841S102EGILFT

Overview

The 841S102EGILFT is a PLL-based clock synthesizer from the FemtoClock family, designed for PCI Express applications. It generates a 100MHz differential HCSL output from a 25MHz reference input. The device supports spread spectrum clocking via an I2C interface to reduce EMI. It operates on a single 3.3V supply within a -40°C to +85°C temperature range and is housed in a 20-TSSOP package.

Feature Summary

• Generates 100MHz differential HCSL clock from 25MHz crystal or external reference
• I2C-controlled spread spectrum clocking with selectable -0.35% or -0.5% down-spread
• On-chip crystal oscillator supporting 25MHz reference inputs
• Lead-free RoHS compliant packaging

Applications

• PCI Express (PCIe) clock generation
• Systems requiring low jitter clock synthesis
• EMI reduction through spread spectrum modulation

Procurement Notes

Verify the suffix 'EGILFT' against official Renesas documentation to confirm lead-free status and tape-and-reel packaging specifications. Ensure compatibility with standard I2C bus interfaces for configuration. Confirm that the 20-TSSOP footprint matches the target PCB design constraints.

Selection Notes

Select this component when a fixed 100MHz differential HCSL output is required from a 25MHz source. It is suitable for designs needing integrated spread spectrum capabilities without external programmable logic. Verify power supply stability at 3.3V and ensure adequate thermal management for the TSSOP-20 package.

Part Context

This part belongs to the 841S102I series of clock synthesizers. It shares functional similarities with other FemtoClock devices but is specifically optimized for PCIe timing requirements. The 'EGILFT' designation indicates specific environmental and packaging attributes defined by the manufacturer.

Replacement Considerations

Direct substitutes include other 841S102 variants with compatible pinouts and electrical characteristics. Verify that alternative parts support the same 100MHz output frequency and HCSL signaling levels.