CD74HC237PWE4 Equivalent & Substitute Parts

Part Overview

The CD74HC237PWE4 is a decoder/demultiplexer logic integrated circuit manufactured by Texas Instruments, featuring a 1 x 3:8 configuration in a 16-TSSOP surface mount package. This component is classified as obsolete, which necessitates identification of equivalent and substitute parts for ongoing design support and procurement continuity. The device operates across a 2V to 6V supply range with symmetric output current characteristics, making it suitable for digital logic applications requiring address decoding or signal demultiplexing functions.

Substiute Parts

CD74HC237PWE4

Texas InstrumentsIn Stock: 908CD74HC237PWE4 Datasheet

Current PartRFQ

CD74HC237PWR

Texas InstrumentsIn Stock: 1916CD74HC237PWR Datasheet

MFR RecommendedRFQ

CD74HC137PW

Texas InstrumentsIn Stock: 702CD74HC137PW Datasheet

Parametric EquivalentRFQ

MC74HC238ADTG

onsemiIn Stock: 7619MC74HC238ADTG Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the CD74HC237PWE4 is determined by strict equivalence across the following critical parameters:

• Circuit Configuration: 1 x 3:8 decoder/demultiplexer topology
• Voltage Supply Range: 2V ~ 6V single supply operation
• Output Current Characteristics: 5.2mA high and low output current
• Operating Temperature Range: -55°C ~ 125°C
• Package Type: 16-TSSOP surface mount
• Compliance Standards: ROHS3 Compliant, REACH Unaffected

Substitute parts are grouped into two categories based on product status and availability:

MFR Recommended Substitute: CD74HC237PWR (Texas Instruments, Active status)

Parametric Equivalents: CD74HC137PW (Texas Instruments, Last Time Buy status) and MC74HC238ADTG (onsemi, Obsolete status)

All listed substitutes maintain identical electrical specifications and mechanical compatibility with the original part.

Parameter Comparison

Engineering Selection Recommendations

Primary Selection: CD74HC237PWR is the recommended substitute, as it maintains active product status with Texas Instruments, ensuring long-term availability and supply chain stability. This part is functionally and mechanically identical to the CD74HC237PWE4 and carries equivalent compliance certifications.

Secondary Selection: CD74HC137PW is a parametric equivalent available from Texas Instruments under Last Time Buy status. This part satisfies all electrical and mechanical requirements but represents a transitional availability phase.

Alternative Selection: MC74HC238ADTG from onsemi provides parametric equivalence with identical electrical specifications and 16-TSSOP packaging. However, this part carries obsolete status, similar to the original CD74HC237PWE4, and should be considered only when primary and secondary options are unavailable.

All substitute parts comply with ROHS3 and REACH requirements, maintaining regulatory alignment with the original component.

Frequently Asked Questions (FAQ)

Q: Can CD74HC237PWR be used as a direct replacement for CD74HC237PWE4?

A: Yes. CD74HC237PWR is electrically and mechanically identical to CD74HC237PWE4. Both parts share the same 1 x 3:8 decoder/demultiplexer configuration, 16-TSSOP package, voltage supply range (2V ~ 6V), output current specifications (5.2mA), and operating temperature range (-55°C ~ 125°C). The primary difference is product status: CD74HC237PWR is active, while CD74HC237PWE4 is obsolete.

Q: What is the difference between CD74HC237PWR and CD74HC137PW?

A: Both parts are parametrically equivalent with identical electrical and mechanical specifications. The distinction lies in product status and packaging format. CD74HC237PWR is active and available in Cut Tape and Digi-Reel formats, while CD74HC137PW is Last Time Buy status and supplied in Tube packaging. Selection depends on procurement requirements and supply chain strategy.

Q: Is MC74HC238ADTG compatible with designs using CD74HC237PWE4?

A: Yes. MC74HC238ADTG meets all electrical and mechanical compatibility requirements, including circuit configuration, voltage supply range, output current, operating temperature, and 16-TSSOP packaging. However, this onsemi part carries obsolete status and should be selected only when Texas Instruments alternatives are unavailable.

Q: Are there packaging differences between these substitute parts?

A: All substitute parts use the 16-TSSOP surface mount package with identical physical dimensions (0.173" width, 4.40mm). Packaging format differences (Cut Tape, Digi-Reel, Tube) relate to supply and handling methods, not component form factor or PCB compatibility.

Q: Do all substitute parts meet the same compliance standards?

A: Yes. All listed substitutes are ROHS3 Compliant and REACH Unaffected, matching the regulatory status of the original CD74HC237PWE4. Moisture Sensitivity Level is 1 (Unlimited) for all parts, indicating no special handling requirements.