MAX817LCSA Equivalent & Substitute Parts

Part Overview

The MAX817LCSA is a single-channel supervisor IC manufactured by Analog Devices Inc./Maxim Integrated, designed for battery backup circuit applications. This 8-SOIC surface-mount device monitors a 4.65V threshold with active-low reset output and a 140ms minimum reset timeout. The part is classified as obsolete, making equivalent and substitute parts necessary for ongoing design support and procurement.

Key Parameters

Parameter	Value
Manufacturer	Analog Devices Inc./Maxim Integrated
Category	Power Management (PMIC)
Package / Case	8-SOIC (0.154", 3.90mm Width)
Mounting Type	Surface Mount
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)
RoHS Status	RoHS non-compliant
Moisture Sensitivity Level (MSL)	1 (Unlimited)

Substitute Part Grouping Explanation

Substitution for the MAX817LCSA is determined by strict alignment of the following parameters:

Critical Parameters for Substitution:

Package / Case: 8-SOIC (0.154", 3.90mm Width)
Mounting Type: Surface Mount
Number of Voltages Monitored: 1
Voltage - Threshold: 4.65V
Reset: Active Low
Reset Timeout: 140ms Minimum

Substitution Categories:

Direct Equivalent: MAX817LCSA+ is the direct equivalent with identical electrical specifications and active product status, offering RoHS3 compliance.

Parametric Equivalents: MAX690ACSA+ and MAX703CSA+ match all critical electrical and mechanical parameters with active product status and RoHS3 compliance.

Manufacturer Recommended Alternatives: ADM690AARNZ, ADM690AARNZ-REEL, ADM802LARNZ, ADM802LARNZ-REEL, and ADM8690ARNZ provide extended operating temperature range (-40°C ~ 85°C) with identical core functionality and RoHS3 compliance.

Cross-Manufacturer Option: LTC690CS8#PBF and LTC690CS8#TRPBF from Analog Devices provide equivalent functionality with open-drain output configuration and active product status.

Parameter Comparison

Part Number	Manufacturer	Product Status	Package	Voltage Threshold	Output Type	Reset Timeout	Operating Temp	RoHS Status
MAX817LCSA	Analog Devices Inc./Maxim Integrated	Obsolete	8-SOIC	4.65V	Push-Pull, Totem Pole	140ms Min	0°C ~ 70°C	RoHS non-compliant
MAX817LCSA+	Analog Devices Inc./Maxim Integrated	Active	8-SOIC	4.65V	Push-Pull, Totem Pole	140ms Min	0°C ~ 70°C	ROHS3 Compliant
MAX690ACSA+	Analog Devices Inc./Maxim Integrated	Active	8-SOIC	4.65V	Push-Pull, Totem Pole	140ms Min	0°C ~ 70°C	ROHS3 Compliant
MAX703CSA+	Analog Devices Inc./Maxim Integrated	Active	8-SOIC	4.65V	Push-Pull, Totem Pole	140ms Min	0°C ~ 70°C	ROHS3 Compliant
ADM690AARNZ	Analog Devices Inc.	Active	8-SOIC	4.65V	Push-Pull, Totem Pole	140ms Min	-40°C ~ 85°C	ROHS3 Compliant
ADM690AARNZ-REEL	Analog Devices Inc.	Active	8-SOIC	4.65V	Push-Pull, Totem Pole	140ms Min	-40°C ~ 85°C	ROHS3 Compliant
ADM802LARNZ	Analog Devices Inc.	Active	8-SOIC	4.65V	Push-Pull, Totem Pole	140ms Min	-40°C ~ 85°C	ROHS3 Compliant
ADM802LARNZ-REEL	Analog Devices Inc.	Active	8-SOIC	4.65V	Push-Pull, Totem Pole	140ms Min	-40°C ~ 85°C	ROHS3 Compliant
ADM8690ARNZ	Analog Devices Inc.	Active	8-SOIC	4.65V	Push-Pull, Totem Pole	35ms Min	-40°C ~ 85°C	ROHS3 Compliant
LTC690CS8#PBF	Analog Devices Inc.	Active	8-SOIC	4.65V	Open Drain or Open Collector	35ms Min	0°C ~ 70°C	ROHS3 Compliant
LTC690CS8#TRPBF	Analog Devices Inc.	Active	8-SOIC	4.65V	Open Drain or Open Collector	35ms Min	0°C ~ 70°C	ROHS3 Compliant

Engineering Selection Recommendations

For Direct Replacement with Compliance Upgrade: Select MAX817LCSA+ for immediate substitution. This part maintains identical electrical and thermal specifications while providing active product status and RoHS3 compliance, eliminating the obsolescence risk of the original MAX817LCSA.

For Extended Temperature Range Applications: ADM690AARNZ, ADM690AARNZ-REEL, ADM802LARNZ, and ADM802LARNZ-REEL extend the operating temperature range to -40°C ~ 85°C while maintaining all core electrical parameters. These parts are suitable for industrial and automotive environments requiring wider temperature operation.

For Faster Reset Timeout Requirements: ADM8690ARNZ provides a 35ms minimum reset timeout compared to the 140ms specification of the original part. This faster response is applicable only if circuit design permits the reduced timeout interval.

For Open-Drain Output Configurations: LTC690CS8#PBF and LTC690CS8#TRPBF offer open-drain output topology as an alternative to the push-pull configuration. These parts are suitable only for designs requiring open-drain reset signaling and are available in tube or tape & reel packaging.

Packaging Considerations: All substitute parts maintain the 8-SOIC package footprint. Verify packaging format (tube, cut tape, or tape & reel) matches procurement and assembly requirements.

Frequently Asked Questions (FAQ)

Q: Can MAX817LCSA be directly replaced with MAX817LCSA+? A: Yes. MAX817LCSA+ is the direct equivalent with identical electrical specifications, package, and pinout. The primary difference is active product status and RoHS3 compliance versus the obsolete, non-compliant original part.

Q: What is the key difference between push-pull and open-drain output types? A: Push-pull output (MAX817LCSA, MAX690ACSA+, MAX703CSA+, ADM690AARNZ, ADM802LARNZ, ADM8690ARNZ) actively drives both high and low logic states. Open-drain output (LTC690CS8#PBF, LTC690CS8#TRPBF) pulls low only and requires external pull-up resistor for high state. Circuit design must accommodate the selected output topology.

Q: Are all substitute parts pin-compatible with MAX817LCSA? A: All listed substitutes maintain the 8-SOIC package with identical pinout. Physical and electrical compatibility is confirmed across all alternatives.

Q: What is the significance of the 140ms versus 35ms reset timeout difference? A: Reset timeout defines the minimum duration the reset output remains active after voltage threshold detection. The original MAX817LCSA specifies 140ms minimum. ADM8690ARNZ and LTC690 series specify 35ms minimum. Circuit design must verify compatibility with the selected timeout specification.

Q: Which substitute offers the widest operating temperature range? A: ADM690AARNZ, ADM690AARNZ-REEL, ADM802LARNZ, ADM802LARNZ-REEL, and ADM8690ARNZ all operate from -40°C ~ 85°C, compared to 0°C ~ 70°C for the original MAX817LCSA and other substitutes. Extended range is required for industrial and automotive applications.

Q: What packaging options are available for high-volume procurement? A: Tape & reel packaging is available for ADM690AARNZ-REEL, ADM802LARNZ-REEL, and LTC690CS8#TRPBF. Tube packaging is available for all other parts. Select packaging format based on assembly equipment and volume requirements.

Q: Are all substitute parts RoHS3 compliant? A: All active substitute parts listed are RoHS3 compliant. The original MAX817LCSA is RoHS non-compliant. Compliance upgrade is achieved through substitution.

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