74HC02D/AUJ NOR Gate IC Equivalent & Substitute Parts

Part Overview

The 74HC02D/AUJ is a 4-channel 2-input NOR gate logic IC manufactured by Nexperia USA Inc. in a 14-SOIC surface mount package. This component is classified as an active product and is ROHS3 compliant. The 74HC02 series represents a standard logic gate function widely used in digital circuit design. Substitute parts are identified based on matching logic function, electrical performance parameters, and package compatibility to ensure direct functional replacement in circuit applications.

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	-40°C ~ 125°C
Package / Case	14-SOIC (0.154", 3.90mm Width)
RoHS Status	ROHS3 Compliant
Moisture Sensitivity Level (MSL)	1 (Unlimited)

Substitute Part Grouping Explanation

Substitution of the 74HC02D/AUJ is determined by the following criteria:

Primary Substitution Parameters:

Logic function: 4-channel 2-input NOR gate
Supply voltage range: 2V ~ 6V
Output current capability: 5.2mA minimum
Propagation delay: 15ns maximum at 6V, 50pF load
Package type: 14-SOIC surface mount
Operating temperature range: -40°C ~ 125°C minimum

Packaging Variants: Substitute parts may differ in packaging format (Cut Tape, Digi-Reel, or Tape & Reel) without affecting functional compatibility, as these represent distribution methods only.

Automotive Grade Variants: Parts qualified to AEC-Q100 automotive standards are functionally compatible with standard industrial-grade equivalents when electrical parameters remain within specification.

Manufacturer Variants: Parts from different manufacturers (Nexperia, Texas Instruments, onsemi) are substitutable when all electrical and thermal parameters match or exceed the main part specifications.

Parameter Comparison

Parameter	74HC02D/AUJ (Main)	74HC02D,653	74HC02D-Q100,118	NLV74HC02ADR2G	SN74HC02QDRQ1
Manufacturer	Nexperia USA Inc.	Nexperia USA Inc.	Nexperia USA Inc.	onsemi	Texas Instruments
Logic Type	NOR Gate	NOR Gate	NOR Gate	NOR Gate	NOR Gate
Number of Circuits	4	4	4	4	4
Number of Inputs	2	2	2	2	2
Voltage - Supply	2V ~ 6V	2V ~ 6V	2V ~ 6V	2V ~ 6V	2V ~ 6V
Current - Quiescent (Max)	2 µA	2 µA	2 µA	1 µA	2 µA
Current - Output High, Low	5.2mA, 5.2mA	5.2mA, 5.2mA	5.2mA, 5.2mA	5.2mA, 5.2mA	5.2mA, 5.2mA
Input Logic Level - Low	0.5V ~ 1.8V	0.5V ~ 1.8V	0.5V ~ 1.8V	0.5V ~ 1.8V	0.5V ~ 1.8V
Input Logic Level - High	1.5V ~ 4.2V	1.5V ~ 4.2V	1.5V ~ 4.2V	1.5V ~ 4.2V	1.5V ~ 4.2V
Max Propagation Delay @ 6V, 50pF	15ns	15ns	15ns	19ns	15ns
Operating Temperature	-40°C ~ 125°C	-40°C ~ 125°C	-40°C ~ 125°C	-55°C ~ 125°C	-40°C ~ 125°C
Package / Case	14-SOIC (0.154", 3.90mm Width)	14-SOIC (0.154", 3.90mm Width)	14-SOIC (0.154", 3.90mm Width)	14-SOIC (0.154", 3.90mm Width)	14-SOIC (0.154", 3.90mm Width)
Product Status	Active	Active	Active	Obsolete	Active
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant
Automotive Grade	Standard	Standard	AEC-Q100	AEC-Q100	AEC-Q100

Engineering Selection Recommendations

74HC02D,653 (Nexperia USA Inc.): This part is a parametric equivalent with identical electrical specifications and active product status. The primary difference is packaging format (Cut Tape & Digi-Reel versus standard packaging). Selection is appropriate for applications requiring high-volume tape and reel distribution.

74HC02D-Q100,118 (Nexperia USA Inc.): This variant includes AEC-Q100 automotive qualification and is suitable for automotive applications requiring automotive-grade components. Electrical parameters are identical to the main part. Product status is active.

NLV74HC02ADR2G (onsemi): This part is functionally compatible with identical electrical parameters across all critical specifications. However, product status is listed as obsolete, indicating discontinued manufacturing. Selection should be limited to applications where existing inventory is available and long-term supply is not required. The extended operating temperature range (-55°C ~ 125°C) provides additional thermal margin compared to the main part.

SN74HC02QDRQ1 (Texas Instruments): This part is a parametric equivalent from an alternative manufacturer with identical electrical specifications and active product status. AEC-Q100 automotive qualification is included. Selection is appropriate for applications requiring automotive-grade components or where Texas Instruments supply chain preference exists.

Frequently Asked Questions (FAQ)

Q: Can I substitute 74HC02D,653 for 74HC02D/AUJ in my circuit?

A: Yes. The 74HC02D,653 is a parametric equivalent with identical electrical specifications, supply voltage range, output current capability, propagation delay, and operating temperature range. The difference is packaging format (Cut Tape & Digi-Reel distribution). Functional compatibility is complete.

Q: What is the difference between standard and AEC-Q100 qualified versions?

A: AEC-Q100 qualification indicates the part meets automotive industry reliability and testing standards. The 74HC02D-Q100,118 and SN74HC02QDRQ1 include this qualification. Electrical parameters remain identical to standard versions. Selection of automotive-qualified parts is required for automotive applications; standard parts are suitable for industrial and consumer applications.

Q: Why is NLV74HC02ADR2G listed as obsolete?

A: Product status reflects current manufacturing status from the supplier. Obsolete designation indicates the part is no longer in active production. Existing inventory may be available, but long-term supply cannot be guaranteed. This part should be selected only when existing stock is confirmed and alternative active parts are not suitable.

Q: Are all substitute parts pin-compatible with the main part?

A: Yes. All listed substitute parts use the 14-SOIC package with identical pin configuration and spacing (0.154", 3.90mm width). Direct PCB footprint compatibility is confirmed.

Q: What is the significance of the 19ns propagation delay in the NLV74HC02ADR2G?

A: The NLV74HC02ADR2G has a maximum propagation delay of 19ns at 6V with 50pF load, compared to 15ns for other parts. This represents a 4ns difference and may be significant in timing-critical applications. For applications with strict timing requirements, parts with 15ns specification are preferred.

Q: Can I use these parts interchangeably in high-temperature applications?

A: All parts support the -40°C ~ 125°C operating range except NLV74HC02ADR2G, which extends to -55°C. For applications requiring operation below -40°C, NLV74HC02ADR2G provides additional thermal margin. For standard industrial temperature ranges, all parts are equivalent.

Request Quote (Ships tomorrow)

Part Number

Quantity

Company

Contact Name

E-mail

Message