MAX4603EAE Equivalent & Substitute Parts

Part Overview

The MAX4603EAE is a 4-circuit IC switch manufactured by Analog Devices Inc./Maxim Integrated, configured as SPST (Single Pole Single Throw) NO/NC switches with 1:1 multiplexer/demultiplexer functionality. This component operates across a wide supply voltage range (4.5V to 36V single supply, or ±4.5V to ±20V dual supply) and features low on-state resistance of 2.5Ohm maximum with fast switching times (250ns/350ns). The MAX4603EAE is classified as obsolete, making identification of active equivalent parts essential for new designs and ongoing production support.

Key Parameters

Parameter	Value
Switch Circuit Configuration	SPST - NO/NC
Number of Circuits	4
Multiplexer/Demultiplexer Ratio	1:1
On-State Resistance (Max)	2.5Ohm
Channel-to-Channel Matching (ΔRon)	100mOhm
Supply Voltage - Single (V+)	4.5V ~ 36V
Supply Voltage - Dual (V±)	±4.5V ~ 20V
Switch Time (Ton/Toff) Max	250ns / 350ns
Charge Injection	120pC
Channel Capacitance (CS(off)/CD(off))	55pF / 55pF
Leakage Current (IS(off)) Max	500pA
Crosstalk	-59dB @ 1MHz
Operating Temperature Range	-40°C ~ 85°C
Package Type	16-SSOP (0.209", 5.30mm Width)
Mounting Type	Surface Mount

Substitute Part Grouping Explanation

Substitution eligibility for the MAX4603EAE is determined by strict equivalence across the following critical parameters:

Switch circuit configuration (SPST - NO/NC)
Number of circuits (4)
Multiplexer/demultiplexer ratio (1:1)
On-state resistance maximum (2.5Ohm)
Channel-to-channel matching (100mOhm)
Supply voltage ranges (4.5V ~ 36V single; ±4.5V ~ ±20V dual)
Switching time specifications (250ns/350ns)
Charge injection (120pC)
Channel capacitance values (55pF/55pF)
Leakage current maximum (500pA)
Crosstalk performance (-59dB @ 1MHz)
Operating temperature range (-40°C ~ 85°C)
Package specification (16-SSOP)

The MAX4603EAE+ qualifies as a direct substitute based on identical electrical and mechanical parameters across all specified criteria.

Parameter Comparison

Parameter	MAX4603EAE (Main Part)	MAX4603EAE+ (Substitute)
Manufacturer	Analog Devices Inc./Maxim Integrated	Analog Devices Inc./Maxim Integrated
Product Status	Obsolete	Active
Switch Circuit	SPST - NO/NC	SPST - NO/NC
Number of Circuits	4	4
Multiplexer/Demultiplexer Ratio	1:1	1:1
On-State Resistance (Max)	2.5Ohm	2.5Ohm
Channel-to-Channel Matching (ΔRon)	100mOhm	100mOhm
Supply Voltage - Single (V+)	4.5V ~ 36V	4.5V ~ 36V
Supply Voltage - Dual (V±)	±4.5V ~ 20V	±4.5V ~ 20V
Switch Time (Ton/Toff) Max	250ns / 350ns	250ns / 350ns
Charge Injection	120pC	120pC
Channel Capacitance (CS(off)/CD(off))	55pF / 55pF	55pF / 55pF
Leakage Current (IS(off)) Max	500pA	500pA
Crosstalk	-59dB @ 1MHz	-59dB @ 1MHz
Operating Temperature	-40°C ~ 85°C	-40°C ~ 85°C
Package / Case	16-SSOP (0.209", 5.30mm Width)	16-SSOP (0.209", 5.30mm Width)
Mounting Type	Surface Mount	Surface Mount
RoHS Status	RoHS non-compliant	ROHS3 Compliant
Packaging Format	Not specified	Tube

Engineering Selection Recommendations

The MAX4603EAE+ is the active equivalent for the obsolete MAX4603EAE. Both parts maintain identical electrical specifications and package form factor, ensuring direct functional compatibility in circuit applications.

The primary distinction between these parts is product status and regulatory compliance. The MAX4603EAE is obsolete and RoHS non-compliant, while the MAX4603EAE+ is an active product with ROHS3 compliance. For new designs and production environments subject to RoHS regulations, the MAX4603EAE+ is the appropriate selection. The MAX4603EAE+ is supplied in tube packaging, whereas the original part's packaging format is not specified.

Both parts share identical electrical performance across all switching, timing, and signal integrity parameters, supporting seamless substitution in existing circuit designs without modification to PCB layout or component footprints.

Frequently Asked Questions (FAQ)

Q: Can the MAX4603EAE+ directly replace the MAX4603EAE in existing designs?

A: Yes. The MAX4603EAE+ provides identical electrical specifications and package dimensions (16-SSOP surface mount). No circuit modifications or PCB layout changes are required for substitution.

Q: What is the primary reason to transition from MAX4603EAE to MAX4603EAE+?

A: The MAX4603EAE is classified as obsolete. The MAX4603EAE+ is the active equivalent part, ensuring ongoing availability and supply chain continuity. Additionally, the MAX4603EAE+ meets ROHS3 compliance requirements, whereas the original part does not.

Q: Are the electrical performance characteristics identical between these parts?

A: Yes. On-state resistance (2.5Ohm), switching times (250ns/350ns), charge injection (120pC), leakage current (500pA), crosstalk (-59dB @ 1MHz), and all other electrical parameters are identical across both parts.

Q: What supply voltage ranges are supported by the MAX4603EAE+?

A: The MAX4603EAE+ operates with single supply voltage from 4.5V to 36V, or dual supply voltage from ±4.5V to ±20V.

Q: Is the 16-SSOP package footprint the same for both parts?

A: Yes. Both the MAX4603EAE and MAX4603EAE+ use the 16-SSOP package with 0.209" width (5.30mm), maintaining identical PCB footprints and mounting requirements.

Q: What is the difference in packaging format between these parts?

A: The MAX4603EAE+ is supplied in tube packaging. The original MAX4603EAE packaging format is not specified in the component data.

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