MAX693CWE Equivalent & Substitute Parts

Part Overview

The MAX693CWE is a supervisor integrated circuit designed for battery backup circuit applications, manufactured by Analog Devices Inc./Maxim Integrated. This single-channel power management IC monitors voltage levels and provides active high/active low reset functionality with a 35ms minimum reset timeout. The device is classified as obsolete, which necessitates identification of functionally equivalent alternatives for new designs and ongoing production requirements. Substitute parts must maintain compatibility across voltage monitoring thresholds, output configurations, and package specifications while meeting current compliance standards.

Substiute Parts

MAX693CWE

Analog Devices Inc./Maxim IntegratedIn Stock: 1492MAX693CWE Datasheet

Current PartRFQ

MAX693CWE+

Analog Devices Inc./Maxim IntegratedIn Stock: 1957MAX693CWE+ Datasheet

DirectRFQ

ADM693ARZ

Analog Devices Inc.In Stock: 1323ADM693ARZ Datasheet

MFR RecommendedRFQ

ADM693ARZ-REEL

Analog Devices Inc.In Stock: 3815ADM693ARZ-REEL Datasheet

MFR RecommendedRFQ

LTC693CSW

Analog Devices Inc.In Stock: 3893LTC693CSW Datasheet

MFR RecommendedRFQ

LTC693CSW#PBF

Analog Devices Inc.In Stock: 1011LTC693CSW#PBF Datasheet

MFR RecommendedRFQ

LTC693CSW#TRPBF

Analog Devices Inc.In Stock: 1208LTC693CSW#TRPBF Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the MAX693CWE is determined by the following critical parameters:

Primary Compatibility Criteria:

• Single-channel voltage monitoring capability
• 4.4V voltage threshold setting
• 16-SOIC package form factor
• Surface mount technology
• Active High/Active Low reset functionality
• Moisture Sensitivity Level 1

Secondary Compatibility Considerations:

• Output configuration (Push-Pull vs. Open Drain/Open Collector)
• Reset timeout duration (35ms minimum vs. 140ms minimum)
• Operating temperature range (0°C ~ 70°C vs. -40°C ~ 85°C)
• Product status and compliance certifications

Substitute parts are grouped into two categories based on output configuration compatibility:

Group 1 - Push-Pull Output (Direct Functional Match): MAX693CWE+ maintains identical output configuration and reset timeout specifications, providing direct substitution capability.

Group 2 - Open Drain/Open Collector Output (Functional Equivalents with Design Considerations): ADM693ARZ, ADM693ARZ-REEL, LTC693CSW, LTC693CSW#PBF, and LTC693CSW#TRPBF provide equivalent voltage monitoring and reset functionality but feature open drain or open collector output stages. These parts require circuit-level evaluation to confirm compatibility with existing pull-up resistor networks and load configurations.

Parameter Comparison

Engineering Selection Recommendations

For Direct Replacement (Identical Electrical and Mechanical Compatibility):

MAX693CWE+ is the primary substitute for MAX693CWE. Both parts maintain identical voltage threshold (4.4V), output configuration (Push-Pull), reset timeout (35ms minimum), and operating temperature range (0°C ~ 70°C). MAX693CWE+ is currently in active production status and complies with ROHS3 standards, addressing the obsolescence and compliance limitations of the original MAX693CWE. Packaging options include Tube format for standard applications.

For Extended Temperature Range Applications:

ADM693ARZ and ADM693ARZ-REEL extend the operating temperature range to -40°C ~ 85°C, suitable for industrial and automotive environments. These parts maintain the 4.4V voltage threshold and 35ms reset timeout but feature open drain output configuration on the first channel. ADM693ARZ-REEL is available in Cut Tape and Digi-Reel packaging for high-volume production. Both variants comply with ROHS3 standards.

For Applications with Extended Reset Timeout Requirements:

LTC693CSW, LTC693CSW#PBF, and LTC693CSW#TRPBF provide 140ms minimum reset timeout, suitable for applications requiring extended power-on reset sequencing. These parts maintain the 4.4V voltage threshold and 0°C ~ 70°C operating range but feature open drain or open collector output configuration. Packaging options include Tube (LTC693CSW, LTC693CSW#PBF) and Tape & Reel (LTC693CSW#TRPBF). All variants comply with ROHS3 standards.

Compliance Considerations:

All substitute parts listed are ROHS3 compliant and REACH unaffected, addressing regulatory requirements for new designs. The original MAX693CWE is RoHS non-compliant and obsolete, making substitution necessary for ongoing production and new product development.

Frequently Asked Questions (FAQ)

Q: Can MAX693CWE+ be used as a direct drop-in replacement for MAX693CWE?

A: Yes. MAX693CWE+ maintains identical electrical specifications including 4.4V voltage threshold, Push-Pull output configuration, 35ms minimum reset timeout, and 0°C ~ 70°C operating temperature range. The primary difference is product status (Active vs. Obsolete) and RoHS compliance (ROHS3 vs. non-compliant). Mechanical compatibility is confirmed through identical 16-SOIC package specifications.

Q: What is the key difference between MAX693CWE+ and ADM693ARZ?

A: The primary difference is output configuration and operating temperature range. MAX693CWE+ maintains Push-Pull output identical to MAX693CWE, while ADM693ARZ features open drain output on the first channel. ADM693ARZ extends the operating temperature range to -40°C ~ 85°C, making it suitable for industrial applications. Both maintain the 4.4V voltage threshold and 35ms reset timeout. Circuit-level evaluation is required to confirm compatibility with existing pull-up resistor networks when transitioning from Push-Pull to open drain output.

Q: Are LTC693CSW variants suitable replacements for MAX693CWE?

A: LTC693CSW variants provide equivalent voltage monitoring and reset functionality but differ in two critical parameters: reset timeout (140ms minimum vs. 35ms minimum) and output configuration (open drain or open collector vs. Push-Pull). These parts are suitable only for applications where the extended 140ms reset timeout is acceptable and where the circuit design accommodates open drain or open collector output stages with appropriate pull-up resistor networks.

Q: What packaging options are available for substitute parts?

A: MAX693CWE+ is available in Tube packaging. ADM693ARZ is available in Tube format, while ADM693ARZ-REEL is supplied in Cut Tape and Digi-Reel packaging for automated assembly. LTC693CSW and LTC693CSW#PBF are available in Tube format, while LTC693CSW#TRPBF is supplied in Tape & Reel format. All parts maintain the 16-SOIC package form factor with 0.295" (7.50mm) width.

Q: Does substitution require circuit board modifications?

A: MAX693CWE+ requires no circuit modifications as it maintains identical output configuration. ADM693ARZ, ADM693ARZ-REEL, and LTC693CSW variants feature open drain or open collector output, which may require circuit-level evaluation to confirm compatibility with existing pull-up resistor networks and load configurations. Extended temperature range variants (ADM693ARZ series) are suitable for industrial applications without additional modifications beyond standard design validation.

Q: Are all substitute parts RoHS compliant?

A: Yes. All substitute parts listed (MAX693CWE+, ADM693ARZ, ADM693ARZ-REEL, LTC693CSW, LTC693CSW#PBF, LTC693CSW#TRPBF) comply with ROHS3 standards. The original MAX693CWE is RoHS non-compliant, making substitution necessary for designs requiring regulatory compliance.