74VHC02SJ NOR Gate IC Equivalent & Substitute Parts

Part Overview

The 74VHC02SJ is a 4-channel 2-input NOR gate logic IC manufactured by onsemi in a 14-SOP surface mount package. This part is classified as obsolete, making identification of functionally equivalent alternatives essential for design continuity and procurement planning. The 74VHC02 series provides standard logic gating functionality suitable for digital circuit applications requiring NOR logic operations across a wide supply voltage range.

Substiute Parts

74VHC02SJ

onsemiIn Stock: 115974VHC02SJ Datasheet

Current PartRFQ

SN74AHC02NSR

Texas InstrumentsIn Stock: 4849SN74AHC02NSR Datasheet

DirectRFQ

74AHC02D,118

NXP USA Inc.In Stock: 1177874AHC02D,118 Datasheet

SimilarRFQ

SN74AHC02D

Texas InstrumentsIn Stock: 5434SN74AHC02D Datasheet

SimilarRFQ

SN74AHC02DR

Texas InstrumentsIn Stock: 3792SN74AHC02DR Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the 74VHC02SJ is determined by the following critical parameters:

• Logic Function: All substitutes must provide 4-channel 2-input NOR gate functionality
• Electrical Specifications: Supply voltage range (2V ~ 5.5V), quiescent current (2 µA max), and output current (8mA) must be met or exceeded
• Package Compatibility: Surface mount 14-SOIC package with matching pin configuration
• Operating Temperature: Minimum operating range of -40°C to 85°C

The substitute parts identified below maintain functional and electrical equivalence to the 74VHC02SJ while offering active product status and improved availability.

Parameter Comparison

Engineering Selection Recommendations

Primary Recommendation: SN74AHC02NSR (Texas Instruments)

The SN74AHC02NSR is the preferred direct substitute for the 74VHC02SJ. This part maintains full electrical equivalence across all critical parameters, offers active product status with robust availability, and carries ROHS3 compliance certification. The extended operating temperature range (-40°C to 125°C) provides additional margin beyond the original specification. Packaging in Tape & Reel format supports automated assembly processes.

Secondary Recommendation: SN74AHC02DR (Texas Instruments)

The SN74AHC02DR provides equivalent functionality with active product status and ROHS3 compliance. This part is available in Cut Tape and Digi-Reel packaging options, offering flexibility for different procurement and assembly workflows. Electrical specifications are identical to the SN74AHC02NSR.

Alternative Consideration: 74AHC02D,118 (NXP USA Inc.)

The 74AHC02D,118 from NXP maintains full functional and electrical equivalence with active product status. This part offers the fastest propagation delay (7.5ns) matching the original 74VHC02SJ specification. Package dimensions differ slightly (0.154" width versus 0.209"), requiring verification of PCB layout compatibility before selection.

Not Recommended: SN74AHC02D (Texas Instruments)

While functionally equivalent, this part is discontinued at DiGi Electronics, limiting long-term procurement viability despite current inventory availability.

Frequently Asked Questions (FAQ)

Q: Can the 74VHC02SJ be directly replaced with any of these substitutes?

A: Yes, all listed substitutes maintain the same logic function (4-channel 2-input NOR gate), electrical specifications, and surface mount 14-SOIC package configuration. Pin-to-pin compatibility is preserved across all alternatives.

Q: What is the difference between the package dimensions listed for different substitutes?

A: The 74VHC02SJ and SN74AHC02NSR use a 14-SOIC package with 0.209" width, while the 74AHC02D,118, SN74AHC02D, and SN74AHC02DR use a narrower 14-SOIC package with 0.154" width. PCB layout and footprint compatibility must be verified before substitution, as the narrower package may not fit existing 0.209" footprints without modification.

Q: Does the extended operating temperature range of the substitutes affect compatibility?

A: No. The substitutes' extended temperature range (-40°C to 125°C) exceeds the original specification (-40°C to 85°C), providing additional operational margin. Applications designed for the original temperature range will operate within the substitute's specifications.

Q: Are there compliance or certification differences between the substitutes?

A: The Texas Instruments parts (SN74AHC02NSR, SN74AHC02D, SN74AHC02DR) carry ROHS3 compliance certification. The NXP part (74AHC02D,118) does not specify RoHS status in the provided data. All parts maintain MSL 1 (Unlimited) moisture sensitivity ratings and REACH Unaffected status.

Q: Which substitute offers the best propagation delay performance?

A: The 74AHC02D,118 (NXP) and the original 74VHC02SJ both specify 7.5ns maximum propagation delay at 5V with 50pF load. The Texas Instruments substitutes (SN74AHC02NSR, SN74AHC02D, SN74AHC02DR) specify 8.5ns, representing a 1ns increase in propagation delay.

Q: What packaging options are available for the recommended substitutes?

A: SN74AHC02NSR is supplied in Tape & Reel format. SN74AHC02DR is available in Cut Tape and Digi-Reel packaging. The 74AHC02D,118 packaging format is not specified in the provided data.