CDC337DWG4 Equivalent & Substitute Parts

Part Overview

The CDC337DWG4 is a Clock Fanout Buffer (Distribution) IC manufactured by Texas Instruments, designed for 1:8 clock distribution at frequencies up to 80 MHz. This component accepts TTL-level input signals and provides CMOS-level outputs across eight channels in a 20-SOIC surface mount package.

The CDC337DWG4 is discontinued at DiGi Electronics, necessitating identification of functionally equivalent alternatives for ongoing design support and procurement. The substitute part CDC337DW maintains identical electrical and mechanical specifications while offering active product status and improved availability.

Substiute Parts

CDC337DWG4

Texas InstrumentsIn Stock: 1013CDC337DWG4 Datasheet

Current PartRFQ

CDC337DW

Texas InstrumentsIn Stock: 1197CDC337DW Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

The CDC337DW qualifies as a direct substitute for the CDC337DWG4 based on the following critical parameters that determine functional equivalence:

• Electrical Specifications: Identical input/output signal levels (TTL to CMOS), frequency rating (80 MHz maximum), supply voltage range (4.75V ~ 5.25V), and operating temperature range (-40°C ~ 85°C)
• Functional Configuration: Same 1:8 fanout buffer architecture with single circuit configuration
• Package Compatibility: Identical 20-SOIC (0.295", 7.50mm Width) surface mount package
• Compliance & Certifications: Both parts maintain ROHS3 compliance, MSL Level 1 rating, and REACH unaffected status
• Base Product Number: Both parts share the CDC337 base product number, confirming design lineage

The substitution is valid for all applications where the CDC337DWG4 was originally specified, with no electrical or mechanical redesign required.

Parameter Comparison

Engineering Selection Recommendations

The CDC337DW is the recommended substitute for the discontinued CDC337DWG4. Both parts are manufactured by Texas Instruments and maintain identical electrical specifications, functional configuration, and package geometry. The CDC337DW offers the additional advantage of active product status, ensuring long-term availability and supply chain continuity.

Both parts satisfy ROHS3 compliance requirements and carry MSL Level 1 ratings, indicating compatibility with standard manufacturing processes and storage conditions. The transition from CDC337DWG4 to CDC337DW requires no circuit modifications, PCB layout changes, or firmware updates.

Frequently Asked Questions (FAQ)

Q: Can CDC337DW be used as a direct replacement for CDC337DWG4 in existing designs?

A: Yes. The CDC337DW is electrically and mechanically identical to the CDC337DWG4. No design changes are required for substitution.

Q: Are there any differences in signal integrity or timing performance between these parts?

A: No. Both parts share identical frequency ratings (80 MHz maximum), input/output signal levels (TTL to CMOS), and operating specifications.

Q: What is the difference between the CDC337DWG4 and CDC337DW packaging?

A: Both parts use the same 20-SOIC (0.295", 7.50mm Width) surface mount package. The CDC337DWG4 was supplied in standard packaging, while the CDC337DW is supplied in tube packaging. This difference does not affect electrical performance or PCB compatibility.

Q: Are both parts RoHS compliant?

A: Yes. Both the CDC337DWG4 and CDC337DW are ROHS3 compliant and carry MSL Level 1 ratings.

Q: Why is the CDC337DWG4 discontinued?

A: The CDC337DWG4 has been discontinued at DiGi Electronics. The CDC337DW remains in active production and is the recommended alternative for new designs and ongoing procurement.