SP690ACN-L Equivalent & Substitute Parts

Part Overview

The SP690ACN-L is a single-channel supervisor IC manufactured by MaxLinear, Inc., housed in an 8-SOIC surface mount package. This device functions as a power-on reset circuit with active-low reset output and a 140ms minimum reset timeout. The SP690ACN-L is classified as obsolete, making equivalent and substitute parts necessary for ongoing system support and new designs requiring similar functionality.

Key Parameters

Parameter	Value
Manufacturer Part Number	SP690ACN-L
Manufacturer	MaxLinear, Inc.
Category	Power Management (PMIC)
Package / Case	8-SOIC (0.154", 3.90mm Width)
Type	Simple Reset/Power-On Reset
Number of Voltages Monitored	1
Voltage - Threshold	4.65V
Reset	Active Low
Reset Timeout	140ms Minimum
Operating Temperature	0°C ~ 70°C (TA)
Mounting Type	Surface Mount
Moisture Sensitivity Level (MSL)	1 (Unlimited)
Product Status	Obsolete

Substitute Part Grouping Explanation

Substitution for the SP690ACN-L is determined by the following critical parameters:

Voltage threshold: 4.65V
Reset polarity: Active Low
Reset timeout: 140ms minimum
Package: 8-SOIC (0.154", 3.90mm Width)
Mounting type: Surface Mount
Number of voltages monitored: 1 channel

Substitute parts are grouped into two functional categories based on output type:

Category A: Push-Pull/Totem Pole Output (Battery Backup Circuit Type)

ADM690AARNZ
ADM690AARNZ-REEL
MAX690ACSA+
MAX690ACSA+T
MAX690AESA+
MAX690AESA+T

These parts feature push-pull totem pole output configuration and battery backup circuit functionality, meeting the 140ms reset timeout requirement.

Category B: Open Drain/Open Collector Output (Simple Reset Type)

LTC690CS8#PBF
LTC690CS8#TRPBF
LTC690IS8#PBF
LTC690IS8#TRPBF

These parts feature open drain or open collector output configuration with 35ms reset timeout. While the reset timeout differs from the original part, the output type and voltage threshold remain compatible for applications where the shorter timeout is acceptable.

Parameter Comparison

Parameter	SP690ACN-L	ADM690AARNZ	ADM690AARNZ-REEL	LTC690CS8#PBF	LTC690CS8#TRPBF	LTC690IS8#PBF	LTC690IS8#TRPBF	MAX690ACSA+	MAX690ACSA+T	MAX690AESA+	MAX690AESA+T
Manufacturer	MaxLinear, Inc.	Analog Devices Inc.	Analog Devices Inc.	Analog Devices Inc.	Analog Devices Inc.	Analog Devices Inc.	Analog Devices Inc.	Analog Devices Inc./Maxim Integrated	Analog Devices Inc./Maxim Integrated	Analog Devices Inc./Maxim Integrated	Analog Devices Inc./Maxim Integrated
Voltage - Threshold	4.65V	4.65V	4.65V	4.65V	4.65V	4.65V	4.65V	4.65V	4.65V	4.65V	4.65V
Reset	Active Low	Active Low	Active Low	Active Low	Active Low	Active Low	Active Low	Active Low	Active Low	Active Low	Active Low
Reset Timeout	140ms Minimum	140ms Minimum	140ms Minimum	35ms Minimum	35ms Minimum	35ms Minimum	35ms Minimum	140ms Minimum	140ms Minimum	140ms Minimum	140ms Minimum
Output Type	Not Specified	Push-Pull, Totem Pole	Push-Pull, Totem Pole	Open Drain or Open Collector	Open Drain or Open Collector	Open Drain or Open Collector	Open Drain or Open Collector	Push-Pull, Totem Pole	Push-Pull, Totem Pole	Push-Pull, Totem Pole	Push-Pull, Totem Pole
Operating Temperature	0°C ~ 70°C (TA)	-40°C ~ 85°C (TA)	-40°C ~ 85°C (TA)	0°C ~ 70°C (TA)	0°C ~ 70°C (TA)	-40°C ~ 85°C (TA)	-40°C ~ 85°C (TA)	0°C ~ 70°C (TA)	0°C ~ 70°C (TA)	-40°C ~ 85°C (TA)	-40°C ~ 85°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)	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)	8-SOIC (0.154", 3.90mm Width)
Mounting Type	Surface Mount	Surface Mount	Surface Mount	Surface Mount	Surface Mount	Surface Mount	Surface Mount	Surface Mount	Surface Mount	Surface Mount	Surface Mount
Product Status	Obsolete	Active	Active	Active	Active	Active	Active	Active	Active	Active	Active
RoHS Status	Not Specified	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant
Moisture Sensitivity Level (MSL)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)

Engineering Selection Recommendations

All substitute parts listed are manufactured by Analog Devices Inc. or Analog Devices Inc./Maxim Integrated and carry active product status, ensuring long-term availability and support compared to the obsolete SP690ACN-L.

For applications requiring 140ms reset timeout with push-pull totem pole output, select from Category A parts: MAX690ACSA+T, MAX690AESA+T, ADM690AARNZ-REEL, or ADM690AARNZ. The MAX690ACSA+T and MAX690AESA+T variants offer the highest inventory availability in cut tape and Digi-Reel packaging formats.

For applications where 35ms reset timeout is acceptable and open drain or open collector output is required, Category B parts (LTC690CS8#PBF, LTC690CS8#TRPBF, LTC690IS8#PBF, LTC690IS8#TRPBF) provide alternative functionality. The LTC690IS8 variants support extended operating temperature range (-40°C ~ 85°C).

All substitute parts comply with ROHS3 and maintain MSL 1 (Unlimited) moisture sensitivity rating, matching the original part's environmental specifications.

Frequently Asked Questions (FAQ)

Q: Can I directly replace SP690ACN-L with any of these substitute parts?

A: Direct replacement depends on your circuit's output requirements. If your design uses push-pull totem pole output, select from Category A parts (MAX690ACSA+T, MAX690AESA+T, ADM690AARNZ, ADM690AARNZ-REEL). If your design accommodates open drain or open collector output, Category B parts (LTC690CS8#PBF, LTC690CS8#TRPBF, LTC690IS8#PBF, LTC690IS8#TRPBF) are suitable. All parts share the same 4.65V threshold and active-low reset polarity.

Q: What is the difference between Category A and Category B substitutes?

A: Category A parts feature push-pull totem pole output with 140ms reset timeout, matching the original SP690ACN-L timing specification. Category B parts feature open drain or open collector output with 35ms reset timeout. Output type selection depends on your circuit design requirements.

Q: Are there packaging format differences among the substitute parts?

A: Yes. MAX690ACSA+T and MAX690AESA+T are supplied in cut tape and Digi-Reel format. MAX690ACSA+ and MAX690AESA+ are supplied in tube packaging. ADM690AARNZ is supplied in tube; ADM690AARNZ-REEL is supplied in cut tape and Digi-Reel format. LTC690CS8#PBF and LTC690IS8#PBF are supplied in tube; LTC690CS8#TRPBF and LTC690IS8#TRPBF are supplied in tape and reel format. Select packaging based on your assembly process requirements.

Q: Do all substitute parts support the same operating temperature range?

A: No. MAX690ACSA+, MAX690ACSA+T, LTC690CS8#PBF, and LTC690CS8#TRPBF operate from 0°C ~ 70°C, matching the original SP690ACN-L. MAX690AESA+, MAX690AESA+T, ADM690AARNZ, ADM690AARNZ-REEL, LTC690IS8#PBF, and LTC690IS8#TRPBF support extended range -40°C ~ 85°C. Select based on your application's thermal requirements.

Q: Are all substitute parts RoHS compliant?

A: Yes. All substitute parts are ROHS3 compliant and REACH unaffected, meeting current environmental and regulatory requirements.

Q: What is the reset timeout difference between Category A and Category B?

A: Category A parts provide 140ms minimum reset timeout, identical to the original SP690ACN-L. Category B parts provide 35ms minimum reset timeout. The reset timeout determines how long the reset signal remains active after power supply stabilization. Select based on your system's power-up sequencing requirements.

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