74HCT03D/AUJ NAND Gate IC Equivalent & Substitute Parts

Part Overview

The 74HCT03D/AUJ is a NAND Gate IC manufactured by NXP USA Inc., featuring 4 channels with 2 inputs per channel and open drain output configuration. This logic component operates within the 74HCT series and is classified as an active product. The device is housed in a 14-SOIC surface mount package and is ROHS3 compliant with unlimited moisture sensitivity rating.

Equivalent and substitute parts are identified based on matching electrical characteristics, package specifications, and functional parameters that ensure direct interchangeability in circuit applications.

Key Parameters

Parameter	Specification
Logic Type	NAND Gate
Number of Circuits	4
Number of Inputs	2
Features	Open Drain
Voltage - Supply	4.5V ~ 5.5V
Current - Quiescent (Max)	2 µA
Current - Output High, Low	-, 4mA
Input Logic Level - Low	0.8V
Input Logic Level - High	2V
Max Propagation Delay @ V, Max CL	24ns @ 4.5V, 50pF
Operating Temperature	-40°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

Substitute parts for the 74HCT03D/AUJ are qualified based on the following criteria:

Electrical Parameter Matching:

Logic Type: NAND Gate (4 channels, 2 inputs)
Open Drain output configuration
Supply voltage range: 4.5V ~ 5.5V
Quiescent current: 2 µA maximum
Output current: 4mA maximum
Input logic levels: Low 0.8V, High 2V
Propagation delay: 24ns @ 4.5V, 50pF

Mechanical Parameter Matching:

Package: 14-SOIC (0.154", 3.90mm Width)
Mounting Type: Surface Mount
Base Product Number: 74HCT03

Compliance Matching:

RoHS3 Compliant
Moisture Sensitivity Level 1 (Unlimited)
REACH Unaffected
ECCN: EAR99

All identified substitute parts maintain identical electrical performance and mechanical compatibility with the main part number.

Parameter Comparison

Parameter	74HCT03D/AUJ (NXP USA Inc.)	74HCT03D,653 (Nexperia USA Inc.)	74HCT03D-Q100J (Nexperia USA Inc.)
Logic Type	NAND Gate	NAND Gate	NAND Gate
Number of Circuits	4	4	4
Number of Inputs	2	2	2
Features	Open Drain	Open Drain	Open Drain
Voltage - Supply	4.5V ~ 5.5V	4.5V ~ 5.5V	4.5V ~ 5.5V
Current - Quiescent (Max)	2 µA	2 µA	2 µA
Current - Output High, Low	-, 4mA	-, 4mA	-, 4mA
Input Logic Level - Low	0.8V	0.8V	0.8V
Input Logic Level - High	2V	2V	2V
Max Propagation Delay @ V, Max CL	24ns @ 4.5V, 50pF	24ns @ 4.5V, 50pF	24ns @ 4.5V, 50pF
Operating Temperature	-40°C ~ 125°C	-40°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)
Mounting Type	Surface Mount	Surface Mount	Surface Mount
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant
Moisture Sensitivity Level (MSL)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)
Grade	Standard	Standard	Automotive
Qualification	-	-	AEC-Q100

Engineering Selection Recommendations

74HCT03D,653 (Nexperia USA Inc.): This part is a parametric equivalent with identical electrical and mechanical specifications. It maintains active product status and full ROHS3 compliance. The primary distinction is packaging format (Tape & Reel) and manufacturer source. Selection is appropriate for standard industrial applications requiring equivalent performance.

74HCT03D-Q100J (Nexperia USA Inc.): This part is a parametric equivalent with automotive-grade qualification (AEC-Q100). All electrical and mechanical parameters match the main part. The automotive qualification and grade designation indicate suitability for automotive applications and environments with enhanced reliability requirements. Selection is appropriate for automotive and mission-critical applications where AEC-Q100 qualification is specified or required.

All three parts are active products with ROHS3 compliance and unlimited moisture sensitivity rating, ensuring regulatory compliance across standard and automotive applications.

Frequently Asked Questions (FAQ)

Q: Can 74HCT03D,653 be used as a direct replacement for 74HCT03D/AUJ?

A: Yes. Both parts are parametric equivalents with identical electrical characteristics, open drain configuration, supply voltage range (4.5V ~ 5.5V), quiescent current (2 µA), output current (4mA), input logic levels, propagation delay (24ns @ 4.5V, 50pF), and operating temperature range (-40°C ~ 125°C). Both are housed in 14-SOIC surface mount packages and are ROHS3 compliant. The primary difference is packaging format and manufacturer source.

Q: What is the difference between 74HCT03D-Q100J and the other substitute parts?

A: The 74HCT03D-Q100J carries automotive-grade qualification (AEC-Q100) and is designated as an automotive-grade component. All electrical and mechanical parameters are identical to the other parts. This qualification indicates the part meets automotive industry reliability and testing standards. Selection of this part is appropriate when automotive-grade components are specified or required by application standards.

Q: Are all substitute parts compatible with the same PCB footprint?

A: Yes. All parts use the 14-SOIC (0.154", 3.90mm Width) package with surface mount mounting type. PCB footprints and land patterns are identical across all three parts, enabling direct board-level substitution without layout modifications.

Q: What compliance certifications apply to these parts?

A: All three parts are ROHS3 compliant, REACH unaffected, and classified under ECCN EAR99. The 74HCT03D-Q100J additionally carries AEC-Q100 automotive qualification. All parts have Moisture Sensitivity Level 1 (Unlimited), indicating no moisture sensitivity restrictions.

Q: Can these parts be used interchangeably in high-speed logic circuits?

A: Yes. All parts maintain identical propagation delay specifications of 24ns @ 4.5V with 50pF load. Timing performance is equivalent across all three part numbers, enabling interchangeable use in circuits with identical timing requirements.

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