9FGL6251AP201NDGI

Overview

The 9FGL6251AP201NDGI is a clock generator and buffer from the Renesas 9FGL6251 series, designed for PCIe and NVMe applications. It supports Common (CC) and Independent Reference (IR) architectures with automatic input clock detection and mode switching. The device features two differential LP-HCSL outputs with integrated 85Ω terminations, eliminating external resistors. It accepts 25MHz or 33.33MHz reference inputs via crystal or LVCMOS/LVDS signals. Operating voltage ranges from 2.5V to 3.3V, with a 1.8V supply for the reference input. The component is housed in a 28-VQFP-N package.

Feature Summary

• Intelligent clock mode switching with automatic detection of input clock presence
• Two low-power HCSL (LP-HCSL) differential outputs with integrated 85Ω termination
• Supports SRnS/IR and CC architectures with SMBus-selectable spread spectrum (-0.25%, -0.5%, 0%)
• Integrated crystal option available for Q suffix variants; REF clock output capability

Applications

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

Procurement Notes

Verify the specific suffix 'P201' against official Renesas documentation to confirm pinout and electrical characteristics, as variations exist within the 9FGL6251 family. Confirm moisture sensitivity level and reel packaging quantities directly with the manufacturer or authorized distributors, as these parameters are critical for surface-mount assembly processes.

Selection Notes

Select this component for designs requiring intelligent clock management in NVMe or PCIe environments. Ensure the design supports the required 2.5V or 3.3V VDD supply and 1.8V VDDREF. Verify that the integrated 85Ω output impedance matches the PCB trace requirements, distinguishing it from the 100Ω variant found in the 9FGL6241 series.

Part Context

This part belongs to the 9FGL6251 series, which serves as the root platform for various configurations including 31, 41, and 51 suffixes. The series is optimized for high-performance storage controllers, providing flexible clock generation and distribution capabilities while reducing bill-of-materials count through integrated terminations and crystal options.

Replacement Considerations

The 9FGL6251AQ302LTGI8 is a documented related part within the same series. Verify functional compatibility regarding output impedance and package type before substitution. Other members of the 9FGL6251 family may offer different pinouts or feature sets.