ICS9179BF-03LF Equivalent & Substitute Parts

Part Overview

The ICS9179BF-03LF is a Clock Fanout Buffer (Distribution) IC manufactured by Renesas Electronics Corporation, designed for 1:10 clock distribution at 133 MHz in a 28-SSOP package. This part is classified as Obsolete, making identification of functionally equivalent alternatives necessary for ongoing system support and new design implementations. Substitute parts must maintain compatibility across electrical specifications, package form factor, and operational parameters to ensure direct replacement capability.

Substiute Parts

ICS9179BF-03LF

Renesas Electronics CorporationIn Stock: 2364ICS9179BF-03LF Datasheet

Current PartRFQ

CDC319DB

Texas InstrumentsIn Stock: 1309CDC319DB Datasheet

MFR RecommendedRFQ

CDC319DBR

Texas InstrumentsIn Stock: 5656CDC319DBR Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the ICS9179BF-03LF are qualified based on the following critical parameters:

Electrical Compatibility:

• Input:Output Ratio: 1:10 (mandatory match)
• Supply Voltage Range: 3.135V ~ 3.465V (mandatory match)
• Operating Temperature Range: 0°C ~ 70°C (mandatory match)
• Package / Case: 28-SSOP (0.209", 5.30mm Width) (mandatory match)
• Mounting Type: Surface Mount (mandatory match)

Functional Compatibility:

• Type: Fanout Buffer (Distribution) (mandatory match)
• Number of Circuits: 1 (mandatory match)

The substitute parts CDC319DB and CDC319DBR from Texas Instruments meet all mandatory electrical and mechanical parameters. Both parts operate within the specified supply voltage range, support the required 1:10 distribution ratio, maintain the identical 28-SSOP package footprint, and function across the specified temperature range. The primary distinction between substitutes is packaging format (bulk versus Tape & Reel).

Parameter Comparison

Engineering Selection Recommendations

CDC319DB is suitable for applications requiring bulk component packaging. This part is Active status from Texas Instruments, ensuring long-term availability and supply chain stability. ROHS3 compliance supports environmental and regulatory requirements for new designs and manufacturing processes.

CDC319DBR is the preferred selection for high-volume production and automated assembly operations. The Tape & Reel packaging format optimizes pick-and-place machine compatibility and reduces component handling costs. This part maintains Active status and ROHS3 compliance, providing equivalent regulatory and environmental benefits to CDC319DB.

Both substitute parts operate at a maximum frequency of 100 MHz, which is lower than the original ICS9179BF-03LF specification of 133 MHz. System designs operating at or below 100 MHz clock frequencies will experience no functional degradation. Designs requiring operation above 100 MHz must retain the original Renesas part or identify alternative solutions with higher frequency ratings.

Frequently Asked Questions (FAQ)

Q: Can CDC319DB or CDC319DBR directly replace ICS9179BF-03LF in existing designs?

A: Both Texas Instruments parts are direct pin-compatible replacements with identical 28-SSOP package footprints and matching supply voltage specifications. Substitution is valid for applications operating at clock frequencies of 100 MHz or below. Applications requiring 133 MHz operation must use the original Renesas part or identify alternatives with equivalent frequency specifications.

Q: What is the difference between CDC319DB and CDC319DBR?

A: Both parts are electrically and functionally identical. The primary difference is packaging format: CDC319DB is supplied in bulk packaging, while CDC319DBR is supplied in Tape & Reel format. Selection depends on manufacturing process requirements and volume considerations.

Q: Are the substitute parts RoHS compliant?

A: Yes, both CDC319DB and CDC319DBR are ROHS3 compliant. The original ICS9179BF-03LF RoHS status was not specified in available documentation.

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

A: All three parts—ICS9179BF-03LF, CDC319DB, and CDC319DBR—have a Moisture Sensitivity Level (MSL) of 1 (Unlimited), indicating no moisture sensitivity restrictions during storage or handling.

Q: Are there frequency limitations when substituting?

A: Yes. The substitute parts (CDC319DB and CDC319DBR) have a maximum frequency rating of 100 MHz, compared to the original part's 133 MHz specification. Designs operating above 100 MHz cannot use these substitutes without performance verification and potential system redesign.

Q: What certifications and compliance standards apply?

A: All parts carry REACH Unaffected status and EAR99 export classification. Substitute parts additionally provide ROHS3 compliance. ECCN and HTSUS classifications are identical across all three parts.