MAX4514ESA Equivalent & Substitute Parts

Part Overview

The MAX4514ESA is a single-circuit SPST-NO (Single Pole Single Throw - Normally Open) 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 necessary for ongoing design support and production continuity.

Key Parameters

Parameter	Value
Switch Circuit Type	SPST - NO
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 MAX4514ESA is determined by strict adherence to the following electrical and mechanical parameters:

Primary Substitution Criteria:

Switch circuit topology: SPST - NO
Multiplexer configuration: 1:1
Number of circuits: 1
Package type: 8-SOIC surface mount
Operating temperature range: -40°C ~ 85°C (minimum requirement)
Supply voltage compatibility: Single supply 2V ~ 12V (minimum)

Secondary Compatibility Parameters:

On-state resistance: Maximum 20Ohm
Leakage current: Maximum 1nA
Package dimensions: 8-SOIC (0.154", 3.90mm Width)

Parts meeting all primary criteria and secondary parameters are classified as direct substitutes. Parts with improved electrical performance (lower on-state resistance, faster switching, lower charge injection) while maintaining package and topology compatibility are classified as performance-enhanced alternatives.

Parameter Comparison

Parameter	MAX4514ESA	MAX4514ESA+	TS12A4514D	TS12A4514DR
Manufacturer	Analog Devices Inc./Maxim Integrated	Analog Devices Inc./Maxim Integrated	Texas Instruments	Texas Instruments
Product Status	Obsolete	Active	Active	Active
Switch Circuit	SPST - NO	SPST - NO	SPST - NO	SPST - NO
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 Range (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 Range	-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
Packaging Format	Not specified	Tube	Tube	Tape & Reel (TR)
RoHS Status	RoHS non-compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant

Engineering Selection Recommendations

MAX4514ESA+ (Direct Equivalent)

The MAX4514ESA+ is the direct successor from Analog Devices Inc./Maxim Integrated. It maintains identical electrical specifications (20Ohm on-state resistance, 150ns/100ns switching times, 2pC charge injection) and package configuration. The primary distinction is product status: MAX4514ESA+ is active production, whereas MAX4514ESA is obsolete. This part is ROHS3 compliant, addressing regulatory requirements for new designs. Selection of MAX4514ESA+ is appropriate for applications requiring pin-for-pin compatibility with minimal design modification.

TS12A4514D / TS12A4514DR (Performance-Enhanced Alternatives)

The Texas Instruments TS12A4514 series (available in Tube packaging as TS12A4514D or Tape & Reel as TS12A4514DR) provides enhanced electrical performance while maintaining functional compatibility. Key improvements include 50% reduction in on-state resistance (10Ohm vs. 20Ohm), 50% faster switching times (75ns/45ns vs. 150ns/100ns), and 50% reduction in channel capacitance (7.5pF vs. 14pF). Minimum supply voltage is 2.7V (vs. 2V for MAX4514ESA), which is compatible with standard 3.3V and 5V supply rails. Both variants are ROHS3 compliant and active production. Selection between TS12A4514D (Tube) and TS12A4514DR (Tape & Reel) depends on procurement and assembly requirements.

Packaging Considerations

MAX4514ESA+ is supplied in Tube packaging. TS12A4514D is supplied in Tube packaging. TS12A4514DR is supplied in Tape & Reel format, suitable for high-volume automated assembly. All three parts are compatible with standard 8-SOIC pick-and-place equipment.

Frequently Asked Questions (FAQ)

Q: Can TS12A4514D or TS12A4514DR be used as direct replacements for MAX4514ESA?

A: Yes. Both Texas Instruments parts meet all primary substitution criteria: SPST-NO topology, 1:1 configuration, single circuit, 8-SOIC package, and -40°C to 85°C operating range. The 2.7V minimum supply voltage is compatible with standard logic supply rails. The lower on-state resistance (10Ohm vs. 20Ohm) and faster switching times represent performance improvements rather than incompatibilities.

Q: What is the difference between TS12A4514D and TS12A4514DR?

A: Both parts are electrically identical. The difference is packaging format: TS12A4514D is supplied in Tube packaging for manual or small-batch assembly, while TS12A4514DR is supplied in Tape & Reel format for automated high-volume production. Selection depends on manufacturing process requirements.

Q: Is MAX4514ESA+ a direct pin-for-pin replacement?

A: Yes. MAX4514ESA+ maintains identical electrical specifications and 8-SOIC package pinout. No circuit modifications are required. The primary advantage is active production status and ROHS3 compliance.

Q: What are the key electrical differences between MAX4514ESA and TS12A4514?

A: On-state resistance is 20Ohm (MAX4514ESA) vs. 10Ohm (TS12A4514). Switch times are 150ns/100ns (MAX4514ESA) vs. 75ns/45ns (TS12A4514). Channel capacitance is 14pF (MAX4514ESA) vs. 7.5pF (TS12A4514). Minimum supply voltage is 2V (MAX4514ESA) vs. 2.7V (TS12A4514). All differences favor the TS12A4514 for signal integrity and switching performance.

Q: Are all substitute parts ROHS3 compliant?

A: MAX4514ESA is RoHS non-compliant. MAX4514ESA+, TS12A4514D, and TS12A4514DR are all ROHS3 compliant. For new designs subject to RoHS regulations, selection of compliant alternatives is required.

Q: Can these parts be used interchangeably in existing designs?

A: MAX4514ESA and MAX4514ESA+ are fully interchangeable. TS12A4514D and TS12A4514DR are interchangeable with each other and compatible with MAX4514ESA designs, provided the minimum 2.7V supply voltage requirement is met. The improved electrical performance of the Texas Instruments parts may enhance signal integrity in existing circuits.

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