MAX4642EUA+ Equivalent & Substitute Parts

Part Overview

The MAX4642EUA+ is a 2-circuit SPST-NC (Single Pole Single Throw - Normally Closed) IC switch manufactured by Analog Devices Inc./Maxim Integrated. This interface component operates with a 1:1 multiplexer/demultiplexer configuration and features a maximum on-state resistance of 4Ohm. The device is currently in active product status and is widely used in signal routing and switching applications requiring low on-resistance and fast switching performance. Alternative equivalent parts may be required due to inventory constraints, packaging preferences, or specific application performance requirements.

Key Parameters

Parameter	Value
Switch Circuit Type	SPST - NC
Number of Circuits	2
Multiplexer/Demultiplexer Configuration	1:1
On-State Resistance (Max)	4Ohm
Supply Voltage Range (V+)	1.8V ~ 5.5V
Operating Temperature Range	-40°C ~ 85°C
Package Type	8-TSSOP, 8-MSOP (0.118", 3.00mm Width)
Mounting Type	Surface Mount
RoHS Status	ROHS3 Compliant

Substitute Part Grouping Explanation

Substitution eligibility for the MAX4642EUA+ is determined by the following critical parameters:

Primary Substitution Criteria:

Switch circuit type: SPST - NC
Number of circuits: 2
Multiplexer configuration: 1:1
On-state resistance: 4Ohm maximum
Supply voltage range: 1.8V ~ 5.5V
Package/case: 8-TSSOP, 8-MSOP (0.118", 3.00mm Width)
Mounting type: Surface Mount
RoHS compliance: ROHS3 Compliant

Substitute Parts Identified:

Group 1 - Direct Equivalents (Identical Specifications):

MAX4642EUA+ (original part, Tube packaging)

Group 2 - Functional Equivalents (ADG722 Series - 4Ohm On-Resistance):

ADG722BRMZ (Tube packaging)
ADG722BRMZ-REEL (standard reel packaging)
ADG722BRMZ-REEL7 (Cut Tape & Digi-Reel packaging)

Group 3 - Alternative Performance Class (ADG822 Series - 600mOhm On-Resistance):

ADG822BRMZ (Tube packaging)
ADG822BRMZ-REEL7 (Tape & Reel packaging)

The ADG722 series maintains identical on-state resistance (4Ohm) and supply voltage specifications as the MAX4642EUA+, making them direct functional substitutes with packaging variations. The ADG822 series represents a lower-performance alternative with higher on-state resistance (600mOhm) and should only be selected when the application can tolerate increased resistance and reduced bandwidth performance.

Parameter Comparison

Parameter	MAX4642EUA+	ADG722BRMZ	ADG722BRMZ-REEL	ADG722BRMZ-REEL7	ADG822BRMZ	ADG822BRMZ-REEL7
Manufacturer	Analog Devices/Maxim	Analog Devices	Analog Devices	Analog Devices	Analog Devices	Analog Devices
Switch Circuit	SPST - NC	SPST - NC	SPST - NC	SPST - NC	SPST - NC	SPST - NC
Number of Circuits	2	2	2	2	2	2
Multiplexer Configuration	1:1	1:1	1:1	1:1	1:1	1:1
On-State Resistance (Max)	4Ohm	4Ohm	4Ohm	4Ohm	600mOhm	600mOhm
Channel-to-Channel Matching (ΔRon)	200mOhm	300mOhm	300mOhm	300mOhm	160mOhm	160mOhm
Supply Voltage (V+)	1.8V ~ 5.5V	1.8V ~ 5.5V	1.8V ~ 5.5V	1.8V ~ 5.5V	1.8V ~ 5.5V	1.8V ~ 5.5V
Switch Time Ton (Max)	15ns	14ns	14ns	14ns	45ns	45ns
Switch Time Toff (Max)	8ns	6ns (Typ)	6ns (Typ)	6ns (Typ)	16ns	16ns
-3dB Bandwidth	-	200MHz	200MHz	200MHz	24MHz	24MHz
Charge Injection	2pC	2pC	2pC	2pC	15pC	15pC
Channel Capacitance (CS(off), CD(off))	7pF, 7pF	7pF, 7pF	7pF, 7pF	7pF, 7pF	85pF, 98pF	85pF, 98pF
Current - Leakage (IS(off)) (Max)	250pA	250pA	250pA	250pA	250pA	250pA
Crosstalk @ 1MHz	-97dB	-97dB	-97dB	-97dB	-82dB	-82dB
Operating Temperature	-40°C ~ 85°C	-40°C ~ 85°C	-40°C ~ 85°C	-40°C ~ 85°C	-40°C ~ 125°C	-40°C ~ 125°C
Package / Case	8-TSSOP, 8-MSOP	8-TSSOP, 8-MSOP	8-TSSOP, 8-MSOP	8-TSSOP, 8-MSOP	8-TSSOP, 8-MSOP	8-TSSOP, 8-MSOP
Mounting Type	Surface Mount	Surface Mount	Surface Mount	Surface Mount	Surface Mount	Surface Mount
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant
MSL Rating	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)
REACH Status	REACH Unaffected	REACH Unaffected	REACH Unaffected	REACH Unaffected	REACH Unaffected	REACH Unaffected

Engineering Selection Recommendations

For Direct Substitution (ADG722 Series):

The ADG722BRMZ, ADG722BRMZ-REEL, and ADG722BRMZ-REEL7 are functionally equivalent to the MAX4642EUA+ with identical on-state resistance (4Ohm), supply voltage range (1.8V ~ 5.5V), and package specifications. All variants maintain ROHS3 compliance and MSL 1 rating. Selection among these three should be based on packaging and reel format requirements:

ADG722BRMZ: Tube packaging for lower-volume applications
ADG722BRMZ-REEL: Standard reel format for production environments
ADG722BRMZ-REEL7: Cut Tape & Digi-Reel format for mixed-volume procurement

For Performance-Constrained Applications (ADG822 Series):

The ADG822BRMZ and ADG822BRMZ-REEL7 are suitable only when application requirements can accommodate higher on-state resistance (600mOhm vs. 4Ohm), reduced bandwidth (24MHz vs. 200MHz), and increased charge injection (15pC vs. 2pC). These parts offer extended operating temperature range (-40°C ~ 125°C vs. -40°C ~ 85°C) and improved channel-to-channel matching (160mOhm vs. 200-300mOhm). Both maintain ROHS3 compliance and identical supply voltage specifications.

All substitute parts are manufactured by Analog Devices Inc., ensuring consistent quality and documentation standards.

Frequently Asked Questions (FAQ)

Q: Can ADG722BRMZ be used as a direct replacement for MAX4642EUA+?

A: Yes. The ADG722BRMZ maintains identical on-state resistance (4Ohm), supply voltage range (1.8V ~ 5.5V), circuit configuration (2-circuit SPST-NC 1:1), and package specifications (8-TSSOP, 8-MSOP). The primary difference is packaging format (Tube vs. reel variants). Both are ROHS3 compliant with MSL 1 rating.

Q: What is the difference between ADG722BRMZ, ADG722BRMZ-REEL, and ADG722BRMZ-REEL7?

A: These three parts are electrically identical. The differences are packaging and delivery format: ADG722BRMZ uses Tube packaging, ADG722BRMZ-REEL uses standard reel format, and ADG722BRMZ-REEL7 uses Cut Tape & Digi-Reel format. Selection depends on procurement volume and assembly line requirements.

Q: When should ADG822BRMZ be considered instead of MAX4642EUA+?

A: The ADG822BRMZ should only be selected when the application can tolerate significantly higher on-state resistance (600mOhm vs. 4Ohm), reduced bandwidth (24MHz vs. 200MHz), and slower switching performance. The ADG822 series is not a direct substitute but an alternative for lower-speed, higher-impedance applications. It does offer extended temperature range (-40°C ~ 125°C).

Q: Are all substitute parts RoHS compliant?

A: Yes. All listed substitute parts (MAX4642EUA+, ADG722 series, and ADG822 series) are ROHS3 compliant with MSL 1 (Unlimited) moisture sensitivity rating.

Q: What is the impact of channel-to-channel matching differences?

A: The MAX4642EUA+ specifies 200mOhm channel-to-channel matching (ΔRon), while ADG722 variants specify 300mOhm. For applications requiring tighter matching between the two circuits, the MAX4642EUA+ provides superior performance. The ADG822 series offers improved matching at 160mOhm but with significantly higher absolute on-state resistance.

Q: Can these parts be used interchangeably in existing PCB designs?

A: Yes, provided the PCB footprint accommodates the 8-TSSOP or 8-MSOP package (0.118", 3.00mm Width). All listed parts use identical package specifications and pin configurations. Verify supply voltage requirements and switching speed specifications for your specific application before substitution.

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