CDC351IDWR Clock Fanout Buffer Equivalent & Substitute Parts

Part Overview

The CDC351IDWR 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 from 3V to 3.6V supply voltage across the -40°C to 85°C temperature range in a 24-SOIC surface mount package.

The CDC351IDWR is classified as obsolete. Identifying equivalent and substitute parts is necessary to maintain design continuity, ensure supply chain availability, and support ongoing production or maintenance requirements for systems utilizing this clock distribution architecture.

Substiute Parts

CDC351IDWR

Texas InstrumentsIn Stock: 1024CDC351IDWR Datasheet

Current PartRFQ

CDC351IDW

Texas InstrumentsIn Stock: 1035CDC351IDW Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution for the CDC351IDWR is determined by strict equivalence across the following critical parameters:

• Base Product Number: CDC351 (common platform)
• Ratio - Input:Output: 1:10 (clock distribution architecture)
• Input/Output Logic Levels: LVTTL input with LVTTL tri-state output (signal compatibility)
• Frequency - Max: 100 MHz (timing specification)
• Voltage - Supply: 3V ~ 3.6V (power supply compatibility)
• Operating Temperature: -40°C ~ 85°C (thermal operating range)
• Package / Case: 24-SOIC (0.295", 7.50mm Width) (physical and electrical footprint)
• Mounting Type: Surface Mount (assembly compatibility)

The CDC351IDW qualifies as a direct substitute based on identical electrical specifications, package footprint, and functional characteristics. The primary distinction is product status and packaging format.

Parameter Comparison

Engineering Selection Recommendations

The CDC351IDW is the direct substitute for the CDC351IDWR. Both components share identical electrical specifications, package footprint, and functional characteristics. The CDC351IDW maintains active product status with Texas Instruments, ensuring ongoing availability and supply chain support.

Both parts maintain ROHS3 compliance and REACH unaffected status, satisfying regulatory requirements for current manufacturing and deployment. The CDC351IDW is recommended for new designs and production continuity where the CDC351IDWR is no longer available.

Frequently Asked Questions (FAQ)

Q: Can the CDC351IDW be used as a direct replacement for the CDC351IDWR?

A: Yes. The CDC351IDW is electrically and mechanically equivalent to the CDC351IDWR. Both components feature identical 1:10 clock distribution architecture, LVTTL input/output logic levels, 100 MHz maximum frequency, 3V to 3.6V supply voltage range, -40°C to 85°C operating temperature, and 24-SOIC package footprint.

Q: What is the primary difference between these two parts?

A: The CDC351IDWR is classified as obsolete, while the CDC351IDW maintains active product status. The CDC351IDW is the current production equivalent available from Texas Instruments.

Q: Are there any compliance or certification differences?

A: No. Both the CDC351IDWR and CDC351IDW are ROHS3 compliant, REACH unaffected, and carry identical moisture sensitivity level (MSL 1 - Unlimited) ratings.

Q: Will the CDC351IDW function identically in existing circuit designs?

A: Yes. The CDC351IDW is pin-compatible and functionally identical to the CDC351IDWR. No circuit modifications are required for substitution.

Q: What packaging formats are available for the CDC351IDW?

A: The CDC351IDW is supplied in tube packaging, while the CDC351IDWR was supplied in alternative packaging. Both use the same 24-SOIC (0.295", 7.50mm Width) component package.