MAX971CSA-T Equivalent & Substitute Parts

Part Overview

The MAX971CSA-T is a linear comparator with integrated voltage reference and open-drain output, manufactured by Analog Devices Inc./Maxim Integrated. This device operates across a supply voltage range of 2.5V to 11V (single supply) or ±1.25V to 5.5V (dual supply), with a maximum input offset voltage of 10mV at 5V and 50mV hysteresis. The part is currently classified as obsolete, making identification of equivalent and substitute components essential for ongoing design support and production continuity. Substitute parts must maintain functional equivalence in comparator topology, voltage reference integration, open-drain output configuration, and core electrical performance within the specified operating parameters.

Substiute Parts

MAX971CSA-T

Analog Devices Inc./Maxim IntegratedIn Stock: 851MAX971CSA-T Datasheet

Current PartRFQ

MAX971CSA+T

Analog Devices Inc./Maxim IntegratedIn Stock: 2162MAX971CSA+T Datasheet

DirectRFQ

MIC833YM5-TR

Microchip TechnologyIn Stock: 4582MIC833YM5-TR Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the MAX971CSA-T is determined by the following critical parameters:

Functional Requirements:

• Comparator with integrated voltage reference
• Open-drain output configuration
• Single comparator element

Electrical Compatibility:

• Supply voltage range must encompass or be compatible with 2.5V ~ 11V (single) or ±1.25V ~ 5.5V (dual)
• Input offset voltage performance at rated supply voltage
• Quiescent current specifications
• CMRR and PSRR performance levels
• Hysteresis characteristics

Physical & Environmental Compatibility:

• Surface mount package (8-SOIC or equivalent pinout-compatible package)
• Operating temperature range 0°C ~ 70°C or broader
• RoHS3 compliance
• MSL rating of 1 or better

Identified Substitutes:

1. MAX971CSA+T (Analog Devices Inc./Maxim Integrated) – Direct packaging variant with identical electrical specifications and active product status
2. MIC833YM5-TR (Microchip Technology) – Functionally equivalent comparator with voltage reference and open-drain output, with extended operating temperature range and different package form factor

Parameter Comparison

Engineering Selection Recommendations

MAX971CSA+T Selection Criteria: This part is the direct substitute for MAX971CSA-T, differing only in packaging format (Tape & Reel versus bulk). Both parts maintain identical electrical specifications, operating temperature range, and compliance certifications. MAX971CSA+T carries active product status, ensuring continued availability and manufacturing support. This substitute is recommended for designs requiring exact electrical and thermal performance matching without PCB layout modifications.

MIC833YM5-TR Selection Criteria: The MIC833YM5-TR from Microchip Technology provides functional equivalence as a comparator with integrated voltage reference and open-drain output. This part extends the operating temperature range to -40°C ~ 85°C, supporting applications requiring broader thermal operation. However, the MIC833YM5-TR uses a different package form factor (SOT-23-5 versus 8-SOIC), requiring PCB layout redesign. The supply voltage range is narrower (1.5V ~ 5.5V), limiting applicability to designs operating above 2.5V single supply or ±1.25V dual supply. This substitute is suitable for new designs where package footprint optimization and extended temperature range are prioritized over pin-for-pin compatibility.

Product Status Consideration: Both substitute parts carry active product status, ensuring long-term availability and manufacturing continuity. The MAX971CSA-T obsolete status necessitates migration to one of these active alternatives for production designs.

Frequently Asked Questions (FAQ)

Q: Can MAX971CSA+T be used as a direct replacement for MAX971CSA-T? A: Yes. MAX971CSA+T is electrically and functionally identical to MAX971CSA-T. The difference is packaging format: MAX971CSA+T is supplied in Tape & Reel format, while MAX971CSA-T is supplied in bulk packaging. No circuit modifications are required.

Q: What are the key differences between MAX971CSA+T and MIC833YM5-TR? A: Both are comparators with integrated voltage reference and open-drain output. MAX971CSA+T maintains the 8-SOIC package and identical electrical specifications. MIC833YM5-TR uses a smaller SOT-23-5 package, extends operating temperature to -40°C ~ 85°C, but narrows the supply voltage range to 1.5V ~ 5.5V and requires PCB redesign due to different pinout.

Q: Is the MIC833YM5-TR suitable for designs currently using MAX971CSA-T? A: Functional substitution is possible if the design operates within the MIC833YM5-TR supply voltage range (1.5V ~ 5.5V) and temperature range (-40°C ~ 85°C). PCB layout modification is mandatory due to package differences. Electrical parameter specifications for the MIC833YM5-TR differ in some areas; detailed datasheet comparison is necessary for critical applications.

Q: Are all substitute parts RoHS3 compliant? A: Yes. MAX971CSA+T and MIC833YM5-TR are both ROHS3 compliant with MSL rating of 1 (Unlimited), matching the compliance profile of MAX971CSA-T.

Q: Which substitute should be selected for new production designs? A: MAX971CSA+T is recommended for designs requiring exact electrical performance and package compatibility. MIC833YM5-TR is suitable for new designs where extended temperature range and smaller package footprint justify PCB redesign and supply voltage range verification.