74LVC138AD-Q100J Equivalent & Substitute Parts

Part Overview

The 74LVC138AD-Q100J is a decoder/demultiplexer logic IC manufactured by Nexperia USA Inc. in the 74LVC series. This device implements a 1 x 3:8 decoder function in a 16-SOIC surface mount package and is qualified to AEC-Q100 automotive standards. The part is currently active in production with 2929 units in stock. Equivalent and substitute parts are identified for applications requiring alternative sourcing, inventory management, or design flexibility while maintaining functional and electrical compatibility.

Substiute Parts

74LVC138AD-Q100J

Nexperia USA Inc.In Stock: 303474LVC138AD-Q100J Datasheet

Current PartRFQ

74LVC138AD,118

Nexperia USA Inc.In Stock: 1004574LVC138AD,118 Datasheet

Parametric EquivalentRFQ

MC74LCX138DR2G

onsemiIn Stock: 8711MC74LCX138DR2G Datasheet

DirectRFQ

NLV74LCX138DR2G

onsemiIn Stock: 3352NLV74LCX138DR2G Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the 74LVC138AD-Q100J are classified based on functional and electrical equivalence within the allowed parameters for decoder/demultiplexer logic devices:

Parametric Equivalent: Parts sharing identical circuit configuration (1 x 3:8), output current ratings (24mA/24mA), supply voltage range (1.2V ~ 3.6V), package type (16-SOIC), and RoHS/REACH compliance. These parts are direct functional replacements with no design modifications required.

Direct Manufacturer Equivalent: Parts with the same decoder/demultiplexer function and package, but from alternative manufacturers. These maintain the same circuit configuration and output specifications, though operating temperature or supply voltage ranges may differ within acceptable industrial/automotive limits.

Similar Parts (Obsolete Status): Parts with identical functional specifications and package compatibility but marked as obsolete. These are suitable for legacy system support or inventory continuation only.

Key parameters determining substitutability:

• Circuit configuration: 1 x 3:8 decoder/demultiplexer
• Output current capability: 24mA minimum (high and low)
• Supply voltage compatibility: minimum 1.2V to 3.6V range
• Package: 16-SOIC form factor
• Mounting: Surface mount
• RoHS3 compliance

Parameter Comparison

Engineering Selection Recommendations

74LVC138AD,118 (Parametric Equivalent - Recommended Primary Substitute)

This part is the preferred substitute for the 74LVC138AD-Q100J. Both are manufactured by Nexperia USA Inc. within the 74LVC series and share identical electrical specifications: 1 x 3:8 decoder configuration, 24mA output current, 1.2V to 3.6V supply voltage range, and -40°C to 125°C operating temperature. The 16-SOIC package and surface mount technology are identical. Both parts are ROHS3 compliant and active in production. Higher inventory availability (9936 units) supports supply chain continuity. This part is suitable for all applications where the main part is specified.

MC74LCX138DR2G (Direct Manufacturer Equivalent - Alternative Source)

This onsemi part provides functional equivalence with identical 1 x 3:8 decoder configuration, 24mA output current, and 16-SOIC package. The supply voltage range is 2V to 3.6V (narrower than the main part's 1.2V minimum) and operating temperature is -40°C to 85°C (lower maximum than the main part's 125°C). Selection of this part requires confirmation that the application operates within these narrower specifications. This part is active in production with 8645 units in stock and is ROHS3 compliant. Use this part only when supply voltage remains above 2V and operating temperature does not exceed 85°C.

NLV74LCX138DR2G (Similar Part - Legacy Applications Only)

This onsemi part is marked as obsolete and is not recommended for new designs. It shares the same 1 x 3:8 decoder function, 24mA output current, 2V to 3.6V supply voltage, and 16-SOIC package as the MC74LCX138DR2G. It carries AEC-Q100 automotive qualification and ROHS3 compliance. Limited inventory (3304 units) and obsolete status restrict its use to legacy system maintenance or end-of-life production runs only.

Frequently Asked Questions (FAQ)

Q: Can 74LVC138AD,118 be used as a direct replacement for 74LVC138AD-Q100J?

A: Yes. Both parts are manufactured by Nexperia USA Inc. in the 74LVC series with identical electrical specifications: 1 x 3:8 decoder configuration, 24mA output current, 1.2V to 3.6V supply voltage, -40°C to 125°C operating temperature, and 16-SOIC package. No design modifications are required.

Q: What are the limitations of using MC74LCX138DR2G as a substitute?

A: The MC74LCX138DR2G has a narrower supply voltage range (2V to 3.6V minimum versus 1.2V for the main part) and lower maximum operating temperature (85°C versus 125°C). Applications requiring operation below 2V supply voltage or above 85°C ambient temperature are not compatible with this substitute.

Q: Why is NLV74LCX138DR2G marked as obsolete?

A: The NLV74LCX138DR2G is no longer in active production. It is retained in inventory for legacy system support only. New designs should use active parts such as 74LVC138AD,118 or MC74LCX138DR2G.

Q: Are all substitute parts in the same package?

A: Yes. All listed substitute parts use the 16-SOIC (0.154", 3.90mm Width) surface mount package. PCB layout and footprint compatibility is maintained across all parts.

Q: Do all substitute parts meet RoHS3 compliance?

A: Yes. All substitute parts listed are ROHS3 compliant and REACH unaffected, matching the environmental compliance of the main part.

Q: Which substitute part has the best inventory availability?

A: The 74LVC138AD,118 has the highest inventory with 9936 units in stock, followed by MC74LCX138DR2G with 8645 units.

Q: Is automotive qualification required for my application?

A: The main part 74LVC138AD-Q100J carries AEC-Q100 automotive qualification. The 74LVC138AD,118 does not specify automotive grade. The NLV74LCX138DR2G carries AEC-Q100 qualification. If automotive qualification is mandatory, confirm with the 74LVC138AD,118 manufacturer or select NLV74LCX138DR2G for legacy applications.