SN74AHCT02D Equivalent & Substitute Parts

Part Overview

The SN74AHCT02D is a 4-channel NOR gate logic IC manufactured by Texas Instruments in 14-SOIC surface mount packaging. This device implements four independent 2-input NOR gates with AHCT-series logic levels and is currently designated as Last Time Buy status. Finding equivalent and substitute parts is necessary due to product lifecycle discontinuation and to ensure design flexibility for procurement across different manufacturers and packaging formats.

Substiute Parts

SN74AHCT02D

Texas InstrumentsIn Stock: 2414SN74AHCT02D Datasheet

Current PartRFQ

SN74AHCT02DR

Texas InstrumentsIn Stock: 5297SN74AHCT02DR Datasheet

MFR RecommendedRFQ

74AHCT02D,118

Nexperia USA Inc.In Stock: 315874AHCT02D,118 Datasheet

UpgradeRFQ

74VHCT02D,118

NXP USA Inc.In Stock: 573074VHCT02D,118 Datasheet

UpgradeRFQ

74AHCT02D-Q100J

Nexperia USA Inc.In Stock: 95974AHCT02D-Q100J Datasheet

MFR RecommendedRFQ

74VHCT02D-Q100J

Nexperia USA Inc.In Stock: 118274VHCT02D-Q100J Datasheet

MFR RecommendedRFQ

SN74AHCT02DG4

Texas InstrumentsIn Stock: 927SN74AHCT02DG4 Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the SN74AHCT02D is determined by strict equivalence across the following critical parameters:

• Logic function: 4-channel NOR gate with 2 inputs per channel
• Electrical specifications: 4.5V ~ 5.5V supply voltage, 7.5ns propagation delay, 8mA output current
• Input/output logic levels: 0.8V low threshold, 2V high threshold
• Mounting type: Surface mount in 14-pin SOIC package footprint
• Environmental compliance: ROHS3 compliance, MSL 1 rating

Substitute parts are grouped into three categories based on manufacturer designation and product status:

MFR Recommended Substitutes: Parts actively recommended by manufacturers as direct replacements with identical electrical performance and packaging compatibility.

Upgrade Substitutes: Parts offering extended operating temperature range (-40°C ~ 125°C) or automotive-grade qualification (AEC-Q100), suitable for applications requiring enhanced reliability or wider temperature operation.

Parametric Equivalents: Parts with identical electrical and functional specifications but different packaging formats (Tape & Reel vs. Tube), available for high-volume procurement scenarios.

Parameter Comparison

Engineering Selection Recommendations

For Standard Industrial Applications: SN74AHCT02DR (Texas Instruments, Active status) provides direct electrical and functional equivalence with identical -40°C ~ 85°C operating range. This part is actively manufactured and represents the primary recommended substitute for the Last Time Buy SN74AHCT02D.

For Extended Temperature Range Requirements: 74AHCT02D,118 (Nexperia) or 74VHCT02D,118 (NXP) extend the upper operating temperature to 125°C while maintaining all electrical specifications. Both parts are in Active status and suitable for applications requiring wider thermal operation.

For Automotive Applications: 74AHCT02D-Q100J or 74VHCT02D-Q100J (Nexperia) provide AEC-Q100 automotive qualification with extended temperature range (-40°C ~ 125°C). These parts are required for automotive-grade designs and carry ROHS3 compliance with MSL 1 rating.

For Packaging Format Flexibility: SN74AHCT02DG4 (Texas Instruments, Tube packaging) offers parametric equivalence to the original part. 74AHCT02D,118 and 74VHCT02D,118 are available in Tape & Reel format for high-volume procurement scenarios.

All substitute parts maintain identical logic function, electrical performance, and 14-SOIC package footprint compatibility with the original SN74AHCT02D.

Frequently Asked Questions (FAQ)

Q: Can SN74AHCT02DR be used as a direct replacement for SN74AHCT02D?

A: Yes. SN74AHCT02DR is electrically and functionally identical to SN74AHCT02D. The primary difference is packaging format: SN74AHCT02DR is supplied in Tape & Reel format while SN74AHCT02D is supplied in Tube. Both operate at -40°C ~ 85°C and are pin-compatible in 14-SOIC packages.

Q: What is the difference between 74AHCT02D,118 and 74VHCT02D,118?

A: Both parts are functionally equivalent NOR gate ICs with identical electrical specifications and extended operating temperature (-40°C ~ 125°C). The primary difference is manufacturer: 74AHCT02D,118 is manufactured by Nexperia USA Inc., while 74VHCT02D,118 is manufactured by NXP USA Inc. The 74VHCT series designation indicates a different logic family variant, though electrical performance remains equivalent for this application.

Q: Are automotive-grade parts (AEC-Q100) required for my application?

A: AEC-Q100 qualification is required only for automotive applications. For standard industrial or consumer applications, standard-grade parts (SN74AHCT02DR, 74AHCT02D,118, or 74VHCT02D,118) are appropriate. Automotive-grade parts (74AHCT02D-Q100J, 74VHCT02D-Q100J) carry additional qualification and testing but are not necessary for non-automotive designs.

Q: Why is the SN74AHCT02D marked as Last Time Buy?

A: Last Time Buy status indicates the manufacturer is discontinuing production. Existing inventory remains available, but no new production runs are planned. Substitution to an Active status part (such as SN74AHCT02DR) is recommended for new designs or long-term procurement planning.

Q: Are all substitute parts ROHS3 compliant?

A: Yes. All substitute parts listed are ROHS3 compliant with MSL 1 (Unlimited) moisture sensitivity level, matching the environmental compliance of the original SN74AHCT02D.

Q: Can I use 74AHCT02D,118 or 74VHCT02D,118 in applications limited to -40°C ~ 85°C?

A: Yes. Parts rated for -40°C ~ 125°C can be used in applications with narrower temperature ranges. The extended temperature rating provides additional design margin and does not restrict use in standard temperature applications.