5V41236NLGI

Overview

The 5V41236NLGI is a PCIe Gen2/3 compliant spread-spectrum-capable clock generator manufactured by Renesas Electronics. It features four differential HCSL outputs and supports output frequencies of 100 MHz and 200 MHz. The device utilizes a single 25 MHz crystal input and operates on a 3.3 V supply voltage. Key electrical specifications include cycle-to-cycle jitter less than 100 ps, output-to-output skew under 50 ps, and phase jitter below 3.0 ps RMS for PCIe Gen2 and 1.0 ps RMS for PCIe Gen3. It is housed in a 20-VFQFPN (4x4) package with an exposed pad.

Feature Summary

• Four differential HCSL outputs designed for low electromagnetic interference (EMI) via spread-spectrum capability.
• Pin-selectable spread percentage and output frequency, eliminating the need for software configuration.
• Compliant with PCIe Gen2 and Gen3 phase jitter requirements (<3.0 ps RMS and <1.0 ps RMS respectively).
• Operates within an industrial temperature range of -40°C to +85°C.

Applications

• PCI Express (PCIe) Gen2 and Gen3 system clock generation.
• Communication equipment requiring low-jitter clock synthesis.
• Embedded systems demanding EMI reduction through spread-spectrum techniques.

Part Context

The 5V41236NLGI belongs to the 5V41236 family of clock synthesizers. This specific variant uses a 20-lead VFQFPN package. It is functionally similar to other members of the series but distinguished by its package type and pinout configuration compared to TSSOP variants like the 5V41236PGGI.

Replacement Considerations

The 5V41236NLGI is marked as obsolete/not recommended for new designs. The 5V41236PGGI is listed as a similar replacement option, though it utilizes a TSSOP-20 package instead of the VFQFPN format. Designers must verify mechanical compatibility when substituting packages.