5V41236NLG8

Overview

The 5V41236NLG8 is a PCIe Gen2/3 compliant spread-spectrum clock generator manufactured by Renesas Electronics. It features four differential HCSL outputs designed to reduce electromagnetic interference in communication and embedded systems. The device supports output frequencies of 100 MHz and 200 MHz, with a typical power consumption of 413 mW at a 3.3 V supply. Key performance metrics include cycle-to-cycle jitter under 100 ps and output-to-output skew under 50 ps. Spread amount and frequency are selectable via hardware pins without software configuration.

Feature Summary

• Four differential HCSL outputs for driving multiple devices
• Spread-spectrum capability to substantially reduce EMI
• Hardware-selectable spread percentage and output frequency
• PCIe Gen2 phase jitter < 3.0 ps RMS; PCIe Gen3 phase jitter < 1.0 ps RMS

Applications

• Communication systems requiring low EMI
• Embedded systems demanding precise clocking
• PCI Express Gen2 and Gen3 compliant designs

Procurement Notes

Verify the package type against project requirements, as the 5V41236 series is available in both 20-pin TSSOP and VFQFPN configurations. Confirm that the specific NLG8 suffix corresponds to the required thermal and mechanical specifications for the target PCB layout. Ensure compatibility with the 3.3 V supply voltage and check for any recent Product Change Notifications regarding assembly sites or labeling updates.

Selection Notes

Select this component when four differential outputs are necessary for PCIe applications. Compare the 413 mW typical power consumption against system thermal constraints. Verify that the 100 MHz or 200 MHz fixed output frequencies meet the design needs, as the device relies on pin selection rather than programmability for frequency setting. Consider the 28.6 mm² package area for board space planning.

Part Context

The 5V41236 belongs to the 5V4123x family of PCIe clock synthesizers. It serves as a higher-output alternative to the 5V41235, which provides only two outputs. Both devices share similar jitter performance and spread-spectrum capabilities but differ in output count and package options, allowing designers to choose based on fan-out requirements.

Replacement Considerations

The 5V41235NLG8 is a related part within the same family but offers only two differential outputs instead of four. Designers requiring fewer outputs may consider this substitute if board space or cost is a primary constraint, provided the signal distribution requirements are met.