CD74HC4002M NOR Gate IC Equivalent & Substitute Parts

Part Overview

The CD74HC4002M is a 2-channel NOR gate logic IC in 14-SOIC surface mount packaging, manufactured by Texas Instruments. This part is discontinued at DiGi Electronics, making substitute components necessary for ongoing production and maintenance applications. The CD74HC4002M operates across a 2V to 6V supply voltage range with low quiescent current and standard propagation delay characteristics typical of the 74HC logic family.

Key Parameters

Parameter	Value
Logic Type	NOR Gate
Number of Circuits	2
Number of Inputs	4
Voltage - Supply	2V ~ 6V
Current - Quiescent (Max)	2 µA
Current - Output High, Low	5.2mA, 5.2mA
Max Propagation Delay @ 6V, 50pF	17ns
Operating Temperature	-55°C ~ 125°C
Mounting Type	Surface Mount
Package / Case	14-SOIC (0.154", 3.90mm Width)
RoHS Status	ROHS3 Compliant

Substitute Part Grouping Explanation

Substitution of the CD74HC4002M is determined by the following critical parameters:

Logic Function: NOR gate with 2 channels and 4 inputs
Electrical Specifications: Supply voltage 2V ~ 6V, quiescent current 2 µA maximum, output current 5.2mA, propagation delay 17ns @ 6V/50pF
Package Compatibility: 14-SOIC surface mount package with 0.154" width (3.90mm)
Thermal Range: Operating temperature -40°C to -55°C minimum, 125°C maximum
Compliance: RoHS3 compliance and REACH unaffected status

All substitute parts listed maintain identical logic function, electrical performance within specified tolerances, and physical package dimensions. Packaging format (tube, bulk, tape & reel) and product status (active, obsolete, discontinued) do not affect functional interchangeability.

Parameter Comparison

Part Number	Manufacturer	Logic Type	Circuits / Inputs	Supply Voltage	Quiescent Current	Output Current	Propagation Delay	Temp Range	Package	Product Status	RoHS Status
CD74HC4002M	Texas Instruments	NOR Gate	2 / 4	2V ~ 6V	2 µA	5.2mA	17ns @ 6V, 50pF	-55°C ~ 125°C	14-SOIC	Discontinued	ROHS3
CD74HC4002M96	Harris Corporation	NOR Gate	2 / 4	2V ~ 6V	2 µA	5.2mA	17ns @ 6V, 50pF	-55°C ~ 125°C	14-SOIC	Obsolete	Non-compliant
74HC4002D,652	Nexperia USA Inc.	NOR Gate	2 / 4	2V ~ 6V	2 µA	5.2mA	17ns @ 6V, 50pF	-40°C ~ 125°C	14-SOIC	Obsolete	ROHS3
74HC4002D,653	NXP Semiconductors	NOR Gate	2 / 4	2V ~ 6V	2 µA	5.2mA	17ns @ 6V, 50pF	Not specified	14-SOIC	Active	ROHS3
74HC4002D-Q100,118	Nexperia USA Inc.	NOR Gate	2 / 4	2V ~ 6V	2 µA	5.2mA	17ns @ 6V, 50pF	-40°C ~ 125°C	14-SOIC	Active	ROHS3

Engineering Selection Recommendations

Primary Recommendation: 74HC4002D-Q100,118 (Nexperia USA Inc.)

This part is actively manufactured, RoHS3 compliant, and carries AEC-Q100 automotive qualification. It provides the highest availability and regulatory compliance for new designs and production continuity.

Secondary Recommendation: 74HC4002D,653 (NXP Semiconductors)

This part maintains active production status and RoHS3 compliance. It is suitable for applications where automotive qualification is not required.

Alternative for Legacy Systems: 74HC4002D,652 (Nexperia USA Inc.)

This part is RoHS3 compliant and functionally equivalent, though marked as obsolete. It may be considered for maintenance and repair of existing systems where supply is available.

Not Recommended: CD74HC4002M96 (Harris Corporation)

This part is RoHS non-compliant and obsolete, making it unsuitable for new designs or applications subject to environmental regulations.

Frequently Asked Questions (FAQ)

Q: Can I use 74HC4002D-Q100,118 as a direct replacement for CD74HC4002M?

A: Yes. Both parts are functionally identical NOR gate ICs with the same logic configuration, electrical specifications, and 14-SOIC package. The primary difference is that 74HC4002D-Q100,118 is actively produced and carries automotive qualification.

Q: What is the difference between the tube and tape & reel packaging options?

A: Packaging format does not affect electrical or functional performance. Tube packaging is suitable for manual assembly and lower-volume applications. Tape & reel packaging is optimized for automated pick-and-place assembly in high-volume production.

Q: Does the operating temperature range difference between -55°C and -40°C minimum affect substitution?

A: The -40°C minimum specification of 74HC4002D,652 and 74HC4002D-Q100,118 is acceptable for most industrial and commercial applications. If your design requires operation below -40°C, the original CD74HC4002M specification of -55°C minimum is necessary.

Q: Why is CD74HC4002M96 listed if it is not recommended?

A: CD74HC4002M96 is functionally equivalent but RoHS non-compliant. It is included for reference in legacy system documentation and repair scenarios where existing stock may be available, but it should not be selected for new designs.

Q: Are all substitute parts pin-compatible with the original CD74HC4002M?

A: Yes. All listed substitute parts use the 14-SOIC package with identical pinout and signal assignments. No PCB layout modifications are required for substitution.

Q: What certifications should I verify for my specific application?

A: Verify RoHS compliance status against your regional requirements. If your application is automotive or requires functional safety qualification, confirm AEC-Q100 status. The 74HC4002D-Q100,118 carries this qualification; other parts do not.

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