MAX4561EUT+ Equivalent & Substitute Parts

Part Overview

The MAX4561EUT+ is a single-circuit SPDT (Single Pole Double Throw) analog switch manufactured by Analog Devices Inc./Maxim Integrated. This interface component operates as a 2:1 multiplexer/demultiplexer with a maximum on-state resistance of 70Ohm and is housed in a SOT-23-6 surface mount package. The device is classified as Active product status and is ROHS3 compliant with unlimited moisture sensitivity rating (MSL 1). Alternative equivalent parts are identified to support procurement flexibility, inventory management, and supply chain continuity for applications requiring SPDT switching functionality within the specified electrical and mechanical parameters.

Key Parameters

Parameter	Specification
Switch Circuit Configuration	SPDT (Single Pole Double Throw)
Multiplexer/Demultiplexer Circuit	2:1
Number of Circuits	1
On-State Resistance (Max)	70Ohm
Channel-to-Channel Matching (ΔRon)	500mOhm
Supply Voltage Range (Single)	1.8V ~ 12V
Switch Time - Turn On (Ton)	150ns (Max)
Switch Time - Turn Off (Toff)	80ns (Max)
Charge Injection	17pC
Channel Capacitance (CS(off), CD(off))	20pF
Leakage Current (IS(off)) (Max)	500pA
Operating Temperature Range	-40°C ~ 85°C (TA)
Package / Case	SOT-23-6
Mounting Type	Surface Mount
RoHS Status	ROHS3 Compliant
Moisture Sensitivity Level (MSL)	1 (Unlimited)

Substitute Part Grouping Explanation

Substitution eligibility for the MAX4561EUT+ is determined by strict equivalence across the following critical parameters:

Electrical Equivalence Criteria:

Switch circuit configuration: SPDT
Multiplexer/demultiplexer circuit: 2:1
Number of circuits: 1
On-state resistance: 70Ohm maximum
Channel-to-Channel matching: 500mOhm
Supply voltage range: 1.8V ~ 12V (single supply)
Switch timing: Ton 150ns (Max), Toff 80ns (Max)
Charge injection: 17pC
Channel capacitance: 20pF
Leakage current: 500pA maximum
Operating temperature: -40°C ~ 85°C

Mechanical Equivalence Criteria:

Package type: SOT-23-6
Mounting type: Surface Mount
Supplier device package: SOT-6

Compliance Equivalence Criteria:

RoHS3 compliance
MSL rating: 1 (Unlimited)
REACH unaffected status
Active product status

Substitute parts must match all electrical parameters, mechanical specifications, and compliance certifications. Packaging format variations (such as Cut Tape versus alternative tape formats) do not affect functional equivalence when the base product number and electrical specifications remain identical.

Parameter Comparison

Parameter	MAX4561EUT+	MAX4561EUT+T
Manufacturer	Analog Devices Inc./Maxim Integrated	Analog Devices Inc./Maxim Integrated
Category	Interface	Interface
Switch Circuit	SPDT	SPDT
Multiplexer/Demultiplexer Circuit	2:1	2:1
Number of Circuits	1	1
On-State Resistance (Max)	70Ohm	70Ohm
Channel-to-Channel Matching (ΔRon)	500mOhm	500mOhm
Voltage - Supply, Single (V+)	1.8V ~ 12V	1.8V ~ 12V
Switch Time - Ton (Max)	150ns	150ns
Switch Time - Toff (Max)	80ns	80ns
Charge Injection	17pC	17pC
Channel Capacitance (CS(off), CD(off))	20pF	20pF
Current - Leakage (IS(off)) (Max)	500pA	500pA
Operating Temperature	-40°C ~ 85°C (TA)	-40°C ~ 85°C (TA)
Mounting Type	Surface Mount	Surface Mount
Package / Case	SOT-23-6	SOT-23-6
Supplier Device Package	SOT-6	SOT-6
Base Product Number	MAX4561	MAX4561
Product Status	Active	Active
RoHS Status	ROHS3 Compliant	ROHS3 Compliant
Moisture Sensitivity Level (MSL)	1 (Unlimited)	1 (Unlimited)
REACH Status	REACH Unaffected	REACH Unaffected

Engineering Selection Recommendations

Both MAX4561EUT+ and MAX4561EUT+T are functionally equivalent SPDT analog switch components from Analog Devices Inc./Maxim Integrated. Selection between these parts is based on procurement and supply chain factors rather than electrical or mechanical differences.

MAX4561EUT+ is suitable for applications where standard packaging is required. This variant maintains Active product status with full ROHS3 compliance and unlimited MSL rating.

MAX4561EUT+T is the equivalent part supplied in Cut Tape (CT) and Digi-Reel® packaging format. This variant is identical in electrical performance and compliance certifications. The packaging difference accommodates different assembly and procurement workflows. Current inventory availability for MAX4561EUT+T is higher (20,200 pieces) compared to MAX4561EUT+ (5,497 pieces), which may influence supply chain decisions.

Both parts are ROHS3 compliant, REACH unaffected, and carry MSL 1 (Unlimited) rating, confirming suitability for standard manufacturing and storage conditions. Active product status for both variants ensures continued manufacturer support and availability.

Frequently Asked Questions (FAQ)

Q: Are MAX4561EUT+ and MAX4561EUT+T electrically interchangeable?

A: Yes. Both parts are electrically identical with matching SPDT switch configuration, 70Ohm on-state resistance, 1.8V ~ 12V supply range, 150ns/80ns switching times, and all other electrical parameters. The difference is packaging format only.

Q: What is the difference between MAX4561EUT+ and MAX4561EUT+T?

A: The primary difference is packaging format. MAX4561EUT+ uses standard packaging, while MAX4561EUT+T is supplied in Cut Tape (CT) and Digi-Reel® format. Both are housed in SOT-23-6 packages and are mechanically compatible with identical PCB footprints.

Q: Can I substitute MAX4561EUT+T for MAX4561EUT+ in my design?

A: Yes. Both parts share identical electrical specifications, operating temperature range (-40°C ~ 85°C), and compliance certifications (ROHS3, REACH unaffected, MSL 1). Substitution is valid for all applications requiring SPDT switching with 70Ohm on-state resistance and 1.8V ~ 12V supply operation.

Q: Are there any compliance or regulatory differences between these parts?

A: No. Both MAX4561EUT+ and MAX4561EUT+T carry identical compliance certifications: ROHS3 compliant, REACH unaffected, MSL 1 (Unlimited), and ECCN EAR99 classification.

Q: What is the significance of the "+T" suffix in MAX4561EUT+T?

A: The "+T" suffix indicates the packaging format (Cut Tape and Digi-Reel®). This designation does not affect electrical performance or functional compatibility. The base product number MAX4561 and electrical specifications remain unchanged.

Q: Which part should I select for new designs?

A: Either part is suitable for new designs. Selection should be based on procurement requirements, assembly equipment compatibility with tape formats, and current inventory availability. Both parts are Active status with full manufacturer support.

Q: Is the SOT-23-6 package the same for both parts?

A: Yes. Both MAX4561EUT+ and MAX4561EUT+T use identical SOT-23-6 surface mount packages with SOT-6 supplier device package designation. PCB footprints and land patterns are identical.

Q: What is the operating temperature range for these parts?

A: Both parts operate across -40°C to 85°C (TA). This range is suitable for industrial and commercial applications.

Q: Are these parts suitable for high-speed switching applications?

A: Yes. Both parts support switching times of 150ns maximum turn-on and 80ns maximum turn-off, with 17pC charge injection and 20pF channel capacitance, making them suitable for applications requiring fast analog switching.

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