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 component integrates two independent 2:1 multiplexer/demultiplexer circuits with 175Ω on-state resistance in an 8-SOIC surface mount package. The MAX4526ESA is classified as obsolete, making identification of active equivalent parts essential for new designs and production continuity. The substitute MAX4526ESA+ provides functional equivalence with current product status and improved compliance characteristics.

Key Parameters

Parameter	Value
Switch Circuit Configuration	SPDT (Single Pole Double Throw)
Multiplexer/Demultiplexer Circuit	2:1
Number of Circuits	2
On-State Resistance (Max)	175Ω
Channel-to-Channel Matching (ΔRon)	500mΩ
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)
Mounting Type	Surface Mount
Package / Case	8-SOIC (0.154", 3.90mm Width)

Substitute Part Grouping Explanation

Substitution of the MAX4526ESA with the MAX4526ESA+ is based on strict electrical and mechanical parameter equivalence. Both parts maintain identical specifications across all critical switching parameters: SPDT circuit configuration, 2:1 multiplexer/demultiplexer topology, dual-circuit integration, 175Ω on-state resistance, 500mΩ channel matching, supply voltage ranges (4.5V–36V single, ±4.5V–18V dual), 1pC charge injection, 13pF channel capacitance, and 500pA maximum leakage current. Both components operate across the same temperature range (-40°C to 85°C) and utilize identical 8-SOIC surface mount packaging. The primary distinction is product status: MAX4526ESA is obsolete, while MAX4526ESA+ is active. Additionally, MAX4526ESA+ achieves RoHS3 compliance, whereas the original MAX4526ESA is RoHS non-compliant. These differences do not affect electrical or mechanical compatibility.

Parameter Comparison

Parameter	MAX4526ESA (Main Part)	MAX4526ESA+ (Substitute)
Manufacturer	Analog Devices Inc./Maxim Integrated	Analog Devices Inc./Maxim Integrated
Product Status	Obsolete	Active
Switch Circuit	SPDT	SPDT
Multiplexer/Demultiplexer Circuit	2:1	2:1
Number of Circuits	2	2
On-State Resistance (Max)	175Ω	175Ω
Channel-to-Channel Matching (ΔRon)	500mΩ	500mΩ
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 Range	-40°C ~ 85°C (TA)	-40°C ~ 85°C (TA)
Mounting Type	Surface Mount	Surface Mount
Package / Case	8-SOIC (0.154", 3.90mm Width)	8-SOIC (0.154", 3.90mm Width)
RoHS Status	RoHS non-compliant	RoHS3 Compliant
Moisture Sensitivity Level (MSL)	1 (Unlimited)	1 (Unlimited)
REACH Status	REACH Unaffected	REACH Unaffected
ECCN	EAR99	EAR99
HTSUS Code	8542.39.0001	8542.39.0001

Engineering Selection Recommendations

The MAX4526ESA+ is the direct active substitute for the obsolete MAX4526ESA. Both parts are electrically and mechanically identical across all specified parameters, ensuring drop-in compatibility in existing circuit designs. The MAX4526ESA+ offers the additional advantage of RoHS3 compliance, making it suitable for applications subject to environmental and regulatory restrictions. For new designs and production continuity, the MAX4526ESA+ is the appropriate selection. The identical 8-SOIC package, supply voltage ranges, switching characteristics, and thermal operating window ensure seamless integration without circuit modification or re-qualification.

Frequently Asked Questions (FAQ)

Q: Can MAX4526ESA+ directly replace MAX4526ESA in existing designs? A: Yes. Both parts are electrically and mechanically equivalent. The MAX4526ESA+ maintains identical on-state resistance (175Ω), channel matching (500mΩ), supply voltage ranges (4.5V–36V single, ±4.5V–18V dual), charge injection (1pC), channel capacitance (13pF), leakage current (500pA), and operating temperature range (-40°C to 85°C). The 8-SOIC package dimensions are identical, enabling direct PCB compatibility.

Q: What is the primary difference between MAX4526ESA and MAX4526ESA+? A: The MAX4526ESA is obsolete, while MAX4526ESA+ is an active product. Additionally, MAX4526ESA+ achieves RoHS3 compliance, whereas MAX4526ESA is RoHS non-compliant. These differences do not affect electrical performance or mechanical fit.

Q: Are there packaging differences between these parts? A: Both parts use 8-SOIC surface mount packaging with identical dimensions (0.154" width, 3.90mm). The MAX4526ESA is supplied in standard packaging, while MAX4526ESA+ is supplied in Tube packaging. This distinction does not affect component functionality or PCB assembly compatibility.

Q: What supply voltage configurations does the MAX4526ESA+ support? A: The MAX4526ESA+ supports both single-supply operation (4.5V to 36V) and dual-supply operation (±4.5V to ±18V), providing flexibility for various circuit topologies.

Q: Is the MAX4526ESA+ suitable for applications requiring RoHS compliance? A: Yes. The MAX4526ESA+ is RoHS3 compliant, making it appropriate for applications subject to RoHS directives and environmental regulations. The original MAX4526ESA is RoHS non-compliant.

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