SP690AEP-L Equivalent & Substitute Parts

Part Overview

The SP690AEP-L is a supervisor integrated circuit manufactured by MaxLinear, Inc., designed for single-channel power management and reset control applications. This 8-DIP package component monitors voltage thresholds and provides active-low reset output with a 140ms minimum timeout. The part is currently obsolete, making equivalent and substitute components necessary for ongoing system support, maintenance, and new design implementations requiring compatible supervisor functionality.

Key Parameters

Parameter	SP690AEP-L
Manufacturer	MaxLinear, Inc.
Category	Power Management (PMIC)
Package / Case	8-DIP (0.300", 7.62mm)
Mounting Type	Through Hole
Number of Voltages Monitored	1
Voltage - Threshold	4.65V
Reset	Active Low
Reset Timeout	140ms Minimum
Operating Temperature	-40°C ~ 85°C (TA)
Product Status	Obsolete
Moisture Sensitivity Level (MSL)	1 (Unlimited)

Substitute Part Grouping Explanation

Substitution of the SP690AEP-L is determined by the following critical parameters: 8-DIP through-hole package compatibility, single-channel voltage monitoring at 4.65V threshold, active-low reset output, and operating temperature range of -40°C to 85°C. The reset timeout of 140ms minimum is a functional requirement that must be matched or exceeded.

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

Push-Pull/Totem Pole Output Group: ADM690AANZ, ADM690ANZ, ADM694ANZ, MAX690ACPA+, MAX690AEPA+, MAX690CPA+, MAX690EPA+, and MAX694CPA+ provide push-pull output configurations with battery backup circuit functionality.

Open Drain/Open Collector Output Group: LTC690CN8#PBF and LTC690IN8#PBF provide open drain output configurations with simple reset/power-on reset functionality.

Parameter Comparison

Part Number	Manufacturer	Package	Voltage Threshold	Reset Timeout	Operating Temp	Output Type	Product Status
SP690AEP-L	MaxLinear, Inc.	8-DIP	4.65V	140ms Min	-40°C ~ 85°C	Simple Reset	Obsolete
ADM690AANZ	Analog Devices Inc.	8-DIP	4.65V	140ms Min	-40°C ~ 85°C	Push-Pull, Totem Pole	Active
ADM690ANZ	Analog Devices Inc.	8-DIP	4.65V	35ms Min	-40°C ~ 85°C	Push-Pull, Totem Pole	Active
ADM694ANZ	Analog Devices Inc.	8-DIP	4.65V	140ms Min	-40°C ~ 85°C	Push-Pull, Totem Pole	Active
LTC690CN8#PBF	Analog Devices Inc.	8-DIP	4.65V	35ms Min	0°C ~ 70°C	Open Drain	Active
LTC690IN8#PBF	Analog Devices Inc.	8-DIP	4.65V	35ms Min	-40°C ~ 85°C	Open Drain	Active
MAX690ACPA+	Analog Devices Inc./Maxim Integrated	8-DIP	4.65V	140ms Min	0°C ~ 70°C	Push-Pull, Totem Pole	Active
MAX690AEPA+	Analog Devices Inc./Maxim Integrated	8-DIP	4.65V	140ms Min	-40°C ~ 85°C	Push-Pull, Totem Pole	Active
MAX690CPA+	Analog Devices Inc./Maxim Integrated	8-DIP	4.65V	35ms Min	0°C ~ 70°C	Push-Pull, Totem Pole	Active
MAX690EPA+	Analog Devices Inc./Maxim Integrated	8-DIP	4.65V	35ms Min	-40°C ~ 85°C	Push-Pull, Totem Pole	Active
MAX694CPA+	Analog Devices Inc./Maxim Integrated	8-DIP	4.65V	140ms Min	0°C ~ 70°C	Push-Pull, Totem Pole	Active

Engineering Selection Recommendations

For applications requiring full compatibility with the SP690AEP-L operating temperature range of -40°C to 85°C and 140ms reset timeout, select from: ADM690AANZ, ADM694ANZ, MAX690AEPA+, or LTC690IN8#PBF. All substitute options are active products with ROHS3 compliance and REACH unaffected status.

ADM690AANZ and ADM694ANZ are recommended as primary substitutes, offering push-pull output with battery backup circuit functionality and full temperature range support. MAX690AEPA+ provides equivalent functionality with Maxim Integrated manufacturing heritage. LTC690IN8#PBF offers open drain output for applications requiring that output configuration.

For applications where reset timeout can be reduced to 35ms minimum, additional options include ADM690ANZ, MAX690EPA+, and MAX690CPA+, expanding component availability and sourcing flexibility.

Temperature-constrained applications operating within 0°C to 70°C may utilize MAX690ACPA+ or MAX694CPA+, which maintain 140ms reset timeout specifications while reducing thermal operating range requirements.

Frequently Asked Questions (FAQ)

Q: Can LTC690CN8#PBF substitute for SP690AEP-L in all applications?

A: LTC690CN8#PBF is compatible for package, voltage threshold, and reset polarity. However, it operates within 0°C to 70°C temperature range versus SP690AEP-L's -40°C to 85°C range, and provides 35ms reset timeout versus 140ms. Use only in applications within this narrower temperature window and where shorter reset timeout is acceptable.

Q: What is the difference between push-pull and open drain output types?

A: Push-pull output (ADM690AANZ, MAX690AEPA+, etc.) actively drives the reset line high and low. Open drain output (LTC690CN8#PBF, LTC690IN8#PBF) requires external pull-up resistor and can only pull the line low. Circuit design determines which output type is required.

Q: Are all substitute parts RoHS compliant?

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

Q: Which substitute offers the closest electrical match to SP690AEP-L?

A: ADM690AANZ and ADM694ANZ provide identical voltage threshold (4.65V), reset timeout (140ms minimum), operating temperature range (-40°C to 85°C), and 8-DIP package. Both are active products from Analog Devices Inc.

Q: Can I use parts with 35ms reset timeout instead of 140ms?

A: Only if your application circuit design accommodates the shorter reset timeout. Verify timing requirements in system documentation before substitution.

Q: Are there inventory considerations for these substitutes?

A: All listed substitute parts maintain active inventory status. ADM690AANZ (1432 pcs), ADM694ANZ (1210 pcs), LTC690IN8#PBF (3318 pcs), MAX690AEPA+ (4100 pcs), and MAX690EPA+ (3271 pcs) represent primary availability options.

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