CD4002BCN Equivalent & Substitute Parts

Part Overview

The CD4002BCN is a NOR Gate IC featuring 2 channels with 4 inputs per channel, housed in a 14-MDIP package. This component operates across a supply voltage range of 3V to 15V and is designed for digital logic applications requiring NOR gate functionality. The CD4002BCN is classified as obsolete, making equivalent and substitute parts necessary for ongoing system support and new design implementations.

Key Parameters

Parameter	Value
Logic Type	NOR Gate
Number of Circuits	2
Number of Inputs	4
Voltage - Supply	3V ~ 15V
Current - Quiescent (Max)	1 µA
Current - Output High, Low	3.4mA, 3.4mA
Input Logic Level - Low	1.5V ~ 4V
Input Logic Level - High	4.6V ~ 11V
Max Propagation Delay @ 15V, 50pF	70ns
Operating Temperature	-55°C ~ 125°C
Mounting Type	Through Hole
Package / Case	14-DIP (0.300", 7.62mm)
Series	4000B

Substitute Part Grouping Explanation

Substitution of the CD4002BCN is determined by strict equivalence across the following critical parameters:

Logic Type: NOR Gate with identical channel and input configuration
Number of Circuits: 2 channels
Number of Inputs: 4 inputs per channel
Voltage - Supply: Compatible operating range (minimum 3V, maximum ≥15V)
Current - Quiescent: Maximum 1 µA
Current - Output: 3.4mA for both high and low states
Input Logic Levels: Matching threshold specifications
Operating Temperature: -55°C ~ 125°C range
Mounting Type: Through Hole
Package / Case: 14-DIP form factor

The CD4002BE qualifies as a direct substitute based on these parameters. Both parts belong to the 4000B logic series and maintain functional and electrical equivalence within the specified operating conditions.

Parameter Comparison

Parameter	CD4002BCN (onsemi)	CD4002BE (Harris Corporation)	Compatibility
Logic Type	NOR Gate	NOR Gate	Equivalent
Number of Circuits	2	2	Equivalent
Number of Inputs	4	4	Equivalent
Voltage - Supply	3V ~ 15V	3V ~ 18V	Compatible (CD4002BE supports extended range)
Current - Quiescent (Max)	1 µA	1 µA	Equivalent
Current - Output High, Low	3.4mA, 3.4mA	3.4mA, 3.4mA	Equivalent
Input Logic Level - Low	1.5V ~ 4V	1.5V ~ 4V	Equivalent
Input Logic Level - High	4.6V ~ 11V	4.6V ~ 11V	Equivalent
Max Propagation Delay @ 15V, 50pF	70ns	90ns	Compatible (CD4002BE within acceptable timing)
Operating Temperature	-55°C ~ 125°C	-55°C ~ 125°C	Equivalent
Mounting Type	Through Hole	Through Hole	Equivalent
Package / Case	14-DIP (0.300", 7.62mm)	14-DIP (0.300", 7.62mm)	Equivalent
Series	4000B	4000B	Equivalent
Product Status	Obsolete	Obsolete	Both obsolete
RoHS Status	RoHS non-compliant	RoHS non-compliant	Equivalent

Engineering Selection Recommendations

The CD4002BE from Harris Corporation is a direct functional equivalent to the CD4002BCN. Both components are obsolete products within the 4000B logic series, sharing identical logic configuration, electrical characteristics, and package specifications.

The CD4002BE offers an extended supply voltage range (3V ~ 18V versus 3V ~ 15V), providing additional operational flexibility in applications requiring higher supply voltages. The propagation delay specification of 90ns at 15V and 50pF load is slightly higher than the CD4002BCN at 70ns, but remains within acceptable parameters for most digital logic applications.

Both parts maintain RoHS non-compliant status and identical compliance certifications (ECCN: EAR99, HTSUS: 8542.39.0001). Selection between these parts should be based on supply voltage requirements and timing constraints specific to the application.

Frequently Asked Questions (FAQ)

Q: Can the CD4002BE replace the CD4002BCN in existing designs?

A: Yes. The CD4002BE is functionally equivalent across all critical parameters including logic type, channel configuration, input count, electrical characteristics, and package form factor. Both components are 14-DIP through-hole packages with identical pinouts.

Q: What is the difference in propagation delay between these parts?

A: The CD4002BCN specifies 70ns maximum propagation delay at 15V with 50pF load, while the CD4002BE specifies 90ns under identical conditions. This 20ns difference is acceptable for most digital logic applications but should be evaluated against specific timing requirements.

Q: Are there supply voltage considerations when substituting?

A: The CD4002BE supports a wider supply voltage range (3V ~ 18V) compared to the CD4002BCN (3V ~ 15V). If your application operates within the CD4002BCN range, both parts are compatible. If higher supply voltages are required, the CD4002BE provides extended capability.

Q: Do these parts have identical package dimensions?

A: Yes. Both the CD4002BCN and CD4002BE use the 14-DIP (0.300", 7.62mm) package with identical pinout and mechanical specifications, ensuring direct board-level compatibility.

Q: What is the significance of both parts being obsolete?

A: Both components are classified as obsolete products. This status indicates that manufacturers have discontinued production. Availability is limited to existing inventory. For new designs, evaluation of current-generation logic gate alternatives may be warranted for long-term supply assurance.

Q: Are there compliance or certification differences?

A: Both parts share identical compliance designations: RoHS non-compliant, ECCN EAR99, and HTSUS 8542.39.0001. No compliance advantages exist between these substitutes.

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