CD4066BE Equivalent & Substitute Parts

Part Overview

The CD4066BE is a quad bilateral switch IC manufactured by Texas Instruments, belonging to the 4000B CMOS logic series. This 14-pin DIP package device functions as a 1:1 multiplexer/demultiplexer with four independent SPST switch circuits. The part is actively produced and widely used in analog signal routing, audio switching, and general-purpose analog multiplexing applications. Equivalent and substitute parts are identified when component availability is limited, supply chain disruptions occur, or design flexibility is required while maintaining functional compatibility within specified electrical and mechanical parameters.

Substiute Parts

CD4066BE

Texas InstrumentsIn Stock: 26507CD4066BE Datasheet

Current PartRFQ

CD4016BE

Texas InstrumentsIn Stock: 10263CD4016BE Datasheet

Parametric EquivalentRFQ

TC4066BP-NF

Toshiba Semiconductor and StorageIn Stock: 1527TC4066BP-NF Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the CD4066BE are qualified based on the following critical parameters that determine functional interchangeability:

Primary Substitution Criteria:

• Package compatibility: 14-DIP (0.300", 7.62mm) form factor
• Circuit configuration: 4 independent SPST switch circuits with 1:1 multiplexer/demultiplexer topology
• Supply voltage range: 3V ~ 18V single supply operation
• On-state resistance: Maximum 240Ω
• Operating temperature range: Minimum -55°C to 125°C coverage
• Mounting type: Through Hole
• RoHS3 compliance for regulatory alignment

Parts meeting these criteria are classified as parametric equivalents or manufacturer-recommended substitutes. Deviations in operating temperature range, supply voltage specifications, or package form factor disqualify parts from direct substitution in applications requiring full specification compliance.

Parameter Comparison

Engineering Selection Recommendations

CD4016BE (Texas Instruments): This part is a parametric equivalent to the CD4066BE, sharing identical supply voltage range (3V ~ 18V), operating temperature range (-55°C ~ 125°C), and 14-DIP package specifications. Both parts are active products with ROHS3 compliance. The CD4016BE is suitable for direct substitution in applications where the full temperature and voltage specifications of the CD4066BE are required. Inventory availability of 10,163 units supports consistent supply chain access.

TC4066BP-NF (Toshiba Semiconductor and Storage): This part is a manufacturer-recommended substitute offering the same 14-DIP package, 4-circuit configuration, and 3V ~ 18V supply voltage range. The operating temperature range is restricted to -40°C ~ 85°C, which is narrower than the CD4066BE specification. This part is suitable for applications operating within the -40°C to 85°C temperature window. ROHS3 compliance and active product status confirm regulatory alignment. Inventory availability of 1,453 units is available.

Selection between these substitutes depends on application temperature requirements. For full temperature range coverage (-55°C ~ 125°C), use CD4016BE. For applications limited to -40°C ~ 85°C operation, TC4066BP-NF is acceptable.

Frequently Asked Questions (FAQ)

Q: Can CD4016BE replace CD4066BE in all applications? A: Yes, within the specified electrical and mechanical parameters. Both parts share identical supply voltage (3V ~ 18V), operating temperature range (-55°C ~ 125°C), 14-DIP package form factor, and 4-circuit SPST configuration. Direct pin-for-pin substitution is supported.

Q: What is the key limitation of TC4066BP-NF as a substitute? A: The operating temperature range is limited to -40°C ~ 85°C, compared to the CD4066BE specification of -55°C ~ 125°C. Applications requiring operation below -40°C or above 85°C must use CD4016BE or the original CD4066BE.

Q: Are all substitute parts RoHS3 compliant? A: Yes. CD4016BE, TC4066BP-NF, and CD4066BE are all ROHS3 compliant, meeting current environmental and regulatory requirements.

Q: Is the 14-DIP package identical across all three parts? A: Yes. All three parts use the 14-DIP (0.300", 7.62mm) through-hole package, enabling direct mechanical and electrical substitution without PCB redesign.

Q: Which substitute should I select for high-temperature applications? A: CD4016BE supports the full temperature range of -55°C ~ 125°C, matching the CD4066BE specification. TC4066BP-NF is limited to -40°C ~ 85°C and is not suitable for high-temperature applications exceeding 85°C.

Q: Are there differences in on-state resistance between these parts? A: The CD4066BE specifies a maximum on-state resistance of 240Ω with 5Ω channel-to-channel matching. Detailed on-state resistance specifications for CD4016BE and TC4066BP-NF are not provided in the available data. Consult manufacturer datasheets for precise resistance characteristics if this parameter is critical to your application.