841402DKILF

Specialized ICS Overview

The ICS841402DKI is a FemtoClock crystal-to-0.7V differential HCSL clock generator designed for PCIe and sRIO applications. It utilizes a 25MHz parallel resonant crystal to generate 100MHz, 125MHz, 200MHz, or 400MHz clock signals. The device features two 0.7V differential HCSL outputs and one LVCMOS/LVTTL reference clock output. It supports configurable spread-spectrum generation for EMI reduction in PCIe systems. Operating on a full 3.3V supply, it delivers an RMS phase jitter of 1.21ps at 200MHz (12kHz–20MHz) and complies with PCI Express Gen 1, Gen 2, and Gen 3 jitter specifications.

Specialized ICS Feature Summary

• Generates 100MHz, 125MHz, 200MHz, or 400MHz from a 25MHz crystal input
• Two 0.7V differential HCSL outputs and one LVCMOS reference output
• Configurable spread-spectrum modulation (-0.5% downspread at 32kHz)
• RMS phase jitter of 1.21ps typical at 200MHz (12kHz–20MHz)

Specialized ICS Applications

• PCI Express Gen 1, Gen 2, and Gen 3 clock generation
• Serial RapidIO (sRIO) clock distribution
• Telecom, networking, and industrial equipment

Specialized ICS Procurement Notes

Verify the package type matches the 32-VFQFN (5x5mm) specification. Confirm the operating temperature range requirement aligns with the -40°C to 85°C rating. Ensure the design accommodates the 3.3V power supply voltage. Check that the application requires the specific output frequencies supported by the FSEL pin configuration.

Specialized ICS Selection Notes

Select this component when low jitter performance is critical for high-speed serial links like PCIe or sRIO. The device replaces multiple oscillator and fanout buffer solutions. Consider the PLL bypass feature if a direct reference clock feed is needed. Verify that the 0.7V HCSL output swing is compatible with the receiving SerDes inputs.

Specialized ICS Part Context

This part belongs to the ICS841402I FemtoClock family. It is manufactured by Integrated Device Technology, Inc., which was acquired by Renesas Electronics Corporation. The datasheet revision A was published on November 7, 2012. The device is available in lead-free packages compliant with RoHS 6 standards.

Specialized ICS Replacement Considerations

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