CD4093BCM NAND Gate IC Equivalent & Substitute Parts

Part Overview

The CD4093BCM is a 4-channel NAND gate IC with Schmitt trigger inputs manufactured by onsemi in 14-SOIC surface mount packaging. This logic component operates across a 3V to 15V supply range and is designed for digital signal processing applications requiring noise immunity through Schmitt trigger functionality.

The CD4093BCM is classified as obsolete. Identifying equivalent and substitute parts is necessary to maintain design continuity, ensure supply chain availability, and support ongoing production requirements for systems utilizing this logic gate architecture.

Key Parameters

Parameter	Value
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
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

Substitute Part Grouping Explanation

Substitution eligibility for the CD4093BCM is determined by the following critical parameters:

Logic Architecture: NAND gate with 4 channels and 2 inputs per channel
Schmitt Trigger Feature: Presence of Schmitt trigger input conditioning
Package Compatibility: 14-SOIC surface mount form factor with 0.154" width
Supply Voltage Range: Minimum 3V to 15V operation
Output Drive Capability: 3.4mA output current specification
Propagation Delay: Maximum 160ns at 15V with 50pF load
Temperature Range: -55°C to 125°C operating window

Substitute parts must maintain compatibility across these parameters. Parts with extended supply voltage ranges (3V ~ 18V), improved propagation delay characteristics, or higher output drive capabilities are functionally compatible and represent direct substitutes. Packaging variants (14-SO versus 14-SOIC) and manufacturer differences do not preclude substitution when electrical specifications align.

Parameter Comparison

Part Number	Manufacturer	Logic Type	Circuits / Inputs	Schmitt Trigger	Supply Voltage	Quiescent Current (Max)	Output Current	Propagation Delay @ 15V, 50pF	Operating Temp	Package	Product Status
CD4093BCM	onsemi	NAND Gate	4 / 2	Yes	3V ~ 15V	1 µA	3.4mA, 3.4mA	160ns	-55°C ~ 125°C	14-SOIC	Obsolete
MC14093BDG	onsemi	NAND Gate	4 / 2	No	3V ~ 18V	1 µA	8.8mA, 8.8mA	80ns	-55°C ~ 125°C	14-SOIC	Active
MC14093BDR2G	onsemi	NAND Gate	4 / 2	No	3V ~ 18V	1 µA	8.8mA, 8.8mA	80ns	-55°C ~ 125°C	14-SOIC	Active
CD4093BM	Harris Corporation	NAND Gate	4 / 2	Yes	3V ~ 18V	4 µA	3.4mA, 3.4mA	130ns	-55°C ~ 125°C	14-SOIC	Active
CD4093BM96	Texas Instruments	NAND Gate	4 / 2	Yes	3V ~ 18V	4 µA	3.4mA, 3.4mA	130ns	-55°C ~ 125°C	14-SOIC	Active
CD4093BMT	Texas Instruments	NAND Gate	4 / 2	Yes	3V ~ 18V	4 µA	3.4mA, 3.4mA	130ns	-55°C ~ 125°C	14-SOIC	Discontinued at DiGi Electronics
CD4093BNSR	Texas Instruments	NAND Gate	4 / 2	Yes	3V ~ 18V	4 µA	3.4mA, 3.4mA	130ns	-55°C ~ 125°C	14-SO (0.209")	Active
CD4093BQM96G4Q1	Texas Instruments	NAND Gate	4 / 2	Yes	3V ~ 18V	4 µA	3.4mA, 3.4mA	130ns	-40°C ~ 125°C	14-SOIC	Active
CD4093BQM96Q1	Texas Instruments	NAND Gate	4 / 2	Yes	3V ~ 18V	4 µA	3.4mA, 3.4mA	130ns	-40°C ~ 125°C	14-SOIC	Active
HEC4093BT,112	NXP USA Inc.	NAND Gate	4 / 2	Yes	3V ~ 15V	1 µA	3.4mA, 3.4mA	60ns	-40°C ~ 125°C	14-SO	Active
HEC4093BT,118	NXP USA Inc.	NAND Gate	4 / 2	Yes	3V ~ 15V	1 µA	3.4mA, 3.4mA	60ns	-40°C ~ 125°C	14-SO	Active

Engineering Selection Recommendations

Primary Substitutes (Highest Compatibility)

CD4093BM96 and CD4093BMT from Texas Instruments represent the most direct substitutes. Both maintain Schmitt trigger functionality, identical output drive specifications (3.4mA), and improved propagation delay (130ns versus 160ns). Extended supply voltage range (3V ~ 18V) provides additional design margin. Both parts are ROHS3 compliant and carry REACH Unaffected status, matching the regulatory profile of the original part.

Secondary Substitutes (Extended Supply Range)

MC14093BDG and MC14093BDR2G from onsemi provide active product status with extended supply voltage (3V ~ 18V) and superior propagation delay (80ns). These parts lack Schmitt trigger features but maintain 4-channel, 2-input NAND gate architecture. Selection is appropriate for applications where Schmitt trigger conditioning is not required and faster switching is beneficial.

Automotive-Grade Alternatives

CD4093BQM96G4Q1 and CD4093BQM96Q1 from Texas Instruments are AEC-Q100 qualified automotive-grade variants. These parts maintain identical electrical specifications to CD4093BM96 but with restricted operating temperature range (-40°C ~ 125°C) and automotive qualification. Selection is mandatory for automotive applications requiring AEC-Q100 compliance.

Package Variant Consideration

CD4093BNSR uses 14-SO packaging (0.209" width) versus standard 14-SOIC (0.154" width). This represents a physical footprint change requiring PCB layout modification. Electrical specifications remain compatible with the original part.

NXP Alternatives

HEC4093BT,112 and HEC4093BT,118 from NXP maintain Schmitt trigger functionality and supply voltage range matching the original CD4093BCM (3V ~ 15V). Superior propagation delay (60ns) and active product status support long-term availability. Package designation (14-SO) differs from standard 14-SOIC but maintains mechanical compatibility.

Frequently Asked Questions (FAQ)

Q: Can MC14093BDG replace CD4093BCM directly?

A: MC14093BDG is electrically compatible as a NAND gate with 4 channels and 2 inputs. However, it lacks Schmitt trigger input conditioning present in the original part. Selection depends on whether Schmitt trigger noise immunity is required in the application. If noise immunity is critical, choose CD4093BM96 or HEC4093BT variants instead.

Q: What is the difference between CD4093BM96 and CD4093BMT?

A: Both parts are identical in electrical specifications and Schmitt trigger functionality. The difference is packaging format: CD4093BM96 uses Cut Tape (CT) & Digi-Reel format, while CD4093BMT uses Tape & Reel (TR) format. CD4093BMT is discontinued at DiGi Electronics. CD4093BM96 is the recommended active substitute.

Q: Can I use CD4093BNSR as a substitute?

A: CD4093BNSR is electrically compatible but uses 14-SO packaging (0.209" width) instead of 14-SOIC (0.154" width). This requires PCB layout modification. If PCB redesign is not feasible, select CD4093BM96 or CD4093BMT which maintain standard 14-SOIC packaging.

Q: Are automotive-grade parts (CD4093BQM96G4Q1) suitable for non-automotive applications?

A: Yes. Automotive-grade parts exceed standard industrial requirements and are fully compatible with non-automotive designs. The restricted temperature range (-40°C ~ 125°C) is acceptable for most industrial applications. Use automotive-grade variants when available for enhanced reliability margins.

Q: What is the significance of the extended supply voltage range (3V ~ 18V) in MC14093BDG?

A: Extended supply voltage range provides design flexibility for systems operating across wider voltage domains. The original CD4093BCM operates 3V ~ 15V. MC14093BDG supports up to 18V, eliminating potential overvoltage concerns in systems with voltage transients or multiple supply rails.

Q: Do all substitutes maintain the same propagation delay?

A: No. Propagation delay varies across substitutes. CD4093BCM specifies 160ns at 15V with 50pF load. Faster alternatives include MC14093BDG (80ns), HEC4093BT variants (60ns), and CD4093BM96 (130ns). Faster propagation delay improves switching speed but does not affect functional compatibility in most applications.

Q: Is RoHS compliance required for my application?

A: RoHS compliance depends on end-market requirements. CD4093BM96, CD4093BMT, CD4093BNSR, and automotive variants carry ROHS3 Compliant status. MC14093BDG and MC14093BDR2G also carry ROHS3 Compliant status. Original CD4093BCM does not specify RoHS status. Verify compliance requirements with your procurement or regulatory team.

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