MAX802LCSA+ Equivalent & Substitute Parts

Part Overview

The MAX802LCSA+ is a single-channel supervisor IC manufactured by Analog Devices Inc./Maxim Integrated, designed for battery backup circuit applications. This Power Management (PMIC) device operates as a push-pull, totem pole output supervisor with active-low reset functionality. The part is currently active in production with 625 units in stock. Finding equivalent and substitute parts is necessary to ensure design flexibility, manage supply chain continuity, and accommodate varying operational temperature requirements across different application environments.

Key Parameters

Parameter	Value
Manufacturer Part Number	MAX802LCSA+
Manufacturer	Analog Devices Inc./Maxim Integrated
Category	Power Management (PMIC)
Type	Battery Backup Circuit
Number of Voltages Monitored	1
Voltage - Threshold	4.65V
Output Type	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
RoHS Status	ROHS3 Compliant
Moisture Sensitivity Level (MSL)	1 (Unlimited)

Substitute Part Grouping Explanation

Substitution eligibility for the MAX802LCSA+ is determined by strict alignment of the following critical parameters:

Primary Substitution Criteria:

Voltage threshold: 4.65V
Number of voltages monitored: 1 channel
Package type: 8-SOIC form factor
Reset polarity: Active Low
Output configuration: Push-Pull, Totem Pole
Mounting type: Surface Mount
RoHS3 compliance and MSL Level 1 rating

Secondary Considerations:

Reset timeout duration (140ms minimum for MAX802LCSA+)
Operating temperature range (0°C ~ 70°C for MAX802LCSA+)
Packaging format (Tube, Cut Tape & Reel, or Tape & Reel)

Parts are grouped into three categories: parametric equivalents (identical electrical specifications), direct matches (same part number), and manufacturer-recommended alternatives (extended temperature range or different reset timeout specifications).

Parameter Comparison

Part Number	Manufacturer	Voltage Threshold	Output Type	Reset Timeout	Operating Temperature	Package	Inventory
MAX802LCSA+	Analog Devices Inc./Maxim Integrated	4.65V	Push-Pull, Totem Pole	140ms Min	0°C ~ 70°C	8-SOIC, Tube	625 Pcs
MAX690ACSA+	Analog Devices Inc./Maxim Integrated	4.65V	Push-Pull, Totem Pole	140ms Min	0°C ~ 70°C	8-SOIC, Tube	4200 Pcs
MAX703CSA+	Analog Devices Inc./Maxim Integrated	4.65V	Push-Pull, Totem Pole	140ms Min	0°C ~ 70°C	8-SOIC, Tube	2900 Pcs
ADM690AARNZ	Analog Devices Inc.	4.65V	Push-Pull, Totem Pole	140ms Min	-40°C ~ 85°C	8-SOIC, Tube	1435 Pcs
ADM690AARNZ-REEL	Analog Devices Inc.	4.65V	Push-Pull, Totem Pole	140ms Min	-40°C ~ 85°C	8-SOIC, Cut Tape & Digi-Reel®	10300 Pcs
ADM802LARNZ	Analog Devices Inc.	4.65V	Push-Pull, Totem Pole	140ms Min	-40°C ~ 85°C	8-SOIC, Tube	50100 Pcs
ADM802LARNZ-REEL	Analog Devices Inc.	4.65V	Push-Pull, Totem Pole	140ms Min	-40°C ~ 85°C	8-SOIC, Tape & Reel	980 Pcs
ADM8690ARNZ	Analog Devices Inc.	4.65V	Push-Pull, Totem Pole	35ms Min	-40°C ~ 85°C	8-SOIC, Tube	2200 Pcs
LTC690CS8#PBF	Analog Devices Inc.	4.65V	Open Drain or Open Collector	35ms Min	0°C ~ 70°C	8-SO, Tube	1845 Pcs
LTC690CS8#TRPBF	Analog Devices Inc.	4.65V	Open Drain or Open Collector	35ms Min	0°C ~ 70°C	8-SO, Tape & Reel	2013 Pcs

Engineering Selection Recommendations

Parametric Equivalents (Identical Electrical Specifications): MAX690ACSA+ and MAX703CSA+ are direct parametric equivalents to MAX802LCSA+, sharing identical voltage threshold, output configuration, reset timeout, and operating temperature range. Both parts maintain ROHS3 compliance and MSL Level 1 rating. MAX690ACSA+ offers significantly higher inventory availability (4200 units) compared to the primary part.

Extended Temperature Range Alternatives: ADM690AARNZ, ADM690AARNZ-REEL, ADM802LARNZ, and ADM802LARNZ-REEL extend the operating temperature range to -40°C ~ 85°C while maintaining all other electrical parameters. These parts are suitable for applications requiring wider temperature operation. ADM802LARNZ provides the highest inventory level (50100 units) among all substitutes. Packaging format varies: tube, cut tape & reel, or tape & reel configurations.

Modified Reset Timeout Alternative: ADM8690ARNZ operates with a 35ms minimum reset timeout instead of 140ms, representing a faster reset response. This part is suitable only for applications where the shorter reset timeout is acceptable or beneficial. Extended temperature range (-40°C ~ 85°C) is also provided.

Output Configuration Variant: LTC690CS8#PBF and LTC690CS8#TRPBF feature open drain or open collector output instead of push-pull, totem pole configuration. These parts are not direct substitutes and require circuit redesign to accommodate the different output topology. Selection is appropriate only when open drain output is functionally compatible with the application.

All recommended parts maintain ROHS3 compliance, MSL Level 1 rating, and 8-SOIC package form factor, ensuring mechanical and environmental compatibility with the original design.

Frequently Asked Questions (FAQ)

Q: Can MAX690ACSA+ directly replace MAX802LCSA+ without circuit modification? A: Yes. MAX690ACSA+ is a parametric equivalent with identical voltage threshold (4.65V), output type (push-pull, totem pole), reset timeout (140ms minimum), and operating temperature range (0°C ~ 70°C). The 8-SOIC package and pin configuration are compatible. No circuit redesign is required.

Q: What is the difference between ADM802LARNZ and MAX802LCSA+? A: ADM802LARNZ maintains identical electrical specifications but extends the operating temperature range to -40°C ~ 85°C compared to MAX802LCSA+'s 0°C ~ 70°C. All other parameters—voltage threshold, output configuration, reset timeout, and package—remain identical. Selection depends on application temperature requirements.

Q: Why are LTC690CS8#PBF and LTC690CS8#TRPBF listed as substitutes if they have different output types? A: LTC690CS8 variants feature open drain or open collector output instead of push-pull, totem pole configuration. These parts are functionally different and require circuit modification. They are listed as alternatives only for applications where open drain output is acceptable or preferred. Direct substitution without circuit redesign is not possible.

Q: What is the significance of the 35ms versus 140ms reset timeout difference? A: Reset timeout determines the duration the supervisor holds the reset signal active after power supply stabilization. MAX802LCSA+ specifies 140ms minimum, while ADM8690ARNZ specifies 35ms minimum. The longer timeout provides extended reset assertion time, which may be necessary for certain microcontroller or system initialization sequences. Shorter timeout enables faster system recovery. Application requirements determine which is appropriate.

Q: Can I use ADM690AARNZ-REEL (cut tape & reel) in place of MAX802LCSA+ (tube packaging)? A: Yes, from an electrical and functional standpoint. ADM690AARNZ-REEL is electrically identical to MAX802LCSA+. The difference is packaging format: cut tape & reel versus tube. This affects handling, storage, and assembly processes but not component performance. Verify that your assembly equipment and processes support the reel format.

Q: Are all substitute parts ROHS3 compliant? A: Yes. All listed substitute parts maintain ROHS3 compliance and MSL Level 1 (unlimited moisture sensitivity) rating, matching the environmental and regulatory status of MAX802LCSA+.

Q: Which substitute offers the best inventory availability? A: ADM802LARNZ provides the highest inventory level at 50100 units. This part extends the operating temperature range to -40°C ~ 85°C while maintaining all other electrical specifications identical to MAX802LCSA+.

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