MAX4066ACPD Equivalent & Substitute Parts

Part Overview

The MAX4066ACPD is a 4-circuit SPST-NO analog switch IC manufactured by Analog Devices Inc./Maxim Integrated, designed for signal routing and multiplexing applications. This device features a 1:1 multiplexer/demultiplexer configuration with 45Ohm on-state resistance and operates across a 2V to 16V single supply range. The MAX4066ACPD is classified as obsolete, necessitating identification of functionally equivalent alternatives for new designs and ongoing production requirements.

Key Parameters

Parameter	Value
Switch Circuit Type	SPST - NO
Number of Circuits	4
Multiplexer/Demultiplexer Configuration	1:1
On-State Resistance (Max)	45Ohm
Channel-to-Channel Matching (ΔRon)	500mOhm
Voltage - Supply, Single (V+)	2V ~ 16V
Switch Time (Ton, Toff) (Max)	100ns, 75ns
-3dB Bandwidth	100MHz
Charge Injection	1pC
Channel Capacitance (CS(off), CD(off))	9pF, 9pF
Current - Leakage (IS(off)) (Max)	100pA
Crosstalk	-86dB @ 1MHz
Operating Temperature	0°C ~ 70°C (TA)
Package / Case	14-DIP (0.300", 7.62mm)
Mounting Type	Through Hole
RoHS Status	RoHS non-compliant

Substitute Part Grouping Explanation

Substitution eligibility for the MAX4066ACPD is determined by the following critical parameters:

Switch circuit topology (SPST - NO configuration)
Number of circuits (4 independent switches)
Multiplexer/demultiplexer ratio (1:1)
On-state resistance compatibility (45Ohm nominal)
Channel-to-channel matching tolerance (500mOhm)
Supply voltage range (minimum 2V ~ 16V support)
Package form factor (14-DIP through-hole)
Pin-to-pin compatibility

Substitute parts must maintain electrical equivalence within these parameters while accommodating minor variations in secondary characteristics such as bandwidth, leakage current, and operating temperature range.

Parameter Comparison

Parameter	MAX4066ACPD (Main)	MAX4066ACPD+ (Direct)	CD74HC4066E (Alternative)
Manufacturer	Analog Devices Inc./Maxim Integrated	Analog Devices Inc./Maxim Integrated	Texas Instruments
Switch Circuit Type	SPST - NO	SPST - NO	SPST - NO
Number of Circuits	4	4	4
Multiplexer Configuration	1:1	1:1	1:1
On-State Resistance (Max)	45Ohm	45Ohm	70Ohm
Channel-to-Channel Matching (ΔRon)	500mOhm	500mOhm	500mOhm
Voltage - Supply, Single (V+)	2V ~ 16V	2V ~ 16V	2V ~ 10V
Switch Time (Ton, Toff) (Max)	100ns, 75ns	100ns, 75ns	Not specified
-3dB Bandwidth	100MHz	100MHz	200MHz
Charge Injection	1pC	1pC	Not specified
Channel Capacitance (CS(off), CD(off))	9pF, 9pF	9pF, 9pF	5pF
Current - Leakage (IS(off)) (Max)	100pA	100pA	100nA
Crosstalk	-86dB @ 1MHz	-86dB @ 1MHz	-72dB @ 1MHz
Operating Temperature	0°C ~ 70°C (TA)	0°C ~ 70°C (TA)	-55°C ~ 125°C (TA)
Package / Case	14-DIP (0.300", 7.62mm)	14-DIP (0.300", 7.62mm)	14-DIP (0.300", 7.62mm)
Mounting Type	Through Hole	Through Hole	Through Hole
Product Status	Obsolete	Active	Last Time Buy
RoHS Status	RoHS non-compliant	ROHS3 Compliant	ROHS3 Compliant

Engineering Selection Recommendations

MAX4066ACPD+ (Direct Substitute)

The MAX4066ACPD+ is the direct functional equivalent of the MAX4066ACPD, manufactured by the same supplier with identical electrical specifications. This part maintains 45Ohm on-state resistance, 2V to 16V supply voltage range, and all switching characteristics. The MAX4066ACPD+ carries Active product status and ROHS3 compliance, making it the preferred choice for new designs and production continuity. Packaging is supplied in tube format.

CD74HC4066E (Alternative Substitute)

The CD74HC4066E from Texas Instruments provides functional substitution with the following considerations: on-state resistance is specified at 70Ohm (versus 45Ohm), representing a 55% increase in channel resistance. Supply voltage range is limited to 2V to 10V, restricting operation in applications requiring voltages above 10V. The CD74HC4066E exhibits higher leakage current (100nA versus 100pA) and lower crosstalk performance (-72dB versus -86dB at 1MHz). Operating temperature range extends to -55°C to 125°C. This part carries Last Time Buy status and ROHS3 compliance. Selection of CD74HC4066E requires verification that the 70Ohm on-state resistance and 2V to 10V supply range are compatible with circuit requirements.

Frequently Asked Questions (FAQ)

Q: Can MAX4066ACPD+ be used as a direct replacement for MAX4066ACPD?

A: Yes. The MAX4066ACPD+ is electrically and mechanically identical to the MAX4066ACPD, with identical on-state resistance (45Ohm), supply voltage range (2V to 16V), switching times, and all other critical parameters. The primary difference is product status (Active versus Obsolete) and RoHS compliance (ROHS3 versus non-compliant). Pin-to-pin compatibility is confirmed.

Q: What are the limitations of using CD74HC4066E as a substitute?

A: The CD74HC4066E introduces three significant parameter deviations: (1) on-state resistance increases from 45Ohm to 70Ohm, which may affect signal attenuation and impedance matching in precision applications; (2) supply voltage range is restricted to 2V to 10V, eliminating compatibility with circuits operating above 10V; (3) leakage current increases from 100pA to 100nA, which may impact low-signal applications. Crosstalk performance is also reduced from -86dB to -72dB at 1MHz.

Q: Are all substitute parts available in 14-DIP through-hole packaging?

A: Yes. Both MAX4066ACPD+ and CD74HC4066E are supplied in 14-DIP (0.300", 7.62mm) through-hole packages, maintaining mechanical compatibility with existing PCB layouts and socket configurations.

Q: What is the difference between MAX4066ACPD and MAX4066ACPD+ packaging?

A: The MAX4066ACPD is supplied in standard packaging, while MAX4066ACPD+ is supplied in tube packaging. Both maintain identical electrical specifications and 14-DIP form factor. Tube packaging is standard for active production parts.

Q: Should RoHS compliance status influence part selection?

A: RoHS compliance status is determined by regulatory requirements applicable to the end application and market. The MAX4066ACPD is RoHS non-compliant, while MAX4066ACPD+ and CD74HC4066E are ROHS3 compliant. Selection should align with applicable environmental and regulatory standards for the target application.

Q: Is the CD74HC4066E suitable for high-voltage applications?

A: No. The CD74HC4066E supply voltage range is limited to 2V to 10V, making it unsuitable for applications requiring operation above 10V. The MAX4066ACPD and MAX4066ACPD+ support 2V to 16V operation and are appropriate for higher-voltage applications within this range.

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