ICS9FG104DFILFT

Overview

The ICS9FG104DFILFT is a frequency timing generator manufactured by Renesas Electronics Corporation, housed in a 28-SSOP package. It synthesizes output frequencies from a 14.31818 MHz or 25 MHz crystal input, or a reference clock. The device provides four differential HCSL output pairs compliant with Intel CK410 specifications, supporting PCIe Gen 2 and SATA applications. Key electrical parameters include a maximum frequency of 400 MHz, an operating temperature range of -40°C to +85°C, and a supply voltage of 3.135V to 3.465V. It features cycle-to-cycle jitter of less than 50 ps and supports spread spectrum functionality.

Feature Summary

• Provides four differential 0.7V current-mode output pairs compliant with Intel CK410 specifications.
• Supports two spread spectrum modes: 0 to -0.5% downspread and +/-0.25% centerspread.
• Features cycle-to-cycle jitter less than 50 ps and output-to-output skew less than 35 ps.
• Allows frequency selection via strap pins or SMBus control.

Applications

• Intel CPU Server
• PCI Express (PCIe)
• SATA

Procurement Notes

Verify the specific suffix 'DFILFT' against official documentation to confirm the industrial temperature grade (-40°C to +85°C) and tape-and-reel packaging. Ensure compatibility with the required input crystal frequency (14.31818 MHz or 25 MHz) and check for any pinout variations between SSOP and TSSOP packages if alternative versions are considered.

Selection Notes

Select this component when designing systems requiring low-jitter differential clocks for PCIe Gen 2 or SATA interfaces. It is suitable for environments requiring industrial temperature operation. Consider the need for SMBus programmability versus fixed strap-pin configuration when finalizing the design. Ensure the PCB layout accommodates the 28-SSOP package dimensions and differential routing requirements.

Part Context

This part belongs to the ICS9FG104D family of frequency generators originally developed by IDT and now managed by Renesas Electronics. It is designed to replace older clock generation solutions in high-speed digital systems. The 'D' variant specifically targets CPU, QPI, FBD, PCIe Gen 2, and SATA applications, offering a balance of performance and configurability through its PLL architecture.

Replacement Considerations

Public confirmed substitute part numbers are not available in the provided source material. Users should consult official Renesas documentation for recommended replacements or cross-reference with similar devices in the ICS9FG104 series, ensuring pin compatibility and electrical parameter alignment.