CD74HCT138M96G4 Equivalent & Substitute Parts

Part Overview

The CD74HCT138M96G4 is a decoder/demultiplexer logic integrated circuit manufactured by Texas Instruments, featuring a 1 x 3:8 configuration in a 16-SOIC surface mount package. This part is classified as obsolete, necessitating identification of active equivalent and substitute components for new designs and ongoing production requirements. Equivalent parts maintain identical electrical and mechanical specifications, while substitute parts provide functional compatibility within defined parameter tolerances.

Substiute Parts

CD74HCT138M96G4

Texas InstrumentsIn Stock: 784CD74HCT138M96G4 Datasheet

Current PartRFQ

CD74HCT138M96

Texas InstrumentsIn Stock: 4332CD74HCT138M96 Datasheet

MFR RecommendedRFQ

CD74HCT137M96

Texas InstrumentsIn Stock: 3541CD74HCT137M96 Datasheet

Parametric EquivalentRFQ

CD74HCT137MT

Texas InstrumentsIn Stock: 3059CD74HCT137MT Datasheet

Parametric EquivalentRFQ

CD74HCT238M96

Texas InstrumentsIn Stock: 1467CD74HCT238M96 Datasheet

Parametric EquivalentRFQ

74HCT138D,653

Nexperia USA Inc.In Stock: 1040774HCT138D,653 Datasheet

MFR RecommendedRFQ

74HCT138D-Q100,118

NXP USA Inc.In Stock: 503774HCT138D-Q100,118 Datasheet

MFR RecommendedRFQ

74HCT138S16-13

Diodes IncorporatedIn Stock: 2023574HCT138S16-13 Datasheet

MFR RecommendedRFQ

MM74HCT138M

Fairchild SemiconductorIn Stock: 1572MM74HCT138M Datasheet

MFR RecommendedRFQ

MM74HCT138MX

Fairchild SemiconductorIn Stock: 2327MM74HCT138MX Datasheet

MFR RecommendedRFQ

MC74HCT138ADR2G

onsemiIn Stock: 5167MC74HCT138ADR2G Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility is determined by strict adherence to the following parameters: circuit configuration (1 x 3:8), package type (16-SOIC), voltage supply range (4.5V ~ 5.5V), output current specifications (4mA, 4mA), and mounting type (surface mount). Parts are grouped into two categories:

Manufacturer Recommended Substitutes (MFR Recommended): Parts from alternative manufacturers that maintain identical electrical and mechanical specifications with active product status.

Parametric Equivalents: Parts with identical functional parameters but potentially different product status or packaging options. These include the CD74HCT137 and CD74HCT238 variants, which share the same 1 x 3:8 decoder/demultiplexer configuration and package specifications.

Parameter Comparison

Engineering Selection Recommendations

Primary Recommendation: CD74HCT138M96 (Texas Instruments) provides direct substitution with active product status, identical electrical specifications, and extended temperature range (-55°C ~ 125°C). This part maintains full compatibility with the obsolete CD74HCT138M96G4.

Alternative Selections by Application Requirements:

For applications requiring extended inventory availability and active production status, 74HCT138S16-13 (Diodes Incorporated) offers the highest stock level (20200 Pcs) with identical core specifications and ROHS3 compliance.

For automotive-grade applications requiring AEC-Q100 qualification, 74HCT138D-Q100,118 (NXP USA Inc.) provides certified automotive-grade decoder/demultiplexer functionality.

For applications with relaxed temperature requirements (-40°C ~ 85°C), MM74HCT138MX (Fairchild Semiconductor) provides active status with slightly elevated output current specifications (4.8mA vs 4mA).

MC74HCT138ADR2G (onsemi) maintains full parameter equivalence with extended temperature range and active product status, suitable for demanding thermal environments.

Frequently Asked Questions (FAQ)

Q: Can CD74HCT137M96 or CD74HCT238M96 be used as direct replacements for CD74HCT138M96G4?

A: Yes. Both parts maintain identical electrical specifications (1 x 3:8 configuration, 4.5V ~ 5.5V supply, 4mA output current, 16-SOIC package) and are functionally compatible. The primary difference is the base product number designation (137 vs 138 vs 238), which reflects internal logic variations that do not affect substitution eligibility for this decoder/demultiplexer application.

Q: What is the significance of the operating temperature range difference between -55°C ~ 125°C and -40°C ~ 85°C?

A: The extended range (-55°C ~ 125°C) accommodates military and high-reliability applications requiring operation in extreme thermal environments. The narrower range (-40°C ~ 85°C) is suitable for commercial and industrial applications. Selection depends on specific application thermal requirements.

Q: Are there packaging differences between these substitute parts?

A: All listed substitutes use the 16-SOIC (0.154", 3.90mm Width) surface mount package. Packaging options (Tape & Reel, Cut Tape, Bulk) affect supply chain logistics but do not impact electrical or mechanical compatibility.

Q: What does "Last Time Buy" product status mean for CD74HCT137MT?

A: Last Time Buy indicates the manufacturer will accept orders for a limited period before discontinuing production. This part remains functionally equivalent but should not be selected for new long-term production designs. Active status parts are recommended for ongoing production requirements.

Q: Do output current specifications of 4.8mA (Fairchild parts) versus 4mA affect compatibility?

A: The higher output current (4.8mA) represents enhanced drive capability and remains compatible with circuits designed for 4mA output. This provides additional design margin for applications with higher load requirements.