CD4066BPWG4 Equivalent & Substitute Parts

Part Overview

The CD4066BPWG4 is a quad bilateral switch IC manufactured by Texas Instruments, designed for analog signal switching applications in the 4000B logic series. This device features four independent SPST (Single Pole Single Throw) switch circuits with 1:1 multiplexer/demultiplexer configuration, operating across a supply voltage range of 3V to 18V with a maximum on-state resistance of 240Ohm.

The CD4066BPWG4 carries an Obsolete product status, making equivalent and substitute parts necessary for new designs and ongoing production requirements. Alternative parts are available with Active or Last Time Buy status, offering improved availability and extended lifecycle support.

Key Parameters

Parameter	Value
Manufacturer Part Number	CD4066BPWG4
Manufacturer	Texas Instruments
Category	Interface
Series	4000B
Product Status	Obsolete
Switch Circuit Type	SPST
Number of Circuits	4
Multiplexer/Demultiplexer Circuit	1:1
On-State Resistance (Max)	240Ohm
Channel-to-Channel Matching (ΔRon)	5Ohm
Voltage - Supply, Single (V+)	3V ~ 18V
-3dB Bandwidth	40MHz
Channel Capacitance (CS(off), CD(off))	8pF
Operating Temperature	-55°C ~ 125°C
Mounting Type	Surface Mount
Package / Case	14-TSSOP (0.173", 4.40mm Width)
RoHS Status	ROHS3 Compliant
Moisture Sensitivity Level (MSL)	1 (Unlimited)

Substitute Part Grouping Explanation

Substitution for the CD4066BPWG4 is determined by the following critical parameters:

Primary Substitution Criteria:

Switch circuit type (SPST)
Number of independent circuits (4)
Multiplexer/demultiplexer configuration (1:1)
Package type (14-TSSOP)
Operating temperature range (-55°C ~ 125°C)
Supply voltage compatibility (3V ~ 18V minimum)
Surface mount mounting type
RoHS3 compliance and MSL rating

Substitute Categories:

MFR Recommended Substitutes (Direct Packaging Alternatives):

CD4066BPW: Same base product (CD4066) with Tube packaging, Last Time Buy status
CD4066BPWR: Same base product (CD4066) with Cut Tape & Digi-Reel packaging, Active status

Direct Manufacturer Equivalents (Alternative Manufacturers):

MC14066BDTR2G: onsemi equivalent, 4000B series, identical electrical specifications, Tape & Reel packaging, Active status

Parametric Equivalents (Enhanced Performance Alternatives):

MC74HC4066ADTR2G: onsemi HC-series variant with reduced on-state resistance (70Ohm vs 240Ohm), higher bandwidth (160MHz vs 40MHz), narrower supply range (2V ~ 12V), Active status
MC74VHC4066DTR2G: onsemi VHC-series variant with reduced on-state resistance (70Ohm vs 240Ohm), higher bandwidth (160MHz vs 40MHz), narrower supply range (2V ~ 12V), Active status
CD4016BPW: Texas Instruments alternative with identical electrical specifications, Last Time Buy status

Parameter Comparison

Parameter	CD4066BPWG4	CD4066BPW	CD4066BPWR	MC14066BDTR2G	MC74HC4066ADTR2G	MC74VHC4066DTR2G	CD4016BPW
Manufacturer	Texas Instruments	Texas Instruments	Texas Instruments	onsemi	onsemi	onsemi	Texas Instruments
Product Status	Obsolete	Last Time Buy	Active	Active	Active	Active	Last Time Buy
Switch Circuit Type	SPST	SPST	SPST	Bilateral, FET Switches	SPST - NO	SPST - NO	Bilateral, FET Switches
Number of Circuits	4	4	4	4	4	4	4
Multiplexer/Demultiplexer Circuit	1:1	1:1	1:1	1 x 1:1	1:1	1:1	1 x 1:1
On-State Resistance (Max)	240Ohm	240Ohm	240Ohm	-	70Ohm	70Ohm	-
Channel-to-Channel Matching (ΔRon)	5Ohm	5Ohm	5Ohm	-	15Ohm	15Ohm	-
Voltage - Supply, Single (V+)	3V ~ 18V	3V ~ 18V	3V ~ 18V	3V ~ 18V	2V ~ 12V	2V ~ 12V	3V ~ 18V
-3dB Bandwidth	40MHz	40MHz	40MHz	-	160MHz	160MHz	-
Channel Capacitance (CS(off), CD(off))	8pF	8pF	8pF	-	10pF	10pF	-
Current - Leakage (IS(off)) (Max)	-	-	-	-	100nA	100nA	-
Crosstalk	-	-	-	-	-80dB @ 1MHz	-	-
Operating Temperature	-55°C ~ 125°C	-55°C ~ 125°C	-55°C ~ 125°C	-55°C ~ 125°C	-55°C ~ 125°C (TA)	-55°C ~ 125°C (TA)	-55°C ~ 125°C
Mounting Type	Surface Mount	Surface Mount	Surface Mount	Surface Mount	Surface Mount	Surface Mount	Surface Mount
Package / Case	14-TSSOP	14-TSSOP	14-TSSOP	14-TSSOP	14-TSSOP	14-TSSOP	14-TSSOP
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant
Moisture Sensitivity Level (MSL)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)

Engineering Selection Recommendations

For Direct Replacement (Identical Electrical Performance):

CD4066BPWR is the primary recommended substitute. This part maintains identical electrical specifications to the CD4066BPWG4 while offering Active product status with significantly higher inventory availability (21,400 units). The Cut Tape & Digi-Reel packaging accommodates both high-volume and low-volume production requirements. This selection eliminates obsolescence risk while preserving all original design parameters.

CD4066BPW provides an alternative with Last Time Buy status and Tube packaging, suitable for applications where packaging format is not a constraint. Inventory availability is lower (1,299 units) compared to CD4066BPWR.

For Cross-Manufacturer Equivalence:

MC14066BDTR2G (onsemi) delivers identical electrical specifications to the CD4066BPWG4 within the 4000B series, with Active product status and Tape & Reel packaging. This option provides supply chain diversification while maintaining full parameter compatibility.

For Enhanced Performance Applications:

MC74HC4066ADTR2G and MC74VHC4066DTR2G offer reduced on-state resistance (70Ohm vs 240Ohm) and significantly higher bandwidth (160MHz vs 40MHz). These parts are suitable only for applications operating within the narrower supply voltage range of 2V to 12V. Both parts carry Active status with substantial inventory availability. Selection of these variants requires circuit redesign validation to confirm compatibility with the reduced supply voltage specification.

For Legacy System Maintenance:

CD4016BPW provides parametric equivalence with Last Time Buy status. This part is suitable for maintenance and repair of existing systems where the CD4066BPWG4 was originally specified.

All recommended substitutes maintain ROHS3 compliance, MSL rating of 1 (Unlimited), and identical operating temperature range (-55°C ~ 125°C), ensuring regulatory and environmental compatibility.

Frequently Asked Questions (FAQ)

Q: Can CD4066BPWR be used as a direct replacement for CD4066BPWG4?

A: Yes. CD4066BPWR is a direct electrical equivalent with identical on-state resistance (240Ohm), channel-to-channel matching (5Ohm), bandwidth (40MHz), and supply voltage range (3V ~ 18V). The only difference is packaging format (Cut Tape & Digi-Reel vs the original packaging) and product status (Active vs Obsolete). Pin configuration and functional performance are identical.

Q: What is the difference between CD4066 and MC74HC4066A variants?

A: Both are quad bilateral switch ICs in 14-TSSOP packages with four independent circuits. The primary differences are: (1) On-state resistance: CD4066 has 240Ohm maximum, MC74HC4066A has 70Ohm maximum; (2) Bandwidth: CD4066 has 40MHz, MC74HC4066A has 160MHz; (3) Supply voltage: CD4066 operates 3V ~ 18V, MC74HC4066A operates 2V ~ 12V. The MC74HC4066A is suitable only for applications within its narrower supply voltage specification.

Q: Are all substitute parts available in the same 14-TSSOP package?

A: Yes. All listed substitute parts are available in 14-TSSOP (0.173", 4.40mm Width) surface mount package. Pin-to-pin compatibility is maintained across all substitutes, allowing direct PCB footprint reuse.

Q: What is the product status significance for component selection?

A: Product status indicates lifecycle phase. Obsolete parts (CD4066BPWG4) have reached end-of-life with no further manufacturing. Last Time Buy parts (CD4066BPW, CD4016BPW) have limited remaining inventory before discontinuation. Active parts (CD4066BPWR, MC14066BDTR2G, MC74HC4066ADTR2G, MC74VHC4066DTR2G) are in full production with ongoing availability. For new designs, Active status parts are recommended to ensure long-term supply chain stability.

Q: Can MC14066BDTR2G replace CD4066BPWG4 in all applications?

A: Yes. MC14066BDTR2G is a direct equivalent from onsemi within the 4000B series, maintaining identical electrical specifications including supply voltage range (3V ~ 18V), operating temperature (-55°C ~ 125°C), and package type (14-TSSOP). Cross-manufacturer substitution is supported by equivalent parametric performance.

Q: What are the compliance certifications for all substitute parts?

A: All substitute parts listed maintain ROHS3 compliance, indicating restriction of hazardous substances compliance. All parts carry Moisture Sensitivity Level (MSL) rating of 1 (Unlimited), indicating no moisture sensitivity constraints during storage and handling. REACH status is Unaffected for all parts, confirming no REACH substance of concern restrictions.

Request Quote (Ships tomorrow)

Part Number

Quantity

Company

Contact Name

E-mail

Message