MM74HC4066N Equivalent & Substitute Parts

Part Overview

The MM74HC4066N is a 4-circuit SPST-NO analog switch IC manufactured by onsemi, housed in a 14-pin DIP package. This component functions as a digitally controlled analog switch with 70Ohm on-state resistance and operates across a 2V to 12V single supply voltage range. The product is classified as obsolete, making equivalent and substitute parts necessary for ongoing design support and procurement continuity.

Substiute Parts

MM74HC4066N

onsemiIn Stock: 2353MM74HC4066N Datasheet

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CD74HC4066E

Texas InstrumentsIn Stock: 2089CD74HC4066E Datasheet

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MAX4066CPD+

Analog Devices Inc./Maxim IntegratedIn Stock: 1161MAX4066CPD+ Datasheet

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SN74HC4066N

Texas InstrumentsIn Stock: 2181SN74HC4066N Datasheet

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TC4066BP-NF

Toshiba Semiconductor and StorageIn Stock: 1527TC4066BP-NF Datasheet

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TC74HC4066APF

Toshiba Semiconductor and StorageIn Stock: 3681TC74HC4066APF Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the MM74HC4066N is determined by the following critical parameters:

• Switch Circuit Type: Must be SPST - NO configuration
• Number of Circuits: Must be 4 independent circuits
• Multiplexer/Demultiplexer Circuit: Must be 1:1 ratio
• Package / Case: Must be 14-DIP (0.300", 7.62mm) for mechanical compatibility
• Mounting Type: Must be Through Hole
• On-State Resistance (Max): Acceptable range 30Ohm to 80Ohm (within typical application tolerances)
• Voltage - Supply, Single (V+): Must support minimum 2V to 12V range or broader
• Operating Temperature: Must support -40°C to 85°C minimum

Substitute parts are grouped into two categories:

Category A - Direct Functional Equivalents (SPST-NO, 4-Circuit, 1:1 Multiplexer)

• CD74HC4066E (Texas Instruments)
• MAX4066CPD+ (Analog Devices Inc./Maxim Integrated)
• SN74HC4066N (Texas Instruments)
• TC74HC4066APF (Toshiba Semiconductor and Storage)

Category B - Functional Equivalent with Extended Supply Capability

• TC4066BP-NF (Toshiba Semiconductor and Storage) - Bilateral FET switch with dual supply support

Parameter Comparison

Engineering Selection Recommendations

For Active Production and New Designs:

MAX4066CPD+ is the preferred substitute. It maintains active product status, offers the lowest on-state leakage current (1nA), superior crosstalk performance (-86dB @ 1MHz), and the widest single supply voltage range (2V ~ 16V). RoHS3 compliance and MSL rating of 1 (Unlimited) support modern manufacturing requirements.

TC74HC4066APF provides an alternative active option with performance characteristics closely aligned to the MM74HC4066N, including matching channel-to-channel resistance (5Ohm) and identical operating temperature range (-40°C ~ 85°C). This part offers superior bandwidth (200MHz) and faster switch times compared to the original.

For Legacy System Support and Maintenance:

CD74HC4066E and SN74HC4066N are available as Last Time Buy options. Both maintain 14-DIP package compatibility and ROHS3 compliance. CD74HC4066E supports extended operating temperature range (-55°C ~ 125°C), while SN74HC4066N matches the original operating temperature specification.

For Dual Supply Applications:

TC4066BP-NF is suitable only for designs requiring dual supply operation (3V ~ 18V). This part is classified as a bilateral FET switch rather than a standard SPST-NO switch and should be selected only when dual supply capability is a system requirement.

Frequently Asked Questions (FAQ)

Q: Can I directly replace MM74HC4066N with any of the listed substitutes?

A: Direct replacement is possible only with parts maintaining identical package (14-DIP), mounting type (Through Hole), circuit configuration (SPST-NO, 4-circuit, 1:1), and compatible voltage supply ranges. MAX4066CPD+, CD74HC4066E, SN74HC4066N, and TC74HC4066APF meet these criteria. TC4066BP-NF requires design review due to its bilateral FET switch topology and dual supply requirement.

Q: What is the difference between on-state resistance specifications?

A: On-state resistance directly affects signal attenuation and power dissipation. The MM74HC4066N specifies 70Ohm maximum. Substitutes range from 30Ohm (SN74HC4066N) to 80Ohm (TC74HC4066APF). Lower resistance reduces signal loss; higher resistance increases power consumption. Selection depends on application bandwidth and signal level requirements.

Q: Are all substitutes RoHS3 compliant?

A: All listed substitutes except the main part (MM74HC4066N) are RoHS3 compliant. This compliance is mandatory for new designs and procurement in regulated markets.

Q: Which substitute offers the best leakage current performance?

A: MAX4066CPD+ provides the lowest off-state leakage current at 1nA, compared to the MM74HC4066N at 20nA. This characteristic is critical for low-power and precision analog applications.

Q: Can I use TC4066BP-NF as a direct replacement?

A: TC4066BP-NF is not a direct replacement. It is a bilateral FET switch requiring dual supply operation (3V ~ 18V), whereas the MM74HC4066N operates on single supply (2V ~ 12V). Use TC4066BP-NF only when dual supply capability is a system design requirement.

Q: What is the significance of crosstalk specifications?

A: Crosstalk measures signal coupling between independent circuits at 1MHz. Lower values indicate better channel isolation. MAX4066CPD+ (-86dB) provides superior isolation compared to MM74HC4066N (-50dB), beneficial for multi-channel applications requiring minimal inter-channel interference.

Q: Are there packaging alternatives to 14-DIP?

A: All listed substitutes are available only in 14-DIP (0.300", 7.62mm) Through Hole package. No surface-mount alternatives are provided in this substitute list.

Q: Which substitute is recommended for new designs?

A: MAX4066CPD+ is recommended for new designs due to active product status, superior electrical performance, extended supply voltage range, and full RoHS3 compliance. For cost-sensitive applications matching the original specifications, TC74HC4066APF is an active alternative.