9DB104BFLF Equivalent & Substitute Parts

Part Overview

The 9DB104BFLF is a PCI Express (PCIe) Clock Buffer/Driver IC manufactured by Renesas Electronics Corporation, designed to provide differential clock distribution for high-speed PCIe applications. This 28-SSOP surface mount device operates at frequencies up to 220MHz with a 1:4 input-to-output ratio and differential signaling on both input and output.

The 9DB104BFLF is classified as an obsolete product. For new designs or ongoing production requiring equivalent functionality, substitute parts must maintain compatibility across critical electrical parameters including supply voltage, differential signaling characteristics, frequency capability, and operating temperature range.

Substiute Parts

9DB104BFLF

Renesas Electronics CorporationIn Stock: 14789DB104BFLF Datasheet

Current PartRFQ

9ZXL0451EKILF

Renesas Electronics CorporationIn Stock: 13779ZXL0451EKILF Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the 9DB104BFLF is determined by the following critical parameters:

• Supply Voltage Compatibility: Substitute parts must operate within the 3.135V ~ 3.465V range to ensure direct replacement without circuit redesign.
• Differential Signaling: Both input and output must support differential signaling to maintain PCIe clock distribution integrity.
• Frequency Capability: Substitute parts must support operation at frequencies up to 220MHz or higher.
• PLL Functionality: The presence of PLL (Phase-Locked Loop) with bypass capability ensures frequency stability and flexibility in clock distribution applications.
• Surface Mount Packaging: Substitute parts must use surface mount technology compatible with standard PCB assembly processes.
• Compliance Standards: RoHS3 compliance and REACH unaffected status are mandatory for regulatory alignment.

The 9ZXL0451EKILF qualifies as a substitute based on matching supply voltage range, differential output capability, PLL functionality, surface mount packaging, and identical compliance certifications.

Parameter Comparison

Engineering Selection Recommendations

The 9ZXL0451EKILF is the manufacturer-recommended substitute for the obsolete 9DB104BFLF. Both parts are manufactured by Renesas Electronics Corporation and maintain identical supply voltage specifications (3.135V ~ 3.465V), ensuring direct electrical compatibility without circuit modification.

The substitute part offers an extended operating temperature range (-40°C ~ 85°C versus 0°C ~ 70°C), providing greater thermal flexibility for applications requiring wider environmental tolerance. Both parts maintain ROHS3 compliance and REACH unaffected status, satisfying regulatory requirements for new product designs and manufacturing continuity.

The 9ZXL0451EKILF features a fanout buffer architecture with zero delay capability and PLL with bypass functionality, delivering enhanced clock distribution performance compared to the legacy 9DB104BFLF buffer design. The higher pin count (32-VFQFN versus 28-SSOP) accommodates increased output channels and improved signal integrity for modern PCIe applications.

Frequently Asked Questions (FAQ)

Q: Can the 9ZXL0451EKILF directly replace the 9DB104BFLF without PCB modifications?

A: The 9ZXL0451EKILF requires PCB layout changes due to different package types (32-VFQFN Exposed Pad versus 28-SSOP). Pin assignments and footprints differ, necessitating schematic and layout redesign. However, electrical functionality and supply voltage compatibility enable functional substitution with proper circuit adaptation.

Q: What is the significance of the extended operating temperature range in the substitute part?

A: The 9ZXL0451EKILF operates from -40°C to 85°C, compared to the 9DB104BFLF range of 0°C to 70°C. This extended range accommodates industrial and automotive applications requiring broader thermal performance without performance degradation.

Q: How do the input-to-output ratios differ between these parts?

A: The 9DB104BFLF provides a 1:4 ratio (one differential input to four differential outputs). The 9ZXL0451EKILF provides a 4:12 ratio (four HCSL inputs to twelve HCSL outputs), offering greater output channel capacity for complex clock distribution networks.

Q: Are both parts RoHS3 compliant?

A: Yes, both the 9DB104BFLF and 9ZXL0451EKILF are ROHS3 compliant and REACH unaffected, meeting current regulatory requirements for electronic component manufacturing and distribution.

Q: What is the difference in Moisture Sensitivity Level (MSL)?

A: The 9DB104BFLF has MSL 1 (unlimited shelf life without moisture control), while the 9ZXL0451EKILF has MSL 3 (168-hour maximum exposure at specified humidity). The substitute part requires standard moisture control during storage and handling per IPC-A-610 guidelines.