CD4093BCMX Equivalent & Substitute Parts

Part Overview

The CD4093BCMX is a NAND Gate IC featuring 4 channels with 2 inputs per channel and integrated Schmitt Trigger functionality, packaged in 14-SOIC surface mount configuration. Manufactured by onsemi, this component operates across a 3V to 15V supply range and is classified as Obsolete. Due to its obsolete status, equivalent substitute parts from active manufacturers are necessary for new designs and ongoing production requirements. Substitute parts maintain functional equivalence while offering improved availability and active product support.

Key Parameters

Parameter	CD4093BCMX
Logic Type	NAND Gate
Number of Circuits	4
Number of Inputs	2
Features	Schmitt Trigger
Voltage - Supply	3V ~ 15V
Current - Quiescent (Max)	1 µA
Current - Output High, Low	3.4mA, 3.4mA
Input Logic Level - Low	1.5V ~ 4.5V
Input Logic Level - High	4.6V ~ 10.5V
Max Propagation Delay @ 15V, 50pF	160ns
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 for the CD4093BCMX is determined by the following critical parameters:

Functional Requirements:

Logic Type: NAND Gate
Number of Circuits: 4 channels
Number of Inputs: 2 inputs per channel
Features: Schmitt Trigger capability

Electrical Compatibility:

Voltage Supply Range: Must encompass or exceed 3V ~ 15V
Output Current Capability: Minimum 3.4mA for both high and low states
Propagation Delay: Maximum 160ns at 15V with 50pF load
Quiescent Current: Maximum 1 µA

Physical Compatibility:

Package: 14-SOIC surface mount
Pin Configuration: Identical to CD4093 base product number

Substitute parts are grouped into two categories based on these parameters: direct functional equivalents with identical Schmitt Trigger features and enhanced-performance variants with improved electrical characteristics that maintain backward compatibility.

Parameter Comparison

Parameter	CD4093BCMX	MC14093BDG	MC14093BDR2G	CD4093BM	CD4093BM96	CD4093BMT	CD4093BNSR	HEC4093BT,112	HEC4093BT,118
Manufacturer	onsemi	onsemi	onsemi	Harris Corporation	Texas Instruments	Texas Instruments	Texas Instruments	NXP USA Inc.	NXP USA Inc.
Logic Type	NAND Gate	NAND Gate	NAND Gate	NAND Gate	NAND Gate	NAND Gate	NAND Gate	NAND Gate	NAND Gate
Number of Circuits	4	4	4	4	4	4	4	4	4
Number of Inputs	2	2	2	2	2	2	2	2	2
Features	Schmitt Trigger	—	—	Schmitt Trigger	Schmitt Trigger	Schmitt Trigger	Schmitt Trigger	Schmitt Trigger	Schmitt Trigger
Voltage - Supply	3V ~ 15V	3V ~ 18V	3V ~ 18V	3V ~ 18V	3V ~ 18V	3V ~ 18V	3V ~ 18V	3V ~ 15V	3V ~ 15V
Current - Quiescent (Max)	1 µA	1 µA	1 µA	4 µA	4 µA	4 µA	4 µA	1 µA	1 µA
Current - Output High, Low	3.4mA, 3.4mA	8.8mA, 8.8mA	8.8mA, 8.8mA	3.4mA, 3.4mA	3.4mA, 3.4mA	3.4mA, 3.4mA	3.4mA, 3.4mA	3.4mA, 3.4mA	3.4mA, 3.4mA
Input Logic Level - Low	1.5V ~ 4.5V	0.9V ~ 4V	0.9V ~ 4V	0.9V ~ 4V	0.9V ~ 4V	0.9V ~ 4V	0.9V ~ 4V	1.5V ~ 4V	1.5V ~ 4V
Input Logic Level - High	4.6V ~ 10.5V	3.6V ~ 10.8V	3.6V ~ 10.8V	3.6V ~ 10.8V	3.6V ~ 10.8V	3.6V ~ 10.8V	3.6V ~ 10.8V	4.6V ~ 11V	4.6V ~ 11V
Max Propagation Delay @ 15V, 50pF	160ns	80ns	80ns	130ns	130ns	130ns	130ns	60ns	60ns
Operating Temperature	-55°C ~ 125°C	-55°C ~ 125°C	-55°C ~ 125°C	-55°C ~ 125°C	-55°C ~ 125°C	-55°C ~ 125°C	-55°C ~ 125°C	-40°C ~ 125°C	-40°C ~ 125°C
Package / Case	14-SOIC (0.154", 3.90mm)	14-SOIC (0.154", 3.90mm)	14-SOIC (0.154", 3.90mm)	14-SOIC (0.154", 3.90mm)	14-SOIC (0.154", 3.90mm)	14-SOIC (0.154", 3.90mm)	14-SOIC (0.209", 5.30mm)	14-SOIC (0.154", 3.90mm)	14-SOIC (0.154", 3.90mm)
Product Status	Obsolete	Active	Active	Active	Active	Discontinued at DiGi Electronics	Active	Active	Active
RoHS Status	—	ROHS3 Compliant	ROHS3 Compliant	—	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant

Engineering Selection Recommendations

Primary Substitutes (Schmitt Trigger, Active Status):

CD4093BM96 and CD4093BMT from Texas Instruments are the preferred substitutes. Both maintain Schmitt Trigger functionality, identical output current specifications (3.4mA), and improved propagation delay (130ns versus 160ns). Both carry ROHS3 compliance and active product status. CD4093BM96 is available in Cut Tape & Digi-Reel packaging with 65,200 units in stock, while CD4093BMT is available in Tape & Reel with 2,084 units in stock.

Alternative Substitutes (Enhanced Performance):

MC14093BDR2G and MC14093BDG from onsemi offer enhanced output current capability (8.8mA) and faster propagation delay (80ns), with extended supply voltage range to 18V. Both are ROHS3 compliant and active. MC14093BDR2G provides the highest inventory availability at 105,200 units.

Specialized Applications (Automotive Grade):

CD4093BQM96G4Q1 and CD4093BQM96Q1 are automotive-qualified variants (AEC-Q100) with operating temperature range of -40°C to 125°C. These are suitable for automotive and harsh environment applications requiring qualification documentation.

Package Consideration:

CD4093BNSR uses a wider 14-SO package (0.209" width) versus the standard 14-SOIC (0.154" width). This variant is not recommended for direct PCB replacement without layout verification.

Availability and Compliance:

All recommended substitutes maintain REACH Unaffected status and EAR99 export classification. Selection should prioritize active product status and ROHS3 compliance for new designs.

Frequently Asked Questions (FAQ)

Q: Can MC14093BDG replace CD4093BCMX directly on the PCB?

A: Yes. MC14093BDG maintains identical 14-SOIC package dimensions (0.154", 3.90mm width), pin configuration, and functional specifications. The absence of Schmitt Trigger designation does not affect compatibility, as the device performs the same NAND gate logic function. However, verify that the enhanced output current (8.8mA versus 3.4mA) and faster propagation delay (80ns versus 160ns) do not create timing conflicts in your circuit.

Q: What is the difference between CD4093BM96 and CD4093BMT?

A: Both are Texas Instruments CD4093 variants with identical electrical specifications. The difference is packaging: CD4093BM96 is supplied in Cut Tape & Digi-Reel format, while CD4093BMT is supplied in Tape & Reel format. CD4093BM96 has significantly higher inventory availability (65,200 units versus 2,084 units). Select based on your assembly process requirements.

Q: Why do some substitutes have higher quiescent current (4 µA versus 1 µA)?

A: CD4093BM, CD4093BM96, and CD4093BMT variants from Harris Corporation and Texas Instruments specify 4 µA maximum quiescent current, compared to 1 µA for the original CD4093BCMX and onsemi MC14093 variants. This difference is within acceptable limits for most applications but should be evaluated if power consumption is critical. For ultra-low-power designs, select MC14093BDR2G or MC14093BDG.

Q: Is CD4093BNSR compatible with CD4093BCMX?

A: CD4093BNSR is functionally equivalent but uses a wider 14-SO package (0.209" width) compared to the standard 14-SOIC (0.154" width). Direct PCB substitution is not possible without layout modification. Use only if your PCB footprint accommodates the wider package.

Q: What does ROHS3 Compliant mean for substitution?

A: ROHS3 Compliant indicates the part meets Restriction of Hazardous Substances Directive 3 requirements, restricting lead and other hazardous materials. All active substitute parts listed carry this certification, making them suitable for applications requiring environmental compliance. The original CD4093BCMX does not specify RoHS status due to its obsolete classification.

Q: Can I use HEC4093BT variants as substitutes?

A: Yes. HEC4093BT,112 and HEC4093BT,118 from NXP USA Inc. are functionally equivalent with Schmitt Trigger features, identical output current (3.4mA), and faster propagation delay (60ns). Both maintain the 3V ~ 15V supply range and 14-SOIC package. Operating temperature range is -40°C to 125°C (versus -55°C to 125°C for the original), which is acceptable for most commercial and industrial applications.

Q: Are automotive-grade variants necessary for non-automotive applications?

A: No. CD4093BQM96G4Q1 and CD4093BQM96Q1 are automotive-qualified (AEC-Q100) with restricted operating temperature (-40°C to 125°C). These are required only for automotive, aerospace, or other applications with explicit AEC-Q100 qualification requirements. For standard commercial applications, standard-grade variants are appropriate and more cost-effective.

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