CD74HC237PW Equivalent & Substitute Parts

Part Overview

The CD74HC237PW is a 1 x 3:8 decoder/demultiplexer logic integrated circuit manufactured by Texas Instruments in the 74HC series. This device decodes a 3-bit binary input into one of eight active outputs, functioning as both a decoder and demultiplexer in digital logic applications. The part is classified as obsolete, necessitating identification of equivalent and substitute components for ongoing design support and procurement continuity.

Substiute Parts

CD74HC237PW

Texas InstrumentsIn Stock: 798CD74HC237PW 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 of the CD74HC237PW is determined by strict equivalence across the following critical parameters:

Functional Equivalence: All substitute parts maintain identical 1 x 3:8 decoder/demultiplexer circuit topology with one independent circuit.

Electrical Equivalence: Output current specifications (5.2mA high and low), supply voltage range (2V to 6V), and operating temperature range (-55°C to 125°C) are identical across all qualified substitutes.

Package Equivalence: All substitutes use the 16-TSSOP surface mount package with identical physical dimensions (0.173" width, 4.40mm).

Compliance Equivalence: All substitutes maintain ROHS3 compliance, MSL 1 rating, and REACH unaffected status.

Substitutes are grouped by manufacturer and product status to facilitate procurement decisions based on availability and lifecycle stage.

Parameter Comparison

Engineering Selection Recommendations

Primary Substitute (Recommended for New Designs): CD74HC237PWR is the preferred substitute. This part is manufactured by Texas Instruments with active product status, ensuring long-term availability and supply chain stability. It maintains complete electrical and mechanical equivalence to the CD74HC237PW while offering superior lifecycle support.

Secondary Substitute (Equivalent Functionality): CD74HC137PW provides full parametric equivalence and is available in tube packaging matching the original part format. However, this part carries Last Time Buy status, indicating limited future availability.

Alternative Substitute (Cross-Manufacturer): MC74HC238ADTG, manufactured by onsemi, delivers identical electrical performance and package specifications. This part offers the highest current inventory level (7556 units) but carries obsolete status. Selection of this part should account for manufacturer transition planning.

Compliance Status: All substitute parts maintain ROHS3 compliance, MSL 1 rating, and REACH unaffected designation, ensuring regulatory equivalence for applications subject to environmental and safety standards.

Frequently Asked Questions (FAQ)

Q: Can CD74HC237PWR be used as a direct replacement for CD74HC237PW?

A: Yes. CD74HC237PWR is a direct functional and electrical equivalent. The primary difference is packaging format (Cut Tape/Digi-Reel versus Tube) and active product status. Pin configuration, electrical specifications, and performance characteristics are identical.

Q: What is the difference between CD74HC237PW and CD74HC137PW?

A: Both parts are 1 x 3:8 decoder/demultiplexers with identical electrical specifications and 16-TSSOP packaging. The primary distinction is product lifecycle status: CD74HC237PW is obsolete, while CD74HC137PW is Last Time Buy. Both are manufactured by Texas Instruments.

Q: Is MC74HC238ADTG compatible with CD74HC237PW?

A: Yes. MC74HC238ADTG meets all electrical and mechanical substitution criteria: identical 1 x 3:8 circuit configuration, 5.2mA output current, 2V to 6V supply range, -55°C to 125°C operating temperature, and 16-TSSOP package. The manufacturer difference (onsemi versus Texas Instruments) does not affect functional compatibility.

Q: Does packaging format affect substitutability?

A: Packaging format (Tube, Cut Tape, Digi-Reel) affects procurement and handling but does not affect electrical or functional compatibility. All substitute parts use identical 16-TSSOP surface mount packages with the same physical dimensions and pin assignments.

Q: Are all substitutes RoHS compliant?

A: Yes. All listed substitute parts maintain ROHS3 compliance and MSL 1 rating, ensuring compatibility with applications requiring environmental and regulatory compliance.

Q: Which substitute should be selected for long-term production?

A: CD74HC237PWR is recommended for long-term production due to active product status from Texas Instruments, ensuring sustained availability and supply chain reliability.