5V41235NLG8

Overview

The 5V41235NLG8 is a PCIe Gen2/3 compliant spread spectrum clock generator manufactured by Renesas Electronics. It features two differential HCSL output pairs capable of driving LVDS loads, designed to reduce electromagnetic interference in communication and embedded systems. The device supports fixed output frequencies of 25 MHz, 100 MHz, 125 MHz, and 200 MHz, selectable via hardware pins without software configuration. It operates on a single 3.3V supply with typical power consumption of 281 mW. Key performance metrics include cycle-to-cycle jitter under 100 ps and output-to-output skew under 50 ps.

Feature Summary

• PCIe Gen2/3 Compliant: Supports phase jitter requirements of <3.0ps RMS for Gen2 and <1.0ps RMS for Gen3.
• Spread Spectrum Capability: Reduces EMI through selectable spread amounts and frequency pin selection.
• Flexible Output Signaling: Provides two differential HCSL outputs that can be terminated to LVDS.
• Hardware Configuration: Fixed output frequencies (25MHz, 100MHz, 125MHz, 200MHz) selected via pins; no software required.

Applications

• PCI Express (PCIe) Gen2 and Gen3 system clocking
• Ethernet applications requiring 25 MHz or 125 MHz references
• Embedded systems demanding low EMI solutions

Procurement Notes

Verify the specific suffix 'NLG8' against the manufacturer's current datasheet to confirm package type (16-VFQFPN) and temperature range (0°C to 70°C). Check for Product Change Notifications (PCN) regarding assembly site changes or labeling updates, as these may affect physical identification without altering electrical function. Ensure moisture sensitivity level (MSL 3) handling protocols are followed during assembly.

Selection Notes

Select this component when a fixed-frequency, hardware-configurable clock source is required for PCIe interfaces. It is suitable for designs needing spread spectrum functionality to meet EMI standards without complex programming interfaces. Compare against the broader 5V41235 family if different packages (TSSOP vs MLF) or industrial temperature ranges are needed.

Part Context

The 5V41235NLG8 belongs to the IDT/Renesas 5V41235 series of PCIe synthesizers. This series includes variants with different packages and temperature ratings. The NLG8 suffix specifically denotes the 16-lead VFQFPN (MLF) package with commercial operating temperature limits. It serves as a direct replacement for legacy IDT parts in updated Renesas portfolios.

Replacement Considerations

Publicly confirmed substitute part numbers are not available in the provided documentation. Verify compatibility with existing board layouts due to potential differences in pinout or thermal characteristics between package variants within the same series.