CD4001BCMX NOR Gate IC Equivalent & Substitute Parts

Part Overview

The CD4001BCMX is a 4-channel NOR gate logic IC manufactured by onsemi in 14-SOIC surface mount packaging. This part operates across a 3V to 15V supply voltage range and is classified as obsolete. Due to its obsolete status, equivalent substitute parts with active product status are necessary for new designs and ongoing production requirements. Substitute parts maintain functional equivalence while offering improved availability and compliance certifications.

Key Parameters

Parameter	CD4001BCMX
Logic Type	NOR Gate
Number of Circuits	4
Number of Inputs	2
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
Package / Case	14-SOIC (0.154", 3.90mm Width)
Mounting Type	Surface Mount
Product Status	Obsolete

Substitute Part Grouping Explanation

Substitution eligibility is determined by the following criteria:

Core Functional Parameters (Must Match):

Logic Type: NOR Gate
Number of Circuits: 4
Number of Inputs: 2
Package / Case: 14-SOIC (0.154", 3.90mm Width)
Mounting Type: Surface Mount

Electrical Compatibility Parameters (Must Be Within or Exceed Specification):

Voltage - Supply: Must support minimum 3V to 15V range
Operating Temperature: Must support -55°C to 125°C range
Input Logic Levels: Must be compatible with CD4001BCMX thresholds
Propagation Delay: Faster or equal performance acceptable

Substitute parts are grouped into two categories based on input logic level specifications:

Category A (Standard Logic Levels): MC14001BDG, MC14001BDR2G, NLV14001BDG, NLV14001BDR2G, CD4001BM, CD4001BM96 — These maintain input logic level thresholds of 1.5V ~ 4V (low) and 4.6V ~ 11V (high), identical to the main part.

Category B (Low-Voltage Logic Levels): MC14001UBDG, MC14001UBDR2G, NLV14001UBDR2G — These feature reduced input logic level thresholds of 1V ~ 2.5V (low) and 4V ~ 12.5V (high), suitable for low-voltage applications.

Category C (Alternative Manufacturer): BU4001BF-E2 (Rohm Semiconductor) — This part uses 14-SOP packaging (0.173", 4.40mm Width) instead of 14-SOIC, with different electrical characteristics including reduced operating temperature range (-40°C to 85°C) and faster propagation delay (40ns).

Parameter Comparison

Part Number	Manufacturer	Voltage - Supply	Current - Output High, Low	Input Logic Level - Low	Input Logic Level - High	Max Propagation Delay @ 15V, 50pF	Operating Temperature	Product Status	Packaging
CD4001BCMX	onsemi	3V ~ 15V	3.4mA, 3.4mA	1.5V ~ 4V	4.6V ~ 11V	70ns	-55°C ~ 125°C	Obsolete	Tube
MC14001BDG	onsemi	3V ~ 18V	8.8mA, 8.8mA	1.5V ~ 4V	4.6V ~ 11V	80ns	-55°C ~ 125°C	Active	Tube
MC14001BDR2G	onsemi	3V ~ 18V	8.8mA, 8.8mA	1.5V ~ 4V	4.6V ~ 11V	80ns	-55°C ~ 125°C	Active	Tape & Reel (TR)
MC14001UBDG	onsemi	3V ~ 18V	4.6mA, 8.8mA	1V ~ 2.5V	4V ~ 12.5V	80ns	-55°C ~ 125°C	Active	Tube
MC14001UBDR2G	onsemi	3V ~ 18V	4.6mA, 8.8mA	1V ~ 2.5V	4V ~ 12.5V	80ns	-55°C ~ 125°C	Active	Tape & Reel (TR)
NLV14001BDG	onsemi	3V ~ 18V	8.8mA, 8.8mA	1.5V ~ 4V	4.6V ~ 11V	80ns	-55°C ~ 125°C	Obsolete	Tube
NLV14001BDR2G	onsemi	3V ~ 18V	8.8mA, 8.8mA	1.5V ~ 4V	4.6V ~ 11V	80ns	-55°C ~ 125°C	Active	Tape & Reel (TR)
NLV14001UBDR2G	onsemi	3V ~ 18V	4.6mA, 8.8mA	1V ~ 2.5V	4V ~ 12.5V	80ns	-55°C ~ 125°C	Active	Tape & Reel (TR)
CD4001BM	Texas Instruments	3V ~ 18V	3.4mA, 3.4mA	1.5V ~ 4V	4.6V ~ 11V	90ns	-55°C ~ 125°C	Active	Tube
CD4001BM96	Harris Corporation	3V ~ 18V	3.4mA, 3.4mA	1.5V ~ 4V	4.6V ~ 11V	90ns	-55°C ~ 125°C	Active	Tube
BU4001BF-E2	Rohm Semiconductor	3V ~ 16V	1.2mA, 3mA	1.5V ~ 4V	4.6V ~ 11V	40ns	-40°C ~ 85°C	Not For New Designs	Tape & Reel (TR)

Engineering Selection Recommendations

Primary Substitutes (Recommended for New Designs):

MC14001BDR2G and MC14001BDG are the preferred substitutes. Both are manufactured by onsemi with active product status and ROHS3 compliance. They maintain identical input logic level specifications to the CD4001BCMX, support extended supply voltage (3V ~ 18V), and operate across the full temperature range (-55°C ~ 125°C). The BDR2G variant is packaged in Tape & Reel format for automated assembly, while BDG is supplied in Tube format.

Low-Voltage Variants:

MC14001UBDR2G and MC14001UBDG are suitable when designs require reduced input logic level thresholds (1V ~ 2.5V low, 4V ~ 12.5V high). These parts maintain active product status and full temperature range support. The UBDR2G variant is available in Tape & Reel packaging.

Alternative Manufacturers:

CD4001BM (Texas Instruments) and CD4001BM96 (Harris Corporation) provide functionally equivalent substitutes with active product status and ROHS3 compliance. Both maintain standard input logic levels and full temperature range operation. Propagation delay is slightly increased to 90ns compared to the original 70ns specification.

Not Recommended:

BU4001BF-E2 (Rohm Semiconductor) has a restricted operating temperature range (-40°C ~ 85°C) and is marked "Not For New Designs." This part is suitable only for legacy system maintenance where temperature constraints are acceptable.

NLV14001BDG is obsolete and should not be selected for new designs despite functional equivalence.

Frequently Asked Questions (FAQ)

Q: Can MC14001BDR2G directly replace CD4001BCMX in existing designs?

A: Yes. MC14001BDR2G maintains identical logic type, circuit count, input count, and package dimensions. It supports the full 3V to 15V supply range required by CD4001BCMX designs and operates across the same temperature range (-55°C ~ 125°C). The extended supply voltage specification (3V ~ 18V) provides additional design margin.

Q: What is the difference between MC14001BDG and MC14001BDR2G?

A: Both parts are electrically identical. The primary difference is packaging format: BDG is supplied in Tube format for manual handling, while BDR2G is supplied in Tape & Reel format optimized for automated pick-and-place assembly. Select based on assembly process requirements.

Q: Why do MC14001UBDG and MC14001UBDR2G have different input logic level specifications?

A: The "U" designation indicates these parts are optimized for low-voltage applications with reduced input logic level thresholds (1V ~ 2.5V low, 4V ~ 12.5V high). Standard variants (MC14001BDG, MC14001BDR2G) maintain the original thresholds (1.5V ~ 4V low, 4.6V ~ 11V high). Select the U-variant only if your design operates with reduced input signal levels.

Q: Is BU4001BF-E2 a suitable substitute?

A: BU4001BF-E2 is functionally equivalent but has significant limitations. It operates only to 85°C maximum (versus 125°C for CD4001BCMX), uses 14-SOP packaging instead of 14-SOIC, and is marked "Not For New Designs." Use only for legacy system maintenance where temperature constraints are acceptable and package compatibility is confirmed.

Q: What compliance certifications apply to substitute parts?

A: MC14001BDG, MC14001BDR2G, MC14001UBDG, MC14001UBDR2G, NLV14001BDR2G, NLV14001UBDR2G, CD4001BM, and CD4001BM96 are ROHS3 compliant. All parts listed are REACH Unaffected and classified as EAR99 for export control purposes.

Q: Can I use CD4001BM96 if MC14001BDR2G is unavailable?

A: Yes. CD4001BM96 is functionally equivalent with active product status and ROHS3 compliance. It maintains identical input logic levels and full temperature range operation. Propagation delay is 90ns versus 70ns for the original part, which is acceptable for most logic applications.

Q: What is the inventory status of substitute parts?

A: MC14001BDR2G has 17,246 units in stock. MC14001BDG has 100,199 units. CD4001BM96 has 35,300 units. These quantities support both prototype and production volume requirements.

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