MAX4515ESA Equivalent & Substitute Parts

Part Overview

The MAX4515ESA is a single-circuit SPST-NC (Single Pole Single Throw - Normally Closed) analog switch manufactured by Analog Devices Inc./Maxim Integrated. This interface component operates as a 1:1 multiplexer/demultiplexer with 20Ohm on-state resistance in an 8-SOIC surface mount package. The part is currently classified as obsolete, making identification of functionally equivalent alternatives essential for ongoing design support and production continuity.

Key Parameters

Parameter	Value
Switch Circuit Type	SPST - NC
Multiplexer/Demultiplexer Configuration	1:1
Number of Circuits	1
On-State Resistance (Max)	20Ohm
Supply Voltage Range (Single)	2V ~ 12V
Switch Time - Ton (Max)	150ns
Switch Time - Toff (Max)	100ns
Charge Injection	2pC
Channel Capacitance (CS(off), CD(off))	14pF, 14pF
Leakage Current (IS(off)) Max	1nA
Operating Temperature Range	-40°C ~ 85°C
Package / Case	8-SOIC (0.154", 3.90mm Width)
Mounting Type	Surface Mount

Substitute Part Grouping Explanation

Substitution eligibility for the MAX4515ESA is determined by strict adherence to the following electrical and mechanical parameters:

Primary Compatibility Criteria:

Switch circuit topology: SPST - NC configuration
Multiplexer ratio: 1:1
Single circuit count
Package type: 8-SOIC surface mount
Operating temperature range: -40°C ~ 85°C minimum
Supply voltage compatibility: Single supply 2V ~ 12V minimum range

Secondary Electrical Parameters:

On-state resistance must not exceed 20Ohm
Leakage current (IS(off)) must not exceed 1nA
Channel capacitance specifications must be compatible with application requirements

The substitute parts identified (MAX4515ESA+, TS12A4515D, TS12A4515DR) meet all primary compatibility criteria. Differences in secondary parameters (on-state resistance, switch timing, charge injection, and capacitance) represent performance variations that may be acceptable depending on specific circuit requirements.

Parameter Comparison

Parameter	MAX4515ESA (Main)	MAX4515ESA+ (Direct)	TS12A4515D (TI)	TS12A4515DR (TI)
Manufacturer	Analog Devices Inc./Maxim	Analog Devices Inc./Maxim	Texas Instruments	Texas Instruments
Product Status	Obsolete	Active	Active	Active
Switch Circuit	SPST - NC	SPST - NC	SPST - NC	SPST - NC
Multiplexer Configuration	1:1	1:1	1:1	1:1
Number of Circuits	1	1	1	1
On-State Resistance (Max)	20Ohm	20Ohm	10Ohm	10Ohm
Supply Voltage (Single)	2V ~ 12V	2V ~ 12V	2.7V ~ 12V	2.7V ~ 12V
Switch Time - Ton (Max)	150ns	150ns	75ns	75ns
Switch Time - Toff (Max)	100ns	100ns	45ns	45ns
Charge Injection	2pC	2pC	-11.5pC	-11.5pC
Channel Capacitance (CS(off), CD(off))	14pF, 14pF	14pF, 14pF	7.5pF, 7.5pF	7.5pF, 7.5pF
Leakage Current (IS(off)) Max	1nA	1nA	1nA	1nA
Operating Temperature	-40°C ~ 85°C	-40°C ~ 85°C	-40°C ~ 85°C	-40°C ~ 85°C
Package / Case	8-SOIC (0.154", 3.90mm Width)	8-SOIC (0.154", 3.90mm Width)	8-SOIC (0.154", 3.90mm Width)	8-SOIC (0.154", 3.90mm Width)
Mounting Type	Surface Mount	Surface Mount	Surface Mount	Surface Mount
RoHS Status	RoHS non-compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant
Packaging Format	Bulk	Tube	Tube	Tape & Reel (TR)

Engineering Selection Recommendations

MAX4515ESA+ (Direct Manufacturer Equivalent)

The MAX4515ESA+ is the direct successor from Analog Devices Inc./Maxim Integrated with identical electrical specifications and 8-SOIC package configuration. This part maintains the original 20Ohm on-state resistance and timing characteristics. The primary advantage is product status transition from obsolete to active, ensuring long-term availability. The MAX4515ESA+ achieves ROHS3 compliance, addressing regulatory requirements absent in the original MAX4515ESA. This represents the preferred substitution path for designs requiring exact electrical performance matching.

TS12A4515D and TS12A4515DR (Texas Instruments Alternatives)

The TS12A4515D and TS12A4515DR from Texas Instruments provide functionally equivalent SPST-NC switching in the same 8-SOIC package. These parts deliver improved electrical performance with 10Ohm on-state resistance (50% reduction), faster switching times (75ns Ton, 45ns Toff), and reduced channel capacitance (7.5pF). Both variants maintain 1nA maximum leakage current and -40°C ~ 85°C operating range. The TS12A4515DR offers tape and reel packaging for high-volume production, while TS12A4515D provides tube packaging. Both achieve ROHS3 compliance and REACH unaffected status. Selection between these variants depends on packaging requirements and supply chain preferences.

Frequently Asked Questions (FAQ)

Q: Can the TS12A4515D replace the MAX4515ESA in existing designs without circuit modification?

A: The TS12A4515D maintains functional compatibility as a SPST-NC 1:1 switch in 8-SOIC packaging with identical operating temperature range and leakage current specifications. However, the reduced on-state resistance (10Ohm vs. 20Ohm) and faster switching times represent performance improvements that may require signal integrity verification in timing-critical applications. The minimum supply voltage increases from 2V to 2.7V, which must be confirmed against your power supply specifications.

Q: What is the difference between TS12A4515D and TS12A4515DR?

A: Both parts are electrically identical Texas Instruments SPST-NC switches with 10Ohm on-state resistance. The primary difference is packaging format: TS12A4515D is supplied in tube packaging, while TS12A4515DR is supplied in tape and reel format. Selection depends on production volume and assembly equipment compatibility. Tape and reel packaging (TS12A4515DR) is standard for automated pick-and-place assembly in high-volume manufacturing.

Q: Is the MAX4515ESA+ a direct drop-in replacement for the MAX4515ESA?

A: Yes. The MAX4515ESA+ maintains identical electrical specifications, on-state resistance (20Ohm), switching times (150ns Ton, 100ns Toff), and 8-SOIC package dimensions. The primary differences are product status (active vs. obsolete) and RoHS compliance (ROHS3 vs. non-compliant). This represents a direct substitution requiring no circuit redesign.

Q: What are the implications of the 2V to 2.7V minimum supply voltage change when using Texas Instruments alternatives?

A: The TS12A4515D and TS12A4515DR require minimum 2.7V single supply voltage compared to the MAX4515ESA's 2V minimum. Designs operating at supply voltages between 2V and 2.7V cannot use the Texas Instruments variants without power supply modification. The MAX4515ESA+ maintains the original 2V minimum specification for applications requiring lower supply voltages.

Q: How do the charge injection and capacitance differences affect circuit performance?

A: The MAX4515ESA and MAX4515ESA+ specify 2pC charge injection with 14pF channel capacitance. The TS12A4515D and TS12A4515DR specify -11.5pC charge injection with 7.5pF channel capacitance. These differences impact signal fidelity in precision analog applications. Lower capacitance values reduce parasitic loading, while charge injection magnitude affects signal settling time. Applications sensitive to these parameters require performance validation against specific circuit requirements.

Q: Are all substitute parts RoHS compliant?

A: The MAX4515ESA is RoHS non-compliant. The MAX4515ESA+, TS12A4515D, and TS12A4515DR all achieve ROHS3 compliance. If RoHS compliance is a design requirement, the original MAX4515ESA cannot be used in new designs; substitution with any of the three alternatives is necessary.

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