MM74HC02SJX Equivalent & Substitute Parts

Part Overview

The MM74HC02SJX is a NOR Gate IC with 4 channels and 2 inputs per channel, manufactured by onsemi in a 14-SOP surface mount package. This part is classified as obsolete, making equivalent substitute parts necessary for ongoing design support and procurement. The 74HC02 logic gate family provides standardized NOR gate functionality across multiple manufacturers, enabling direct functional substitution when electrical and mechanical parameters align.

Substiute Parts

MM74HC02SJX

onsemiIn Stock: 776MM74HC02SJX Datasheet

Current PartRFQ

SN74HC02NSR

Texas InstrumentsIn Stock: 3485SN74HC02NSR Datasheet

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74HC02D,653

Nexperia USA Inc.In Stock: 99031174HC02D,653 Datasheet

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CD74HC02M96

Texas InstrumentsIn Stock: 7315CD74HC02M96 Datasheet

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CD74HC02MT

Texas InstrumentsIn Stock: 1226CD74HC02MT Datasheet

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SN74HC02D

Texas InstrumentsIn Stock: 1198SN74HC02D Datasheet

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SN74HC02DR

Texas InstrumentsIn Stock: 2161SN74HC02DR Datasheet

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SN74HC02DRG4

Texas InstrumentsIn Stock: 10819SN74HC02DRG4 Datasheet

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SN74HC02DT

Texas InstrumentsIn Stock: 936SN74HC02DT Datasheet

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SN74HC02QDRQ1

Texas InstrumentsIn Stock: 3302SN74HC02QDRQ1 Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitution of the MM74HC02SJX is determined by strict equivalence across the following criteria:

Functional Parameters (Must Match):

• Logic Type: NOR Gate
• Number of Circuits: 4
• Number of Inputs: 2 per circuit
• Voltage Supply Range: 2V ~ 6V minimum
• Current specifications: Quiescent ≤ 2 µA, Output ≤ 5.2mA
• Input Logic Levels: Low 0.5V ~ 1.8V, High 1.5V ~ 4.2V
• Propagation Delay: ≤ 15ns @ 6V, 50pF
• Base Product Number: 74HC02

Mechanical Parameters (Must Match or Exceed):

• Mounting Type: Surface Mount
• Package Family: 14-SOIC (pin-compatible)
• Operating Temperature: Minimum -40°C, Maximum ≥ 85°C

Acceptable Variations:

• Manufacturer: Any qualified source
• Packaging format: Tape & Reel, Cut Tape, or Tube
• Product Status: Active or Discontinued (electrical equivalence maintained)
• RoHS/REACH compliance: Acceptable if present

Parameter Comparison

Engineering Selection Recommendations

Primary Recommendation for Active Production: SN74HC02NSR (Texas Instruments) or SN74HC02DR (Texas Instruments) are the preferred substitutes. Both are active products with identical electrical specifications to the MM74HC02SJX, RoHS3 compliance, and continuous manufacturer support. SN74HC02NSR is supplied in Tape & Reel format; SN74HC02DR is supplied in Cut Tape & Digi-Reel format.

Extended Temperature Range Option: CD74HC02M96 (Texas Instruments) or 74HC02D,653 (Nexperia USA Inc.) extend the operating temperature range to -55°C ~ 125°C, providing margin for applications requiring enhanced thermal performance. Both are active products with RoHS3 compliance.

Automotive Grade Option: SN74HC02QDRQ1 (Texas Instruments) is qualified to AEC-Q100 automotive standards with -40°C ~ 125°C operating range, suitable for automotive and mission-critical applications.

Discontinued Parts (Secondary Options): SN74HC02D, SN74HC02DRG4, SN74HC02DT, and CD74HC02MT are electrically equivalent but discontinued at DiGi Electronics. These may be available through alternative distributors for legacy system support only.

Frequently Asked Questions (FAQ)

Q: Can I use any 74HC02 part number as a direct replacement for MM74HC02SJX? A: No. While all listed parts share the 74HC02 base product number and identical logic function, substitution requires matching the operating temperature range and package dimensions. The MM74HC02SJX operates -40°C ~ 85°C; extended-range parts (-55°C ~ 125°C) are compatible but not required unless your application demands lower minimum temperatures.

Q: What is the difference between the 14-SOIC packages listed (0.209" vs 0.154" width)? A: Both are 14-pin SOIC packages with identical pin pitch and electrical compatibility. The width difference (5.30mm vs 3.90mm) reflects different lead frame designs. Verify PCB footprint compatibility before substitution. Most modern designs accommodate both variants.

Q: Is the MM74HC02SJX pin-compatible with all listed substitutes? A: Yes. All parts use the 14-SOIC package with identical pin assignments for the 74HC02 logic gate function. Physical placement on the PCB is interchangeable.

Q: Why should I choose an active product over a discontinued one? A: Active products ensure long-term availability, consistent manufacturing quality, and manufacturer technical support. Discontinued parts may have limited stock and no guarantee of future supply.

Q: Does packaging format (Tape & Reel vs Cut Tape vs Tube) affect electrical performance? A: No. Packaging format affects only handling, storage, and assembly automation compatibility. Electrical specifications remain identical across all packaging formats for the same part number.

Q: Can I use SN74HC02QDRQ1 in non-automotive applications? A: Yes. The automotive qualification (AEC-Q100) indicates enhanced quality and reliability screening. This part is fully compatible with standard industrial and commercial applications and offers superior reliability margins.

Q: What compliance certifications apply to these substitutes? A: All listed active and recently discontinued parts are RoHS3 compliant and REACH unaffected. ECCN classification is EAR99 for all variants. Moisture Sensitivity Level is 1 (Unlimited) across all parts.