74HC4066N,652 Equivalent & Substitute Parts

Part Overview

The 74HC4066N,652 is a 4-circuit SPST-NO analog switch IC manufactured by NXP USA Inc., designed for signal routing and multiplexing applications in the 2V to 10V supply range. This part is classified as obsolete, making equivalent and substitute parts necessary for new designs and ongoing production support. The device features 95Ohm on-state resistance, 200MHz bandwidth, and operates across -40°C to 125°C, suitable for general-purpose switching applications requiring moderate speed and low crosstalk performance.

Key Parameters

Parameter	Value
Switch Circuit Type	SPST - NO
Number of Circuits	4
Multiplexer/Demultiplexer Circuit	1:1
On-State Resistance (Max)	95Ohm
Voltage - Supply, Single (V+)	2V ~ 10V
Switch Time (Ton, Toff) (Max)	30ns, 20ns
-3dB Bandwidth	200MHz
Channel Capacitance (CS(off), CD(off))	4.6pF
Current - Leakage (IS(off)) (Max)	1µA
Crosstalk	-60dB @ 1MHz
Operating Temperature	-40°C ~ 125°C (TA)
Package / Case	14-DIP (0.300", 7.62mm)
RoHS Status	ROHS3 Compliant

Substitute Part Grouping Explanation

Substitution for the 74HC4066N,652 is determined by the following critical parameters:

Switch topology: SPST-NO configuration with 4 independent circuits
Multiplexer ratio: 1:1 circuit architecture
Supply voltage range: Minimum 2V operation required; parts supporting 10V or higher are compatible
Package compatibility: 14-DIP through-hole form factor (0.300", 7.62mm)
On-state resistance: Parts with lower resistance (10Ohm to 70Ohm) provide improved performance; higher resistance (170Ohm) represents functional but degraded performance
Operating temperature: Parts rated to -40°C minimum and 85°C or higher maximum are compatible
Compliance: ROHS3 compliance required for regulatory alignment

Substitute parts are grouped into three categories based on on-state resistance performance relative to the original 95Ohm specification:

Category A (Lower Resistance - Enhanced Performance): MAX4614CPD+, MAX4614EPD+ (10Ohm), MAX4066ACPD+, MAX4066CPD+ (45Ohm), MAX4620EPD+ (70Ohm)

Category B (Equivalent Resistance - Direct Replacement): CD74HC4066E (70Ohm), SN74HC4066N (30Ohm typical)

Category C (Higher Resistance - Degraded Performance): CD74HC4016E (170Ohm)

Parameter Comparison

Part Number	Manufacturer	On-State Resistance (Max)	Voltage - Supply, Single (V+)	Switch Time Ton/Toff (Max)	-3dB Bandwidth	Operating Temperature	Product Status	Package
74HC4066N,652	NXP USA Inc.	95Ohm	2V ~ 10V	30ns, 20ns	200MHz	-40°C ~ 125°C	Obsolete	14-DIP
CD74HC4066E	Texas Instruments	70Ohm	2V ~ 10V	-	200MHz	-55°C ~ 125°C	Last Time Buy	14-DIP
CD74HC4016E	Texas Instruments	170Ohm	2V ~ 10V	-	20MHz	-55°C ~ 125°C	Last Time Buy	14-DIP
MAX4066ACPD+	Analog Devices Inc./Maxim Integrated	45Ohm	2V ~ 16V	100ns, 75ns	100MHz	0°C ~ 70°C	Active	14-DIP
MAX4066CPD+	Analog Devices Inc./Maxim Integrated	45Ohm	2V ~ 16V	100ns, 75ns	100MHz	0°C ~ 70°C	Active	14-DIP
MAX4614CPD+	Analog Devices Inc./Maxim Integrated	10Ohm	2V ~ 5.5V	12ns, 10ns	70MHz	0°C ~ 70°C	Active	14-DIP
MAX4614EPD+	Analog Devices Inc./Maxim Integrated	10Ohm	2V ~ 5.5V	12ns, 10ns	70MHz	-40°C ~ 85°C	Active	14-DIP
MAX4620EPD+	Analog Devices Inc./Maxim Integrated	70Ohm	2V ~ 12V	15ns, 10ns	-	-40°C ~ 85°C	Active	14-DIP
SN74HC4066N	Texas Instruments	30Ohm (Typ)	2V ~ 6V	31ns, 34ns	30MHz	-40°C ~ 85°C	Last Time Buy	14-DIP
TC4066BP-NF	Toshiba Semiconductor and Storage	-	3V ~ 18V (Dual Supply)	-	-	-40°C ~ 85°C	Active	14-DIP

Engineering Selection Recommendations

For direct replacement with equivalent performance: CD74HC4066E (Texas Instruments) provides the closest functional match with 70Ohm on-state resistance, identical 200MHz bandwidth, and extended temperature range (-55°C to 125°C). This part maintains ROHS3 compliance and is available in higher inventory quantities.

For active production designs requiring long-term availability: MAX4066CPD+ or MAX4066ACPD+ (Analog Devices Inc./Maxim Integrated) are recommended. Both feature active product status, lower on-state resistance (45Ohm), extended supply voltage range (2V to 16V), and ROHS3 compliance. Operating temperature is limited to 0°C to 70°C, which may restrict use in extended temperature applications.

For low-resistance applications: MAX4614CPD+ or MAX4614EPD+ offer the lowest on-state resistance (10Ohm) with fastest switching times (12ns/10ns). MAX4614EPD+ extends the operating temperature to -40°C to 85°C, matching the original part's lower temperature limit. Supply voltage is restricted to 2V to 5.5V.

For high-voltage applications: MAX4620EPD+ supports 2V to 12V supply range with 70Ohm resistance and active product status. Operating temperature range is -40°C to 85°C.

For legacy system maintenance: SN74HC4066N (Texas Instruments) maintains the 14-DIP package and -40°C lower temperature limit. On-state resistance is 30Ohm typical, with reduced bandwidth (30MHz) and supply voltage limited to 2V to 6V.

Not recommended for new designs: CD74HC4016E exhibits significantly higher on-state resistance (170Ohm) and reduced bandwidth (20MHz), representing degraded performance. TC4066BP-NF operates on dual supply (3V to 18V) rather than single supply, requiring circuit redesign.

Frequently Asked Questions (FAQ)

Q: Can MAX4614CPD+ replace 74HC4066N,652 in all applications?

A: MAX4614CPD+ is functionally compatible for SPST-NO switching but has two critical limitations: supply voltage is restricted to 2V to 5.5V (versus the original 2V to 10V), and operating temperature is limited to 0°C to 70°C. Use MAX4614EPD+ if -40°C operation is required. Both parts are not suitable for applications requiring supply voltages above 5.5V.

Q: What is the difference between CD74HC4066E and SN74HC4066N?

A: Both are Texas Instruments 4-circuit SPST-NO switches in 14-DIP packages. CD74HC4066E has 70Ohm on-state resistance and 200MHz bandwidth with extended temperature range (-55°C to 125°C). SN74HC4066N has 30Ohm typical resistance and 30MHz bandwidth with temperature range -40°C to 85°C. CD74HC4066E is preferred for high-frequency applications; SN74HC4066N is preferred for lower-frequency designs requiring lower resistance.

Q: Is TC4066BP-NF compatible with the original 74HC4066N,652?

A: TC4066BP-NF is not a direct substitute. It operates on dual supply (3V to 18V) rather than single supply (2V to 10V), requiring circuit redesign. The part is functionally a bilateral FET switch with 4 independent 1:1 circuits, but supply architecture differences prevent drop-in replacement.

Q: Which substitute part has the best crosstalk performance?

A: MAX4614CPD+ and MAX4614EPD+ offer the best crosstalk performance at -96dB @ 100kHz. The original 74HC4066N,652 specifies -60dB @ 1MHz. CD74HC4066E provides -72dB @ 1MHz, and MAX4066CPD+ provides -86dB @ 1MHz. Crosstalk measurement frequency differs across datasheets, making direct comparison at identical frequencies necessary for critical applications.

Q: Can I use MAX4066ACPD+ and MAX4066CPD+ interchangeably?

A: Yes. Both parts are electrically identical with 45Ohm on-state resistance, 2V to 16V supply range, 100ns/75ns switching times, and 100MHz bandwidth. Both operate at 0°C to 70°C and carry ROHS3 compliance. The parts are functionally interchangeable.

Q: What is the impact of using CD74HC4016E instead of the original part?

A: CD74HC4016E has 170Ohm on-state resistance (1.8× higher than the original 95Ohm) and 20MHz bandwidth (10% of the original 200MHz). This represents significant performance degradation. Use only if supply voltage range (2V to 10V) and temperature range (-55°C to 125°C) are critical requirements and the application can tolerate higher resistance and reduced bandwidth.

Q: Are all substitute parts ROHS3 compliant?

A: Yes. All listed substitute parts carry ROHS3 compliance certification, matching the original 74HC4066N,652 compliance status.

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