74LVC139DB,112 Equivalent & Substitute Parts

Part Overview

The 74LVC139DB,112 is a decoder/demultiplexer logic integrated circuit manufactured by Nexperia USA Inc. in the 74LVC series. This device features a 1 x 2:4 decoder configuration with dual independent circuits, housed in a 16-SSOP surface mount package. The part is classified as obsolete, making identification of functionally equivalent alternatives essential for ongoing design support and production continuity.

Substiute Parts

74LVC139DB,112

Nexperia USA Inc.In Stock: 78574LVC139DB,112 Datasheet

Current PartRFQ

SN74LVC139ADBR

Texas InstrumentsIn Stock: 4183SN74LVC139ADBR Datasheet

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SN74LVC139APW

Texas InstrumentsIn Stock: 1295SN74LVC139APW Datasheet

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SN74LVC139APWR

Texas InstrumentsIn Stock: 6204SN74LVC139APWR Datasheet

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SN74LVC139APWT

Texas InstrumentsIn Stock: 1896SN74LVC139APWT Datasheet

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SN74LVC139AQPWRQ1

Texas InstrumentsIn Stock: 1687SN74LVC139AQPWRQ1 Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitution of the 74LVC139DB,112 is determined by the following critical parameters:

Functional Equivalence: All substitute parts maintain the identical 1 x 2:4 decoder/demultiplexer circuit configuration with 2 independent circuits and 24mA output current capability.

Voltage Supply Compatibility: The main part operates at 2.7V ~ 3.6V. All Texas Instruments substitutes operate at 1.65V ~ 3.6V, providing broader supply voltage range compatibility while maintaining the 3.6V upper limit.

Package Compatibility: Substitutes are grouped into two package types:

• 16-SSOP (0.209", 5.30mm Width): SN74LVC139ADBR maintains identical package footprint
• 16-TSSOP (0.173", 4.40mm Width): SN74LVC139APW, SN74LVC139APWR, SN74LVC139APWT, SN74LVC139AQPWRQ1 offer alternative package with reduced width

Temperature Range: Standard industrial substitutes support -40°C ~ 85°C. The SN74LVC139AQPWRQ1 extends to -40°C ~ 125°C and includes automotive qualification (AEC-Q100).

Product Status: All Texas Instruments substitutes are active products, ensuring long-term availability and supply chain continuity.

Parameter Comparison

Engineering Selection Recommendations

Direct Footprint Replacement: SN74LVC139ADBR is the primary substitute for the 74LVC139DB,112. Both devices use the 16-SSOP package with identical 0.209" width, enabling direct PCB footprint compatibility. This part is manufactured by Texas Instruments and maintains active product status, ensuring supply chain continuity.

Package Transition Option: For designs where PCB layout permits, the SN74LVC139APW, SN74LVC139APWR, and SN74LVC139APWT offer the 16-TSSOP package alternative with reduced width (0.173", 4.40mm). These parts are functionally equivalent and support the same circuit configuration and output current specifications.

Extended Temperature Applications: The SN74LVC139AQPWRQ1 extends the operating temperature range to -40°C ~ 125°C, matching the original part's temperature specification. This variant includes automotive-grade qualification (AEC-Q100) and is suitable for applications requiring extended temperature performance or automotive compliance.

Voltage Supply Advantage: All Texas Instruments substitutes support a lower minimum supply voltage of 1.65V compared to the original 2.7V minimum, providing enhanced flexibility for low-voltage applications while maintaining full compatibility at the 3.6V upper limit.

Compliance and Regulatory: All substitute parts maintain ROHS3 compliance, MSL Level 1 rating, and REACH unaffected status, ensuring regulatory alignment with the original part.

Frequently Asked Questions (FAQ)

Q: Can SN74LVC139ADBR be used as a direct replacement for 74LVC139DB,112?

A: Yes. Both parts share identical 16-SSOP package dimensions (0.209", 5.30mm width), equivalent decoder/demultiplexer circuit configuration (1 x 2:4), and matching output current specifications (24mA). The SN74LVC139ADBR is manufactured by Texas Instruments and maintains active product status.

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

A: The 16-SSOP package has a width of 0.209" (5.30mm), while the 16-TSSOP package has a width of 0.173" (4.40mm). Both are surface mount packages with 16 pins. The TSSOP variant is narrower and requires different PCB footprint design. Substitution between these packages requires PCB layout modification.

Q: Why does the original part specify 2.7V ~ 3.6V supply voltage while substitutes specify 1.65V ~ 3.6V?

A: The Texas Instruments substitutes support a broader supply voltage range. The lower 1.65V minimum does not affect compatibility at the original 2.7V ~ 3.6V operating range. This extended range provides additional design flexibility for applications requiring lower supply voltages.

Q: Is the SN74LVC139AQPWRQ1 suitable for automotive applications?

A: Yes. The SN74LVC139AQPWRQ1 is qualified to AEC-Q100 automotive standards and supports the extended operating temperature range of -40°C ~ 125°C, matching the original part's temperature specification. This variant is appropriate for automotive-grade applications.

Q: What packaging options are available for the substitute parts?

A: SN74LVC139ADBR is supplied in Tape & Reel (TR) packaging with 16-SSOP case. The SN74LVC139APW is supplied in Tube packaging with 16-TSSOP case. The SN74LVC139APWR, SN74LVC139APWT, and SN74LVC139AQPWRQ1 are supplied in Tape & Reel (TR) packaging with 16-TSSOP case. Packaging selection depends on production volume and assembly requirements.

Q: Are all substitute parts RoHS3 compliant?

A: Yes. All substitute parts listed maintain ROHS3 compliance, MSL Level 1 rating, and REACH unaffected status, ensuring full regulatory alignment with the original 74LVC139DB,112.