MAX4551ESE Equivalent & Substitute Parts

Part Overview

The MAX4551ESE is a 4-circuit SPST-NC (Single Pole Single Throw - Normally Closed) analog switch IC manufactured by Analog Devices Inc./Maxim Integrated. This device operates as a 1:1 multiplexer/demultiplexer with 120Ohm on-state resistance and is housed in a 16-SOIC surface mount package. The MAX4551ESE is classified as obsolete, making identification of functionally equivalent alternatives essential for new designs and production continuity.

Key Parameters

Parameter	Value
Switch Circuit Configuration	SPST - NC
Number of Circuits	4
Multiplexer/Demultiplexer Ratio	1:1
On-State Resistance (Max)	120Ohm
Channel-to-Channel Matching (ΔRon)	1Ohm
Voltage - Supply, Single (V+)	2V ~ 12V
Voltage - Supply, Dual (V±)	±2V ~ 6V
Switch Time (Ton, Toff) (Max)	110ns, 90ns
Charge Injection	2pC
Channel Capacitance (CS(off), CD(off))	4.6pF, 3pF
Current - Leakage (IS(off)) (Max)	1nA
Crosstalk	-90dB @ 100kHz
Operating Temperature	-40°C ~ 85°C (TA)
Package / Case	16-SOIC (0.154", 3.90mm Width)
Mounting Type	Surface Mount
RoHS Status	RoHS non-compliant
Moisture Sensitivity Level (MSL)	1 (Unlimited)

Substitute Part Grouping Explanation

Substitution eligibility for the MAX4551ESE is determined by strict adherence to the following core parameters:

Critical Matching Parameters:

Switch circuit configuration: SPST - NC
Number of circuits: 4
Multiplexer/demultiplexer ratio: 1:1
Package type: 16-SOIC surface mount
Operating temperature range: -40°C ~ 85°C minimum

Allowable Variation Parameters:

On-state resistance: Substitutes may have lower resistance values (improved performance)
Supply voltage ranges: Substitutes may support different voltage specifications if application requirements are met
Switch timing characteristics: Substitutes may have faster switching times
Charge injection and capacitance: Substitutes may have different values
Crosstalk performance: Substitutes may have improved isolation

Three substitute parts meet the core matching criteria:

MAX4551ESE+ - Direct manufacturer upgrade with identical electrical specifications and active product status
DG271BDY-E3 - Vishay Siliconix alternative with improved on-state resistance (50Ohm) and crosstalk performance (-100dB)
DG454EY-T1-E3 - Vishay Siliconix alternative with superior on-state resistance (5.3Ohm) and extended temperature range (-40°C ~ 125°C)

Parameter Comparison

Parameter	MAX4551ESE	MAX4551ESE+	DG271BDY-E3	DG271BDY-T1-E3	DG454EY-T1-E3
Manufacturer	Analog Devices Inc./Maxim Integrated	Analog Devices Inc./Maxim Integrated	Vishay Siliconix	Vishay Siliconix	Vishay Siliconix
Product Status	Obsolete	Active	Active	Active	Active
Switch Circuit	SPST - NC	SPST - NC	SPST - NC	SPST - NC	SPST - NC
Number of Circuits	4	4	4	4	4
Multiplexer/Demultiplexer Ratio	1:1	1:1	1:1	1:1	1:1
On-State Resistance (Max)	120Ohm	120Ohm	50Ohm	50Ohm	5.3Ohm
Voltage - Supply, Dual (V±)	±2V ~ 6V	±2V ~ 6V	±15V	±15V	±5V ~ 15V
Switch Time (Ton, Toff) (Max)	110ns, 90ns	110ns, 90ns	65ns, 65ns	65ns, 65ns	118ns, 97ns
Charge Injection	2pC	2pC	-5pC	-5pC	22pC
Current - Leakage (IS(off)) (Max)	1nA	1nA	1nA	1nA	500pA
Crosstalk	-90dB @ 100kHz	-90dB @ 100kHz	-100dB @ 100kHz	-100dB @ 100kHz	-85dB @ 1MHz
Operating Temperature	-40°C ~ 85°C (TA)	-40°C ~ 85°C (TA)	-40°C ~ 85°C (TA)	-40°C ~ 85°C (TA)	-40°C ~ 125°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)	16-SOIC (0.154", 3.90mm Width)	16-SOIC (0.154", 3.90mm Width)
Packaging Type	Standard	Tube	Tube	Tape & Reel (TR)	Tape & Reel (TR)
RoHS Status	RoHS non-compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant
Moisture Sensitivity Level (MSL)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)

Engineering Selection Recommendations

MAX4551ESE+ (Direct Upgrade) Select this part for designs requiring minimal change from the obsolete MAX4551ESE. Electrical specifications are identical, ensuring drop-in compatibility. The MAX4551ESE+ is active in production and ROHS3 compliant, addressing regulatory requirements while maintaining the original performance envelope. Packaging is available in Tube format.

DG271BDY-E3 / DG271BDY-T1-E3 (Vishay Siliconix Alternative) These parts provide improved on-state resistance (50Ohm versus 120Ohm) and superior crosstalk isolation (-100dB @ 100kHz). Supply voltage specification differs (±15V dual supply only, no single supply option). Select these parts when lower on-state resistance and enhanced signal isolation are beneficial to circuit performance. DG271BDY-E3 is packaged in Tube; DG271BDY-T1-E3 is packaged in Tape & Reel (TR) for high-volume production. Both are ROHS3 compliant and active in production.

DG454EY-T1-E3 (Vishay Siliconix High-Performance Alternative) This part delivers the lowest on-state resistance (5.3Ohm) and extended operating temperature range (-40°C ~ 125°C). Supply voltage range is ±5V ~ 15V dual supply with single supply option (12V ~ 36V). Select this part for applications requiring minimal signal path resistance, improved thermal performance, or operation in elevated temperature environments. Packaged in Tape & Reel (TR) format. ROHS3 compliant and active in production.

Frequently Asked Questions (FAQ)

Q: Can MAX4551ESE+ be used as a direct replacement for MAX4551ESE? A: Yes. The MAX4551ESE+ maintains identical electrical specifications including on-state resistance (120Ohm), supply voltage ranges (2V ~ 12V single, ±2V ~ 6V dual), and switching characteristics. The primary difference is product status (active versus obsolete) and RoHS compliance. Pin configuration and package dimensions are identical.

Q: What are the key differences between the Vishay DG271 and DG454 alternatives? A: The DG271BDY series provides 50Ohm on-state resistance with ±15V dual supply operation. The DG454EY-T1-E3 provides superior 5.3Ohm on-state resistance with extended temperature range (-40°C ~ 125°C) and broader supply voltage options (12V ~ 36V single, ±5V ~ 15V dual). Select DG271 for applications requiring moderate resistance reduction; select DG454 for applications requiring minimal signal path resistance or high-temperature operation.

Q: Are all substitute parts available in the same package? A: Yes. All substitute parts use the 16-SOIC (0.154", 3.90mm Width) surface mount package, ensuring mechanical compatibility. Packaging format differs: MAX4551ESE+ is supplied in Tube; DG271BDY-E3 is supplied in Tube; DG271BDY-T1-E3 and DG454EY-T1-E3 are supplied in Tape & Reel (TR) format for automated assembly.

Q: Do all substitute parts meet RoHS requirements? A: The original MAX4551ESE is RoHS non-compliant. All substitute parts (MAX4551ESE+, DG271BDY-E3, DG271BDY-T1-E3, and DG454EY-T1-E3) are ROHS3 compliant, meeting current environmental and regulatory standards.

Q: What supply voltage considerations apply when selecting substitutes? A: The MAX4551ESE and MAX4551ESE+ support 2V ~ 12V single supply or ±2V ~ 6V dual supply. DG271 parts support only ±15V dual supply (no single supply option). DG454EY-T1-E3 supports 12V ~ 36V single supply or ±5V ~ 15V dual supply. Verify your circuit's supply voltage configuration before selection.

Q: Can DG271 or DG454 parts be used in applications designed for the original MAX4551ESE? A: Functional substitution is possible if circuit design accommodates the different supply voltage specifications and on-state resistance values. DG271 and DG454 parts maintain the same switch circuit configuration (SPST - NC), circuit count (4), and package format (16-SOIC). Circuit simulation or testing is necessary to confirm performance in your specific application topology.

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