MAX4665ESE Equivalent & Substitute Parts

Part Overview

The MAX4665ESE is a 4-circuit SPST-NO (Single Pole Single Throw - Normally Open) analog switch IC manufactured by Analog Devices Inc./Maxim Integrated. This component operates as a 1:1 multiplexer/demultiplexer with 4Ohm on-state resistance and is housed in a 16-SOIC surface mount package. The MAX4665ESE is classified as obsolete, making identification of functionally equivalent alternatives essential for ongoing design support and production continuity.

Key Parameters

Parameter	Value
Switch Circuit Type	SPST - NO
Number of Circuits	4
Multiplexer/Demultiplexer Configuration	1:1
On-State Resistance (Max)	4Ohm
Channel-to-Channel Matching (ΔRon)	200mOhm
Voltage - Supply, Single (V+)	4.5V ~ 36V
Voltage - Supply, Dual (V±)	±4.5V ~ 20V
Switch Time (Ton, Toff) (Max)	275ns, 175ns
Charge Injection	300pC
Channel Capacitance (CS(off), CD(off))	34pF, 34pF
Current - Leakage (IS(off)) (Max)	500pA
Crosstalk	-60dB @ 1MHz
Operating Temperature	-40°C ~ 85°C (TA)
Package / Case	16-SOIC (0.154", 3.90mm Width)
Mounting Type	Surface Mount
RoHS Status	RoHS non-compliant
Moisture Sensitivity Level (MSL)	1 (Unlimited)

Substitute Part Grouping Explanation

Substitution eligibility for the MAX4665ESE is determined by strict adherence to the following core parameters:

Critical Matching Parameters:

Switch circuit type: SPST - NO
Number of circuits: 4
Multiplexer/Demultiplexer configuration: 1:1
Package / Case: 16-SOIC (0.154", 3.90mm Width)
Mounting type: Surface Mount
Operating temperature range: -40°C ~ 85°C (TA)

Allowable Variation Parameters:

On-state resistance (Max): Up to 5Ohm (from 4Ohm baseline)
Channel-to-channel matching (ΔRon): 100mOhm to 200mOhm
Voltage supply ranges: Single supply 12V or dual supply ±4.5V ~ 20V
Switch time: 140ns to 275ns (Toff), 180ns to 275ns (Ton)
Charge injection: 20pC to 300pC
Channel capacitance: 34pF to 37pF
Crosstalk: -60dB to -90dB @ 1MHz
Leakage current: 500pA (fixed)

Substitute parts must maintain identical package geometry, pin configuration, and functional circuit topology. Variations in electrical performance characteristics within the specified ranges do not preclude substitution.

Parameter Comparison

Parameter	MAX4665ESE	MAX4665ESE+	ADG452BRZ	ADG452BRZ-REEL	ADG452BRZ-REEL7
Manufacturer	Analog Devices Inc./Maxim Integrated	Analog Devices Inc./Maxim Integrated	Analog Devices Inc.	Analog Devices Inc.	Analog Devices Inc.
Product Status	Obsolete	Active	Active	Active	Active
Switch Circuit Type	SPST - NO	SPST - NO	SPST - NO	SPST - NO	SPST - NO
Number of Circuits	4	4	4	4	4
Multiplexer/Demultiplexer Configuration	1:1	1:1	1:1	1:1	1:1
On-State Resistance (Max)	4Ohm	4Ohm	5Ohm	5Ohm	5Ohm
Channel-to-Channel Matching (ΔRon)	200mOhm	200mOhm	100mOhm	100mOhm	100mOhm
Voltage - Supply, Single (V+)	4.5V ~ 36V	4.5V ~ 36V	12V	12V	12V
Voltage - Supply, Dual (V±)	±4.5V ~ 20V	±4.5V ~ 20V	±4.5V ~ 20V	±4.5V ~ 20V	±4.5V ~ 20V
Switch Time (Ton, Toff) (Max)	275ns, 175ns	275ns, 175ns	180ns, 140ns	180ns, 140ns	180ns, 140ns
Charge Injection	300pC	300pC	20pC	20pC	20pC
Channel Capacitance (CS(off), CD(off))	34pF, 34pF	34pF, 34pF	37pF, 37pF	37pF, 37pF	37pF, 37pF
Current - Leakage (IS(off)) (Max)	500pA	500pA	500pA	500pA	500pA
Crosstalk	-60dB @ 1MHz	-60dB @ 1MHz	-90dB @ 1MHz	-90dB @ 1MHz	-90dB @ 1MHz
Operating Temperature	-40°C ~ 85°C (TA)	-40°C ~ 85°C (TA)	-40°C ~ 85°C (TA)	-40°C ~ 85°C (TA)	-40°C ~ 85°C (TA)
Package / Case	16-SOIC (0.154", 3.90mm Width)	16-SOIC (0.154", 3.90mm Width)	16-SOIC (0.154", 3.90mm Width)	16-SOIC (0.154", 3.90mm Width)	16-SOIC (0.154", 3.90mm Width)
Mounting Type	Surface Mount	Surface Mount	Surface Mount	Surface Mount	Surface Mount
RoHS Status	RoHS non-compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant
Moisture Sensitivity Level (MSL)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)
Packaging Format	Standard	Tube	Tube	Tape & Reel (TR)	Cut Tape (CT) & Digi-Reel®

Engineering Selection Recommendations

MAX4665ESE+ (Direct Upgrade) The MAX4665ESE+ is the primary substitute for the obsolete MAX4665ESE. Both parts share identical electrical specifications and 16-SOIC package geometry. The MAX4665ESE+ is currently in active production status and carries ROHS3 compliance certification, addressing regulatory requirements that the original MAX4665ESE does not meet. This part is available in Tube packaging format.

ADG452BRZ Series (Functional Equivalent) The ADG452BRZ, ADG452BRZ-REEL, and ADG452BRZ-REEL7 represent functionally equivalent alternatives from Analog Devices Inc. These parts maintain the same 4-circuit SPST-NO topology, 1:1 multiplexer configuration, and 16-SOIC package footprint. The ADG452BRZ series exhibits improved electrical performance characteristics: reduced on-state resistance variation (100mOhm vs. 200mOhm), faster switching times (140ns/180ns vs. 175ns/275ns), lower charge injection (20pC vs. 300pC), and superior crosstalk isolation (-90dB vs. -60dB @ 1MHz). All ADG452BRZ variants are ROHS3 compliant and actively produced.

The ADG452BRZ series operates with a fixed single supply voltage of 12V, compared to the MAX4665ESE's 4.5V ~ 36V range. Dual supply operation (±4.5V ~ 20V) is supported by both families. Design circuits requiring the extended single supply voltage range of the original MAX4665ESE must use the MAX4665ESE+ substitute.

Packaging Considerations

MAX4665ESE+: Tube packaging
ADG452BRZ: Tube packaging
ADG452BRZ-REEL: Tape & Reel (TR) format for high-volume production
ADG452BRZ-REEL7: Cut Tape (CT) & Digi-Reel® format for mixed-volume applications

Frequently Asked Questions (FAQ)

Q: Can the MAX4665ESE be directly replaced with MAX4665ESE+? A: Yes. The MAX4665ESE+ is a direct functional equivalent with identical electrical specifications and package geometry. The primary difference is product status (Active vs. Obsolete) and RoHS compliance (ROHS3 vs. non-compliant). Pin-for-pin substitution is valid.

Q: What are the key differences between MAX4665ESE+ and ADG452BRZ? A: Both are 4-circuit SPST-NO switches in 16-SOIC packages with identical topology. The ADG452BRZ offers improved performance: lower on-state resistance variation (100mOhm vs. 200mOhm), faster switching (140ns/180ns vs. 175ns/275ns), reduced charge injection (20pC vs. 300pC), and better crosstalk performance (-90dB vs. -60dB @ 1MHz). The ADG452BRZ single supply is fixed at 12V, while MAX4665ESE+ supports 4.5V ~ 36V.

Q: Which substitute should I use if my design requires a wide single supply voltage range? A: Use MAX4665ESE+. It maintains the original 4.5V ~ 36V single supply range. The ADG452BRZ series is limited to 12V single supply operation.

Q: Are all substitute parts RoHS compliant? A: MAX4665ESE+ and all ADG452BRZ variants (ADG452BRZ, ADG452BRZ-REEL, ADG452BRZ-REEL7) are ROHS3 compliant. The original MAX4665ESE is RoHS non-compliant.

Q: What packaging formats are available for production? A: MAX4665ESE+ is supplied in Tube format. ADG452BRZ is available in Tube. ADG452BRZ-REEL is supplied in Tape & Reel (TR) format for high-volume automated assembly. ADG452BRZ-REEL7 is available in Cut Tape (CT) & Digi-Reel® format for flexible volume requirements.

Q: Do all substitute parts maintain the same pin configuration? A: Yes. MAX4665ESE+, ADG452BRZ, ADG452BRZ-REEL, and ADG452BRZ-REEL7 all use the 16-SOIC package with identical pin assignments, enabling direct PCB-level substitution without layout modifications.

Q: What is the impact of the 1Ohm on-state resistance increase in ADG452BRZ? A: The ADG452BRZ maximum on-state resistance is 5Ohm compared to 4Ohm for MAX4665ESE+. This 1Ohm difference affects signal attenuation and power dissipation in analog signal paths. Designs with tight impedance matching requirements or high-current switching applications should evaluate this parameter against circuit specifications.

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