MAX4551EEE Equivalent & Substitute Parts

Part Overview

The MAX4551EEE is a 4-circuit IC switch with SPST-NC (Single Pole Single Throw - Normally Closed) configuration manufactured by Analog Devices Inc./Maxim Integrated. This interface component operates across a supply voltage range of 2V to 12V (single supply) or ±2V to ±6V (dual supply), with an on-state resistance of 120Ohm maximum and switch times of 110ns (Ton) and 90ns (Toff).

The MAX4551EEE is classified as obsolete. Locating equivalent and substitute parts is necessary to support legacy system maintenance, design updates, and procurement continuity. Active alternatives with compatible electrical and mechanical characteristics are available from Analog Devices Inc. and Vishay Siliconix.

Key Parameters

Parameter	MAX4551EEE
Switch Circuit	SPST - NC
Multiplexer/Demultiplexer Circuit	1:1
Number of Circuits	4
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-SSOP (0.154", 3.90mm Width)
Product Status	Obsolete
RoHS Status	RoHS non-compliant

Substitute Part Grouping Explanation

Substitution eligibility for the MAX4551EEE is determined by the following core parameters:

Functional Compatibility:

Switch circuit type: SPST - NC (Single Pole Single Throw - Normally Closed)
Multiplexer/Demultiplexer configuration: 1:1
Number of circuits: 4

Electrical Operating Range:

Supply voltage compatibility (single or dual supply modes)
On-state resistance within acceptable application limits
Switch timing characteristics (Ton, Toff)
Leakage current specifications
Operating temperature range

Mechanical Compatibility:

Surface mount packaging
16-pin package footprint (SSOP or TSSOP variants)

The substitute parts listed below maintain the core functional architecture (4-circuit SPST-NC switch, 1:1 configuration) and surface mount 16-pin packaging. All substitutes are active products with current manufacturing status and improved electrical performance characteristics compared to the obsolete MAX4551EEE.

Parameter Comparison

Parameter	MAX4551EEE	ADG1611BRUZ	ADG1611BRUZ-REEL	ADG1611BRUZ-REEL7	DG454EQ-T1-E3
Manufacturer	Analog Devices Inc./Maxim Integrated	Analog Devices Inc.	Analog Devices Inc.	Analog Devices Inc.	Vishay Siliconix
Switch Circuit	SPST - NC	SPST - NC	SPST - NC	SPST - NC	SPST - NC
Number of Circuits	4	4	4	4	4
On-State Resistance (Max)	120Ohm	1.1Ohm	1.1Ohm	1.1Ohm	5.3Ohm
Channel-to-Channel Matching (ΔRon)	1Ohm	30mOhm	30mOhm	30mOhm	120mOhm
Voltage - Supply, Single (V+)	2V ~ 12V	3.3V ~ 16V	3.3V ~ 16V	3.3V ~ 16V	12V ~ 36V
Voltage - Supply, Dual (V±)	±2V ~ 6V	±3.3V ~ 8V	±3.3V ~ 8V	±3.3V ~ 8V	±5V ~ 15V
Switch Time (Ton, Toff) (Max)	110ns, 90ns	156ns, 87ns	156ns, 87ns	156ns, 87ns	118ns, 97ns
Charge Injection	2pC	170pC	170pC	170pC	22pC
Channel Capacitance (CS(off), CD(off))	4.6pF, 3pF	60pF, 60pF	60pF, 60pF	60pF, 60pF	31pF, 34pF
Current - Leakage (IS(off)) (Max)	1nA	300pA	300pA	300pA	500pA
Operating Temperature	-40°C ~ 85°C	-40°C ~ 125°C	-40°C ~ 125°C	-40°C ~ 125°C	-40°C ~ 125°C
Package / Case	16-SSOP (0.154", 3.90mm)	16-TSSOP (0.173", 4.40mm)	16-TSSOP (0.173", 4.40mm)	16-TSSOP (0.173", 4.40mm)	16-TSSOP (0.173", 4.40mm)
Product Status	Obsolete	Active	Active	Active	Active
RoHS Status	RoHS non-compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant

Engineering Selection Recommendations

ADG1611BRUZ, ADG1611BRUZ-REEL, ADG1611BRUZ-REEL7

These three part numbers represent the same electrical component with different packaging and distribution formats (Tube, Cut Tape & Digi-Reel, and Cut Tape & Digi-Reel variants). All are manufactured by Analog Devices Inc. and carry active product status with ROHS3 compliance. The ADG1611 series offers significantly lower on-state resistance (1.1Ohm vs. 120Ohm) and extended operating temperature range (-40°C to 125°C vs. -40°C to 85°C). These parts are suitable for applications requiring improved performance over the obsolete MAX4551EEE and compliance with modern environmental standards.

DG454EQ-T1-E3

Manufactured by Vishay Siliconix, the DG454EQ-T1-E3 is an active product with ROHS3 compliance. This part operates at higher supply voltages (12V to 36V single supply, ±5V to ±15V dual supply) and exhibits on-state resistance of 5.3Ohm. The DG454 is appropriate for applications requiring higher voltage operation and moderate resistance characteristics. Charge injection (22pC) is closer to the MAX4551EEE specification than the ADG1611 series.

Compliance and Status Considerations

All substitute parts are active products with current manufacturing support. The ADG1611 series and DG454EQ-T1-E3 are ROHS3 compliant, addressing environmental regulatory requirements that the obsolete MAX4551EEE does not meet. Selection between substitutes depends on specific application voltage requirements, resistance tolerance, and packaging format availability.

Frequently Asked Questions (FAQ)

Q: Can the ADG1611BRUZ directly replace the MAX4551EEE in existing designs?

A: The ADG1611BRUZ maintains the same functional architecture (4-circuit SPST-NC switch, 1:1 configuration) and surface mount 16-pin packaging. However, the package footprint differs slightly (16-TSSOP vs. 16-SSOP), and electrical characteristics vary significantly. PCB layout verification and electrical performance validation are required before implementation.

Q: What is the difference between ADG1611BRUZ, ADG1611BRUZ-REEL, and ADG1611BRUZ-REEL7?

A: These part numbers represent identical electrical components with different packaging and distribution formats. ADG1611BRUZ is supplied in Tube packaging. ADG1611BRUZ-REEL and ADG1611BRUZ-REEL7 are supplied in Cut Tape & Digi-Reel format with different reel quantities. Electrical specifications and performance are identical across all three variants.

Q: Is the DG454EQ-T1-E3 suitable for applications designed for the MAX4551EEE?

A: The DG454EQ-T1-E3 maintains the same switch circuit type (SPST-NC) and 4-circuit configuration. However, it operates at higher supply voltages (12V to 36V minimum vs. 2V to 12V for the MAX4551EEE). Use the DG454 only if your application voltage requirements align with its 12V to 36V single supply range.

Q: What are the key electrical differences between substitute options?

A: The primary differences are on-state resistance (ADG1611BRUZ: 1.1Ohm, DG454EQ-T1-E3: 5.3Ohm), supply voltage ranges, and charge injection characteristics. The ADG1611 series offers lower resistance and wider voltage flexibility (3.3V to 16V). The DG454 requires higher minimum supply voltage but provides charge injection closer to the original MAX4551EEE specification.

Q: Are all substitute parts RoHS compliant?

A: Yes. All listed substitute parts (ADG1611BRUZ, ADG1611BRUZ-REEL, ADG1611BRUZ-REEL7, and DG454EQ-T1-E3) are ROHS3 compliant. The original MAX4551EEE is RoHS non-compliant.

Q: What packaging considerations apply when substituting the MAX4551EEE?

A: The MAX4551EEE uses 16-SSOP packaging (0.154" width). All substitute parts use 16-TSSOP packaging (0.173" width). While both are 16-pin surface mount packages, the footprint dimensions differ. PCB layout modifications may be necessary to accommodate the slightly wider TSSOP package.

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