9DB104BGLF Equivalent & Substitute Parts

Part Overview

The 9DB104BGLF is a PCI Express (PCIe) Clock Buffer/Driver IC manufactured by Renesas Electronics Corporation. This 28-TSSOP surface mount device functions as a 1-to-4 differential clock distribution buffer with a maximum frequency of 220MHz and operates at a supply voltage of 3.135V to 3.465V. The device is currently classified as obsolete, making identification of suitable substitute components essential for ongoing system support and new design implementations.

Substiute Parts

9DB104BGLF

Renesas Electronics CorporationIn Stock: 13459DB104BGLF Datasheet

Current PartRFQ

9DB403DGLF

Renesas Electronics CorporationIn Stock: 21849DB403DGLF Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the 9DB104BGLF is determined by the following critical parameters that must remain consistent or be enhanced:

Mandatory Compatibility Parameters:

• Package / Case: 28-TSSOP form factor (physical and electrical compatibility with existing PCB layouts)
• Mounting Type: Surface Mount (identical assembly process)
• Voltage - Supply: 3.135V ~ 3.465V (power supply compatibility)
• Number of Circuits: 1 (functional equivalence)
• Ratio - Input:Output: 1:4 (clock distribution capability)
• Differential - Input:Output: Yes/Yes (signal integrity requirements)
• Main Purpose: PCI Express (PCIe) (application domain)

Enhancement Parameters:

• Frequency - Max: Equal to or greater than 220MHz (backward compatible operation)
• Operating Temperature: 0°C ~ 70°C or wider range (environmental compatibility)

The 9DB403DGLF qualifies as a direct substitute by meeting all mandatory parameters while providing enhanced frequency capability (400MHz) and active product status.

Parameter Comparison

Engineering Selection Recommendations

The 9DB104BGLF is obsolete and no longer in active production. The 9DB403DGLF is the qualified substitute for this application.

Selection Basis:

The 9DB403DGLF maintains full electrical and mechanical compatibility with the 9DB104BGLF across all critical parameters: identical package, voltage supply range, circuit count, input/output ratio, and differential signaling configuration. The substitute operates at an enhanced maximum frequency of 400MHz, which exceeds the original 220MHz specification and provides operational margin for PCIe clock distribution applications.

The 9DB403DGLF carries active product status from Renesas Electronics Corporation and holds ROHS3 compliance certification, ensuring long-term availability and regulatory alignment for new designs and legacy system support.

Frequently Asked Questions (FAQ)

Q: Can the 9DB403DGLF directly replace the 9DB104BGLF on existing PCBs?

A: Yes. Both devices use the identical 28-TSSOP package with matching pinout, voltage requirements, and differential signal characteristics. No PCB layout modifications are required.

Q: What is the primary advantage of the 9DB403DGLF over the 9DB104BGLF?

A: The 9DB403DGLF operates at a maximum frequency of 400MHz compared to the 9DB104BGLF's 220MHz, providing enhanced performance headroom. Additionally, the 9DB403DGLF is in active production status, ensuring continued availability and support.

Q: Are there any electrical differences between these devices that affect circuit design?

A: Both devices operate within the same supply voltage range (3.135V ~ 3.465V), maintain identical 1:4 input-to-output ratios, and support differential signaling on both input and output. The higher frequency capability of the 9DB403DGLF does not introduce incompatibilities with existing designs.

Q: What is the moisture sensitivity level for both parts?

A: Both the 9DB104BGLF and 9DB403DGLF carry MSL Level 1 (Unlimited), indicating no moisture sensitivity restrictions for storage or handling.

Q: Is the 9DB403DGLF suitable for new PCIe clock distribution designs?

A: Yes. The 9DB403DGLF is the active product from Renesas Electronics Corporation for this functional category and is appropriate for new designs requiring PCI Express clock buffering and distribution in the 28-TSSOP package format.