SP691AEP-L Equivalent & Substitute Parts

Part Overview

The SP691AEP-L is a single-channel power management supervisor IC manufactured by MaxLinear, Inc., designed for reset and power-on reset applications. This component features open drain and push-pull output configurations with a 4.65V voltage threshold and 140ms minimum reset timeout. The part is currently classified as obsolete, making equivalent and substitute parts necessary for ongoing system support and new designs requiring similar functionality.

Substiute Parts

SP691AEP-L

MaxLinear, Inc.In Stock: 1028SP691AEP-L Datasheet

Current PartRFQ

LTC691CN#PBF

Analog Devices Inc.In Stock: 2126LTC691CN#PBF Datasheet

MFR RecommendedRFQ

LTC691IN#PBF

Linear TechnologyIn Stock: 20289LTC691IN#PBF Datasheet

MFR RecommendedRFQ

MAX691ACPE+

Analog Devices Inc./Maxim IntegratedIn Stock: 9025MAX691ACPE+ Datasheet

MFR RecommendedRFQ

MAX691AEPE+

Analog Devices Inc./Maxim IntegratedIn Stock: 8263MAX691AEPE+ Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the SP691AEP-L are selected based on strict electrical and mechanical compatibility criteria. The primary substitution parameters are:

• Single-channel voltage monitoring architecture
• 4.65V voltage threshold matching
• Active High/Active Low reset logic capability
• 16-DIP through-hole package format
• Operating temperature range compatibility
• Output stage configuration (open drain or push-pull)
• Reset timeout specifications

The substitute parts are grouped into two functional categories based on output configuration and reset timeout characteristics:

Group 1: Open Drain Output with Extended Temperature Range

• LTC691IN#PBF (Linear Technology): Maintains -40°C ~ 85°C operating range with 35ms reset timeout
• LTC691CN#PBF (Analog Devices Inc.): Commercial temperature range (0°C ~ 70°C) with 35ms reset timeout

Group 2: Push-Pull Output with Battery Backup Capability

• MAX691AEPE+ (Analog Devices Inc./Maxim Integrated): Extended temperature range (-40°C ~ 85°C) with 140ms reset timeout
• MAX691ACPE+ (Analog Devices Inc./Maxim Integrated): Commercial temperature range (0°C ~ 70°C) with 140ms reset timeout

Parameter Comparison

Engineering Selection Recommendations

For Extended Temperature Range Applications (-40°C ~ 85°C):

Select MAX691AEPE+ when the original SP691AEP-L push-pull output configuration and 140ms reset timeout are required. This part maintains full temperature range compatibility and is actively manufactured by Analog Devices Inc./Maxim Integrated with ROHS3 compliance and REACH unaffected status.

Alternatively, select LTC691IN#PBF when open drain output is acceptable and the 35ms reset timeout meets system requirements. This part is actively produced by Linear Technology with extended temperature range support.

For Commercial Temperature Range Applications (0°C ~ 70°C):

Select MAX691ACPE+ when push-pull output and 140ms reset timeout specifications match system design requirements. This part is actively manufactured with ROHS3 compliance.

Select LTC691CN#PBF when open drain output is acceptable and the 35ms reset timeout is compatible with system timing. This part is actively produced by Analog Devices Inc. with ROHS3 compliance.

All substitute parts maintain the 4.65V voltage threshold, single-channel monitoring architecture, and 16-DIP through-hole package format of the original SP691AEP-L.

Frequently Asked Questions (FAQ)

Q: Can LTC691IN#PBF or LTC691CN#PBF directly replace SP691AEP-L?

A: These parts share the same 4.65V threshold, single-channel architecture, and 16-DIP package. However, they feature open drain or open collector output instead of push-pull, and specify 35ms reset timeout instead of 140ms. Substitution is valid only if your circuit design accommodates open drain output and the shorter reset timeout meets system timing requirements.

Q: What is the difference between MAX691AEPE+ and MAX691ACPE+?

A: Both parts provide identical push-pull output and 140ms reset timeout specifications. The primary difference is operating temperature range: MAX691AEPE+ operates from -40°C ~ 85°C, while MAX691ACPE+ operates from 0°C ~ 70°C. Select based on your application's temperature requirements.

Q: Are all substitute parts RoHS compliant?

A: LTC691CN#PBF, MAX691AEPE+, and MAX691ACPE+ are ROHS3 compliant. LTC691IN#PBF does not specify RoHS status. Verify compliance requirements for your application before selection.

Q: Can I use a substitute part with a different reset timeout?

A: Reset timeout is a critical timing parameter. LTC691 series parts specify 35ms minimum reset timeout, while MAX691 and SP691 series specify 140ms minimum. Substitution with different reset timeout is valid only if your system design accommodates the alternative timing specification.

Q: What is the inventory status of these substitute parts?

A: LTC691IN#PBF has the highest inventory availability at 20,200 pieces. MAX691AEPE+ has 8,250 pieces, MAX691ACPE+ has 8,960 pieces, and LTC691CN#PBF has 2,100 pieces in stock. All parts are classified as new original stock.