CD4011UBM NAND Gate IC Equivalent & Substitute Parts

Part Overview

The CD4011UBM is a 4-channel 2-input NAND gate logic IC manufactured by Texas Instruments in 14-SOIC surface mount package. This part is classified as Last Time Buy, indicating discontinued production with limited inventory availability. The CD4011UBM operates across a wide supply voltage range of 3V to 18V and is part of the 4000B logic series, widely used in digital logic applications requiring NAND gate functionality. Due to its Last Time Buy status, identifying functionally equivalent substitute parts is essential for design continuity and long-term component sourcing.

Key Parameters

Parameter	CD4011UBM
Manufacturer	Texas Instruments
Logic Type	NAND Gate
Number of Circuits	4
Number of Inputs	2
Voltage Supply Range	3V ~ 18V
Current - Quiescent (Max)	1 µA
Current - Output High, Low	3.4mA, 3.4mA
Input Logic Level - Low	1V ~ 2.5V
Input Logic Level - High	4V ~ 12.5V
Max Propagation Delay @ 15V, 50pF	50ns
Operating Temperature	-55°C ~ 125°C
Package / Case	14-SOIC (0.154", 3.90mm Width)
Product Status	Last Time Buy
RoHS Status	ROHS3 Compliant
Moisture Sensitivity Level	1 (Unlimited)

Substitute Part Grouping Explanation

Substitute parts for the CD4011UBM are qualified based on the following critical parameters that determine functional equivalence:

Core Functional Parameters:

Logic Type: NAND Gate (4 channels, 2 inputs per channel)
Supply Voltage Range: Minimum 3V to 18V compatibility
Output Current Capability: Sufficient to meet 3.4mA minimum requirement
Propagation Delay: Maximum 90ns at 15V, 50pF load
Input Logic Levels: Compatible threshold ranges
Operating Temperature: -55°C to 125°C range
Package: 14-SOIC surface mount form factor

Compliance Parameters:

RoHS3 Compliance
Moisture Sensitivity Level 1
REACH Unaffected status

Substitute parts are grouped into two categories: Texas Instruments direct equivalents (CD4011UBM96, CD4011BM96) and cross-manufacturer alternatives (onsemi MC14011 series, Nexperia HEF4011 series). All listed substitutes maintain the same logic function, package footprint, and core electrical characteristics within specified tolerances.

Parameter Comparison

Part Number	Manufacturer	Voltage Supply	Output Current (H/L)	Propagation Delay	Input Logic Low	Input Logic High	Temp Range	Packaging	Status
CD4011UBM	Texas Instruments	3V ~ 18V	3.4mA / 3.4mA	50ns @ 15V	1V ~ 2.5V	4V ~ 12.5V	-55°C ~ 125°C	Tube	Last Time Buy
CD4011UBM96	Texas Instruments	3V ~ 18V	3.4mA / 3.4mA	50ns @ 15V	1V ~ 2.5V	4V ~ 12.5V	-55°C ~ 125°C	Tape & Reel	Active
CD4011BM96	Texas Instruments	3V ~ 18V	3.4mA / 3.4mA	90ns @ 15V	1.5V ~ 4V	4.6V ~ 11V	-55°C ~ 125°C	Cut Tape & Digi-Reel	Active
MC14011UBDR2G	onsemi	3V ~ 18V	4.6mA / 8.8mA	80ns @ 15V	1V ~ 2.5V	4V ~ 12.5V	-55°C ~ 125°C	Tape & Reel	Active
MC14011BDR2G	onsemi	3V ~ 18V	8.8mA / 8.8mA	80ns @ 15V	1.5V ~ 4V	4.6V ~ 11V	-55°C ~ 125°C	Tape & Reel	Active
MC14011UBDG	onsemi	3V ~ 18V	4.6mA / 8.8mA	80ns @ 15V	1V ~ 2.5V	4V ~ 12.5V	-55°C ~ 125°C	Tube	Active
MC14011BDG	onsemi	3V ~ 18V	8.8mA / 8.8mA	80ns @ 15V	1.5V ~ 4V	4.6V ~ 11V	-55°C ~ 125°C	Tube	Active
HEF4011BT,653	Nexperia USA Inc.	3V ~ 15V	3.4mA / 3.4mA	35ns @ 15V	1.5V ~ 4V	4.6V ~ 11V	-40°C ~ 125°C	Tape & Reel	Active
HEF4011BT-Q100J	Nexperia USA Inc.	3V ~ 15V	3.4mA / 3.4mA	35ns @ 15V	1.5V ~ 4V	4.6V ~ 11V	-40°C ~ 125°C	Tape & Reel	Active
NLV14011BDR2G	onsemi	3V ~ 18V	8.8mA / 8.8mA	80ns @ 15V	1.5V ~ 4V	4.6V ~ 11V	-55°C ~ 125°C	Tape & Reel	Active
NLV14011BDG	onsemi	3V ~ 18V	8.8mA / 8.8mA	80ns @ 15V	1.5V ~ 4V	4.6V ~ 11V	-55°C ~ 125°C	-	Obsolete

Engineering Selection Recommendations

Primary Recommendation - Texas Instruments Direct Equivalents:

CD4011UBM96 is the preferred substitute, offering identical electrical specifications to the original CD4011UBM with Active product status. This part maintains the same input/output logic levels, propagation delay, and supply voltage range. The only difference is packaging format (Tape & Reel versus Tube), which does not affect electrical function. CD4011UBM96 provides the highest design continuity with 9,366 units in stock.

CD4011BM96 serves as an alternative Texas Instruments option with Active status and significantly higher inventory (138,753 units). This part operates within the same supply voltage and temperature ranges but exhibits slightly relaxed input logic level thresholds and increased propagation delay (90ns versus 50ns). This part is suitable for applications where the relaxed timing specifications are acceptable.

Secondary Recommendation - onsemi Cross-Manufacturer Alternatives:

MC14011UBDR2G and MC14011UBDG maintain identical input/output logic level specifications to the original CD4011UBM (1V ~ 2.5V low, 4V ~ 12.5V high) with Active product status. These parts feature increased propagation delay (80ns) and higher output current capability (4.6mA/8.8mA asymmetric). Both are suitable for direct substitution in applications where the relaxed timing is acceptable.

MC14011BDR2G and MC14011BDG offer higher output current capability (8.8mA symmetric) with relaxed input logic level thresholds. These parts are suitable for applications requiring increased drive capability.

Tertiary Recommendation - Nexperia Cross-Manufacturer Alternatives:

HEF4011BT,653 and HEF4011BT-Q100J provide the fastest propagation delay (35ns) among all substitutes, with identical output current to the original part (3.4mA). However, these parts operate at reduced maximum supply voltage (3V ~ 15V versus 3V ~ 18V) and narrower operating temperature range (-40°C ~ 125°C versus -55°C ~ 125°C). HEF4011BT-Q100J includes AEC-Q100 automotive qualification. These parts are suitable only for applications within the specified voltage and temperature constraints.

Not Recommended:

NLV14011BDG is classified as Obsolete and should not be selected for new designs despite Active status of NLV14011BDR2G.

Frequently Asked Questions (FAQ)

Q: Can CD4011BM96 directly replace CD4011UBM in all applications?

A: CD4011BM96 is electrically compatible for most applications. The key difference is propagation delay (90ns versus 50ns). Applications with timing-critical requirements may require circuit analysis to confirm the relaxed timing specification is acceptable. Input logic level thresholds are also slightly different but remain within standard CMOS operating ranges.

Q: What is the difference between Tube and Tape & Reel packaging?

A: Tube and Tape & Reel are packaging formats for component delivery and handling. Tube packaging contains loose components in a plastic tube, while Tape & Reel packages components on continuous tape for automated assembly. Both formats contain identical die and electrical specifications. Selection depends on assembly process requirements and inventory management practices.

Q: Are onsemi MC14011 parts pin-compatible with Texas Instruments CD4011?

A: Yes. All listed substitute parts maintain the same 14-SOIC package footprint and pin configuration. Pin-to-pin compatibility is confirmed across all manufacturers listed.

Q: Why do some substitutes have different input logic level thresholds?

A: Input logic level thresholds vary slightly between manufacturers due to process variations and design specifications. All listed parts remain within standard CMOS logic level definitions. Verify application-specific input signal levels are compatible with the selected part's threshold specifications.

Q: Can HEF4011BT parts be used in applications requiring -55°C operation?

A: No. HEF4011BT series parts specify a minimum operating temperature of -40°C. Applications requiring -55°C operation must use CD4011, MC14011, or NLV14011 series parts.

Q: What does "Last Time Buy" status mean for CD4011UBM?

A: Last Time Buy indicates the manufacturer has discontinued production and will not accept new orders after a specified date. Existing inventory is limited. Customers should transition to Active status alternatives such as CD4011UBM96 or CD4011BM96 for long-term design continuity.

Q: Are all listed substitutes RoHS3 compliant?

A: Yes. All substitute parts listed maintain RoHS3 compliance and REACH Unaffected status, matching the original CD4011UBM environmental compliance specifications.

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