MAX703CSA Equivalent & Substitute Parts

Part Overview

The MAX703CSA is a supervisor integrated circuit from Analog Devices Inc./Maxim Integrated designed for power management applications. It functions as a battery backup circuit supervisor with push-pull, totem pole output configuration and active low reset functionality. The MAX703CSA is classified as obsolete, which necessitates identification of equivalent and substitute components for ongoing design support and procurement continuity. Equivalent parts maintain identical electrical and mechanical specifications, while substitute parts provide functional alternatives within the same product category and package format.

Key Parameters

Parameter	Specification
Manufacturer Part Number	MAX703CSA
Manufacturer	Analog Devices Inc./Maxim Integrated
Category	Power Management (PMIC)
Type	Battery Backup Circuit
Number of Voltages Monitored	1
Voltage - Threshold	4.65V
Output Configuration	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
Moisture Sensitivity Level (MSL)	1 (Unlimited)
RoHS Status	RoHS non-compliant
REACH Status	REACH Unaffected
Product Status	Obsolete

Substitute Part Grouping Explanation

Substitution eligibility for the MAX703CSA is determined by the following critical parameters:

Electrical Compatibility Requirements:

Voltage threshold: 4.65V
Output configuration: Push-Pull, Totem Pole
Reset polarity: Active Low
Reset timeout: 140ms Minimum
Number of voltages monitored: 1 channel

Mechanical Compatibility Requirements:

Package type: 8-SOIC
Package dimensions: 0.154" width (3.90mm)
Mounting type: Surface Mount

Regulatory & Environmental Requirements:

Moisture Sensitivity Level: 1 (Unlimited)
REACH Status: REACH Unaffected
ECCN: EAR99

Substitute parts are grouped into two categories: direct manufacturer equivalents (same base product number with different packaging or compliance status) and parametric equivalents (different manufacturer or base product number with identical electrical and mechanical specifications).

Parameter Comparison

Parameter	MAX703CSA	MAX703CSA+	MAX690ACSA+	STM703M6F	MAX802LCSA+
Manufacturer	Analog Devices Inc./Maxim Integrated	Analog Devices Inc./Maxim Integrated	Analog Devices Inc./Maxim Integrated	STMicroelectronics	Analog Devices Inc./Maxim Integrated
Product Status	Obsolete	Active	Active	Active	Active
Type	Battery Backup Circuit	Battery Backup Circuit	Battery Backup Circuit	Simple Reset/Power-On Reset	Battery Backup Circuit
Voltage - Threshold	4.65V	4.65V	4.65V	4.65V	4.65V
Output Configuration	Push-Pull, Totem Pole	Push-Pull, Totem Pole	Push-Pull, Totem Pole	Push-Pull, Totem Pole	Push-Pull, Totem Pole
Reset	Active Low	Active Low	Active Low	Active Low	Active Low
Reset Timeout	140ms Minimum	140ms Minimum	140ms Minimum	140ms Minimum	140ms Minimum
Operating Temperature	0°C ~ 70°C (TA)	0°C ~ 70°C (TA)	0°C ~ 70°C (TA)	-40°C ~ 85°C (TA)	0°C ~ 70°C (TA)
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)
Mounting Type	Surface Mount	Surface Mount	Surface Mount	Surface Mount	Surface Mount
Moisture Sensitivity Level (MSL)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)
RoHS Status	RoHS non-compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant
REACH Status	REACH Unaffected	REACH Unaffected	REACH Unaffected	REACH Unaffected	REACH Unaffected
Packaging	Not specified	Tube	Tube	Tape & Reel (TR)	Tube
Inventory Status	2227 Pcs New Original In Stock	2900 Pcs New Original In Stock	4200 Pcs New Original In Stock	679 Pcs New Original In Stock	625 Pcs New Original In Stock

Engineering Selection Recommendations

MAX703CSA+ (Direct Manufacturer Equivalent)

The MAX703CSA+ is the direct successor to the MAX703CSA, manufactured by Analog Devices Inc./Maxim Integrated. It maintains identical electrical specifications and package format while offering improved product status (Active vs. Obsolete) and ROHS3 compliance. This part is the primary recommended substitute for new designs and ongoing procurement. Packaging is supplied in tube format with higher inventory availability (2900 units).

MAX690ACSA+ (Parametric Equivalent)

The MAX690ACSA+ is a parametric equivalent from Analog Devices Inc./Maxim Integrated with identical electrical and mechanical specifications to the MAX703CSA. It differs only in base product number (MAX690 vs. MAX703) while maintaining all critical functional parameters. Product status is Active with ROHS3 compliance. Inventory availability is highest among all substitutes (4200 units). This part is suitable for applications where the MAX703CSA+ is unavailable.

MAX802LCSA+ (Parametric Equivalent)

The MAX802LCSA+ is a parametric equivalent from Analog Devices Inc./Maxim Integrated meeting all electrical and mechanical requirements. It maintains identical voltage threshold, output configuration, reset polarity, and reset timeout specifications. Product status is Active with ROHS3 compliance. Inventory is limited (625 units). This part is suitable as a secondary substitute option.

STM703M6F (Cross-Manufacturer Equivalent)

The STM703M6F is manufactured by STMicroelectronics and meets all critical electrical and mechanical specifications. It provides an extended operating temperature range (-40°C ~ 85°C vs. 0°C ~ 70°C), which may be advantageous for applications requiring broader thermal performance. Product status is Active with ROHS3 compliance. Packaging is supplied in Tape & Reel format with limited inventory (679 units). This part is suitable for applications requiring extended temperature operation or when Maxim Integrated parts are unavailable.

Frequently Asked Questions (FAQ)

Q: Can MAX703CSA+ be used as a direct replacement for MAX703CSA?

A: Yes. The MAX703CSA+ is electrically and mechanically identical to the MAX703CSA. It is supplied in tube packaging and offers improved product status (Active) and ROHS3 compliance. No circuit modifications are required.

Q: What is the difference between MAX703CSA and MAX690ACSA+?

A: Both parts share identical electrical specifications (4.65V threshold, push-pull totem pole output, active low reset, 140ms timeout) and mechanical specifications (8-SOIC package). The difference is the base product number designation (MAX703 vs. MAX690). Both are manufactured by Analog Devices Inc./Maxim Integrated and are functionally interchangeable.

Q: Why does STM703M6F have a different operating temperature range?

A: The STM703M6F is manufactured by STMicroelectronics and is specified for -40°C ~ 85°C operation, compared to 0°C ~ 70°C for the Maxim Integrated parts. This extended range may be beneficial for industrial or automotive applications but is not required for standard commercial temperature operation.

Q: Are all substitute parts in the same package?

A: Yes. All substitute parts use the 8-SOIC package with 0.154" (3.90mm) width. They are all surface mount components and are mechanically interchangeable on the PCB.

Q: What is the difference between tube and tape & reel packaging?

A: Tube packaging (MAX703CSA+, MAX690ACSA+, MAX802LCSA+) is typically used for lower-volume orders and manual assembly. Tape & Reel packaging (STM703M6F) is used for high-volume automated assembly. Both formats contain the same component; the difference is in handling and storage format.

Q: Are all substitute parts RoHS compliant?

A: The original MAX703CSA is RoHS non-compliant. All substitute parts (MAX703CSA+, MAX690ACSA+, MAX802LCSA+, STM703M6F) are ROHS3 compliant, meeting current environmental regulations.

Q: Which substitute part has the best inventory availability?

A: MAX690ACSA+ has the highest inventory availability with 4200 units in stock, followed by MAX703CSA+ with 2900 units.

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