CD74HC02MG4 Equivalent & Substitute Parts

Part Overview

The CD74HC02MG4 is a 4-channel NOR gate logic IC manufactured by Texas Instruments in 14-SOIC surface mount packaging. This part is discontinued at DiGi Electronics, making equivalent substitute parts necessary for ongoing design and production requirements. The 74HC02 series provides standard logic gating functionality across industrial and commercial applications with supply voltage range of 2V to 6V and operating temperature range of -55°C to 125°C.

Substiute Parts

CD74HC02MG4

Texas InstrumentsIn Stock: 810CD74HC02MG4 Datasheet

Current PartRFQ

CD74HC02M96

Texas InstrumentsIn Stock: 7315CD74HC02M96 Datasheet

DirectRFQ

MC74HC02ADR2G

onsemiIn Stock: 7837MC74HC02ADR2G Datasheet

DirectRFQ

74HC02D,653

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

MFR RecommendedRFQ

74HC02D-Q100,118

Nexperia USA Inc.In Stock: 327974HC02D-Q100,118 Datasheet

MFR RecommendedRFQ

MC74HC02ADG

onsemiIn Stock: 2189MC74HC02ADG Datasheet

MFR RecommendedRFQ

MM74HC02M

Fairchild SemiconductorIn Stock: 3124MM74HC02M Datasheet

MFR RecommendedRFQ

MM74HC02MX

onsemiIn Stock: 16158MM74HC02MX Datasheet

MFR RecommendedRFQ

NLV74HC02ADR2G

onsemiIn Stock: 885NLV74HC02ADR2G Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the CD74HC02MG4 is determined by strict equivalence across the following critical parameters:

• Logic function: 4-channel NOR gate with 2 inputs per channel
• Electrical specifications: Supply voltage 2V–6V, quiescent current ≤2 µA, output current 5.2mA, input logic levels, and propagation delay characteristics
• Package type: 14-SOIC surface mount form factor
• Compliance: ROHS3 compliance and MSL rating

Substitute parts are grouped into two categories based on product status and operational temperature range:

Category A - Active Status, Full Temperature Range (-55°C to 125°C): CD74HC02M96, MC74HC02ADR2G, MC74HC02ADG

Category B - Active Status, Commercial Temperature Range (-40°C to 85°C): MM74HC02M, MM74HC02MX

Category C - Active Status with Automotive Qualification (-40°C to 125°C): 74HC02D,653, 74HC02D-Q100,118

Category D - Obsolete Status: NLV74HC02ADR2G

Parameter Comparison

Engineering Selection Recommendations

Primary Substitutes (Recommended for New Designs):

CD74HC02M96 and MC74HC02ADR2G are the preferred direct replacements. Both maintain active product status, full electrical equivalence to the original CD74HC02MG4, and identical 14-SOIC packaging. CD74HC02M96 matches the original quiescent current specification exactly at 2 µA. MC74HC02ADR2G offers improved propagation delay performance (13ns versus 15ns) with lower quiescent current (1 µA), making it suitable for power-sensitive applications.

Alternative Substitutes (Application-Dependent):

74HC02D,653 and 74HC02D-Q100,118 from Nexperia are active alternatives with automotive-grade qualification (AEC-Q100). These parts are suitable for applications requiring automotive-level reliability. Operating temperature range is limited to -40°C to 125°C, which excludes the lower temperature extreme of the original specification.

MM74HC02M and MM74HC02MX are suitable only for applications with operating temperature requirements not exceeding -40°C to 85°C. These parts are not appropriate for extended temperature range applications.

Obsolete Parts (Not Recommended):

NLV74HC02ADR2G is obsolete and should not be selected for new designs despite active inventory availability. Propagation delay specification (19ns) exceeds the original part's performance envelope.

Frequently Asked Questions (FAQ)

Q: Can I use MC74HC02ADR2G as a direct replacement for CD74HC02MG4?

A: Yes. MC74HC02ADR2G is electrically equivalent across all critical parameters: 4-channel NOR gate, 2V–6V supply, 14-SOIC package, and -55°C to 125°C operating temperature. The lower quiescent current (1 µA versus 2 µA) and faster propagation delay (13ns versus 15ns) represent performance improvements with no functional impact.

Q: What is the difference between 74HC02D,653 and 74HC02D-Q100,118?

A: Both are Nexperia 74HC02 variants with identical electrical specifications. The primary difference is packaging: 74HC02D,653 is supplied in Cut Tape & Digi-Reel format, while 74HC02D-Q100,118 is supplied in Tape & Reel format with AEC-Q100 automotive qualification. The operating temperature range for both is -40°C to 125°C, which is narrower than the original part's -55°C specification.

Q: Why is the operating temperature range important for substitution?

A: Operating temperature range defines the thermal environment in which the part functions reliably. The original CD74HC02MG4 operates from -55°C to 125°C. Substitutes with narrower ranges (such as -40°C to 85°C) are not suitable for applications requiring the full original temperature specification. Verify your application's temperature requirements before selecting a substitute.

Q: Can I use MM74HC02MX in place of CD74HC02MG4?

A: MM74HC02MX is electrically equivalent but has a restricted operating temperature range of -40°C to 85°C compared to the original -55°C to 125°C. Use this part only if your application operates within the -40°C to 85°C window.

Q: Is the 14-SOIC package identical across all substitute parts?

A: Yes. All substitute parts use the 14-SOIC (0.154", 3.90mm Width) surface mount package, ensuring mechanical and electrical compatibility with the original PCB layout. Packaging format (Cut Tape, Tube, Tape & Reel) affects supply and handling but does not impact electrical performance or board-level compatibility.

Q: Should I consider NLV74HC02ADR2G as a substitute?

A: No. NLV74HC02ADR2G is obsolete and exhibits degraded propagation delay performance (19ns versus 15ns). Active alternatives with superior or equivalent specifications are available.