CD74HC02MT NOR Gate IC Equivalent & Substitute Parts

Part Overview

The CD74HC02MT is a 4-channel NOR gate logic IC manufactured by Texas Instruments in a 14-SOIC surface mount package. This part is discontinued at DiGi Electronics, making equivalent substitutes necessary for ongoing design and production requirements. The CD74HC02MT operates across a 2V to 6V supply voltage range and is suitable for general-purpose logic applications requiring NOR gate functionality with standard propagation delay characteristics.

Key Parameters

Parameter	Value
Logic Type	NOR Gate
Number of Circuits	4
Number of Inputs	2
Voltage - Supply	2V ~ 6V
Current - Quiescent (Max)	2 µA
Current - Output High, Low	5.2mA, 5.2mA
Input Logic Level - Low	0.5V ~ 1.8V
Input Logic Level - High	1.5V ~ 4.2V
Max Propagation Delay @ 6V, 50pF	15ns
Operating Temperature	-55°C ~ 125°C
Package / Case	14-SOIC (0.154", 3.90mm Width)
Mounting Type	Surface Mount
RoHS Status	ROHS3 Compliant
Moisture Sensitivity Level (MSL)	1 (Unlimited)

Substitute Part Grouping Explanation

Substitution of the CD74HC02MT is determined by strict equivalence across the following parameters: logic type (NOR gate), number of circuits (4), number of inputs (2), supply voltage range (2V ~ 6V), output current capability (5.2mA), input logic levels, package type (14-SOIC), and mounting type (surface mount). All substitute parts listed maintain these core electrical and mechanical specifications, ensuring functional interchangeability in circuit designs.

Substitute parts are grouped by manufacturer and product status. Parametric equivalents from Texas Instruments and onsemi maintain identical electrical performance. Manufacturer-recommended alternatives from Nexperia USA Inc. and onsemi provide active production status with full compliance certifications. Operating temperature range variations and propagation delay differences are noted where they occur but do not prevent substitution when application requirements permit.

Parameter Comparison

Manufacturer Part Number	Manufacturer	Product Status	Voltage - Supply	Current - Quiescent (Max)	Max Propagation Delay @ 6V, 50pF	Operating Temperature	Package / Case	Packaging Type
CD74HC02MT	Texas Instruments	Discontinued at DiGi Electronics	2V ~ 6V	2 µA	15ns	-55°C ~ 125°C	14-SOIC	Cut Tape (CT) & Digi-Reel®
CD74HC02M96	Texas Instruments	Active	2V ~ 6V	2 µA	15ns	-55°C ~ 125°C	14-SOIC	Cut Tape (CT) & Digi-Reel®
MC74HC02ADR2G	onsemi	Active	2V ~ 6V	1 µA	13ns	-55°C ~ 125°C	14-SOIC	Cut Tape (CT) & Digi-Reel®
74HC02D,653	Nexperia USA Inc.	Active	2V ~ 6V	2 µA	15ns	-40°C ~ 125°C	14-SOIC	Cut Tape (CT) & Digi-Reel®
74HC02D-Q100,118	Nexperia USA Inc.	Active	2V ~ 6V	2 µA	15ns	-40°C ~ 125°C	14-SOIC	Tape & Reel (TR)
MC74HC02ADG	onsemi	Active	2V ~ 6V	1 µA	13ns	-55°C ~ 125°C	14-SOIC	Tube
MM74HC02M	Fairchild Semiconductor	Active	2V ~ 6V	2 µA	15ns	-40°C ~ 85°C	14-SOIC	Not specified
MM74HC02MX	onsemi	Active	2V ~ 6V	2 µA	15ns	-40°C ~ 85°C	14-SOIC	Cut Tape (CT) & Digi-Reel®
NLV74HC02ADR2G	onsemi	Obsolete	2V ~ 6V	1 µA	19ns	-55°C ~ 125°C	14-SOIC	Not specified

Engineering Selection Recommendations

For applications requiring immediate replacement of the discontinued CD74HC02MT, the CD74HC02M96 from Texas Instruments is the primary parametric equivalent, maintaining identical electrical specifications and operating temperature range while offering active product status.

The MC74HC02ADR2G from onsemi provides superior performance characteristics with lower quiescent current (1 µA vs. 2 µA) and faster propagation delay (13ns vs. 15ns), suitable for power-sensitive or timing-critical applications. This part maintains the full operating temperature range of -55°C to 125°C.

For high-volume production requiring automotive qualification, the 74HC02D-Q100,118 from Nexperia USA Inc. offers AEC-Q100 certification with Tape & Reel packaging. The standard 74HC02D,653 variant from the same manufacturer provides equivalent performance in Cut Tape packaging for general applications.

The MM74HC02M and MM74HC02MX variants from Fairchild Semiconductor and onsemi respectively are suitable for applications with reduced temperature range requirements (-40°C to 85°C). The MM74HC02MX offers superior inventory availability with Cut Tape & Digi-Reel packaging.

The NLV74HC02ADR2G from onsemi is obsolete and should not be selected for new designs despite its automotive qualification.

Frequently Asked Questions (FAQ)

Q: Can I directly replace CD74HC02MT with CD74HC02M96?

A: Yes. Both parts are manufactured by Texas Instruments and maintain identical electrical parameters, operating temperature range, and 14-SOIC package specifications. The CD74HC02M96 is the direct active equivalent.

Q: What is the difference between MC74HC02ADR2G and the Texas Instruments variants?

A: The MC74HC02ADR2G from onsemi exhibits lower quiescent current (1 µA vs. 2 µA) and faster propagation delay (13ns vs. 15ns). Both characteristics represent performance improvements. All other electrical parameters remain equivalent, and the 14-SOIC package is identical.

Q: Are the Nexperia 74HC02D variants compatible with CD74HC02MT?

A: Yes, electrically compatible. The 74HC02D,653 and 74HC02D-Q100,118 maintain the same logic function, supply voltage, output current, and package type. The operating temperature range is -40°C to 125°C versus -55°C to 125°C for the original part. Select based on your application's minimum operating temperature requirement.

Q: What packaging options are available for substitutes?

A: Substitute parts are available in Cut Tape (CT) & Digi-Reel®, Tape & Reel (TR), and Tube packaging. The 74HC02D-Q100,118 is supplied in Tape & Reel format for automated assembly. MC74HC02ADG is available in Tube packaging. Select packaging based on your procurement and assembly process requirements.

Q: Can I use MM74HC02M or MM74HC02MX if my application operates below -40°C?

A: No. Both Fairchild and onsemi MM74HC02 variants specify a minimum operating temperature of -40°C. For applications requiring operation at -55°C, select CD74HC02M96, MC74HC02ADR2G, MC74HC02ADG, or 74HC02D,653.

Q: Is the NLV74HC02ADR2G suitable for new designs?

A: No. This part is marked as obsolete and should not be selected for new product development. Use active alternatives such as MC74HC02ADR2G or 74HC02D,653 instead.

Q: Do all substitute parts meet RoHS3 compliance?

A: Most active substitutes are ROHS3 compliant. Verify compliance documentation for MM74HC02M, which does not specify RoHS status in available data. All other active parts listed are confirmed ROHS3 compliant.

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