CD4011BCMX NAND Gate IC Equivalent & Substitute Parts

Part Overview

The CD4011BCMX is a 4-channel 2-input NAND gate logic IC manufactured by onsemi in 14-SOIC surface mount packaging. This component operates across a 3V to 15V supply voltage range with a maximum quiescent current of 1 µA and propagation delay of 70ns at 15V with 50pF load. The part is currently listed as obsolete, making equivalent and substitute parts necessary for ongoing design support and production continuity.

Key Parameters

Parameter	CD4011BCMX
Logic Type	NAND 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 @ V, Max CL	70ns @ 15V, 50pF
Operating Temperature	-55°C ~ 125°C
Package / Case	14-SOIC (0.154", 3.90mm Width)
Mounting Type	Surface Mount
Series	4000B
Product Status	Obsolete

Substitute Part Grouping Explanation

Substitution for the CD4011BCMX is determined by strict electrical and mechanical compatibility across the following parameters:

Critical Substitution Criteria:

Logic type: 4-channel 2-input NAND gate
Package: 14-SOIC surface mount form factor
Supply voltage range: Must encompass or exceed 3V ~ 15V
Input/output logic levels: Must be compatible with CD4011BCMX thresholds
Operating temperature: Must support -55°C ~ 125°C range
Quiescent current: Maximum 1 µA
Propagation delay: Must not exceed 70ns @ 15V, 50pF

Substitute Categories:

Category A - Direct Electrical Equivalents (onsemi MC14011 Series): MC14011BDG, MC14011BDR2G, MC14011UBDG, MC14011UBDR2G meet all electrical parameters with extended supply voltage (3V ~ 18V) and maintain identical logic thresholds and quiescent current specifications.

Category B - Direct Electrical Equivalents (onsemi NLV14011 Series): NLV14011BDR2G and NLV14011UBDR2G provide identical electrical performance to MC14011 variants with extended supply voltage range.

Category C - Texas Instruments CD4011 Series: CD4011BM, CD4011BM96, CD4011BME4, and CD4011BMT are Texas Instruments manufactured equivalents with identical electrical specifications to the original CD4011BCMX, offering extended supply voltage (3V ~ 18V) and active product status.

Parameter Comparison

Part Number	Manufacturer	Supply Voltage	Quiescent Current (Max)	Output Current High/Low	Input Logic Low	Input Logic High	Propagation Delay @ 15V, 50pF	Operating Temp	Package	Product Status
CD4011BCMX	onsemi	3V ~ 15V	1 µA	3.4mA, 3.4mA	1.5V ~ 4V	4.6V ~ 11V	70ns	-55°C ~ 125°C	14-SOIC	Obsolete
MC14011BDG	onsemi	3V ~ 18V	1 µA	8.8mA, 8.8mA	1.5V ~ 4V	4.6V ~ 11V	80ns	-55°C ~ 125°C	14-SOIC	Active
MC14011BDR2G	onsemi	3V ~ 18V	1 µA	8.8mA, 8.8mA	1.5V ~ 4V	4.6V ~ 11V	80ns	-55°C ~ 125°C	14-SOIC	Active
MC14011UBDG	onsemi	3V ~ 18V	1 µA	4.6mA, 8.8mA	1V ~ 2.5V	4V ~ 12.5V	80ns	-55°C ~ 125°C	14-SOIC	Active
MC14011UBDR2G	onsemi	3V ~ 18V	1 µA	4.6mA, 8.8mA	1V ~ 2.5V	4V ~ 12.5V	80ns	-55°C ~ 125°C	14-SOIC	Active
NLV14011BDR2G	onsemi	3V ~ 18V	1 µA	8.8mA, 8.8mA	1.5V ~ 4V	4.6V ~ 11V	80ns	-55°C ~ 125°C	14-SOIC	Active
NLV14011UBDR2G	onsemi	3V ~ 18V	1 µA	4.6mA, 8.8mA	1V ~ 2.5V	4V ~ 12.5V	80ns	-55°C ~ 125°C	14-SOIC	Active
CD4011BM	Texas Instruments	3V ~ 18V	1 µA	3.4mA, 3.4mA	1.5V ~ 4V	4.6V ~ 11V	90ns	-55°C ~ 125°C	14-SOIC	Active
CD4011BM96	Texas Instruments	3V ~ 18V	1 µA	3.4mA, 3.4mA	1.5V ~ 4V	4.6V ~ 11V	90ns	-55°C ~ 125°C	14-SOIC	Active
CD4011BME4	Texas Instruments	3V ~ 18V	1 µA	3.4mA, 3.4mA	1.5V ~ 4V	4.6V ~ 11V	90ns	-55°C ~ 125°C	14-SOIC	Discontinued at DiGi Electronics
CD4011BMT	Texas Instruments	3V ~ 18V	1 µA	3.4mA, 3.4mA	1.5V ~ 4V	4.6V ~ 11V	90ns	-55°C ~ 125°C	14-SOIC	Discontinued at DiGi Electronics

Engineering Selection Recommendations

Primary Substitutes (Active Product Status):

For applications requiring direct replacement with active product availability, CD4011BM and CD4011BM96 from Texas Instruments provide identical electrical specifications to the original CD4011BCMX with extended supply voltage range (3V ~ 18V). Both parts maintain the same output current characteristics (3.4mA high/low) and input logic thresholds. CD4011BM96 offers Cut Tape and Digi-Reel packaging with significantly higher inventory (138,753 pcs).

MC14011BDG and MC14011BDR2G from onsemi provide functional equivalence with increased output current capability (8.8mA high/low) and extended supply voltage. MC14011BDR2G in Tape & Reel packaging offers the highest inventory availability (17,500 pcs) among onsemi options.

Secondary Substitutes (Modified Logic Thresholds):

MC14011UBDG, MC14011UBDR2G, NLV14011UBDR2G feature modified input logic thresholds (1V ~ 2.5V low, 4V ~ 12.5V high) and asymmetric output current (4.6mA high, 8.8mA low). These variants are suitable only for applications where the altered logic thresholds are compatible with system requirements.

Compliance Considerations:

All substitute parts maintain RoHS3 compliance, REACH unaffected status, and identical EAR99 export classification. Moisture sensitivity level remains 1 (Unlimited) across all variants.

Discontinued Parts:

CD4011BME4 and CD4011BMT are discontinued at DiGi Electronics and should not be selected for new designs requiring long-term supply assurance.

Frequently Asked Questions (FAQ)

Q: Can MC14011BDG replace CD4011BCMX directly in existing designs?

A: MC14011BDG is electrically compatible with CD4011BCMX for logic function and timing. The extended supply voltage range (3V ~ 18V vs. 3V ~ 15V) and increased output current (8.8mA vs. 3.4mA) are backward compatible. Input logic thresholds and quiescent current remain identical. Verify that increased output current does not affect downstream circuit behavior.

Q: What is the difference between MC14011BDG and MC14011UBDG?

A: Both are onsemi 4-channel 2-input NAND gates in 14-SOIC packaging. MC14011UBDG features modified input logic thresholds (1V ~ 2.5V low, 4V ~ 12.5V high) compared to MC14011BDG (1.5V ~ 4V low, 4.6V ~ 11V high). Select MC14011UBDG only if your application requires the lower input threshold specifications.

Q: Why do CD4011BM and CD4011BM96 have different propagation delays than CD4011BCMX?

A: CD4011BM and CD4011BM96 specify 90ns propagation delay at 15V with 50pF load, compared to 70ns for CD4011BCMX. Both values fall within acceptable CMOS logic performance for 4000B series devices. Verify timing margins in your specific application if propagation delay is critical.

Q: Are packaging differences between Tube, Tape & Reel, and Cut Tape significant for substitution?

A: Packaging affects handling, storage, and assembly processes but does not alter electrical performance. Tube packaging (BDG variants) suits lower-volume applications. Tape & Reel (BDR2G, BMT variants) is standard for automated assembly. Cut Tape & Digi-Reel (BM96) offers flexibility for mixed-volume production. Select based on assembly requirements, not electrical compatibility.

Q: Can I use NLV14011 series parts as substitutes?

A: NLV14011BDR2G and NLV14011UBDR2G are functionally equivalent to their MC14011 counterparts with identical electrical specifications. The NLV prefix indicates onsemi's low-voltage optimized variant. Both are suitable substitutes where MC14011 parts are specified, with the same logic threshold considerations applying to UBDR2G variants.

Q: What inventory considerations should guide my selection?

A: CD4011BM96 (Texas Instruments, 138,753 pcs) and MC14011BDR2G (onsemi, 17,500 pcs) offer the highest availability. For applications requiring immediate supply, these parts provide the best long-term sourcing assurance. CD4011BME4 and CD4011BMT should be avoided due to discontinued status.

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