MAX4633ESE+ Equivalent & Substitute Parts

Part Overview

The MAX4633ESE+ is a 2-circuit IC switch with DPST-NO configuration, 85Ohm on-state resistance, and 16-SOIC surface mount packaging manufactured by Analog Devices Inc./Maxim Integrated. This component is classified as obsolete, necessitating identification of active substitute parts that maintain functional compatibility within specified electrical and mechanical parameters. The part operates across single supply (9V–36V) or dual supply (±4.5V–18V) configurations with 150ns/100ns switching times and is RoHS3 compliant.

Key Parameters

Parameter	MAX4633ESE+
Manufacturer	Analog Devices Inc./Maxim Integrated
Switch Circuit Type	DPST - NO
Multiplexer/Demultiplexer Circuit	2:1
Number of Circuits	2
On-State Resistance (Max)	85Ohm
Channel-to-Channel Matching (ΔRon)	3Ohm
Voltage - Supply, Single (V+)	9V ~ 36V
Voltage - Supply, Dual (V±)	±4.5V ~ 18V
Switch Time (Ton, Toff) (Max)	150ns, 100ns
Charge Injection	5pC
Channel Capacitance (CS(off), CD(off))	18pF, 18pF
Current - Leakage (IS(off)) (Max)	500pA
Crosstalk	-66dB @ 1MHz
Operating Temperature	-40°C ~ 85°C (TA)
Package / Case	16-SOIC (0.154", 3.90mm Width)
Mounting Type	Surface Mount
RoHS Status	ROHS3 Compliant
Moisture Sensitivity Level (MSL)	1 (Unlimited)
Product Status	Obsolete

Substitute Part Grouping Explanation

Substitution of the MAX4633ESE+ is based on compatibility across the following critical parameters:

Mechanical Compatibility:

Identical package type: 16-SOIC (0.154", 3.90mm Width)
Surface mount mounting type
MSL rating of 1 (Unlimited)

Electrical Compatibility Criteria:

Operating temperature range: -40°C ~ 85°C (TA)
Switch time specifications: 150ns (Ton), 100ns (Toff)
Leakage current: 500pA maximum
Supply voltage overlap within specified ranges
RoHS3 compliance

Functional Differences: The substitute parts (DG405BDY-E3 and DG405BDY-T1-E3) differ in circuit configuration (SPST-NO vs. DPST-NO) and number of circuits (4 vs. 2), with lower on-state resistance (45Ohm vs. 85Ohm). These parts are functionally distinct but share identical package, thermal, and compliance specifications, allowing substitution in applications where the reduced resistance and increased circuit count are acceptable.

Parameter Comparison

Parameter	MAX4633ESE+	DG405BDY-E3	DG405BDY-T1-E3
Manufacturer	Analog Devices Inc./Maxim Integrated	Vishay Siliconix	Vishay Siliconix
Switch Circuit Type	DPST - NO	SPST - NO	SPST - NO
Number of Circuits	2	4	4
On-State Resistance (Max)	85Ohm	45Ohm	45Ohm
Voltage - Supply, Single (V+)	9V ~ 36V	13V ~ 36V	13V ~ 36V
Voltage - Supply, Dual (V±)	±4.5V ~ 18V	±7V ~ 22V	±7V ~ 22V
Switch Time (Ton, Toff) (Max)	150ns, 100ns	150ns, 100ns	150ns, 100ns
Charge Injection	5pC	60pC	60pC
Channel Capacitance (CS(off), CD(off))	18pF, 18pF	12pF, 12pF	12pF, 12pF
Current - Leakage (IS(off)) (Max)	500pA	500pA	500pA
Crosstalk	-66dB @ 1MHz	-94.8dB @ 1MHz	-94.8dB @ 1MHz
Operating Temperature	-40°C ~ 85°C (TA)	-40°C ~ 85°C (TA)	-40°C ~ 85°C (TA)
Package / Case	16-SOIC (0.154", 3.90mm Width)	16-SOIC (0.154", 3.90mm Width)	16-SOIC (0.154", 3.90mm Width)
Mounting Type	Surface Mount	Surface Mount	Surface Mount
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant
Moisture Sensitivity Level (MSL)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)
Product Status	Obsolete	Active	Active
Packaging	-	Tube	Tape & Reel (TR)

Engineering Selection Recommendations

DG405BDY-E3 (Tube Packaging) and DG405BDY-T1-E3 (Tape & Reel Packaging) are active substitute parts for the obsolete MAX4633ESE+. Both parts maintain identical package geometry, thermal operating range, and RoHS3 compliance. The selection between these two substitute parts depends on procurement and assembly requirements: tube packaging for lower-volume applications and tape & reel for automated assembly processes.

The DG405 series provides improved electrical performance in crosstalk specification (-94.8dB vs. -66dB @ 1MHz) and reduced channel capacitance (12pF vs. 18pF). The minimum supply voltage for single supply operation increases from 9V to 13V, and dual supply minimum increases from ±4.5V to ±7V. Charge injection increases from 5pC to 60pC. On-state resistance is reduced to 45Ohm with four circuits available instead of two.

Frequently Asked Questions (FAQ)

Q: Can DG405BDY-E3 and DG405BDY-T1-E3 be used interchangeably?

A: Yes. Both parts are electrically and mechanically identical. The difference is packaging format: DG405BDY-E3 is supplied in tubes for manual handling, while DG405BDY-T1-E3 is supplied in tape & reel format for automated pick-and-place assembly. Selection depends on assembly process requirements.

Q: What is the primary functional difference between MAX4633ESE+ and DG405 substitutes?

A: The MAX4633ESE+ is a 2-circuit DPST-NO switch, while DG405 parts are 4-circuit SPST-NO switches. DPST (Double Pole Single Throw) controls two independent circuits simultaneously, whereas SPST (Single Pole Single Throw) controls individual circuits. The DG405 provides four independent 1:1 multiplexer circuits instead of two 2:1 multiplexer circuits.

Q: Are there supply voltage compatibility concerns?

A: Yes. The MAX4633ESE+ operates from 9V minimum single supply; DG405 substitutes require 13V minimum. Dual supply operation shifts from ±4.5V to ±7V minimum. Verify your application supply voltage meets DG405 minimum specifications before substitution.

Q: How do on-state resistance differences affect circuit performance?

A: DG405 substitutes provide 45Ohm on-state resistance compared to MAX4633ESE+ 85Ohm. Lower resistance reduces signal attenuation and power dissipation in switching applications. This is generally beneficial but may require circuit re-evaluation if the original design relied on the higher impedance characteristic.

Q: What packaging considerations apply to PCB assembly?

A: Both substitute parts use identical 16-SOIC (0.154", 3.90mm Width) surface mount packages. PCB footprints are directly compatible. Packaging format (tube vs. tape & reel) affects only the supply method and assembly automation compatibility, not the component itself or PCB layout.

Q: Are there compliance or certification differences?

A: All three parts (MAX4633ESE+, DG405BDY-E3, DG405BDY-T1-E3) are RoHS3 compliant with MSL rating of 1 (Unlimited). ECCN and HTSUS classifications are identical. No compliance barriers exist for substitution.

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