100Ω differential output terminations save four resistors per output pin
• SMBus-selectable spread spectrum options: CC 0%, SRIS 0%, and SRIS -0.25%
• Supports PCIe Gen 1–6 Common Clock (CC) and Separate Reference Independent Spread (SRIS) architectures
• Dedicated OE# pins on each output supporting PCIe CLKREQ# functionality

Applications

• PCIe master/slave clock generation
• Clock multiplexing applications
• Single and dual-ported NVMe SSDs

Procurement Notes

Verify the specific suffix 'LTGI' against the manufacturer's current datasheet to confirm package type and moisture sensitivity level. Ensure the ordering quantity aligns with the factory packaging requirements specified by Renesas Electronics for this component series.

Selection Notes

Select the 9FGL6241 when 100Ω system impedance is required, as opposed to the 85Ω variant. Confirm that the design utilizes either Common Clock or Separate Reference Independent Spread architectures. Verify compatibility with 25MHz or 100MHz input reference frequencies before finalizing the bill of materials.

Part Context

The 9FGL6241 belongs to the 9FGL0241/51 family of intelligent PCIe clock generators. It serves as the 100Ω termination counterpart to the 9FGL6251, which provides 85Ω terminations. Both devices share similar architectural capabilities but differ in output impedance matching to accommodate different transmission line requirements in PCIe designs.

Replacement Considerations

The 9FGL6251AQ301LTGI is a direct functional alternative if the application requires 85Ω output impedance instead of 100Ω. Other members of the 9FGL0241/51 family may be considered if different spread spectrum configurations or package types are needed.