MM74HC4066SJ Equivalent & Substitute Parts

Part Overview

The MM74HC4066SJ is a 4-circuit SPST-NO (Single Pole Single Throw - Normally Open) analog switch manufactured by onsemi, housed in a 14-SOP package. This component functions as a general-purpose analog switch with 70Ohm on-state resistance and operates across a 2V to 12V single supply voltage range. The part is classified as obsolete, making equivalent and substitute parts necessary for ongoing design support and procurement continuity.

Substiute Parts

MM74HC4066SJ

onsemiIn Stock: 845MM74HC4066SJ Datasheet

Current PartRFQ

MAX4066AESD+T

Analog Devices Inc./Maxim IntegratedIn Stock: 707MAX4066AESD+T Datasheet

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SN74HC4066D

Texas InstrumentsIn Stock: 2298SN74HC4066D Datasheet

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SN74HC4066DR

Texas InstrumentsIn Stock: 32270SN74HC4066DR Datasheet

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SN74HC4066DT

Texas InstrumentsIn Stock: 2157SN74HC4066DT Datasheet

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SN74HC4066NSR

Texas InstrumentsIn Stock: 5659SN74HC4066NSR Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the MM74HC4066SJ is determined by the following core parameters:

Mandatory Compatibility Parameters:

• Switch Circuit Type: SPST - NO (required)
• Number of Circuits: 4 (required)
• Multiplexer/Demultiplexer Circuit: 1:1 (required)
• Operating Temperature Range: -40°C ~ 85°C (required)
• Mounting Type: Surface Mount (required)
• Moisture Sensitivity Level: 1 (Unlimited) (required)

Allowable Variation Parameters:

• On-State Resistance (Max): Must not exceed 70Ohm; lower values are acceptable
• Voltage - Supply, Single (V+): Must encompass or exceed the 2V ~ 12V range
• Switch Time (Ton, Toff): May vary; lower values indicate improved performance
• -3dB Bandwidth: May vary; 100MHz or higher is acceptable
• Current - Leakage (IS(off)) (Max): May vary; lower values are acceptable
• Crosstalk: May vary; values closer to -50dB or lower are acceptable
• Package / Case: 14-SOIC variants with compatible pinouts are acceptable

All substitute parts listed below meet the mandatory compatibility parameters and fall within allowable variation ranges for electrical performance.

Parameter Comparison

Engineering Selection Recommendations

MAX4066AESD+T (Analog Devices Inc./Maxim Integrated)

This part is the preferred substitute for new designs. It maintains active product status with ROHS3 compliance and offers superior electrical performance: 45Ohm on-state resistance, extended supply voltage range (2V ~ 16V), and exceptional crosstalk performance (-86dB @ 1MHz). The 14-SOIC package with 3.90mm width differs from the original 5.30mm width, requiring PCB layout verification. Tape & Reel packaging supports automated assembly.

SN74HC4066NSR (Texas Instruments)

This part provides the closest package compatibility with the MM74HC4066SJ, maintaining the 14-SOIC 5.30mm width. It carries Last Time Buy status with ROHS3 compliance and offers improved on-state resistance (30Ohm typical). Supply voltage range is limited to 2V ~ 6V, which may restrict applications requiring higher supply voltages. Tape & Reel packaging is available with substantial inventory (5642 pcs).

SN74HC4066DT (Texas Instruments)

This part offers Last Time Buy status with ROHS3 compliance and 30Ohm typical on-state resistance. The 14-SOIC 3.90mm package requires PCB layout adjustment. Supply voltage range is limited to 2V ~ 6V. Tape & Reel packaging supports production environments with adequate inventory (2144 pcs).

SN74HC4066DR (Texas Instruments)

This part provides Last Time Buy status with ROHS3 compliance and identical electrical specifications to SN74HC4066DT. The 14-SOIC 3.90mm package requires PCB layout adjustment. Cut Tape & Digi-Reel® packaging is available with the highest inventory level (32187 pcs), supporting high-volume procurement.

SN74HC4066D (Texas Instruments)

This part carries Last Time Buy status with ROHS3 compliance and 30Ohm typical on-state resistance. The 14-SOIC 3.90mm package requires PCB layout adjustment. Supply voltage range is limited to 2V ~ 6V. Tube packaging is available with moderate inventory (2200 pcs).

Frequently Asked Questions (FAQ)

Q: Can I directly replace MM74HC4066SJ with MAX4066AESD+T without PCB modifications?

A: No. While both parts are 14-SOIC packages, the MAX4066AESD+T uses a 3.90mm width package compared to the MM74HC4066SJ's 5.30mm width. PCB footprint adjustment is required. Pinout compatibility must be verified against the respective datasheets.

Q: What is the key difference between the Texas Instruments SN74HC4066 variants (D, DR, DT, NSR)?

A: All four variants share identical electrical specifications (30Ohm typical on-state resistance, 2V ~ 6V supply range, 31ns/34ns switch times). The differences are packaging format and width: SN74HC4066NSR maintains the 5.30mm width (matching MM74HC4066SJ), while SN74HC4066D, SN74HC4066DR, and SN74HC4066DT use 3.90mm width. Packaging options vary: Tube (D), Cut Tape & Digi-Reel® (DR), and Tape & Reel (DT, NSR).

Q: Is the MM74HC4066SJ supply voltage range (2V ~ 12V) compatible with the Texas Instruments substitutes (2V ~ 6V)?

A: The Texas Instruments parts operate only up to 6V, which is a subset of the original 2V ~ 12V range. If your application requires supply voltages above 6V, the MAX4066AESD+T (2V ~ 16V) is the only listed substitute that maintains extended voltage capability.

Q: What is the significance of the on-state resistance difference between MM74HC4066SJ (70Ohm) and the substitutes (30Ohm to 45Ohm)?

A: Lower on-state resistance reduces signal attenuation and power dissipation in the switch. All listed substitutes have lower on-state resistance than the original part, which represents improved performance. Applications sensitive to signal loss or power consumption will benefit from these lower values.

Q: Are all substitute parts RoHS3 compliant?

A: Yes. All listed substitute parts carry ROHS3 Compliant status. The original MM74HC4066SJ does not specify RoHS status. All parts maintain REACH Unaffected status and EAR99 export classification.

Q: Which substitute part has the best availability?

A: SN74HC4066DR has the highest inventory level at 32187 pcs, followed by SN74HC4066NSR at 5642 pcs. Both are available in standard packaging formats suitable for production environments.

Q: Can I use MAX4066AESD+T in applications requiring the original 5.30mm package width?

A: No. The MAX4066AESD+T uses a 3.90mm width 14-SOIC package. If the 5.30mm width is a hard requirement due to PCB layout constraints, SN74HC4066NSR is the only substitute maintaining this dimension.