290G-19LF

Clock Generators, PLLs, Frequency Synthesizers Overview

The Renesas 290G-19LF is a high-performance clock distribution integrated circuit designed for demanding digital systems. Operating at frequencies up to 400MHz, this component functions as a CPU and PCI Express fanout buffer with a 1:4 input-to-output ratio. It accepts HCSL differential inputs and provides four differential clock outputs, ensuring signal integrity across complex architectures. The device is housed in a compact 20-VFQFN package with exposed pad, measuring 4x4mm, suitable for surface-mount assembly. It supports a supply voltage range of 3.135V to 3.465V and operates within a commercial temperature range of 0°C to 70°C. This IC is classified under the Clock/Timing category.

Clock Generators, PLLs, Frequency Synthesizers Feature Summary

• Provides precise clock distribution for high-speed processors and peripheral interfaces
• Supports PCI Express applications with dedicated fanout buffering capabilities
• Features low skew performance to maintain timing accuracy across multiple loads

Clock Generators, PLLs, Frequency Synthesizers Applications

• PCI Express interface clock distribution
• High-speed processor system clocks
• Server and storage controller timing networks

Clock Generators, PLLs, Frequency Synthesizers Procurement Notes

Verify current lifecycle status carefully, as availability may be limited due to end-of-life transitions. Confirm exact package marking and revision level against design specifications. Ensure thermal management aligns with the VFQFN exposed pad requirements. Cross-reference pinouts if substituting from previous generations. Validate RoHS compliance documentation for final assembly integration.

Clock Generators, PLLs, Frequency Synthesizers Selection Notes

Select this component when designing systems requiring reliable 1:4 clock fanout for PCIe or CPU buses. Consider the specific HCSL input compatibility and output drive strength requirements. Evaluate board space constraints given the small 4x4mm footprint. Assess thermal dissipation needs for the QFN package in enclosed environments.

Clock Generators, PLLs, Frequency Synthesizers Part Context

This part belongs to Renesas' legacy clock distribution portfolio, originally developed under Intersil. It serves as a critical timing element in infrastructure equipment where stable, low-jitter clock signals are essential for data integrity. The series complements other Renesas timing solutions for comprehensive system synchronization.

Clock Generators, PLLs, Frequency Synthesizers Replacement Considerations

Check for official manufacturer-recommended alternatives such as the 9DBL411BKLF. Verify electrical parameter equivalence and pin compatibility before substitution. Review any package changes that might impact PCB layout.