SN74HC4066PW Equivalent & Substitute Parts

Part Overview

The SN74HC4066PW is a 4-circuit SPST-NO analog switch manufactured by Texas Instruments, housed in a 14-TSSOP surface mount package. This device functions as a digitally controlled analog switch with typical on-state resistance of 30Ohm, operating across a 2V to 6V single supply voltage range. The part is classified as Last Time Buy, indicating end-of-life status. Equivalent and substitute parts are necessary to ensure design continuity, maintain supply chain flexibility, and accommodate evolving manufacturing availability.

Key Parameters

Parameter	Value
Switch Circuit Type	SPST - NO (Single Pole Single Throw - Normally Open)
Number of Circuits	4
Multiplexer/Demultiplexer Configuration	1:1
On-State Resistance (Typ)	30Ohm
Supply Voltage Range (Single)	2V ~ 6V
Switch Time (Ton/Toff)	31ns / 34ns
-3dB Bandwidth	30MHz
Channel Capacitance (CS(off) / CD(off))	0.5pF / 9pF
Leakage Current (IS(off))	100nA
Crosstalk	-45dB @ 1MHz
Operating Temperature Range	-40°C ~ 85°C
Package / Case	14-TSSOP (0.173", 4.40mm Width)
Mounting Type	Surface Mount
RoHS Status	ROHS3 Compliant
Moisture Sensitivity Level	1 (Unlimited)

Substitute Part Grouping Explanation

Substitution eligibility for the SN74HC4066PW is determined by the following critical parameters:

Mandatory Compatibility Criteria:

Switch circuit type: SPST - NO
Number of circuits: 4
Multiplexer/Demultiplexer configuration: 1:1
Package / Case: 14-TSSOP (0.173", 4.40mm Width)
Mounting type: Surface Mount
RoHS Status: ROHS3 Compliant
Moisture Sensitivity Level: 1 (Unlimited)

Allowable Variation Parameters:

On-state resistance: Tolerance dependent on application requirements
Supply voltage range: Must encompass or exceed 2V ~ 6V minimum
Switch time: Application-dependent performance metric
Bandwidth: Application-dependent performance metric
Leakage current: Application-dependent performance metric
Crosstalk: Application-dependent performance metric
Operating temperature range: Must encompass or exceed -40°C ~ 85°C minimum

Substitute parts are grouped by their electrical performance characteristics while maintaining identical package and circuit topology specifications.

Parameter Comparison

Part Number	Manufacturer	On-State Resistance	Supply Voltage (V+)	Switch Time (Ton/Toff)	-3dB Bandwidth	Leakage Current	Crosstalk	Operating Temp	Product Status	Packaging
SN74HC4066PW	Texas Instruments	30Ohm (Typ)	2V ~ 6V	31ns / 34ns	30MHz	100nA	-45dB @ 1MHz	-40°C ~ 85°C	Last Time Buy	Tube
SN74HC4066PWR	Texas Instruments	30Ohm (Typ)	2V ~ 6V	31ns / 34ns	30MHz	100nA	-45dB @ 1MHz	-40°C ~ 85°C	Last Time Buy	Cut Tape (CT) & Digi-Reel®
MC74HC4066ADTR2G	onsemi	70Ohm	2V ~ 12V	—	160MHz	100nA	-80dB @ 1MHz	-55°C ~ 125°C	Active	Tape & Reel (TR)
74HC4066PW,118	Nexperia USA Inc.	95Ohm	2V ~ 10V	30ns / 20ns	200MHz	1µA	-60dB @ 1MHz	-40°C ~ 125°C	Active	Cut Tape (CT) & Digi-Reel®
74HCT4066PW-Q100,1	Nexperia USA Inc.	20Ohm (Typ)	4.5V ~ 5.5V	44ns / 30ns	200MHz	1µA	-60dB @ 1MHz	-40°C ~ 125°C	Active	Tape & Reel (TR)
MAX4737EUD+	Analog Devices Inc./Maxim Integrated	4.5Ohm	1.8V ~ 5.5V	80ns / 40ns	300MHz	500pA	-110dB @ 1MHz	-40°C ~ 85°C	Active	Tube
MAX4737EUD+T	Analog Devices Inc./Maxim Integrated	4.5Ohm	1.8V ~ 5.5V	80ns / 40ns	300MHz	500pA	-110dB @ 1MHz	-40°C ~ 85°C	Active	Tape & Reel (TR)
MAX4747EUD+	Analog Devices Inc./Maxim Integrated	25Ohm	2V ~ 11V	85ns / 45ns	250MHz	100pA	-84dB @ 1MHz	-40°C ~ 85°C	Active	Tube
MAX4747EUD+T	Analog Devices Inc./Maxim Integrated	25Ohm	2V ~ 11V	85ns / 45ns	250MHz	100pA	-84dB @ 1MHz	-40°C ~ 85°C	Active	Tape & Reel (TR)

Engineering Selection Recommendations

Direct Equivalent (Packaging Variant): SN74HC4066PWR is the direct equivalent of SN74HC4066PW, differing only in packaging format (Cut Tape & Digi-Reel® versus Tube). Both maintain identical electrical specifications and Last Time Buy status from Texas Instruments.

Active Production Alternatives: MC74HC4066ADTR2G (onsemi), 74HC4066PW,118 (Nexperia), and 74HCT4066PW-Q100,1 (Nexperia) are active production parts maintaining the 4-circuit SPST-NO topology in 14-TSSOP packaging. These parts exhibit higher on-state resistance and extended operating temperature ranges compared to the original part.

Premium Performance Alternatives: MAX4737EUD+, MAX4737EUD+T, MAX4747EUD+, and MAX4747EUD+T (Analog Devices Inc./Maxim Integrated) are active production parts offering superior electrical performance characteristics including lower on-state resistance, reduced leakage current, and improved crosstalk specifications. These parts are suitable for applications requiring enhanced signal integrity and lower power dissipation.

Compliance Considerations: All listed substitute parts maintain ROHS3 compliance and Moisture Sensitivity Level 1 (Unlimited) ratings, ensuring compatibility with standard manufacturing and storage requirements.

Frequently Asked Questions (FAQ)

Q: Can SN74HC4066PWR be used as a direct replacement for SN74HC4066PW? A: Yes. SN74HC4066PWR is electrically identical to SN74HC4066PW. The difference is packaging format: SN74HC4066PWR is supplied in Cut Tape & Digi-Reel® format, while SN74HC4066PW is supplied in Tube format. Both are Last Time Buy parts from Texas Instruments.

Q: What is the primary difference between the Texas Instruments SN74HC4066 variants and the onsemi MC74HC4066ADTR2G? A: The MC74HC4066ADTR2G exhibits higher on-state resistance (70Ohm versus 30Ohm), extended supply voltage range (2V ~ 12V versus 2V ~ 6V), and superior bandwidth (160MHz versus 30MHz). It is an active production part, whereas the SN74HC4066PW is Last Time Buy.

Q: Are the Nexperia 74HC4066PW,118 and 74HCT4066PW-Q100,1 interchangeable? A: No. The 74HCT4066PW-Q100,1 operates at a narrower supply voltage range (4.5V ~ 5.5V versus 2V ~ 10V) and is qualified to AEC-Q100 automotive standards. The 74HC4066PW,118 is a general-purpose part. Selection depends on application voltage requirements and automotive qualification needs.

Q: What advantages do the Maxim Integrated MAX4737 and MAX4747 series offer? A: The MAX4737 and MAX4747 series provide significantly lower on-state resistance (4.5Ohm and 25Ohm respectively), reduced leakage current (500pA and 100pA respectively), and superior crosstalk performance (-110dB and -84dB respectively). These characteristics reduce power dissipation and improve signal fidelity in precision analog switching applications.

Q: Can I substitute a part with higher on-state resistance without circuit modification? A: Higher on-state resistance increases voltage drop across the switch and power dissipation. Circuit performance depends on application requirements. Verify that the substitute part's on-state resistance is acceptable for your signal levels and load impedance before implementation.

Q: Are all substitute parts available in both Tube and Tape & Reel packaging? A: No. Packaging availability varies by manufacturer and part number. Verify packaging format availability with your supplier before design selection. Some parts are available exclusively in one packaging format.

Q: Do all substitute parts maintain the same operating temperature range? A: No. The original SN74HC4066PW operates from -40°C to 85°C. Some substitutes (MC74HC4066ADTR2G, Nexperia variants) extend to -55°C or 125°C. Verify that the substitute part's temperature range meets your application requirements.

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