CDC208DWRG4 Equivalent & Substitute Parts

Part Overview

The CDC208DWRG4 is a Clock Fanout Buffer (Distribution) IC manufactured by Texas Instruments, designed for 1:4 clock distribution applications with a maximum frequency of 60 MHz. This component features TTL input and CMOS output, operating across a 4.5V to 5.5V supply voltage range in a 20-SOIC surface mount package.

The CDC208DWRG4 is currently discontinued at DiGi Electronics. For ongoing production requirements, equivalent substitute parts must maintain identical electrical specifications and mechanical compatibility to ensure direct replacement without circuit redesign.

Substiute Parts

CDC208DWRG4

Texas InstrumentsIn Stock: 1127CDC208DWRG4 Datasheet

Current PartRFQ

CDC208DWR

Texas InstrumentsIn Stock: 1989CDC208DWR Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the CDC208DWRG4 is determined by strict equivalence across the following critical parameters:

• Base Product Number: CDC208 (ensures identical die and functional design)
• Ratio - Input:Output: 1:4 (determines clock distribution capability)
• Input/Output Types: TTL input, CMOS output (defines signal compatibility)
• Frequency - Max: 60 MHz (establishes maximum operating speed)
• Voltage - Supply: 4.5V ~ 5.5V (ensures power supply compatibility)
• Operating Temperature: -40°C ~ 85°C (defines thermal operating range)
• Package / Case: 20-SOIC (0.295", 7.50mm Width) (ensures PCB footprint compatibility)
• Mounting Type: Surface Mount (confirms assembly process compatibility)

The CDC208DWR meets all substitution criteria and is classified as a manufacturer-recommended equivalent.

Parameter Comparison

Engineering Selection Recommendations

The CDC208DWR is the manufacturer-recommended substitute for the discontinued CDC208DWRG4. Both parts share identical electrical specifications, mechanical dimensions, and compliance certifications. The CDC208DWR maintains active product status with higher inventory availability, ensuring supply chain continuity for new production and replacement applications.

Both parts comply with ROHS3 standards and carry MSL Level 1 (Unlimited) moisture sensitivity ratings, indicating equivalent reliability and handling requirements. The transition from CDC208DWRG4 to CDC208DWR requires no circuit modifications, PCB layout changes, or firmware updates.

Frequently Asked Questions (FAQ)

Q: Can CDC208DWR directly replace CDC208DWRG4 without PCB modifications?

A: Yes. Both parts are identical in electrical performance, pin configuration, and 20-SOIC package dimensions. Direct substitution is possible without PCB redesign.

Q: Are there differences in RoHS or environmental compliance between these parts?

A: No. Both CDC208DWRG4 and CDC208DWR are ROHS3 compliant with identical REACH and ECCN classifications.

Q: What is the significance of the product status difference?

A: CDC208DWRG4 is discontinued at DiGi Electronics, while CDC208DWR maintains active status. For new designs and ongoing production, CDC208DWR is the recommended selection to ensure long-term supply availability.

Q: Are there any thermal or frequency limitations when substituting?

A: No. Both parts operate identically across the -40°C to 85°C temperature range and support 60 MHz maximum frequency specifications.

Q: Does the MSL Level 1 rating apply equally to both parts?

A: Yes. Both parts carry MSL Level 1 (Unlimited) ratings, indicating identical moisture sensitivity and storage requirements.