ICS9FG104DFILFT Equivalent & Substitute Parts

Part Overview

The ICS9FG104DFILFT 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 spread spectrum capability. The part is classified as Obsolete, making identification of compatible substitutes essential for system maintenance, repair, and legacy platform support.

Substiute Parts

ICS9FG104DFILFT

Renesas Electronics CorporationIn Stock: 949ICS9FG104DFILFT Datasheet

Current PartRFQ

9FG104EFILFT

Renesas Electronics CorporationIn Stock: 36379FG104EFILFT Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the ICS9FG104DFILFT is determined by strict equivalence across the following critical parameters:

• Output Frequency: 400MHz maximum
• Output Signal Type: HCSL (High-Speed Current Steering Logic)
• Input Configuration: Clock or Crystal input capability
• Frequency Multiplication Ratio: 1:5 input-to-output ratio
• Package Specification: 28-SSOP surface mount package with 5.30mm width
• Supply Voltage Range: 3.135V ~ 3.465V
• Operating Temperature Range: -40°C ~ 85°C
• Number of Output Circuits: Single circuit (1 output)
• PLL Functionality: Phase-Locked Loop architecture required

The substitute part 9FG104EFILFT maintains identical electrical specifications and mechanical compatibility with the main part, with the primary distinction being product status (Active vs. Obsolete) and packaging format (Tape & Reel vs. standard packaging).

Parameter Comparison

Engineering Selection Recommendations

The 9FG104EFILFT serves as a direct functional equivalent to the ICS9FG104DFILFT for Intel CPU Server, PCI Express (PCIe), and SATA clock generation applications. Selection between these parts should be based on the following criteria:

ICS9FG104DFILFT (Obsolete): Use only when existing inventory is available or when legacy system documentation specifically requires this exact part number. Availability is limited.

9FG104EFILFT (Active): Recommended for new designs, system repairs, and applications requiring current production support. This part maintains full electrical and mechanical compatibility while offering ROHS3 compliance and active manufacturing status. Tape & Reel packaging is suitable for both manual and automated assembly processes.

Both parts are classified as REACH Unaffected and carry EAR99 export classification, with identical HTSUS coding (8542.39.0001).

Frequently Asked Questions (FAQ)

Q: Can the 9FG104EFILFT directly replace the ICS9FG104DFILFT in existing designs?

A: Yes. Both parts share identical electrical specifications (400MHz output, HCSL signaling, 1:5 frequency ratio, 3.135V–3.465V supply, -40°C to 85°C operating range) and mechanical compatibility (28-SSOP package, 5.30mm width, surface mount). Pin-for-pin substitution is valid.

Q: What is the difference between the two part numbers?

A: The primary differences are product status (Obsolete vs. Active) and packaging format (standard vs. Tape & Reel). The 9FG104EFILFT also carries ROHS3 compliance certification. Electrical and functional performance are identical.

Q: Are there any supply voltage or temperature derating considerations?

A: No. Both parts operate within the identical supply voltage range (3.135V–3.465V) and temperature range (-40°C to 85°C). No derating or compensation is required when substituting between these parts.

Q: Does the Tape & Reel packaging of the 9FG104EFILFT affect compatibility?

A: No. Tape & Reel is a packaging and delivery format only. The component itself remains a 28-SSOP surface mount IC with identical electrical and mechanical specifications. Assembly compatibility is maintained.

Q: What is the significance of the MSL rating?

A: Both parts carry MSL 1 (Unlimited), indicating no moisture sensitivity restrictions. Standard handling and storage procedures apply without special moisture control requirements.

Q: Are both parts suitable for Intel CPU Server, PCIe, and SATA applications?

A: Yes. Both the ICS9FG104DFILFT and 9FG104EFILFT are specified for these applications with identical PLL-based clock synthesis architecture and output characteristics.