ICS9FG108DGLFT Equivalent & Substitute Parts

Part Overview

The ICS9FG108DGLFT is a Clock/Frequency Synthesizer IC manufactured by Renesas Electronics Corporation, designed for Intel CPU Server, PCI Express (PCIe), and SATA applications. This device generates a 400MHz output from clock or crystal input using a Phase-Locked Loop (PLL) architecture with a 1:9 input-to-output frequency ratio. The part is classified as Obsolete, making identification of functionally equivalent alternatives necessary for ongoing system support and new design implementations.

Substiute Parts

ICS9FG108DGLFT

Renesas Electronics CorporationIn Stock: 4482ICS9FG108DGLFT Datasheet

Current PartRFQ

9FG108EGLFT

Renesas Electronics CorporationIn Stock: 21899FG108EGLFT Datasheet

DirectRFQ

9FG108EGLF

Renesas Electronics CorporationIn Stock: 11709FG108EGLF Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution for the ICS9FG108DGLFT is determined by strict equivalence across the following electrical and mechanical parameters:

• Frequency output capability (400MHz maximum)
• Supply voltage range (3.135V ~ 3.465V)
• Output signal type (HCSL)
• Input-to-output ratio (1:9)
• Package type (48-TFSOP)
• Differential input/output configuration (No/Yes)
• Operating temperature range (0°C ~ 70°C)
• PLL architecture requirement

The substitute parts identified (9FG108EGLFT and 9FG108EGLF) maintain identical electrical specifications and physical packaging, differing only in product status and packaging format (Cut Tape/Digi-Reel versus Tube).

Parameter Comparison

Engineering Selection Recommendations

Both 9FG108EGLFT and 9FG108EGLF are direct functional equivalents to the obsolete ICS9FG108DGLFT. Selection between these two active alternatives is based on packaging and supply chain requirements:

• 9FG108EGLFT: Available in Cut Tape and Digi-Reel packaging formats, suitable for automated assembly and high-volume production environments.
• 9FG108EGLF: Available in Tube packaging, suitable for manual assembly and lower-volume applications.

Both substitute parts carry ROHS3 compliance certification, providing environmental regulatory advantage over the original part. All three parts maintain identical electrical performance characteristics and physical footprints, enabling direct board-level substitution without design modification.

Frequently Asked Questions (FAQ)

Q: Can 9FG108EGLFT and 9FG108EGLF be used interchangeably with ICS9FG108DGLFT?

A: Yes. Both substitute parts maintain identical electrical specifications, output frequency, supply voltage range, and 48-TFSOP package dimensions. Direct substitution is supported at the component level.

Q: What is the primary difference between 9FG108EGLFT and 9FG108EGLF?

A: The parts differ only in packaging format. 9FG108EGLFT is supplied in Cut Tape and Digi-Reel formats for automated pick-and-place assembly. 9FG108EGLF is supplied in Tube format for manual handling and lower-volume applications. Electrical performance is identical.

Q: Why is the original ICS9FG108DGLFT classified as Obsolete?

A: Obsolete status indicates the part is no longer manufactured or supported by Renesas Electronics Corporation. The active substitute parts (9FG108EGLFT and 9FG108EGLF) provide continued access to this functionality.

Q: Are there any compliance differences between the original and substitute parts?

A: The substitute parts carry ROHS3 compliance certification. All three parts maintain REACH Unaffected status and identical EAR99 export classification.

Q: Does the 48-TFSOP package remain the same across all three parts?

A: Yes. All three parts use the 48-TFSOP package with 0.240" width (6.10mm), ensuring identical PCB footprint and mounting requirements.

Q: What input types does this IC support?

A: The IC accepts Clock or Crystal input signals and generates HCSL output through a 1:9 frequency multiplication ratio using PLL architecture.