Equivalent & Substitute Parts for 9DB833AFILFT

Part Overview

The 9DB833AFILFT is a PCI Express (PCIe) Fanout Buffer with Zero Delay capability manufactured by Renesas Electronics Corporation. This clock distribution IC operates at a maximum frequency of 166MHz with a 1:8 input-to-output ratio, featuring HCSL differential input and output signaling. The device is currently classified as obsolete, making identification of compatible substitute parts essential for ongoing system support and component procurement.

Substiute Parts

9DB833AFILFT

Renesas Electronics CorporationIn Stock: 9409DB833AFILFT Datasheet

Current PartRFQ

9DB833AGILFT

Renesas Electronics CorporationIn Stock: 12879DB833AGILFT Datasheet

MFR RecommendedRFQ

9DBL0841BKILFT

Renesas Electronics CorporationIn Stock: 17659DBL0841BKILFT Datasheet

MFR RecommendedRFQ

9DBL0851BKILFT

Renesas Electronics CorporationIn Stock: 18889DBL0851BKILFT Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the 9DB833AFILFT is determined by the following critical parameters:

Core Functional Requirements:

• PCI Express (PCIe) application compatibility
• HCSL differential input and output signaling
• 1:8 input-to-output ratio
• Supply voltage range: 3.135V ~ 3.465V
• Operating temperature range: -40°C ~ 85°C
• Surface mount technology

Mechanical Compatibility:

• 48-pin package configuration
• Pin-to-pin compatibility within the same package family

Compliance & Environmental:

• ROHS3 compliance
• REACH unaffected status

The substitute parts identified maintain these core parameters while offering variations in maximum frequency capability, package form factor, and product lifecycle status. Frequency capability above 166MHz does not disqualify a part from substitution, as the 9DB833AFILFT operates within lower frequency margins of the PCIe specification.

Parameter Comparison

Engineering Selection Recommendations

9DB833AGILFT is the primary substitute option. This part maintains identical electrical specifications (166MHz maximum frequency, 1:8 ratio, HCSL signaling, 3.135V–3.465V supply) and thermal operating range. The key distinction is active product status and improved moisture sensitivity level (MSL 1 versus MSL 3), providing superior long-term reliability and availability. Package form factor differs (48-TFSOP versus 48-BSSOP), requiring PCB layout verification for pin-to-pin compatibility.

9DBL0841BKILFT and 9DBL0851BKILFT are secondary alternatives offering enhanced frequency capability (200MHz maximum) within the same supply voltage and temperature specifications. Both parts employ 48-VFQFN package technology with exposed pad design. These options are suitable for applications requiring frequency headroom above 166MHz. Both remain classified as obsolete with MSL 3 rating. Package migration from SSOP to VFQFN requires full PCB redesign and thermal management evaluation due to different footprint geometry and thermal characteristics.

Selection should prioritize 9DB833AGILFT for direct replacement scenarios. Alternative parts should be evaluated only when frequency margin requirements or specific package constraints necessitate deviation from the primary substitute.

Frequently Asked Questions (FAQ)

Q: Can 9DB833AGILFT directly replace 9DB833AFILFT without PCB modification?

A: Electrical substitution is valid. However, package form factor differs (48-TFSOP versus 48-BSSOP). Pin-to-pin compatibility must be verified against your specific PCB layout. Consult the respective datasheets for pinout confirmation before implementation.

Q: Why are 9DBL0841BKILFT and 9DBL0851BKILFT listed as substitutes if they use different packages?

A: These parts satisfy the core functional requirements for PCIe clock distribution: HCSL differential signaling, 1:8 ratio, matching supply voltage, and operating temperature range. Package differences necessitate PCB redesign but do not disqualify functional substitution. Selection depends on design flexibility and frequency requirements.

Q: What is the significance of the MSL rating difference between 9DB833AFILFT (MSL 3) and 9DB833AGILFT (MSL 1)?

A: MSL 3 requires controlled moisture exposure for 168 hours maximum before reflow soldering. MSL 1 has unlimited shelf life without moisture sensitivity constraints. 9DB833AGILFT offers superior handling flexibility and reduced risk of moisture-induced defects during assembly.

Q: Are all substitute parts ROHS3 compliant?

A: Yes. All listed parts—9DB833AFILFT, 9DB833AGILFT, 9DBL0841BKILFT, and 9DBL0851BKILFT—are ROHS3 compliant and REACH unaffected, meeting current environmental and regulatory requirements.

Q: Can I use 9DBL0841BKILFT or 9DBL0851BKILFT in a design originally specified for 166MHz operation?

A: Yes. Both parts support 200MHz maximum frequency, which exceeds the 166MHz requirement. The higher frequency capability does not create incompatibility; the parts operate within the specified 3.135V–3.465V supply range and -40°C to 85°C temperature window. However, package migration requires full PCB redesign and thermal analysis.

Q: What is the difference between 9DBL0841BKILFT and 9DBL0851BKILFT?

A: Both parts share identical electrical specifications (200MHz, HCSL, 1:8 ratio, 48-VFQFN package, MSL 3). The primary distinction is the base product number (9DBL0841 versus 9DBL0851), indicating different internal design variants. Functional substitution between these two is valid; selection should be based on availability and supply chain considerations.