74HCT03N,652 Equivalent & Substitute Parts

Part Overview

The 74HCT03N,652 is a NAND Gate IC featuring 4 channels with 2 inputs per channel and open drain output configuration, housed in a 14-DIP package. Manufactured by NXP USA Inc., this component operates within the 74HCT logic series and is classified as obsolete. Due to its obsolete status and limited availability from the original manufacturer, identifying functionally equivalent substitute parts is essential for design continuity and procurement flexibility.

Substiute Parts

74HCT03N,652

NXP USA Inc.In Stock: 103174HCT03N,652 Datasheet

Current PartRFQ

CD74HCT03E

Harris CorporationIn Stock: 2068CD74HCT03E Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitution of the 74HCT03N,652 is determined by strict equivalence across the following critical parameters:

• Logic Type: NAND Gate (4 channels, 2 inputs per channel)
• Features: Open Drain output configuration
• Voltage Supply Range: 4.5V ~ 5.5V
• Input Logic Levels: Low 0.8V, High 2V
• Output Current: 4mA maximum
• Propagation Delay: 24ns @ 4.5V, 50pF
• Package Type: 14-DIP form factor
• Base Series: 74HCT03

The CD74HCT03E manufactured by Harris Corporation meets all functional and electrical requirements for direct substitution. Both parts share identical logic configuration, electrical characteristics, and physical packaging, enabling pin-for-pin replacement in circuit applications.

Parameter Comparison

Engineering Selection Recommendations

The CD74HCT03E serves as a direct functional equivalent to the 74HCT03N,652. Both components are classified as obsolete products, indicating limited future availability from original sources. The CD74HCT03E offers an extended lower operating temperature limit (-55°C versus -40°C), providing broader environmental compatibility for applications requiring enhanced cold-temperature performance.

Compliance considerations differ between the two parts: the 74HCT03N,652 maintains RoHS3 compliance status, while the CD74HCT03E is RoHS non-compliant. Design teams must evaluate regulatory requirements for their specific applications when selecting between these alternatives. Both parts carry identical ECCN (EAR99) and HTSUS (8542.39.0001) classifications.

Frequently Asked Questions (FAQ)

Q: Can the CD74HCT03E replace the 74HCT03N,652 in existing designs?

A: Yes. The CD74HCT03E is a direct pin-for-pin substitute. Both components feature identical logic configuration (4-channel NAND gate with 2 inputs), open drain output, electrical characteristics, and 14-DIP packaging. No circuit modifications are required.

Q: What is the difference in operating temperature range?

A: The 74HCT03N,652 operates from -40°C to 125°C, while the CD74HCT03E operates from -55°C to 125°C. The CD74HCT03E supports a wider lower temperature range, making it suitable for applications requiring enhanced cold-temperature performance.

Q: Are there compliance differences between these parts?

A: Yes. The 74HCT03N,652 is RoHS3 compliant, while the CD74HCT03E is RoHS non-compliant. Applications subject to RoHS regulations must use the 74HCT03N,652 or identify alternative compliant sources.

Q: Do both parts have identical electrical specifications?

A: Yes. Supply voltage (4.5V ~ 5.5V), quiescent current (2 µA max), output current (4mA), input logic levels (0.8V low, 2V high), and propagation delay (24ns @ 4.5V, 50pF) are identical across both components.

Q: What packaging format do these parts use?

A: Both the 74HCT03N,652 and CD74HCT03E use 14-DIP (Dual In-line Package) with 0.300" (7.62mm) pitch, enabling direct mechanical and electrical interchange on through-hole PCB designs.