74LVC139PW,112 Equivalent & Substitute Parts

Part Overview

The 74LVC139PW,112 is a decoder/demultiplexer logic integrated circuit manufactured by Nexperia USA Inc. in the 74LVC series. This device implements a 1 x 2:4 decoder/demultiplexer function in a 16-pin TSSOP surface mount package. The part is classified as obsolete, making equivalent and substitute parts necessary for ongoing design support and procurement.

Key Parameters

Parameter	Value
Manufacturer Part Number	74LVC139PW,112
Manufacturer	Nexperia USA Inc.
Type	Decoder/Demultiplexer
Circuit Configuration	1 x 2:4
Independent Circuits	2
Package / Case	16-TSSOP (0.173", 4.40mm Width)
Voltage Supply	2.7V ~ 3.6V
Output Current (High/Low)	24mA / 24mA
Operating Temperature	-40°C ~ 125°C
Mounting Type	Surface Mount
Product Status	Obsolete
RoHS Status	ROHS3 Compliant

Substitute Part Grouping Explanation

Substitution of the 74LVC139PW,112 is determined by the following critical parameters:

Functional equivalence: Decoder/Demultiplexer type with 1 x 2:4 circuit configuration and 2 independent circuits
Electrical compatibility: Output current capability (24mA high/low), voltage supply range, and operating temperature range
Package compatibility: 16-pin TSSOP surface mount package with 0.173" width and 4.40mm pitch
Compliance: RoHS3 compliance and REACH unaffected status

Substitute parts are grouped into two categories:

Direct Functional Equivalents maintain identical or superior electrical specifications within the same package type (16-TSSOP).

Package Variant Equivalents provide the same functional and electrical performance but in alternative surface mount packages (16-TVSOP) with compatible pinout and mounting characteristics.

Parameter Comparison

Part Number	Manufacturer	Series	Circuit Config	Voltage Supply	Temp Range	Package	Status	Automotive Grade
74LVC139PW,112	Nexperia USA Inc.	74LVC	1 x 2:4	2.7V ~ 3.6V	-40°C ~ 125°C	16-TSSOP	Obsolete	No
MC74LCX139DTR2G	onsemi	74LCX	1 x 2:4	2V ~ 3.6V	-40°C ~ 85°C	16-TSSOP	Obsolete	No
CLVC139AQPWRG4Q1	Texas Instruments	74LVC	1 x 2:4	1.65V ~ 3.6V	-40°C ~ 125°C	16-TSSOP	Active	Yes (AEC-Q100)
SN74LVC139ADGVR	Texas Instruments	74LVC	1 x 2:4	1.65V ~ 3.6V	-40°C ~ 85°C	16-TVSOP	Active	No
SN74LVC139APW	Texas Instruments	74LVC	1 x 2:4	1.65V ~ 3.6V	-40°C ~ 85°C	16-TSSOP	Active	No
SN74LVC139APWR	Texas Instruments	74LVC	1 x 2:4	1.65V ~ 3.6V	-40°C ~ 85°C	16-TSSOP	Active	No
SN74LVC139APWT	Texas Instruments	74LVC	1 x 2:4	1.65V ~ 3.6V	-40°C ~ 85°C	16-TSSOP	Active	No
SN74LVC139AQPWRQ1	Texas Instruments	74LVC	1 x 2:4	1.65V ~ 3.6V	-40°C ~ 125°C	16-TSSOP	Active	Yes (AEC-Q100)

Engineering Selection Recommendations

For standard industrial applications requiring direct replacement in existing designs, select from active-status Texas Instruments parts in the 74LVC series: SN74LVC139APW, SN74LVC139APWR, or SN74LVC139APWT. These parts maintain 16-TSSOP package compatibility and provide extended voltage supply range (1.65V ~ 3.6V) compared to the original specification.

For automotive applications requiring AEC-Q100 qualification, select CLVC139AQPWRG4Q1 or SN74LVC139AQPWRQ1. Both parts maintain the 16-TSSOP package, support the full -40°C ~ 125°C temperature range, and carry automotive-grade certification.

For applications with extended temperature requirements (-40°C ~ 125°C), CLVC139AQPWRG4Q1 and SN74LVC139AQPWRQ1 are the only active substitutes that maintain this specification.

For package-constrained designs where 16-TVSOP is acceptable, SN74LVC139ADGVR provides an active alternative with compatible electrical performance.

All recommended substitutes maintain RoHS3 compliance and REACH unaffected status consistent with the original part.

Frequently Asked Questions (FAQ)

Q: Can MC74LCX139DTR2G be used as a direct replacement for 74LVC139PW,112?

A: MC74LCX139DTR2G provides functional equivalence with identical 1 x 2:4 decoder/demultiplexer configuration, 24mA output current, and 16-TSSOP package. However, it is also classified as obsolete and has a reduced operating temperature range (-40°C ~ 85°C) compared to the original part (-40°C ~ 125°C). For new designs, active-status alternatives are preferred.

Q: What is the difference between 16-TSSOP and 16-TVSOP packages?

A: Both are 16-pin surface mount packages with 0.173" width and 4.40mm pitch. TSSOP (Thin Shrink Small Outline Package) and TVSOP (Thin Very Small Outline Package) are functionally equivalent for this decoder/demultiplexer application. Pin assignments and electrical performance remain identical.

Q: Are automotive-grade parts required for this application?

A: Automotive-grade qualification (AEC-Q100) is required only if the application operates in automotive environments or must meet automotive reliability standards. CLVC139AQPWRG4Q1 and SN74LVC139AQPWRQ1 carry this certification. Standard industrial-grade alternatives do not.

Q: What is the minimum voltage supply requirement for substitute parts?

A: The original 74LVC139PW,112 requires 2.7V ~ 3.6V. Most active substitutes (Texas Instruments 74LVC series) support a lower minimum of 1.65V ~ 3.6V, providing greater design flexibility. MC74LCX139DTR2G supports 2V ~ 3.6V.

Q: Can I use SN74LVC139APW in high-temperature applications?

A: SN74LVC139APW operates from -40°C ~ 85°C, which is below the original part's -40°C ~ 125°C range. For applications requiring the full 125°C upper limit, use CLVC139AQPWRG4Q1 or SN74LVC139AQPWRQ1.

Q: What packaging options are available for substitutes?

A: Substitute parts are available in Tape & Reel (TR), Tube, and Cut Tape (CT) packaging formats. Selection depends on procurement volume and assembly requirements. All maintain the same 16-pin TSSOP or 16-TVSOP package footprint.

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