CD74HC139M Equivalent & Substitute Parts

Part Overview

The CD74HC139M is a Decoder/Demultiplexer logic IC manufactured by Texas Instruments, featuring a 1 x 2:4 circuit configuration in a 16-SOIC surface mount package. This component is classified as Last Time Buy, indicating limited availability from the original manufacturer. Identifying equivalent and substitute parts is essential for design continuity, supply chain flexibility, and long-term project sustainability.

Substiute Parts

CD74HC139M

Texas InstrumentsIn Stock: 2168CD74HC139M Datasheet

Current PartRFQ

CD74HC139M96

Texas InstrumentsIn Stock: 2220CD74HC139M96 Datasheet

MFR RecommendedRFQ

MC74HC139ADR2G

onsemiIn Stock: 7426MC74HC139ADR2G Datasheet

DirectRFQ

74HC139D,653

Nexperia USA Inc.In Stock: 3890174HC139D,653 Datasheet

MFR RecommendedRFQ

MC74HC139ADG

onsemiIn Stock: 2115MC74HC139ADG Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the CD74HC139M is determined by strict equivalence across the following critical parameters: base product number (74HC139 series), decoder/demultiplexer function, 1 x 2:4 circuit configuration, 2 independent circuits, 16-SOIC package footprint, surface mount mounting type, 2V–6V supply voltage range, 5.2mA output current specifications, and compliance certifications (ROHS3, REACH Unaffected, EAR99).

Substitute parts are grouped by manufacturer and packaging format. All identified substitutes maintain identical electrical specifications and package dimensions, ensuring direct functional replacement without circuit redesign. Packaging differences (Tube vs. Tape & Reel) and product status variations are noted but do not affect electrical compatibility.

Parameter Comparison

Engineering Selection Recommendations

For active production and new designs, CD74HC139M96 (Texas Instruments, Tape & Reel) and MC74HC139ADR2G (onsemi, Tape & Reel) are the preferred substitutes, both maintaining Active product status and full compliance with ROHS3 and REACH requirements.

For applications requiring Tube packaging, MC74HC139ADG (onsemi) provides parametric equivalence but carries Obsolete product status, limiting its suitability for long-term supply chain planning.

The 74HC139D,653 (Nexperia) variant operates within a narrower temperature range (-40°C to 125°C versus -55°C to 125°C), making it unsuitable for applications requiring the full extended low-temperature specification of the original CD74HC139M.

All substitutes are ROHS3 compliant and REACH unaffected, meeting regulatory requirements for commercial and industrial applications.

Frequently Asked Questions (FAQ)

Q: Can CD74HC139M96 directly replace CD74HC139M in existing designs? A: Yes. CD74HC139M96 is electrically and functionally identical to CD74HC139M. The difference is packaging format: CD74HC139M96 is supplied in Tape & Reel format, while CD74HC139M is supplied in Tube format. Both use the same 16-SOIC package footprint and meet identical electrical specifications.

Q: What is the difference between MC74HC139ADR2G and MC74HC139ADG? A: Both are onsemi 74HC139 variants with identical electrical specifications. MC74HC139ADR2G is supplied in Tape & Reel format with Active product status. MC74HC139ADG is supplied in Tube format but carries Obsolete product status, indicating limited future availability.

Q: Why is 74HC139D,653 not recommended as a primary substitute? A: While 74HC139D,653 maintains the same circuit configuration and package footprint, its operating temperature range is limited to -40°C to 125°C, compared to the CD74HC139M specification of -55°C to 125°C. This makes it unsuitable for applications requiring full extended temperature operation.

Q: Are all substitutes ROHS3 compliant? A: Yes. All identified substitute parts—CD74HC139M96, MC74HC139ADR2G, 74HC139D,653, and MC74HC139ADG—are ROHS3 compliant and REACH unaffected, meeting regulatory requirements for commercial and industrial applications.

Q: What packaging formats are available for 74HC139 substitutes? A: Substitutes are available in two packaging formats: Tube (CD74HC139M, MC74HC139ADG) and Tape & Reel (CD74HC139M96, MC74HC139ADR2G, 74HC139D,653). Selection depends on assembly process requirements and volume specifications.

Q: Can I use 74HC139D,653 in a design requiring -55°C operation? A: No. The 74HC139D,653 operating temperature range begins at -40°C. For applications requiring -55°C minimum operation, use CD74HC139M, CD74HC139M96, MC74HC139ADR2G, or MC74HC139ADG.