MAX705CSA-T Equivalent & Substitute Parts

Part Overview

The MAX705CSA-T is a single-channel power supply supervisor IC manufactured by Analog Devices Inc./Maxim Integrated, designed for power-on reset and simple reset applications. This component operates as a push-pull, totem pole output supervisor with a 4.65V threshold voltage and 140ms minimum reset timeout. The part is classified as obsolete, making equivalent and substitute parts necessary for ongoing system support and new designs. Substitute parts must maintain functional equivalence across critical electrical parameters including voltage threshold, reset polarity, output configuration, and package compatibility.

Substiute Parts

MAX705CSA-T

Analog Devices Inc./Maxim IntegratedIn Stock: 7182MAX705CSA-T Datasheet

Current PartRFQ

MAX705CSA+T

Analog Devices Inc./Maxim IntegratedIn Stock: 29264MAX705CSA+T Datasheet

DirectRFQ

MAX709LCSA+T

Analog Devices Inc./Maxim IntegratedIn Stock: 2084MAX709LCSA+T Datasheet

Parametric EquivalentRFQ

MAX7705CSA+T

Analog Devices Inc./Maxim IntegratedIn Stock: 2015MAX7705CSA+T Datasheet

Parametric EquivalentRFQ

ADM705ARZ

Analog Devices Inc.In Stock: 21145ADM705ARZ Datasheet

MFR RecommendedRFQ

ADM705ARZ-REEL

Analog Devices Inc.In Stock: 15407ADM705ARZ-REEL Datasheet

MFR RecommendedRFQ

ADM705ARZ-REEL7

Analog Devices Inc.In Stock: 28995ADM705ARZ-REEL7 Datasheet

MFR RecommendedRFQ

MIC705MY

Microchip TechnologyIn Stock: 6410MIC705MY Datasheet

MFR RecommendedRFQ

MIC705MY-TR

Microchip TechnologyIn Stock: 3691MIC705MY-TR Datasheet

MFR RecommendedRFQ

SP705CN-L/TR

MaxLinear, Inc.In Stock: 1425SP705CN-L/TR Datasheet

MFR RecommendedRFQ

SP705EN-L/TR

MaxLinear, Inc.In Stock: 34075SP705EN-L/TR Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the MAX705CSA-T is determined by strict equivalence across the following critical parameters:

Mandatory Equivalence Parameters:

• Voltage threshold: 4.65V
• Number of monitored voltages: 1 channel
• Reset polarity: Active Low
• Package type: 8-SOIC (0.154", 3.90mm Width)
• Mounting type: Surface Mount
• Reset timeout: 140ms minimum or greater
• Output configuration: Push-Pull, Totem Pole (where specified)

Compliance Parameters:

• RoHS3 compliance required
• MSL rating: 1 (Unlimited)
• ECCN: EAR99
• HTSUS: 8542.39.0001

Substitute parts are grouped into three categories: direct manufacturer equivalents (same base product number with different packaging), parametric equivalents (different base product numbers with identical electrical specifications), and manufacturer-recommended alternatives (functionally equivalent parts from different manufacturers with extended operating temperature ranges or modified reset timeout specifications).

Parameter Comparison

Engineering Selection Recommendations

Direct Replacement (Highest Compatibility): MAX705CSA+T is the active production equivalent of the obsolete MAX705CSA-T. Both parts share identical electrical specifications, operating temperature range, and output configuration. This part is recommended as the primary replacement for direct substitution in existing designs.

Parametric Equivalents (Same Electrical Specifications): MAX709LCSA+T and MAX7705CSA+T maintain identical voltage threshold, reset timeout, operating temperature, and output configuration as the original part. These parts are functionally interchangeable and suitable for new designs or redesigns where the specific base product number is not constrained.

Extended Temperature Range Alternatives: ADM705ARZ, ADM705ARZ-REEL, and ADM705ARZ-REEL7 provide identical voltage threshold and output configuration with extended operating temperature range (-40°C to 85°C) and slightly longer reset timeout (160ms minimum). These parts are suitable for applications requiring wider temperature operation. The three variants differ only in packaging format (tube versus cut tape and reel configurations).

Cross-Manufacturer Alternatives: MIC705MY and MIC705MY-TR (Microchip Technology) and SP705CN-L/TR and SP705EN-L/TR (MaxLinear, Inc.) meet the core electrical requirements of 4.65V threshold, active low reset, and 8-SOIC package. Output configuration is not specified for these alternatives. SP705EN-L/TR offers extended temperature range (-40°C to 85°C) and ROHS3 compliance. Selection of cross-manufacturer parts requires verification of output stage compatibility with the target application circuit.

Compliance Verification: All recommended substitutes maintain ROHS3 compliance and MSL rating of 1 (Unlimited). Parts sourced should be verified for REACH compliance status and ECCN classification where applicable to the end application.

Frequently Asked Questions (FAQ)

Q: Can MAX705CSA+T be used as a direct replacement for MAX705CSA-T? A: Yes. MAX705CSA+T is the active production equivalent with identical electrical specifications, operating temperature range (0°C to 70°C), voltage threshold (4.65V), reset timeout (140ms minimum), and 8-SOIC package. The only difference is product status (active versus obsolete).

Q: What is the difference between MAX705CSA+T and ADM705ARZ? A: Both parts share the same 4.65V voltage threshold, active low reset polarity, and 8-SOIC package. ADM705ARZ provides extended operating temperature range (-40°C to 85°C versus 0°C to 70°C) and slightly longer reset timeout (160ms minimum versus 140ms minimum). ADM705ARZ is suitable for applications requiring wider temperature operation.

Q: Are the three ADM705ARZ variants (ADM705ARZ, ADM705ARZ-REEL, ADM705ARZ-REEL7) electrically identical? A: Yes. All three variants are electrically identical. The differences are packaging formats: ADM705ARZ is supplied in tube packaging, while ADM705ARZ-REEL and ADM705ARZ-REEL7 are supplied in cut tape and reel formats. Selection depends on assembly process requirements and quantity needs.

Q: Can Microchip MIC705MY or MaxLinear SP705 series parts replace the MAX705CSA-T? A: These parts meet the core requirements of 4.65V threshold, active low reset, and 8-SOIC package. However, output configuration is not specified for these alternatives. Verification of output stage compatibility with the target application circuit is required before substitution.

Q: What is the significance of the operating temperature range difference? A: The original MAX705CSA-T operates from 0°C to 70°C. Extended temperature range alternatives (ADM705ARZ series, MIC705MY series, SP705EN-L/TR) operate from -40°C to 85°C. Selection depends on the application's thermal environment. Extended range parts are necessary for industrial or automotive applications with wider temperature requirements.

Q: Are all substitute parts RoHS compliant? A: All recommended substitutes are RoHS compliant. Most are ROHS3 compliant. SP705CN-L/TR is marked as RoHS Compliant without specific ROHS3 designation. Verify compliance documentation for the specific application requirement.

Q: What does "Push-Pull, Totem Pole" output mean? A: This output configuration provides both high-side and low-side drive capability, allowing the supervisor to actively pull the reset signal high or low. This is distinct from open-drain or open-collector outputs. Verify that substitute parts with unspecified output configuration are compatible with the application circuit before selection.

Q: Can I use parts with 160ms reset timeout instead of 140ms? A: Yes. A longer reset timeout (160ms) is a superset of the 140ms requirement and will not cause functional issues. The reset signal will remain asserted for a longer duration, which is acceptable in most applications. Verify that the application does not have specific timing constraints that would be affected by the extended timeout.