SN74LS139ANE4 Equivalent & Substitute Parts

Part Overview

The SN74LS139ANE4 is a dual 2-line to 4-line decoder/demultiplexer logic integrated circuit manufactured by Texas Instruments. This device features two independent 1 x 2:4 decoder circuits in a 16-pin DIP package and operates as an active logic component in digital systems requiring address decoding and signal demultiplexing functions. The part is classified as Active product status with full RoHS3 compliance. Substitute parts are identified when equivalent functional performance, electrical specifications, and mechanical compatibility are maintained across the allowed parameter set.

Substiute Parts

SN74LS139ANE4

Texas InstrumentsIn Stock: 987SN74LS139ANE4 Datasheet

Current PartRFQ

SN74LS139AN

Texas InstrumentsIn Stock: 2375SN74LS139AN Datasheet

Parametric EquivalentRFQ

SN74LS155AN

Texas InstrumentsIn Stock: 1997SN74LS155AN Datasheet

Parametric EquivalentRFQ

SN74S139AN

Texas InstrumentsIn Stock: 965SN74S139AN Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the SN74LS139ANE4 are qualified based on strict parameter matching across the following critical criteria:

Functional Equivalence: All substitute parts maintain identical decoder/demultiplexer circuit configuration (1 x 2:4) with two independent circuits.

Electrical Specifications: Output current ratings (400µA high, 8mA low), single supply voltage operation (4.75V ~ 5.25V), and operating temperature range (0°C ~ 70°C) are identical across all qualified substitutes.

Mechanical Compatibility: All substitutes use 16-pin DIP through-hole mounting with 0.300" (7.62mm) package dimensions, ensuring direct socket compatibility.

Packaging Format: All parts are supplied in tube packaging format.

Compliance Status: All substitutes maintain ROHS3 compliance, REACH unaffected status, and identical ECCN/HTSUS classifications.

Series Variations: Substitutes include both 74LS series (same logic family) and 74S series (faster Schottky variant) parts, both meeting the specified electrical and mechanical parameters.

Parameter Comparison

Engineering Selection Recommendations

All three substitute parts (SN74LS139AN, SN74LS155AN, SN74S139AN) are qualified equivalents for the SN74LS139ANE4 based on identical electrical specifications, mechanical compatibility, and compliance certifications.

SN74LS139AN: Direct functional equivalent within the 74LS logic family. Maintains identical performance characteristics and is suitable for direct replacement in applications where the original part number is unavailable.

SN74LS155AN: Functionally equivalent decoder/demultiplexer within the 74LS series. Meets all specified electrical and mechanical parameters and operates within the same temperature and voltage ranges.

SN74S139AN: Schottky variant within the 74S logic family. Maintains identical output current specifications and voltage supply requirements. The 74S series represents a faster logic family variant while preserving all critical electrical parameters specified for substitution.

All substitute parts carry Active product status, full RoHS3 compliance, and identical regulatory classifications (ECCN EAR99, HTSUS 8542.39.0001), confirming suitability for direct component selection in applications requiring SN74LS139ANE4 functionality.

Frequently Asked Questions (FAQ)

Q: Can SN74LS139AN be used as a direct replacement for SN74LS139ANE4?

A: Yes. Both parts are identical in circuit configuration (1 x 2:4 decoder/demultiplexer), output current ratings (400µA, 8mA), supply voltage (4.75V ~ 5.25V), operating temperature (0°C ~ 70°C), and 16-DIP package dimensions. The primary difference is the packaging format designation (ANE4 indicates tube packaging with specific handling requirements), but electrical and mechanical compatibility is complete.

Q: What is the difference between SN74LS139AN and SN74S139AN?

A: Both parts are 2-line to 4-line decoders with identical electrical specifications for output current, supply voltage, and operating temperature. The primary distinction is the logic family: 74LS represents low-power Schottky logic, while 74S represents standard Schottky logic. Both meet the specified electrical parameters and are functionally equivalent for applications requiring the stated performance characteristics.

Q: Are all substitute parts available in the same 16-DIP package?

A: Yes. All qualified substitutes (SN74LS139AN, SN74LS155AN, SN74S139AN) use 16-pin DIP through-hole packaging with 0.300" (7.62mm) spacing, ensuring direct socket compatibility with the original SN74LS139ANE4.

Q: Do all substitute parts meet RoHS and REACH compliance requirements?

A: Yes. All substitute parts carry ROHS3 compliance and REACH unaffected status, matching the compliance profile of the SN74LS139ANE4. All parts share identical ECCN (EAR99) and HTSUS (8542.39.0001) classifications.

Q: What determines whether a part qualifies as a substitute for the SN74LS139ANE4?

A: Substitution is based on matching the following parameters: decoder/demultiplexer type with 1 x 2:4 circuit configuration, two independent circuits, output current ratings (400µA high, 8mA low), single supply voltage operation (4.75V ~ 5.25V), operating temperature range (0°C ~ 70°C), through-hole mounting, 16-DIP package format, and compliance certifications (RoHS3, REACH, ECCN, HTSUS).

Q: Can SN74LS155AN be used interchangeably with SN74LS139AN?

A: Yes. Both parts maintain identical electrical specifications, circuit configuration, output current ratings, supply voltage requirements, operating temperature range, and 16-DIP package dimensions. Both are qualified substitutes for the SN74LS139ANE4 and are functionally interchangeable within the specified parameter set.