MAX690AESA Equivalent & Substitute Parts

Part Overview

The MAX690AESA is a Power Management IC (PMIC) supervisor circuit manufactured by Analog Devices Inc./Maxim Integrated. This 1-channel battery backup supervisor operates in the 8-SOIC package and provides push-pull, totem pole output with active-low reset functionality. The device is classified as obsolete, making equivalent and substitute parts necessary for ongoing system support and new design implementations. Substitute parts maintain functional equivalence through matching electrical parameters and mechanical compatibility while offering active product status and improved compliance certifications.

Key Parameters

Parameter	Value
Category	Power Management (PMIC)
Type	Battery Backup Circuit / Supervisor
Number of Voltages Monitored	1
Voltage Threshold	4.65V
Output Configuration	Push-Pull, Totem Pole
Reset Logic	Active Low
Reset Timeout	140ms Minimum
Operating Temperature Range	-40°C to 85°C (TA)
Mounting Type	Surface Mount
Package / Case	8-SOIC (0.154", 3.90mm Width)
Moisture Sensitivity Level (MSL)	1 (Unlimited)

Substitute Part Grouping Explanation

Substitution eligibility is determined by strict parameter matching across electrical and mechanical specifications. All substitute parts listed maintain the following core requirements:

Single-channel voltage monitoring at 4.65V threshold
8-SOIC surface mount package (0.154", 3.90mm width)
Active-low reset configuration
Operating temperature range of -40°C to 85°C
MSL rating of 1 (Unlimited)
RoHS3 compliance (active substitutes)

Substitute parts are grouped into two categories: direct equivalents with identical reset timeout specifications (140ms minimum) and parametric equivalents with alternative reset timeout values (35ms minimum). Output configuration variations (push-pull totem pole versus open drain/open collector) are noted as functional differences that may affect circuit design requirements.

Parameter Comparison

Part Number	Manufacturer	Product Status	Output Type	Reset Timeout	Operating Temp	Package	RoHS Status	Inventory (Pcs)
MAX690AESA	Analog Devices / Maxim	Obsolete	Push-Pull, Totem Pole	140ms Min	-40°C to 85°C	8-SOIC	Non-compliant	5487
MAX690AESA+	Analog Devices / Maxim	Active	Push-Pull, Totem Pole	140ms Min	-40°C to 85°C	8-SOIC	RoHS3 Compliant	1700
MAX703ESA+	Analog Devices / Maxim	Active	Push-Pull, Totem Pole	140ms Min	-40°C to 85°C	8-SOIC	RoHS3 Compliant	2255
MAX802LESA+	Analog Devices / Maxim	Active	Push-Pull, Totem Pole	140ms Min	-40°C to 85°C	8-SOIC	RoHS3 Compliant	2000
ADM690AARNZ-REEL	Analog Devices	Active	Push-Pull, Totem Pole	140ms Min	-40°C to 85°C	8-SOIC	RoHS3 Compliant	10300
ADM802LARNZ-REEL	Analog Devices	Active	Push-Pull, Totem Pole	140ms Min	-40°C to 85°C	8-SOIC	RoHS3 Compliant	980
ADM8690ARNZ	Analog Devices	Active	Push-Pull, Totem Pole	35ms Min	-40°C to 85°C	8-SOIC	RoHS3 Compliant	2200
LTC690CS8#PBF	Analog Devices	Active	Open Drain / Open Collector	35ms Min	0°C to 70°C	8-SOIC	RoHS3 Compliant	1845
LTC690CS8#TRPBF	Analog Devices	Active	Open Drain / Open Collector	35ms Min	0°C to 70°C	8-SOIC	RoHS3 Compliant	2013
LTC690IS8#PBF	Analog Devices	Active	Open Drain / Open Collector	35ms Min	-40°C to 85°C	8-SOIC	RoHS3 Compliant	1030
LTC690IS8#TRPBF	Analog Devices	Active	Open Drain / Open Collector	35ms Min	-40°C to 85°C	8-SOIC	RoHS3 Compliant	2100

Engineering Selection Recommendations

Direct substitutes with identical electrical specifications and active product status include MAX690AESA+, MAX703ESA+, MAX802LESA+, ADM690AARNZ-REEL, and ADM802LARNZ-REEL. These parts maintain 140ms minimum reset timeout and push-pull totem pole output configuration. All direct substitutes carry RoHS3 compliance certification, addressing regulatory requirements absent in the obsolete MAX690AESA.

Parametric equivalents ADM8690ARNZ and LTC690 series parts (LTC690CS8#PBF, LTC690CS8#TRPBF, LTC690IS8#PBF, LTC690IS8#TRPBF) provide functional supervision at the 4.65V threshold with reduced reset timeout (35ms minimum) and alternative output configurations. LTC690 series devices feature open drain/open collector output rather than push-pull totem pole, requiring circuit design modifications. LTC690CS8 variants operate within 0°C to 70°C temperature range, limiting suitability for extended temperature applications.

Selection priority for new designs: MAX690AESA+ (direct equivalent, active status, RoHS3 compliant). For applications requiring extended temperature operation with open drain output: LTC690IS8#PBF or LTC690IS8#TRPBF. For cost-optimized high-volume procurement: ADM690AARNZ-REEL (highest inventory availability, 10300 units).

Frequently Asked Questions (FAQ)

Q: Can MAX690AESA be directly replaced with MAX690AESA+?

A: Yes. MAX690AESA+ is a direct equivalent with identical electrical parameters (140ms reset timeout, push-pull totem pole output, 4.65V threshold, -40°C to 85°C operating range) and 8-SOIC package compatibility. The primary difference is product status (active versus obsolete) and RoHS3 compliance certification.

Q: What is the functional difference between push-pull totem pole and open drain output?

A: Push-pull totem pole output (MAX690AESA, MAX703ESA+, MAX802LESA+, ADM variants) actively drives both high and low logic states. Open drain/open collector output (LTC690 series) requires external pull-up resistor for high-state operation. Circuit design modifications are necessary when substituting between these output types.

Q: Are LTC690 series parts suitable replacements for MAX690AESA?

A: LTC690 series parts maintain the 4.65V voltage threshold and 8-SOIC package but differ in output configuration (open drain versus push-pull totem pole) and reset timeout (35ms versus 140ms). LTC690CS8 variants also operate within narrower temperature range (0°C to 70°C). These differences require circuit design evaluation before substitution.

Q: What packaging options are available for equivalent parts?

A: Equivalent parts are supplied in tube packaging (MAX690AESA+, MAX703ESA+, MAX802LESA+, ADM8690ARNZ, LTC690CS8#PBF, LTC690IS8#PBF) or tape & reel packaging (ADM690AARNZ-REEL, ADM802LARNZ-REEL, LTC690CS8#TRPBF, LTC690IS8#TRPBF). Packaging selection affects procurement volume and handling requirements but does not alter electrical functionality.

Q: Which substitute part offers the highest inventory availability?

A: ADM690AARNZ-REEL provides the highest inventory level at 10,300 units. This part maintains full electrical equivalence to MAX690AESA with active product status and RoHS3 compliance, supplied in tape & reel format.

Q: Do all substitute parts meet RoHS3 compliance?

A: All listed substitute parts carry RoHS3 compliance certification. The original MAX690AESA is RoHS non-compliant. RoHS3 compliance is a standard feature across all active equivalent and parametric equivalent parts from Analog Devices.

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