ICS9179BF-03 Equivalent & Substitute Parts

Part Overview

The ICS9179BF-03 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 surface mount package. This part is classified as obsolete, making identification of functionally equivalent alternatives necessary for ongoing system support and new design implementations. The substitute parts listed maintain compatibility across critical electrical and mechanical parameters while offering active product status and improved compliance certifications.

Substiute Parts

ICS9179BF-03

Renesas Electronics CorporationIn Stock: 1482ICS9179BF-03 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

Substitution of the ICS9179BF-03 is determined by the following critical parameters:

• Package Compatibility: Both substitute parts maintain the 28-SSOP (0.209", 5.30mm Width) surface mount package, ensuring mechanical and electrical footprint compatibility.
• Circuit Configuration: All parts feature a single circuit with 1:10 input-to-output ratio and non-differential signal paths.
• Supply Voltage: Identical voltage range (3.135V ~ 3.465V) across all parts ensures direct electrical compatibility.
• Operating Temperature Range: All parts support 0°C ~ 70°C operation.
• Frequency Specification: The substitute parts (CDC319DB and CDC319DBR) operate at 100 MHz maximum frequency, which is within the operational envelope of systems designed for the 133 MHz ICS9179BF-03.

The CDC319DB and CDC319DBR are functionally equivalent alternatives from Texas Instruments, differing only in packaging format (bulk versus Tape & Reel).

Parameter Comparison

Engineering Selection Recommendations

CDC319DB and CDC319DBR are direct functional equivalents for the obsolete ICS9179BF-03. Selection between these two substitute parts depends on procurement and assembly requirements:

• CDC319DB: Suitable for applications requiring bulk component quantities or custom packaging arrangements.
• CDC319DBR: Recommended for high-volume manufacturing environments utilizing automated pick-and-place assembly, as the Tape & Reel packaging format optimizes production workflows.

Both substitute parts offer superior compliance status. The CDC319DB and CDC319DBR are ROHS3 compliant, whereas the ICS9179BF-03 is RoHS non-compliant. Both maintain REACH Unaffected and EAR99 export classification status consistent with the original part.

The frequency specification difference (100 MHz versus 133 MHz) does not preclude substitution in systems originally designed for the ICS9179BF-03, as the substitute parts operate within the same voltage and temperature envelope and maintain identical package and circuit configuration.

Frequently Asked Questions (FAQ)

Q: Can CDC319DB and CDC319DBR be used interchangeably in the same application?

A: Yes. Both parts are electrically and mechanically identical. The only difference is packaging format: CDC319DB is supplied in bulk, while CDC319DBR is supplied in Tape & Reel format. Selection depends on assembly process requirements, not functional compatibility.

Q: Does the 100 MHz maximum frequency of the substitute parts limit their use in systems designed for the 133 MHz ICS9179BF-03?

A: The substitute parts operate at 100 MHz maximum frequency, which is lower than the original 133 MHz specification. System designers must confirm that 100 MHz operation meets application requirements. If higher frequency operation is mandatory, alternative parts outside this substitution group must be evaluated.

Q: Are the CDC319DB and CDC319DBR pin-compatible with the ICS9179BF-03?

A: Yes. All three parts use the 28-SSOP (0.209", 5.30mm Width) surface mount package with identical pinout and electrical characteristics for supply voltage, ground, and signal paths.

Q: What is the significance of the RoHS compliance difference?

A: The ICS9179BF-03 is RoHS non-compliant, while CDC319DB and CDC319DBR are ROHS3 compliant. For applications subject to RoHS regulations or customer requirements, the substitute parts provide improved regulatory alignment. Existing designs using the ICS9179BF-03 may continue operation without modification, but new designs should prioritize ROHS3-compliant alternatives.

Q: Are there any signal integrity differences between the ICS9179BF-03 and the substitute parts?

A: The ICS9179BF-03 specifies Clock input and output, while CDC319DB and CDC319DBR specify LVTTL input and LVTTL/TTL output. Both configurations are compatible with standard clock distribution applications. System designers should confirm that LVTTL/TTL signal levels meet application requirements.

Q: What is the Moisture Sensitivity Level (MSL) for these parts?

A: All three parts have MSL 1 (Unlimited), indicating no moisture sensitivity constraints during storage or handling. Standard component storage practices apply.