MAX705CSA Equivalent & Substitute Parts

Part Overview

The MAX705CSA is a power management integrated circuit (PMIC) functioning as a supervisor with push-pull, totem pole output configuration. It monitors a single voltage channel with a 4.65V threshold and provides active-low reset signaling with a 140ms minimum timeout. The device is packaged in an 8-SOIC surface mount package and operates across the 0°C to 70°C temperature range.

The MAX705CSA is classified as obsolete. Equivalent and substitute parts are necessary to maintain design continuity, ensure supply chain availability, and meet current manufacturing compliance standards including RoHS3 certification.

Key Parameters

Parameter	Value
Manufacturer Part Number	MAX705CSA
Manufacturer	Analog Devices Inc./Maxim Integrated
Category	Power Management (PMIC)
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	0°C ~ 70°C (TA)
Package / Case	8-SOIC (0.154", 3.90mm Width)
Mounting Type	Surface Mount
Product Status	Obsolete
RoHS Status	RoHS non-compliant
Moisture Sensitivity Level (MSL)	1 (Unlimited)

Substitute Part Grouping Explanation

Substitution of the MAX705CSA is determined by strict equivalence across the following critical parameters:

Voltage threshold: 4.65V
Output configuration: Push-Pull, Totem Pole
Reset polarity: Active Low
Reset timeout: 140ms minimum
Package: 8-SOIC surface mount
Single voltage channel monitoring
Moisture sensitivity level: 1 (Unlimited)

Substitute parts are grouped into three categories based on substitution type:

Direct Manufacturer Equivalent: MAX705CSA+ maintains identical electrical specifications and packaging. This part differs only in product status (Active vs. Obsolete) and RoHS compliance (ROHS3 Compliant).

Parametric Equivalents: MAX709LCSA+ and MAX7705CSA+ meet all critical electrical and mechanical parameters. These parts are from the same manufacturer family with different base product numbers but identical functional specifications for the monitored application.

Manufacturer Recommended Alternatives: ADM705ARZ, ADM705ARZ-REEL, ADM705ARZ-REEL7, MIC705MY, MIC705MY-TR, SP705CN-L/TR, and SP705EN-L/TR are cross-manufacturer alternatives meeting core functional requirements. These parts may differ in operating temperature range or reset timeout specifications while maintaining compatibility with the primary application parameters.

Parameter Comparison

Parameter	MAX705CSA	MAX705CSA+	MAX709LCSA+	MAX7705CSA+	ADM705ARZ	MIC705MY	SP705EN-L/TR
Manufacturer	Analog Devices Inc./Maxim Integrated	Analog Devices Inc./Maxim Integrated	Analog Devices Inc./Maxim Integrated	Analog Devices Inc./Maxim Integrated	Analog Devices Inc.	Microchip Technology	MaxLinear, Inc.
Voltage - Threshold	4.65V	4.65V	4.65V	4.65V	4.65V	4.65V	4.65V
Output	Push-Pull, Totem Pole	Push-Pull, Totem Pole	Push-Pull, Totem Pole	Push-Pull, Totem Pole	Push-Pull, Totem Pole	Not Specified	Not Specified
Reset	Active Low	Active Low	Active Low	Active Low	Active Low	Active Low	Active Low
Reset Timeout	140ms Minimum	140ms Minimum	140ms Minimum	140ms Minimum	160ms Minimum	140ms Minimum	140ms Minimum
Operating Temperature	0°C ~ 70°C	0°C ~ 70°C	0°C ~ 70°C	0°C ~ 70°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)	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	Surface Mount	Surface Mount	Surface Mount
Product Status	Obsolete	Active	Active	Active	Active	Active	Active
RoHS Status	RoHS non-compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant
Moisture Sensitivity Level (MSL)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)

Engineering Selection Recommendations

For Direct Replacement: MAX705CSA+ is the primary substitute, offering identical electrical and mechanical specifications with active product status and ROHS3 compliance. This part requires no design modification and provides the most direct path for obsolescence mitigation.

For Extended Temperature Range Applications: ADM705ARZ, ADM705ARZ-REEL, ADM705ARZ-REEL7, MIC705MY, MIC705MY-TR, and SP705EN-L/TR extend the operating temperature range to -40°C ~ 85°C. These parts are suitable for applications requiring operation beyond the original 0°C ~ 70°C specification. ADM705ARZ variants specify a 160ms minimum reset timeout compared to the 140ms of the original part; verify timing requirements before selection.

For Parametric Equivalence: MAX709LCSA+ and MAX7705CSA+ maintain identical specifications to MAX705CSA+ while offering alternative base product numbers from the same manufacturer family. These parts are suitable when MAX705CSA+ availability is constrained.

For Cross-Manufacturer Alternatives: SP705EN-L/TR from MaxLinear, Inc. provides the widest availability (34,020 units in stock) with extended temperature range and ROHS3 compliance. MIC705MY and MIC705MY-TR from Microchip Technology offer alternative sourcing with extended temperature operation.

All substitute parts maintain the 8-SOIC package footprint, surface mount configuration, and MSL 1 rating. Selection should prioritize product status (Active), RoHS compliance (ROHS3 Compliant), and temperature range requirements for the target application.

Frequently Asked Questions (FAQ)

Q: Can MAX705CSA+ be used as a direct replacement for MAX705CSA?

A: Yes. MAX705CSA+ is electrically and mechanically identical to MAX705CSA. The primary differences are product status (Active vs. Obsolete) and RoHS compliance (ROHS3 Compliant vs. RoHS non-compliant). No design modifications are required.

Q: What is the difference between MAX705CSA+ and ADM705ARZ?

A: Both parts share the 4.65V threshold, active-low reset, and 8-SOIC package. ADM705ARZ extends the operating temperature range to -40°C ~ 85°C (compared to 0°C ~ 70°C) and specifies a 160ms minimum reset timeout (compared to 140ms). Select ADM705ARZ for applications requiring extended temperature operation; verify the longer reset timeout is acceptable for your circuit.

Q: Are MAX709LCSA+ and MAX7705CSA+ true equivalents?

A: Yes. Both parts meet all critical electrical parameters: 4.65V threshold, push-pull totem pole output, active-low reset, 140ms minimum timeout, and 8-SOIC packaging. They differ only in base product number designation within the Analog Devices family.

Q: What is the advantage of SP705EN-L/TR over other substitutes?

A: SP705EN-L/TR offers the highest inventory availability (34,020 units) with extended temperature range (-40°C ~ 85°C), ROHS3 compliance, and identical 140ms reset timeout. It is suitable for applications requiring extended temperature operation with maximum supply chain availability.

Q: Do MIC705MY and MIC705MY-TR differ functionally?

A: No. Both parts are functionally identical. MIC705MY is supplied in Tube packaging, while MIC705MY-TR is supplied in Tape & Reel (TR) format. Selection depends on assembly process requirements and packaging preferences.

Q: Can I use a substitute part with a longer reset timeout?

A: ADM705ARZ, ADM705ARZ-REEL, ADM705ARZ-REEL7, MIC705MY, MIC705MY-TR, and SP705EN-L/TR specify 140ms minimum reset timeout, matching the original. ADM705ARZ variants specify 160ms minimum. Verify that the longer timeout does not violate system timing requirements before selection.

Q: Are all substitute parts RoHS3 compliant?

A: Yes. All substitute parts listed are ROHS3 Compliant. The original MAX705CSA is RoHS non-compliant. Substitution ensures compliance with current environmental regulations.

Q: What is the MSL rating for all parts?

A: All parts, including the original MAX705CSA and all substitutes, carry MSL 1 (Unlimited) rating, indicating no moisture sensitivity restrictions during storage or handling.

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