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9DB401BGLFT Equivalent & Substitute Parts
Part Overview
The 9DB401BGLFT is a PCI Express (PCIe) Fanout Buffer IC manufactured by Renesas Electronics Corporation, designed for zero-delay clock distribution in high-speed digital applications. This device features a 1:4 input-to-output ratio with differential HCSL input and dual output formats (HCSL and LVDS), operating at a maximum frequency of 333.33MHz. The part is currently classified as obsolete, making identification of compatible substitute components essential for ongoing system support and new design implementations.
Substiute Parts
Key Parameters
| Parameter | Value |
|---|---|
| Manufacturer | Renesas Electronics Corporation |
| Category | Clock/Timing |
| Package Type | 28-TSSOP (0.173", 4.40mm Width) |
| Main Purpose | PCI Express (PCIe) |
| Input Signal Type | HCSL |
| Output Signal Types | HCSL, LVDS |
| Number of Circuits | 1 |
| Input:Output Ratio | 1:4 |
| Differential Input/Output | Yes/Yes |
| Maximum Frequency | 333.33MHz |
| Supply Voltage Range | 3.135V ~ 3.465V |
| Operating Temperature Range | 0°C ~ 70°C |
| Mounting Type | Surface Mount |
| PLL Feature | Yes |
| Product Status | Obsolete |
Substitute Part Grouping Explanation
Substitution eligibility for the 9DB401BGLFT is determined by strict adherence to the following electrical and mechanical parameters:
Critical Matching Parameters:
- Package type: 28-TSSOP form factor (identical physical dimensions and pin configuration)
- Input signal specification: HCSL differential input
- Output signal capability: HCSL and LVDS dual output support
- Circuit configuration: Single circuit with 1:4 input-to-output ratio
- Differential signaling: Both input and output must support differential operation
- Supply voltage range: 3.135V ~ 3.465V compatibility
- Operating temperature range: 0°C ~ 70°C minimum coverage
- Mounting technology: Surface mount only
The 9DB403DGLFT qualifies as a direct substitute based on matching all critical parameters while offering enhanced maximum frequency capability (400MHz versus 333.33MHz), representing a performance upgrade within the same functional architecture.
Parameter Comparison
| Parameter | 9DB401BGLFT | 9DB403DGLFT |
|---|---|---|
| Manufacturer | Renesas Electronics Corporation | Renesas Electronics Corporation |
| Category | Clock/Timing | Clock/Timing |
| Package / Case | 28-TSSOP (0.173", 4.40mm Width) | 28-TSSOP (0.173", 4.40mm Width) |
| Main Purpose | PCI Express (PCIe) | PCI Express (PCIe) |
| Input Signal Type | HCSL | HCSL |
| Output Signal Types | HCSL, LVDS | HCSL, LVDS |
| Number of Circuits | 1 | 1 |
| Input:Output Ratio | 1:4 | 1:4 |
| Differential Input/Output | Yes/Yes | Yes/Yes |
| Maximum Frequency | 333.33MHz | 400MHz |
| Supply Voltage Range | 3.135V ~ 3.465V | 3.135V ~ 3.465V |
| Operating Temperature Range | 0°C ~ 70°C | 0°C ~ 70°C |
| Mounting Type | Surface Mount | Surface Mount |
| PLL Feature | Yes | Yes |
| Product Status | Obsolete | Active |
Engineering Selection Recommendations
The 9DB403DGLFT is the qualified substitute for the obsolete 9DB401BGLFT. Selection of the 9DB403DGLFT is supported by the following factors:
Product Status: The 9DB403DGLFT maintains active product status with Renesas Electronics Corporation, ensuring continued availability and manufacturing support. The 9DB401BGLFT obsolescence status necessitates transition to an actively produced alternative.
Compliance and Certifications: Both parts share identical REACH compliance status (REACH Unaffected) and ECCN classification (EAR99). The 9DB403DGLFT additionally carries RoHS3 compliance certification, meeting current regulatory requirements for electronic components.
Electrical Compatibility: The 9DB403DGLFT maintains full electrical compatibility across all critical parameters: identical supply voltage range, operating temperature specifications, input/output signal types, and circuit configuration. The increased maximum frequency rating (400MHz) provides operational headroom for existing 333.33MHz applications.
Physical Compatibility: Identical 28-TSSOP package specifications ensure direct pin-for-pin compatibility without PCB layout modifications.
Frequently Asked Questions (FAQ)
Q: Can the 9DB403DGLFT directly replace the 9DB401BGLFT in existing designs?
A: Yes. The 9DB403DGLFT is pin-for-pin compatible with identical package dimensions, supply voltage requirements, and signal specifications. No PCB modifications are required.
Q: What is the primary difference between these two parts?
A: The 9DB403DGLFT operates at a maximum frequency of 400MHz compared to the 9DB401BGLFT's 333.33MHz specification. Both parts maintain identical electrical characteristics for supply voltage, operating temperature, and signal types.
Q: Why is the 9DB401BGLFT classified as obsolete?
A: Product obsolescence is determined by the manufacturer. The 9DB403DGLFT represents the current active alternative within the same product family.
Q: Are there any compliance differences between the two parts?
A: Both parts maintain REACH Unaffected status and EAR99 ECCN classification. The 9DB403DGLFT additionally carries RoHS3 compliance certification.
Q: What packaging options are available for the 9DB403DGLFT?
A: The 9DB403DGLFT is supplied in Cut Tape (CT) and Digi-Reel packaging formats, both in the 28-TSSOP package configuration.
Q: Is the PLL feature present in both parts?
A: Yes. Both the 9DB401BGLFT and 9DB403DGLFT include integrated PLL functionality for zero-delay buffer operation.
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