MAX705ESA Equivalent & Substitute Parts

Part Overview

The MAX705ESA is a power management integrated circuit (PMIC) supervisor with push-pull, totem pole output configuration. It functions as a simple reset/power-on reset device for single-channel voltage monitoring applications. The part is classified as obsolete, which necessitates identification of functionally equivalent alternatives for ongoing design support and procurement.

Key Parameters

Parameter	Value
Manufacturer Part Number	MAX705ESA
Manufacturer	Analog Devices Inc./Maxim Integrated
Category	Power Management (PMIC)
Package / Case	8-SOIC (0.154", 3.90mm Width)
Type	Simple Reset/Power-On Reset
Number of Voltages Monitored	1
Voltage - Threshold	4.65V
Output	Push-Pull, Totem Pole
Reset	Active Low
Reset Timeout	140ms Minimum
Operating Temperature	-40°C ~ 85°C (TA)
Mounting Type	Surface Mount
RoHS Status	RoHS non-compliant
Moisture Sensitivity Level (MSL)	1 (Unlimited)
Product Status	Obsolete

Substitute Part Grouping Explanation

Substitution of the MAX705ESA is determined by strict alignment of the following critical parameters:

Package / Case: 8-SOIC (0.154", 3.90mm Width) — ensures mechanical and electrical compatibility
Type: Simple Reset/Power-On Reset — functional classification
Number of Voltages Monitored: 1 — single-channel supervision requirement
Voltage - Threshold: 4.65V — voltage monitoring setpoint
Output: Push-Pull, Totem Pole — output stage configuration
Reset: Active Low — reset polarity
Reset Timeout: 140ms Minimum — timing specification
Operating Temperature: -40°C ~ 85°C (TA) — thermal operating range
Mounting Type: Surface Mount — assembly compatibility

Substitute parts are grouped into two categories: direct manufacturer equivalents (same base product number or functionally identical) and parametric equivalents (different base product number but matching all critical electrical and mechanical parameters).

Parameter Comparison

Part Number	Manufacturer	Package	Voltage Threshold	Output Type	Reset Timeout	Operating Temp	Product Status	RoHS Status
MAX705ESA	Analog Devices Inc./Maxim Integrated	8-SOIC	4.65V	Push-Pull, Totem Pole	140ms Min	-40°C ~ 85°C	Obsolete	RoHS non-compliant
MAX705ESA+	Analog Devices Inc./Maxim Integrated	8-SOIC	4.65V	Push-Pull, Totem Pole	140ms Min	-40°C ~ 85°C	Active	ROHS3 Compliant
MAX709LESA+	Analog Devices Inc./Maxim Integrated	8-SOIC	4.65V	Push-Pull, Totem Pole	140ms Min	-40°C ~ 85°C	Active	ROHS3 Compliant
STM705M6F	STMicroelectronics	8-SOIC	4.63V	Push-Pull, Totem Pole	140ms Min	-40°C ~ 85°C	Active	ROHS3 Compliant
ADM705ARZ	Analog Devices Inc.	8-SOIC	4.65V	Push-Pull, Totem Pole	160ms Min	-40°C ~ 85°C	Active	ROHS3 Compliant
ADM705ARZ-REEL	Analog Devices Inc.	8-SOIC	4.65V	Push-Pull, Totem Pole	160ms Min	-40°C ~ 85°C	Active	ROHS3 Compliant
ADM705ARZ-REEL7	Analog Devices Inc.	8-SOIC	4.65V	Push-Pull, Totem Pole	160ms Min	-40°C ~ 85°C	Active	ROHS3 Compliant
SP705EN-L/TR	MaxLinear, Inc.	8-SOIC	4.65V	Push-Pull, Totem Pole	140ms Min	-40°C ~ 85°C	Active	ROHS3 Compliant
ADM709LARZ	Analog Devices Inc.	8-SOIC	4.65V	Push-Pull, Totem Pole	140ms Min	-40°C ~ 85°C	Active	ROHS3 Compliant
ADM8699ARNZ	Analog Devices Inc.	8-SOIC	4.65V	Push-Pull, Totem Pole	140ms Min	-40°C ~ 85°C	Active	ROHS3 Compliant

Engineering Selection Recommendations

For applications currently using the obsolete MAX705ESA, the following selection criteria apply:

Direct Replacement (Same Base Product): MAX705ESA+ is the active production equivalent with identical electrical specifications and RoHS3 compliance. This part provides the most direct substitution path with no design modification required.

Manufacturer-Recommended Alternatives: The ADM705ARZ series (ADM705ARZ, ADM705ARZ-REEL, ADM705ARZ-REEL7) are manufacturer-recommended substitutes from Analog Devices Inc. These parts maintain the 4.65V threshold and push-pull output configuration. The reset timeout specification is 160ms minimum, which exceeds the original 140ms minimum requirement and is compatible with designs that do not depend on the exact 140ms timing.

Cross-Manufacturer Equivalent: The STM705M6F from STMicroelectronics provides functional equivalence with a voltage threshold of 4.63V (within tolerance of the 4.65V specification) and identical package, output type, and operating temperature range. This part is ROHS3 compliant and offers high inventory availability.

Parametric Equivalents: The MAX709LESA+, ADM709LARZ, and ADM8699ARNZ are parametric equivalents with identical electrical and mechanical specifications. These parts are suitable for applications where the specific base product number is not a design constraint.

Extended Temperature Range Alternative: The SP705EN-L/TR from MaxLinear, Inc. matches all critical parameters including the 140ms reset timeout and -40°C to 85°C operating range. This part is available in tape and reel packaging and is ROHS3 compliant.

All recommended substitutes are active production parts with ROHS3 compliance, addressing the RoHS non-compliance status of the original MAX705ESA.

Frequently Asked Questions (FAQ)

Q: Can I directly replace MAX705ESA with MAX705ESA+ without design changes?

A: Yes. The MAX705ESA+ is the active production equivalent with identical electrical specifications, package, and functional characteristics. No design modification is required.

Q: What is the difference between MAX705ESA and ADM705ARZ?

A: Both parts share the same 4.65V voltage threshold, push-pull totem pole output, active low reset, and 8-SOIC package. The primary difference is the reset timeout specification: MAX705ESA specifies 140ms minimum, while ADM705ARZ specifies 160ms minimum. The ADM705ARZ timeout is longer and compatible with designs that do not require the exact 140ms timing.

Q: Is the STM705M6F a suitable replacement?

A: Yes. The STM705M6F meets all critical substitution parameters: 8-SOIC package, 4.63V voltage threshold (within tolerance of 4.65V), push-pull totem pole output, active low reset, 140ms minimum reset timeout, and -40°C to 85°C operating temperature. It is ROHS3 compliant and offers high inventory availability.

Q: What packaging options are available for substitute parts?

A: Substitute parts are available in multiple packaging formats: tube (MAX705ESA+, MAX709LESA+, ADM705ARZ, ADM709LARZ, ADM8699ARNZ), cut tape with digi-reel (STM705M6F, ADM705ARZ-REEL, ADM705ARZ-REEL7), and tape and reel (SP705EN-L/TR). Select packaging based on procurement and assembly requirements.

Q: Are all substitute parts RoHS compliant?

A: All recommended substitute parts are ROHS3 compliant. The original MAX705ESA is RoHS non-compliant. Substitution with any recommended part addresses RoHS compliance requirements.

Q: Can I use parametric equivalents like ADM709LARZ or ADM8699ARNZ?

A: Yes. These parts are parametric equivalents with identical electrical and mechanical specifications to the MAX705ESA. They are suitable for applications where the specific base product number is not a design constraint. Both are ROHS3 compliant and active production parts.

Q: What is the operating temperature range for all substitutes?

A: All substitute parts operate across the -40°C to 85°C temperature range, matching the original MAX705ESA specification. The SP705CN-L/TR is an exception with a narrower 0°C to 70°C range and is not recommended for applications requiring the full -40°C to 85°C range.

Q: How do I select between multiple substitute options?

A: Selection depends on packaging preference, inventory availability, and specific application requirements. For direct compatibility, use MAX705ESA+. For manufacturer-recommended alternatives, use the ADM705ARZ series. For cross-manufacturer options, use STM705M6F. All options maintain the critical electrical and mechanical parameters required for substitution.

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