74AHCT02PW,112 NOR Gate IC Equivalent & Substitute Parts

Part Overview

The 74AHCT02PW,112 is a 4-channel 2-input NOR gate logic IC manufactured by Nexperia USA Inc. in a 14-TSSOP surface mount package. This component is classified as obsolete, making equivalent and substitute parts necessary for ongoing design support and procurement continuity. The part operates within the 4.5V to 5.5V supply voltage range and is suitable for general-purpose logic applications requiring NOR gate functionality.

Substiute Parts

74AHCT02PW,112

Nexperia USA Inc.In Stock: 79174AHCT02PW,112 Datasheet

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MC74VHCT02ADTR2G

onsemiIn Stock: 3515MC74VHCT02ADTR2G Datasheet

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SN74AHCT02DBR

Texas InstrumentsIn Stock: 4835SN74AHCT02DBR Datasheet

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SN74AHCT02DGVR

Texas InstrumentsIn Stock: 4166SN74AHCT02DGVR Datasheet

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SN74AHCT02PW

Texas InstrumentsIn Stock: 1810SN74AHCT02PW Datasheet

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SN74AHCT02PWR

Texas InstrumentsIn Stock: 4634SN74AHCT02PWR Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the 74AHCT02PW,112 is determined by the following criteria:

Electrical Compatibility Requirements:

• Logic Type: NOR Gate (4 channels, 2 inputs per channel)
• Voltage - Supply: 4.5V ~ 5.5V
• Current - Quiescent (Max): 2 µA
• Current - Output High, Low: 8mA, 8mA
• Input Logic Level - Low: 0.8V
• Input Logic Level - High: 2V
• Max Propagation Delay @ 5V, 50pF: 7.5ns
• Operating Temperature Range: -40°C minimum to 85°C or higher

Mechanical Compatibility Requirements:

• Mounting Type: Surface Mount
• Package options: 14-TSSOP, 14-SSOP, or 14-TVSOP (all 0.173" to 0.209" width variants)

Compliance Requirements:

• RoHS3 Compliant
• MSL: 1 (Unlimited)

All substitute parts listed meet these electrical and mechanical parameters. Variations in operating temperature maximum (85°C vs. 125°C) and packaging format (TSSOP, SSOP, TVSOP) are noted but do not affect functional substitution within standard industrial applications.

Parameter Comparison

Engineering Selection Recommendations

Primary Recommendation - Direct Electrical and Package Match: SN74AHCT02PWR (Texas Instruments) is the preferred substitute. It maintains identical electrical specifications, the same 14-TSSOP package footprint, and carries Active product status with full availability. This part requires no design modifications and provides the most direct replacement path.

Alternative with Same Series and Package: MC74VHCT02ADTR2G (onsemi) offers equivalent electrical performance in the same 14-TSSOP package. The 74VHCT series is functionally compatible with 74AHCT logic. This part is Active and widely available.

Package Variant Options: SN74AHCT02DBR (14-SSOP) and SN74AHCT02DGVR (14-TVSOP) provide substitution for applications where alternative package footprints are acceptable. Both are Texas Instruments products with Active status. PCB layout modifications are required for these variants due to different package dimensions.

Compliance and Certification: All substitute parts maintain ROHS3 compliance, MSL Level 1 (Unlimited), and EAR99 export classification, matching the original part's regulatory status.

Frequently Asked Questions (FAQ)

Q: Can I use SN74AHCT02PWR as a direct replacement for 74AHCT02PW,112? A: Yes. Both parts share identical electrical specifications, supply voltage range (4.5V ~ 5.5V), propagation delay (7.5ns @ 5V, 50pF), and 14-TSSOP package footprint. No circuit modifications are required. SN74AHCT02PWR is currently Active and recommended for new designs.

Q: What is the difference between the 74AHCT and 74VHCT series? A: Both series are compatible NOR gate logic families with identical electrical parameters for this application. The 74VHCT series (MC74VHCT02ADTR2G) is manufactured by onsemi, while 74AHCT variants are available from Texas Instruments and Nexperia. Functional substitution is valid between series when electrical specifications match.

Q: Why do some substitute parts have a maximum operating temperature of 85°C instead of 125°C? A: The original 74AHCT02PW,112 specifies -40°C ~ 125°C, while most active substitutes specify -40°C ~ 85°C. This difference reflects current manufacturing specifications. For applications operating within the -40°C ~ 85°C range, all listed substitutes are fully qualified. Applications requiring operation above 85°C should retain the original part or verify thermal requirements with the manufacturer.

Q: Can I use SN74AHCT02DBR (14-SSOP) or SN74AHCT02DGVR (14-TVSOP) instead of the 14-TSSOP package? A: Electrically, yes. However, these parts use different package footprints (14-SSOP is 0.209" wide; 14-TVSOP is 0.173" wide compared to 14-TSSOP at 0.173"). PCB layout and land pattern modifications are required. Use these variants only if your design can accommodate the alternative package geometry.

Q: Are all substitute parts RoHS3 compliant? A: Yes. All listed substitute parts carry ROHS3 compliance certification and MSL Level 1 (Unlimited) moisture sensitivity rating, matching the original part's environmental and regulatory status.

Q: What is the difference between Tape & Reel (TR) and Tube packaging? A: Tape & Reel packaging is standard for high-volume automated assembly. Tube packaging is used for lower-volume or manual assembly applications. Both contain the same die and electrical specifications. Select based on your procurement and assembly process requirements.