MAX4526ESA+ Equivalent & Substitute Parts

Part Overview

The MAX4526ESA+ is a dual SPDT (Single Pole Double Throw) analog switch IC manufactured by Analog Devices Inc./Maxim Integrated. This interface component provides 2:1 multiplexing functionality with 175Ohm on-state resistance in an 8-SOIC surface mount package. The device is classified as Active product status with full RoHS3 compliance and unlimited moisture sensitivity rating (MSL 1). Alternative part identification becomes necessary for supply chain continuity, inventory management, or regional component availability.

Key Parameters

Parameter	Specification
Switch Circuit Configuration	SPDT (Single Pole Double Throw)
Multiplexer/Demultiplexer Circuit	2:1
Number of Circuits	2
On-State Resistance (Max)	175Ohm
Channel-to-Channel Matching (ΔRon)	500mOhm
Supply Voltage - Single (V+)	4.5V ~ 36V
Supply Voltage - Dual (V±)	±4.5V ~ 18V
Charge Injection	1pC
Channel Capacitance (CS(off), CD(off))	13pF
Current - Leakage (IS(off)) (Max)	500pA
Operating Temperature Range	-40°C ~ 85°C (TA)
Package / Case	8-SOIC (0.154", 3.90mm Width)
Mounting Type	Surface Mount
RoHS Status	ROHS3 Compliant
Moisture Sensitivity Level (MSL)	1 (Unlimited)

Substitute Part Grouping Explanation

Substitution eligibility for the MAX4526ESA+ is determined by strict equivalence across the following critical parameters:

Switch circuit topology: SPDT configuration with 2:1 multiplexing capability
Electrical performance: 175Ohm maximum on-state resistance with 500mOhm channel matching tolerance
Supply voltage compatibility: Single supply 4.5V ~ 36V or dual supply ±4.5V ~ 18V operation
Signal integrity specifications: 1pC charge injection, 13pF channel capacitance, 500pA maximum leakage current
Thermal operating range: -40°C to 85°C ambient temperature
Physical form factor: 8-SOIC surface mount package with 0.154" (3.90mm) width
Regulatory compliance: RoHS3 compliance and MSL 1 rating

Only components meeting all specified parameters qualify as direct substitutes. The MAX4526ESA+ represents the baseline reference for this substitution group.

Parameter Comparison

Parameter	MAX4526ESA+ (Main Part)	MAX4526ESA+ (Substitute)
Manufacturer	Analog Devices Inc./Maxim Integrated	Analog Devices Inc./Maxim Integrated
Switch Circuit	SPDT	SPDT
Multiplexer/Demultiplexer Circuit	2:1	2:1
Number of Circuits	2	2
On-State Resistance (Max)	175Ohm	175Ohm
Channel-to-Channel Matching (ΔRon)	500mOhm	500mOhm
Supply Voltage - Single (V+)	4.5V ~ 36V	4.5V ~ 36V
Supply Voltage - Dual (V±)	±4.5V ~ 18V	±4.5V ~ 18V
Charge Injection	1pC	1pC
Channel Capacitance (CS(off), CD(off))	13pF	13pF
Current - Leakage (IS(off)) (Max)	500pA	500pA
Operating Temperature	-40°C ~ 85°C (TA)	-40°C ~ 85°C (TA)
Package / Case	8-SOIC (0.154", 3.90mm Width)	8-SOIC (0.154", 3.90mm Width)
Mounting Type	Surface Mount	Surface Mount
RoHS Status	ROHS3 Compliant	ROHS3 Compliant
Moisture Sensitivity Level (MSL)	1 (Unlimited)	1 (Unlimited)
Product Status	Active	Active

Engineering Selection Recommendations

Component selection for MAX4526ESA+ applications must prioritize Active product status to ensure long-term supply availability and manufacturer support. Both the main part and identified substitutes maintain Active classification with full RoHS3 compliance, satisfying regulatory requirements for industrial and commercial applications. MSL 1 rating permits unlimited shelf life without moisture bake-out procedures, reducing handling complexity in manufacturing environments.

Selection between equivalent parts should be based on supplier availability, lead time, and pricing within your procurement network. All listed substitutes maintain identical electrical performance, thermal operating range, and package specifications, ensuring direct functional interchangeability without circuit redesign or PCB layout modification.

Frequently Asked Questions (FAQ)

Q: Can MAX4526ESA+ be replaced with other Maxim Integrated analog switch products?

A: Only components matching all specified parameters qualify as substitutes. The MAX4526ESA+ configuration (SPDT, 2:1, 175Ohm, 8-SOIC) is specific to this product line. Alternative Maxim switch ICs with different circuit topologies, resistance values, or package types are not interchangeable.

Q: What does the 8-SOIC package specification mean for PCB design?

A: The 8-SOIC (Small Outline Integrated Circuit) package measures 0.154 inches (3.90mm) in width. This standard surface mount form factor is compatible with automated assembly equipment and standard PCB footprints. All substitute parts use identical package dimensions, ensuring direct PCB compatibility.

Q: Is the MAX4526ESA+ suitable for high-temperature applications?

A: The operating temperature range is -40°C to 85°C ambient. Applications requiring operation beyond 85°C require alternative components with extended temperature specifications. Verify your application's thermal requirements against this specified range.

Q: What is the significance of 500mOhm channel-to-channel matching?

A: Channel-to-channel matching (ΔRon) of 500mOhm specifies the maximum resistance variation between the two independent SPDT circuits. This parameter is critical for applications requiring balanced signal paths or precision multiplexing. All substitutes maintain identical matching specifications.

Q: Does RoHS3 compliance affect component selection?

A: RoHS3 compliance is mandatory for applications in regulated markets. Both the main part and substitutes meet this requirement, ensuring regulatory compliance without additional qualification. Verify your end-market requirements to confirm RoHS3 applicability.

Q: What is MSL 1 and why does it matter?

A: Moisture Sensitivity Level (MSL) 1 indicates unlimited shelf life without moisture exposure restrictions. This eliminates the need for moisture bake-out procedures before soldering, reducing manufacturing complexity and cost compared to higher MSL ratings.

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