SN74LVC139APWRG4 Equivalent & Substitute Parts

Part Overview

The SN74LVC139APWRG4 is a Decoder/Demultiplexer logic IC manufactured by Texas Instruments, featuring a 1 x 2:4 circuit configuration in a 16-TSSOP surface mount package. This part is currently discontinued at DiGi Electronics, necessitating identification of equivalent alternatives that maintain functional and electrical compatibility. Substitute parts must preserve the decoder/demultiplexer functionality, output current specifications, voltage supply range, and thermal operating characteristics to ensure direct replacement capability in existing designs.

Substiute Parts

SN74LVC139APWRG4

Texas InstrumentsIn Stock: 983SN74LVC139APWRG4 Datasheet

Current PartRFQ

SN74LVC139APWR

Texas InstrumentsIn Stock: 6204SN74LVC139APWR Datasheet

MFR RecommendedRFQ

SN74LVC139APWT

Texas InstrumentsIn Stock: 1896SN74LVC139APWT Datasheet

Parametric EquivalentRFQ

MC74LCX139DTR2G

onsemiIn Stock: 3659MC74LCX139DTR2G Datasheet

DirectRFQ

74LVC139PW,118

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

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the SN74LVC139APWRG4 is determined by the following critical parameters:

• Functional Type: Decoder/Demultiplexer with 1 x 2:4 circuit configuration and 2 independent circuits
• Output Current Capability: 24mA high and low output current
• Voltage Supply Compatibility: Single supply operation within overlapping voltage ranges
• Package Compatibility: 16-TSSOP surface mount package with identical pin configuration
• Thermal Range: Operating temperature specifications that meet or exceed -40°C to 85°C minimum
• Compliance: ROHS3 compliance and MSL Level 1 rating

Substitute parts are grouped based on manufacturer origin and product status while maintaining these electrical and mechanical parameters. Parts from different manufacturers (Texas Instruments, onsemi, Nexperia) are included where parametric equivalence is confirmed.

Parameter Comparison

Engineering Selection Recommendations

Primary Substitutes (Active Product Status)

SN74LVC139APWR and SN74LVC139APWT from Texas Instruments are the preferred substitutes. Both parts maintain identical electrical specifications to the discontinued SN74LVC139APWRG4, including voltage supply range (1.65V ~ 3.6V) and operating temperature (-40°C ~ 85°C). Both are currently in active production status with substantial inventory availability (6100 Pcs and 1798 Pcs respectively). The difference between these two parts is packaging format: SN74LVC139APWR is supplied in Tape & Reel format, while SN74LVC139APWT is also supplied in Tape & Reel format.

74LVC139PW,118 from Nexperia USA Inc. is an alternative active substitute with identical functional and mechanical specifications. This part features an extended operating temperature range (-40°C ~ 125°C) and higher inventory availability (12951 Pcs). The voltage supply range is 2.7V ~ 3.6V, which is narrower than the main part but covers standard logic supply voltages. This part is suitable for applications not requiring the full 1.65V lower supply limit.

Secondary Substitute (Obsolete Status)

MC74LCX139DTR2G from onsemi is functionally equivalent but carries obsolete product status. This part maintains the required 24mA output current and 16-TSSOP package configuration. The voltage supply range is 2V ~ 3.6V, which is narrower than the main part. Use of this part is not recommended for new designs due to obsolete status, though it may be considered for legacy system maintenance where inventory is available.

Frequently Asked Questions (FAQ)

Q: Can SN74LVC139APWR directly replace SN74LVC139APWRG4?

A: Yes. SN74LVC139APWR is a direct functional and electrical equivalent. Both parts share identical decoder/demultiplexer circuit configuration (1 x 2:4), output current specifications (24mA), voltage supply range (1.65V ~ 3.6V), operating temperature range (-40°C ~ 85°C), and 16-TSSOP package. The primary difference is packaging format (Tape & Reel vs. the original packaging designation).

Q: What is the voltage supply difference between substitutes?

A: The main part and most substitutes operate at 1.65V ~ 3.6V. The MC74LCX139DTR2G operates at 2V ~ 3.6V, and 74LVC139PW,118 operates at 2.7V ~ 3.6V. All substitutes cover standard 3.3V and 5V logic supply voltages. Selection depends on whether your design requires operation below 2V.

Q: Are all substitutes in the same package?

A: Yes. All listed substitutes use the 16-TSSOP (0.173", 4.40mm Width) surface mount package with identical pin configuration, ensuring direct PCB compatibility.

Q: Which substitute has the best availability?

A: 74LVC139PW,118 from Nexperia has the highest inventory (12951 Pcs), followed by SN74LVC139APWR from Texas Instruments (6100 Pcs).

Q: Can I use MC74LCX139DTR2G as a substitute?

A: MC74LCX139DTR2G is functionally equivalent but carries obsolete product status. It is not recommended for new designs. Use only for legacy system maintenance where no active alternatives are available.

Q: What compliance certifications apply to all substitutes?

A: All substitutes are ROHS3 compliant, REACH unaffected, and carry Moisture Sensitivity Level 1 (Unlimited), matching the original part's compliance profile.