74LVC139DB,118 Equivalent & Substitute Parts

Part Overview

The 74LVC139DB,118 is a decoder/demultiplexer logic integrated circuit manufactured by Nexperia USA Inc. in the 74LVC series. This component features a 1 x 2:4 decoder configuration with dual independent circuits, designed for signal routing and decoding applications in digital systems. The part is currently classified as obsolete, making equivalent substitute parts necessary for new designs and ongoing production support. Substitute components maintain functional equivalence while offering active product status and improved availability.

Substiute Parts

74LVC139DB,118

Nexperia USA Inc.In Stock: 111274LVC139DB,118 Datasheet

Current PartRFQ

74LVC139PW,118

Nexperia USA Inc.In Stock: 1302274LVC139PW,118 Datasheet

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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,118 is determined by the following critical parameters:

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

Package Compatibility: Substitutes are grouped into two package categories:

• 16-SSOP package (0.209", 5.30mm Width): Direct pin-compatible replacement
• 16-TSSOP package (0.173", 4.40mm Width): Functionally equivalent with different footprint

Voltage Supply Range: The main part operates at 2.7V ~ 3.6V. Substitute parts from Texas Instruments operate at 1.65V ~ 3.6V, providing extended lower voltage capability while maintaining full compatibility within the original specification range.

Temperature Range: The main part supports -40°C ~ 125°C. Most Texas Instruments substitutes support -40°C ~ 85°C, with the SN74LVC139AQPWRQ1 extending to -40°C ~ 125°C for automotive applications.

Product Status: Active substitutes ensure ongoing availability and manufacturing support, contrasting with the obsolete main part.

Parameter Comparison

Engineering Selection Recommendations

For Direct Pin-Compatible Replacement (16-SSOP Package)

The SN74LVC139ADBR from Texas Instruments provides direct pin-compatible substitution in the 16-SSOP package. This part maintains active product status and ROHS3 compliance. The extended voltage supply range (1.65V ~ 3.6V) offers design flexibility while remaining fully compatible with the original 2.7V ~ 3.6V specification. Operating temperature range of -40°C ~ 85°C covers standard industrial applications within the original part's temperature envelope.

For Package Flexibility (16-TSSOP Package)

The 74LVC139PW,118 from Nexperia USA Inc. maintains the same manufacturer lineage as the original part while transitioning to the 16-TSSOP package. This option preserves the full -40°C ~ 125°C temperature range and 2.7V ~ 3.6V voltage specification. The 16-TSSOP package offers reduced footprint dimensions (0.173", 4.40mm Width) compared to the 16-SSOP, requiring PCB layout modification.

Texas Instruments alternatives in 16-TSSOP packaging (SN74LVC139APW, SN74LVC139APWR, SN74LVC139APWT) provide active product status with extended voltage capability. These parts are functionally equivalent with operating temperature limited to -40°C ~ 85°C.

For Automotive Applications

The SN74LVC139AQPWRQ1 is qualified to AEC-Q100 automotive standards with full -40°C ~ 125°C temperature range support. This part is appropriate for automotive-grade designs requiring extended temperature operation and formal qualification documentation.

Frequently Asked Questions (FAQ)

Q: Can the 74LVC139DB,118 be directly replaced with the SN74LVC139ADBR?

A: Yes. Both parts use the 16-SSOP package with identical pinout and functional configuration. The SN74LVC139ADBR maintains 24mA output current and 1 x 2:4 decoder functionality. The extended voltage range (1.65V ~ 3.6V) is backward compatible with the original 2.7V ~ 3.6V specification. Operating temperature range differs: the original supports -40°C ~ 125°C while the SN74LVC139ADBR supports -40°C ~ 85°C. Verify temperature requirements for your application.

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

A: Both are surface-mount packages with 16 pins and identical electrical functionality. The 16-SSOP (Shrink Small Outline Package) has a body width of 0.209" (5.30mm). The 16-TSSOP (Thin Shrink Small Outline Package) has a narrower body width of 0.173" (4.40mm). Package selection requires PCB footprint compatibility. Pin pitch and electrical characteristics are equivalent.

Q: Are all substitute parts RoHS3 compliant?

A: Yes. All listed substitute parts maintain ROHS3 compliance, matching the original 74LVC139DB,118 specification.

Q: Which substitute part supports the full -40°C ~ 125°C temperature range?

A: The 74LVC139PW,118 (Nexperia) and SN74LVC139AQPWRQ1 (Texas Instruments) both support -40°C ~ 125°C operation. The SN74LVC139AQPWRQ1 includes AEC-Q100 automotive qualification. Other Texas Instruments alternatives support -40°C ~ 85°C.

Q: Can I use a substitute part with a different voltage supply range?

A: Yes, provided your circuit operates within the overlapping voltage range. The original part specifies 2.7V ~ 3.6V. Texas Instruments substitutes extend to 1.65V ~ 3.6V, which includes the original range. If your design operates at 2.7V or higher, any substitute is compatible. If your design requires operation below 2.7V, use only Texas Instruments parts.

Q: What packaging options are available for the 74LVC139 decoder?

A: The 74LVC139 base product is available in two package types: 16-SSOP (0.209", 5.30mm width) and 16-TSSOP (0.173", 4.40mm width). Both packages are surface-mount with identical pin counts and electrical specifications. Select based on PCB layout requirements and available footprint space.