9FGL0651CKILF PCIe Clock Generator IC Equivalent & Substitute Parts

Part Overview

The 9FGL0651CKILF is a PCI Express (PCIe) Clock Generator IC manufactured by Renesas Electronics Corporation. This device functions as a single-output clock generator with a 1:6 input-to-output ratio, designed for PCIe applications requiring clock signal generation and distribution. The part operates with a maximum input frequency of 25MHz and delivers differential clock outputs suitable for PCIe timing requirements.

The 9FGL0651CKILF carries an Obsolete product status, indicating that Renesas Electronics Corporation has discontinued active production and support. This obsolescence necessitates identification of functionally equivalent substitute components to maintain design continuity and ensure long-term supply chain reliability for applications currently utilizing this device.

Substiute Parts

9FGL0651CKILF

Renesas Electronics CorporationIn Stock: 14429FGL0651CKILF Datasheet

Current PartRFQ

9FGL0651DKILF

Renesas Electronics CorporationIn Stock: 9529FGL0651DKILF Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the 9FGL0651CKILF is determined by strict alignment of the following critical parameters:

Mechanical Compatibility:

• Package type: 40-VFQFN Exposed Pad (5x5)
• Mounting type: Surface Mount
• Physical footprint equivalence

Electrical Compatibility:

• Supply voltage range: 3.135V ~ 3.465V
• Operating temperature range: -40°C ~ 85°C (TA)
• Number of circuits: 1
• Input-to-output ratio: 1:6
• Differential output capability: Yes
• Primary application: PCI Express (PCIe)

Regulatory & Compliance:

• RoHS3 Compliance
• Moisture Sensitivity Level: 3 (168 Hours)
• REACH Status: REACH Unaffected

The 9FGL0651DKILF qualifies as a substitute part because it maintains identical mechanical packaging, electrical supply specifications, operating temperature range, circuit configuration, and regulatory compliance status. The primary technical difference is an increased maximum frequency capability (100MHz versus 25MHz), which represents an enhancement rather than a limitation for applications requiring the 9FGL0651CKILF.

Parameter Comparison

Engineering Selection Recommendations

For Direct Replacement Applications:

The 9FGL0651DKILF serves as the primary substitute for the obsolete 9FGL0651CKILF. Both devices share identical mechanical packaging (40-VFQFN), electrical supply specifications (3.135V ~ 3.465V), operating temperature range (-40°C ~ 85°C), and regulatory compliance certifications (ROHS3, REACH Unaffected). The 9FGL0651DKILF maintains Active product status with Renesas Electronics Corporation, ensuring continued availability and manufacturing support.

Key Selection Factors:

The 9FGL0651DKILF provides enhanced frequency capability (100MHz maximum versus 25MHz), which does not restrict its use in applications designed for the 9FGL0651CKILF. The substitute part accepts both Clock and Crystal input types, compared to the main part's Clock input specification. Output options include HCSL and LVCMOS formats, providing flexibility for various PCIe timing architectures.

Compliance Verification:

Both parts maintain ROHS3 compliance and REACH Unaffected status, satisfying regulatory requirements for electronic component procurement. Moisture Sensitivity Level 3 (168 Hours) is identical across both devices, requiring equivalent handling and storage protocols during manufacturing and assembly operations.

Frequently Asked Questions (FAQ)

Q: Can the 9FGL0651DKILF directly replace the 9FGL0651CKILF in existing PCB designs?

A: Yes. The 9FGL0651DKILF maintains identical package geometry (40-VFQFN Exposed Pad, 5x5mm), pin configuration, supply voltage range (3.135V ~ 3.465V), and operating temperature specifications (-40°C ~ 85°C). PCB footprints and schematic connections require no modification.

Q: What is the significance of the increased maximum frequency (100MHz versus 25MHz)?

A: The 9FGL0651DKILF's higher frequency rating represents a performance enhancement. Applications utilizing the 9FGL0651CKILF at 25MHz or lower operate within the substitute part's specifications without functional impact. The increased frequency capability does not introduce incompatibility.

Q: Are there differences in input signal requirements between these parts?

A: The 9FGL0651CKILF accepts Clock input signals. The 9FGL0651DKILF accepts both Clock and Crystal input types. This expanded input flexibility in the substitute part does not restrict its use in Clock-only applications.

Q: Do the output signal formats differ between these devices?

A: The 9FGL0651CKILF provides Clock output. The 9FGL0651DKILF provides HCSL and LVCMOS output formats. Both maintain the required differential output capability (No/Yes configuration) for PCIe applications. Output format compatibility must be verified against receiving circuit requirements.

Q: What is the impact of the product status change from Obsolete to Active?

A: The Active status of the 9FGL0651DKILF ensures continued manufacturing, quality assurance, and technical support from Renesas Electronics Corporation. This eliminates supply chain discontinuity risks associated with the obsolete 9FGL0651CKILF.

Q: Are moisture sensitivity and handling requirements identical?

A: Yes. Both parts carry Moisture Sensitivity Level 3 (168 Hours). Identical storage, handling, and reflow procedures apply to both devices during manufacturing and assembly operations.

Q: Does the substitute part maintain regulatory compliance for restricted substance directives?

A: Yes. The 9FGL0651DKILF is ROHS3 Compliant and REACH Unaffected, matching the compliance status of the 9FGL0651CKILF. No additional regulatory documentation or material declarations are required for substitution.