9FGL6251AP302NDGI

Overview

The 9FGL6251AP302NDGI is a clock generator and buffer from the Renesas 9FGL6251 series, designed for PCIe Gen 1–6 applications. It operates at 3.3V with two LP-HCSL differential outputs providing 85Ω impedance. The device supports Common Clock (CC) and Separate Reference Independent Spread (SRIS) architectures, defaulting to -0.5% spread spectrum in 302 configurations. It accepts 25MHz or 33.33MHz reference inputs and includes integrated output terminations to reduce external component count.

Feature Summary

• Supports PCIe CC and SRIS clocking architectures with SMBus-selectable -0.25% spread spectrum
• Two 100MHz Low-power HCSL outputs with 85Ω impedance and integrated DIF terminations
• Automatically detects input clock presence and switches modes; includes one open-drain CC_IR output
• Available in 4mm × 4mm 28-VQFP-N package with external crystal option

Applications

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

Procurement Notes

Verify the specific suffix NDGI against the manufacturer datasheet to confirm the tray packaging quantity of 490 units. Ensure the 302 configuration requirement matches the design need for -0.5% SSC defaults. Confirm RoHS compliance status directly from the official documentation before procurement.

Selection Notes

Select this part for designs requiring 85Ω LP-HCSL outputs with integrated termination resistors. The 302 suffix indicates a default -0.5% spread spectrum configuration suitable for SRIS or CC architectures. Verify that the 28-VQFP-N package fits the PCB layout constraints compared to the LGA variant.

Part Context

This component belongs to the 9FGL6251 family of intelligent PCIe clock buffers/generators. The AP302NDGI designation specifies the automotive-grade temperature range, 302 configuration (-0.5% SSC), and NDGI tray packaging. It serves as the root part for related 31/41/51 variants within the same series.

Replacement Considerations

Publicly confirmed substitute part numbers are not available in the provided source material.