CD74HC4002PW NOR Gate IC Equivalent & Substitute Parts

Part Overview

The CD74HC4002PW is a 2-channel NOR gate logic IC in 14-TSSOP surface mount packaging, manufactured by Texas Instruments. This part is currently discontinued at DiGi Electronics, making substitute parts necessary for ongoing production and maintenance applications. The 74HC4002 base product series offers multiple equivalent variants across different manufacturers and packaging configurations, all maintaining identical functional and electrical characteristics for direct substitution in circuit designs.

Substiute Parts

CD74HC4002PW

Texas InstrumentsIn Stock: 1515CD74HC4002PW Datasheet

Current PartRFQ

CD74HC4002PWR

Texas InstrumentsIn Stock: 2588CD74HC4002PWR Datasheet

DirectRFQ

74HC4002DB,112

Nexperia USA Inc.In Stock: 104374HC4002DB,112 Datasheet

MFR RecommendedRFQ

74HC4002PW,118

Nexperia USA Inc.In Stock: 242874HC4002PW,118 Datasheet

MFR RecommendedRFQ

74HC4002PW-Q100,11

Nexperia USA Inc.In Stock: 111974HC4002PW-Q100,11 Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the CD74HC4002PW is determined by strict equivalence across the following critical parameters:

• Logic Function: All substitutes must be 2-channel NOR gates with 4 inputs
• Electrical Specifications: Voltage supply range, quiescent current, output current, input logic levels, and propagation delay must be identical
• Mounting Type: Surface mount configuration required
• Package Compatibility: 14-TSSOP or 14-SSOP packages are interchangeable at the functional level, though PCB layout considerations apply
• Compliance: RoHS3 compliance and MSL rating must match or exceed the original specification

The 74HC4002 base product number defines the functional equivalence class. All listed substitutes share this base designation and maintain identical electrical performance characteristics. Packaging differences (Tube vs. Tape & Reel) and manufacturer variants do not affect functional substitutability.

Parameter Comparison

Engineering Selection Recommendations

Primary Recommendation: CD74HC4002PWR (Texas Instruments, Active Status)

This part maintains identical electrical specifications to the original CD74HC4002PW while offering active product status and higher inventory availability. The Tape & Reel packaging is standard for production environments. Both parts use the 14-TSSOP package with identical dimensions.

Secondary Recommendation: 74HC4002PW,118 (Nexperia USA Inc., Active Status)

This Nexperia variant provides active product status with equivalent electrical performance. The 14-TSSOP package matches the original footprint. Operating temperature range is -40°C to 125°C, which is suitable for most industrial and commercial applications. Higher inventory availability supports production continuity.

Tertiary Recommendation: 74HC4002PW-Q100,11 (Nexperia USA Inc., Active Status, Automotive Grade)

This AEC-Q100 qualified variant is suitable for automotive and high-reliability applications. It maintains identical electrical specifications and 14-TSSOP packaging. The automotive qualification adds process and reliability assurance for demanding environments.

Not Recommended: 74HC4002DB,112 (Nexperia USA Inc., Obsolete Status)

Although functionally equivalent, this part carries obsolete product status. The 14-SSOP package has different dimensions (0.209" vs. 0.173" width) and may require PCB layout modifications. Avoid for new designs or long-term production.

Frequently Asked Questions (FAQ)

Q: Can I use 74HC4002PW,118 as a direct replacement for CD74HC4002PW?

A: Yes. Both parts are 2-channel NOR gates with identical electrical specifications, quiescent current, output current, input logic levels, and propagation delay. Both use 14-TSSOP packaging with matching footprints. The primary difference is manufacturer (Nexperia vs. Texas Instruments) and product status (Active vs. Discontinued).

Q: What is the difference between 14-TSSOP and 14-SSOP packaging?

A: Both are surface mount packages with 14 pins. The 14-TSSOP (Thin Shrink Small Outline Package) has a width of 0.173" (4.40mm), while the 14-SSOP (Shrink Small Outline Package) has a width of 0.209" (5.30mm). The 14-TSSOP is narrower and is the standard for modern designs. PCB layouts designed for 14-TSSOP are not compatible with 14-SSOP without modification.

Q: Why does CD74HC4002PWR have a higher operating temperature range than 74HC4002PW,118?

A: The CD74HC4002PWR operates from -55°C to 125°C, while 74HC4002PW,118 operates from -40°C to 125°C. Both ranges cover standard industrial and commercial temperature requirements. The extended lower temperature range of the Texas Instruments part provides additional margin for extreme cold environments. For most applications, the -40°C to 125°C range is sufficient.

Q: Is the automotive-qualified 74HC4002PW-Q100,11 compatible with non-automotive applications?

A: Yes. The AEC-Q100 qualification indicates enhanced reliability and process control. This part meets all electrical specifications of the standard 74HC4002 and can be used in any application requiring the NOR gate function. The automotive qualification does not restrict use to automotive applications.

Q: What is the significance of Tape & Reel versus Tube packaging?

A: Tape & Reel packaging is standard for automated assembly and high-volume production. Tube packaging is used for manual assembly or lower-volume applications. Both packaging types contain identical die and electrical performance. The choice depends on manufacturing process requirements, not functional compatibility.

Q: Can I substitute parts with different quiescent current specifications?

A: No. All listed substitutes maintain identical quiescent current specifications (2 µA maximum). This parameter is critical for low-power applications and battery-operated designs. Any deviation would require circuit re-evaluation.

Q: Are all substitutes RoHS3 compliant?

A: Yes. All listed parts carry ROHS3 Compliant status and MSL rating of 1 (Unlimited), meeting environmental and reliability standards for modern electronics manufacturing.