CDC351IDWG4 Equivalent & Substitute Parts

Part Overview

The CDC351IDWG4 is a Clock Fanout Buffer (Distribution) IC manufactured by Texas Instruments, designed for 1:10 clock distribution at frequencies up to 100 MHz. This component features LVTTL input and output with tri-state capability, operating across a 3V to 3.6V supply range in a 24-SOIC surface mount package.

The CDC351IDWG4 is discontinued at DiGi Electronics, necessitating identification of functionally equivalent alternatives for ongoing design support and production requirements. The substitute part CDC351IDW maintains identical electrical and mechanical specifications while offering active product status and improved availability.

Substiute Parts

CDC351IDWG4

Texas InstrumentsIn Stock: 677CDC351IDWG4 Datasheet

Current PartRFQ

CDC351IDW

Texas InstrumentsIn Stock: 1035CDC351IDW Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the CDC351IDWG4 is determined by strict equivalence across the following critical parameters:

• Fanout Ratio: 1:10 configuration for identical clock distribution capability
• Maximum Frequency: 100 MHz operational limit
• Logic Levels: LVTTL input and LVTTL tri-state output compatibility
• Supply Voltage Range: 3V to 3.6V operation
• Temperature Range: -40°C to 85°C operating window
• Package Specification: 24-SOIC (0.295", 7.50mm Width) surface mount form factor
• Compliance Standards: ROHS3 compliance and MSL Level 1 rating

The CDC351IDW qualifies as a direct substitute based on complete alignment with all specified electrical and mechanical parameters. The primary distinction is product status and packaging format, with CDC351IDW available in tube packaging and active production status.

Parameter Comparison

Engineering Selection Recommendations

The CDC351IDW is the direct equivalent substitute for the CDC351IDWG4. Both parts share identical electrical specifications, mechanical dimensions, and compliance certifications. Selection between these parts is determined by availability and packaging requirements rather than functional differences.

The CDC351IDW is recommended for new designs and ongoing production due to its active product status and current market availability. The CDC351IDWG4, while functionally equivalent, is discontinued and should be replaced in existing designs where component refresh cycles permit.

Both parts maintain ROHS3 compliance and MSL Level 1 rating, ensuring compatibility with standard manufacturing processes and long-term storage requirements without moisture sensitivity constraints.

Frequently Asked Questions (FAQ)

Q: Can CDC351IDW be used as a direct replacement for CDC351IDWG4?

A: Yes. Both parts are electrically and mechanically identical, with matching 1:10 fanout ratio, 100 MHz maximum frequency, LVTTL logic levels, 3V to 3.6V supply range, and 24-SOIC package specification. The primary difference is product status and packaging format.

Q: What is the significance of the packaging difference between CDC351IDWG4 and CDC351IDW?

A: CDC351IDWG4 is supplied in tape and reel format, while CDC351IDW is supplied in tube packaging. Both formats are compatible with standard surface mount assembly processes. Selection depends on production volume and assembly equipment compatibility.

Q: Are there any compliance or certification differences between these parts?

A: No. Both parts maintain identical ROHS3 compliance status and MSL Level 1 rating. They are functionally equivalent for regulatory and manufacturing purposes.

Q: Why is CDC351IDWG4 discontinued?

A: Product discontinuation is a manufacturer decision unrelated to technical performance or reliability. The CDC351IDW remains in active production with identical specifications.

Q: Can these parts be used interchangeably in PCB designs?

A: Yes. The identical 24-SOIC package dimensions and pin configuration enable direct PCB-level substitution without layout modifications.