MAX4533EWP Equivalent & Substitute Parts

Part Overview

The MAX4533EWP is a 4-circuit SPDT (Single Pole Double Throw) analog switch IC manufactured by Analog Devices Inc./Maxim Integrated, housed in a 20-SOIC surface mount package. This component functions as a 2:1 multiplexer/demultiplexer with 175Ohm on-state resistance, designed for signal routing and switching applications across industrial and commercial temperature ranges (-40°C to 85°C).

The MAX4533EWP is classified as obsolete. Identifying equivalent and substitute parts is necessary to ensure design continuity, maintain supply chain reliability, and support ongoing production or maintenance of systems utilizing this component.

Key Parameters

Parameter	Value
Switch Circuit Configuration	SPDT (Single Pole Double Throw)
Multiplexer/Demultiplexer Circuit	2:1
Number of Circuits	4
On-State Resistance (Max)	175Ohm
Channel-to-Channel Matching (ΔRon)	1Ohm
Voltage - Supply, Single (V+)	9V ~ 36V
Voltage - Supply, Dual (V±)	±4.5V ~ 18V
Switch Time (Ton, Toff) (Max)	250ns, 150ns
Charge Injection	1.5pC
Channel Capacitance (CS(off), CD(off))	5pF
Current - Leakage (IS(off)) (Max)	20nA
Crosstalk	-66dB @ 1MHz
Operating Temperature	-40°C ~ 85°C (TA)
Package / Case	20-SOIC (0.295", 7.50mm Width)
Mounting Type	Surface Mount
RoHS Status	RoHS non-compliant
Moisture Sensitivity Level (MSL)	1 (Unlimited)

Substitute Part Grouping Explanation

Substitution eligibility for the MAX4533EWP is determined by the following critical parameters:

Functional Equivalence Requirements:

Switch circuit configuration: SPDT
Multiplexer/demultiplexer circuit: 2:1
Number of circuits: 4
Package / Case: 20-SOIC (0.295", 7.50mm Width)
Mounting type: Surface Mount
Operating temperature range: -40°C ~ 85°C (TA)

Performance Compatibility Criteria:

On-state resistance must not exceed 175Ohm (lower values are acceptable and provide improved performance)
Supply voltage ranges must encompass or match the original specification
Switch timing, charge injection, and crosstalk characteristics must be suitable for the application

Substitute Parts Identified:

MAX4533EWP+ — Direct equivalent with identical electrical specifications. Differs only in packaging format (Tube vs. standard) and product status (Active vs. Obsolete). RoHS3 compliant.
ADG333ABRZ and ADG333ABRZ-REEL — Manufacturer-recommended alternatives with improved electrical performance. Both feature lower on-state resistance (45Ohm vs. 175Ohm), faster switching times, lower leakage current, and superior crosstalk performance. Packaging differs (Tube and Cut Tape/Digi-Reel respectively). Both are RoHS3 compliant and Active status.

Parameter Comparison

Parameter	MAX4533EWP (Original)	MAX4533EWP+ (Direct Equivalent)	ADG333ABRZ (Recommended Alternative)	ADG333ABRZ-REEL (Recommended Alternative)
Switch Circuit	SPDT	SPDT	SPDT	SPDT
Multiplexer/Demultiplexer Circuit	2:1	2:1	2:1	2:1
Number of Circuits	4	4	4	4
On-State Resistance (Max)	175Ohm	175Ohm	45Ohm	45Ohm
Channel-to-Channel Matching (ΔRon)	1Ohm	1Ohm	5Ohm	5Ohm
Voltage - Supply, Single (V+)	9V ~ 36V	9V ~ 36V	3V ~ 30V	3V ~ 30V
Voltage - Supply, Dual (V±)	±4.5V ~ 18V	±4.5V ~ 18V	±3V ~ 20V	±3V ~ 20V
Switch Time Ton (Max)	250ns	250ns	90ns (Typ)	90ns (Typ)
Switch Time Toff (Max)	150ns	150ns	80ns (Typ)	80ns (Typ)
Charge Injection	1.5pC	1.5pC	2pC	2pC
Channel Capacitance (CS(off), CD(off))	5pF	5pF	7pF	7pF
Current - Leakage (IS(off)) (Max)	20nA	20nA	250pA	250pA
Crosstalk	-66dB @ 1MHz	-66dB @ 1MHz	-85dB @ 1MHz	-85dB @ 1MHz
Operating Temperature	-40°C ~ 85°C	-40°C ~ 85°C	-40°C ~ 85°C	-40°C ~ 85°C
Package / Case	20-SOIC	20-SOIC	20-SOIC	20-SOIC
Mounting Type	Surface Mount	Surface Mount	Surface Mount	Surface Mount
Product Status	Obsolete	Active	Active	Active
RoHS Status	RoHS non-compliant	RoHS3 Compliant	RoHS3 Compliant	RoHS3 Compliant

Engineering Selection Recommendations

For Direct Replacement (Pin-Compatible, Identical Electrical Performance):

Select MAX4533EWP+ when the original MAX4533EWP is no longer available. This part maintains identical electrical specifications and 20-SOIC package compatibility. The primary advantage is Active product status and RoHS3 compliance, ensuring long-term supply chain availability and regulatory alignment with modern manufacturing standards.

For Performance Enhancement (Improved Electrical Characteristics):

Select ADG333ABRZ or ADG333ABRZ-REEL when design requirements allow for improved performance characteristics. These alternatives offer:

Significantly lower on-state resistance (45Ohm vs. 175Ohm), reducing signal attenuation and power dissipation
Faster switching times (90ns/80ns typical vs. 250ns/150ns maximum)
Superior crosstalk isolation (-85dB vs. -66dB @ 1MHz)
Lower leakage current (250pA vs. 20nA)

Both ADG333 variants are Active, RoHS3 compliant, and maintain the same 20-SOIC package footprint and operating temperature range. The ADG333ABRZ-REEL variant is supplied in Cut Tape and Digi-Reel format for high-volume applications, while ADG333ABRZ is supplied in Tube packaging.

Supply Voltage Consideration:

The ADG333 series supports a lower minimum supply voltage (3V single supply, ±3V dual supply) compared to the MAX4533EWP (9V single supply, ±4.5V dual supply). Verify that your application's supply voltage falls within the ADG333 operating range if selecting this alternative.

Frequently Asked Questions (FAQ)

Q: Can MAX4533EWP+ be used as a direct replacement for MAX4533EWP?

A: Yes. MAX4533EWP+ is electrically and functionally identical to MAX4533EWP with the same 20-SOIC package, pin configuration, and electrical specifications. The primary differences are packaging format (Tube) and product status (Active vs. Obsolete). No circuit modifications are required.

Q: What are the key differences between MAX4533EWP and ADG333ABRZ?

A: Both are 4-circuit SPDT 2:1 switches in 20-SOIC packages with identical operating temperature ranges. The ADG333ABRZ offers superior performance: 45Ohm on-state resistance (vs. 175Ohm), faster switching (90ns/80ns typical vs. 250ns/150ns), lower leakage current (250pA vs. 20nA), and better crosstalk (-85dB vs. -66dB @ 1MHz). The ADG333ABRZ supports lower supply voltages (3V minimum vs. 9V minimum for single supply).

Q: Are the ADG333ABRZ and ADG333ABRZ-REEL electrically identical?

A: Yes. Both parts are electrically and functionally identical. The difference is packaging format: ADG333ABRZ is supplied in Tube packaging, while ADG333ABRZ-REEL is supplied in Cut Tape and Digi-Reel format. Select based on your procurement and assembly requirements.

Q: Will ADG333ABRZ work in a circuit designed for MAX4533EWP?

A: The ADG333ABRZ is pin-compatible and functionally compatible with the MAX4533EWP in the same 20-SOIC package. However, verify that your circuit's supply voltage meets the ADG333 minimum requirement (3V single supply or ±3V dual supply). The improved electrical performance of the ADG333ABRZ (lower on-state resistance, faster switching, lower leakage) will enhance circuit performance without requiring design changes.

Q: What is the significance of RoHS3 compliance for these parts?

A: RoHS3 compliance indicates that the part meets current Restriction of Hazardous Substances regulations, restricting the use of lead and other hazardous materials. The MAX4533EWP is RoHS non-compliant (older manufacturing standard), while MAX4533EWP+, ADG333ABRZ, and ADG333ABRZ-REEL are all RoHS3 compliant. For new designs or systems subject to regulatory requirements, RoHS3 compliant alternatives are required.

Q: Can I use ADG333ABRZ in a 9V to 36V single supply application?

A: No. The ADG333ABRZ supports single supply operation from 3V to 30V. If your application requires operation above 30V single supply, the MAX4533EWP or MAX4533EWP+ must be used, as they support 9V to 36V single supply operation.

Q: What is the difference between Tube and Cut Tape/Digi-Reel packaging?

A: Tube packaging is used for lower-volume orders and manual assembly. Cut Tape and Digi-Reel packaging is used for high-volume automated assembly. Both formats contain the same component. Select based on your production volume and assembly process requirements.

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