SP691ACP-L Equivalent & Substitute Parts

Part Overview

The SP691ACP-L is a Power Management Integrated Circuit (PMIC) supervisor manufactured by MaxLinear, Inc., designed for single-channel voltage monitoring and reset signal generation. This component operates as a Simple Reset/Power-On Reset supervisor with open drain and push-pull output capabilities. The part is classified as obsolete, making equivalent and substitute parts necessary for new designs and ongoing system support. Substitute parts must maintain functional equivalence across voltage threshold, output type, reset timeout, and package compatibility parameters.

Substiute Parts

SP691ACP-L

MaxLinear, Inc.In Stock: 1165SP691ACP-L Datasheet

Current PartRFQ

SP691ACN-L

MaxLinear, Inc.In Stock: 2240SP691ACN-L Datasheet

DirectRFQ

ADM691AANZ

Analog Devices Inc.In Stock: 955ADM691AANZ Datasheet

MFR RecommendedRFQ

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 SP691ACP-L are selected based on strict parameter matching across the following critical criteria:

Voltage Threshold Matching: All substitute parts must maintain the 4.65V threshold specification to ensure equivalent voltage monitoring functionality.

Output Configuration: Substitute parts must support the required output types (Open Drain, Push-Pull, or Open Drain/Open Collector combinations) to maintain circuit compatibility.

Reset Timeout: Reset timeout specifications must meet or exceed the 140ms minimum requirement for proper power-on reset sequencing.

Package Type: Through-hole 16-DIP packaging is required for direct board-level compatibility with existing designs.

Single Channel Monitoring: All substitutes must maintain single-channel voltage monitoring capability.

Substitutes are grouped into two categories: direct MaxLinear equivalents with identical packaging, and cross-manufacturer alternatives from Analog Devices Inc. and Linear Technology that maintain functional equivalence while offering active product status and enhanced temperature operating ranges.

Parameter Comparison

Engineering Selection Recommendations

Direct Package Equivalent (Recommended for Direct Replacement): ADM691AANZ, LTC691CN#PBF, LTC691IN#PBF, MAX691ACPE+, and MAX691AEPE+ all maintain the 16-DIP through-hole package required for direct board-level substitution of the SP691ACP-L. These parts are active products with ROHS3 compliance and established supply availability.

Extended Temperature Range Options: ADM691AANZ, LTC691IN#PBF, and MAX691AEPE+ provide extended operating temperature ranges (-40°C ~ 85°C) compared to the SP691ACP-L specification (0°C ~ 70°C), offering enhanced reliability for applications requiring broader thermal performance.

Reset Timeout Consideration: LTC691CN#PBF and LTC691IN#PBF specify a 35ms minimum reset timeout, which is shorter than the SP691ACP-L 140ms minimum. These parts are suitable only for applications where the shorter timeout does not compromise system reset sequencing requirements.

Output Configuration Matching: MAX691ACPE+ and MAX691AEPE+ feature push-pull output configuration, while ADM691AANZ maintains open drain and push-pull outputs matching the original SP691ACP-L specification. LTC691CN#PBF and LTC691IN#PBF provide open drain or open collector outputs. Circuit design must accommodate the selected output type.

Surface Mount Alternative: SP691ACN-L provides an active MaxLinear equivalent in 16-SOIC surface-mount packaging for new designs not constrained to through-hole assembly. This part maintains identical electrical specifications to the SP691ACP-L with the exception of mounting technology.

Frequently Asked Questions (FAQ)

Q: Can SP691ACN-L replace SP691ACP-L directly on existing PCBs? A: No. SP691ACN-L uses 16-SOIC surface-mount packaging while SP691ACP-L requires 16-DIP through-hole packaging. SP691ACN-L is suitable only for new designs with surface-mount assembly capability. For direct PCB replacement, use ADM691AANZ, LTC691CN#PBF, LTC691IN#PBF, MAX691ACPE+, or MAX691AEPE+.

Q: What is the functional difference between the LTC691 series and MAX691 series substitutes? A: Both maintain the 4.65V threshold and active high/active low reset capability. The primary difference is reset timeout specification: LTC691 series specifies 35ms minimum, while MAX691 series specifies 140ms minimum matching the original SP691ACP-L. Output configuration also differs: LTC691 provides open drain or open collector, while MAX691 provides push-pull outputs.

Q: Are all substitute parts RoHS compliant? A: ADM691AANZ, LTC691CN#PBF, MAX691ACPE+, and MAX691AEPE+ are ROHS3 compliant. LTC691IN#PBF compliance status is not specified in available documentation. SP691ACN-L is ROHS3 compliant.

Q: Which substitute offers the widest operating temperature range? A: ADM691AANZ, LTC691IN#PBF, and MAX691AEPE+ all support -40°C ~ 85°C operating temperature, compared to the SP691ACP-L specification of 0°C ~ 70°C.

Q: Can I use a substitute with a different reset timeout specification? A: Reset timeout selection depends on system power-on reset sequencing requirements. LTC691CN#PBF and LTC691IN#PBF with 35ms minimum timeout are suitable only if your application does not require the 140ms minimum timing of the original part. Verify timing requirements with system design specifications before substitution.

Q: What inventory levels are available for each substitute? A: SP691ACN-L: 2200 pcs; ADM691AANZ: 944 pcs; LTC691CN#PBF: 2100 pcs; LTC691IN#PBF: 20200 pcs; MAX691ACPE+: 8960 pcs; MAX691AEPE+: 8250 pcs.