MAX944CSD+ Equivalent & Substitute Parts

Part Overview

The MAX944CSD+ is a general-purpose CMOS comparator IC manufactured by Analog Devices Inc./Maxim Integrated. This 4-element comparator features push-pull and TTL output configurations in a 14-SOIC surface mount package. The device is actively produced and ROHS3 compliant, making it suitable for applications requiring multiple independent comparator channels with standard logic-level outputs. Alternative parts may be necessary due to inventory constraints, packaging preferences, or specific application requirements for extended temperature ranges or enhanced performance characteristics.

Substiute Parts

MAX944CSD+

Analog Devices Inc./Maxim IntegratedIn Stock: 805MAX944CSD+ Datasheet

Current PartRFQ

MAX944CSD+

Analog Devices Inc./Maxim IntegratedIn Stock: 805MAX944CSD+ Datasheet

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MCP6564T-E/ST

Microchip TechnologyIn Stock: 3680MCP6564T-E/ST Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the MAX944CSD+ are identified based on the following critical parameters that determine functional compatibility:

• Number of Elements: 4 independent comparator channels
• Output Type: CMOS, Push-Pull, TTL logic-level outputs
• Package Category: 14-pin surface mount (SOIC or TSSOP variants acceptable)
• Supply Voltage Range: Minimum 2.7V operation required
• Product Status: Active manufacturing status
• Compliance: ROHS3 compliant

The MCP6564T-E/ST from Microchip Technology meets these substitution criteria. While it uses a 14-TSSOP package instead of 14-SOIC, both packages are 14-pin surface mount configurations with compatible pinout arrangements for general-purpose comparator applications. The MCP6564T-E/ST provides extended temperature range operation and enhanced input bias current specifications compared to the MAX944CSD+.

Parameter Comparison

Engineering Selection Recommendations

Both the MAX944CSD+ and MCP6564T-E/ST are active production devices with ROHS3 compliance and REACH unaffected status, meeting current regulatory requirements for electronic component procurement.

The MAX944CSD+ is the primary choice when 14-SOIC package compatibility is required and operating conditions remain within the 0°C to 70°C range.

The MCP6564T-E/ST serves as a functional substitute when extended temperature operation (-40°C to 125°C) is required, when lower quiescent current consumption is critical, or when 14-TSSOP package footprints are acceptable. The MCP6564T-E/ST also provides superior input bias current performance (1pA versus 0.15µA) and lower power consumption (130µA versus 600µA quiescent current), making it advantageous for battery-powered or thermally constrained applications.

Package transition from 14-SOIC to 14-TSSOP requires PCB layout modification and verification of pinout compatibility in the specific application circuit.

Frequently Asked Questions (FAQ)

Q: Can the MCP6564T-E/ST directly replace the MAX944CSD+ without PCB modifications?

A: Direct socket replacement is not possible due to different package types (14-SOIC versus 14-TSSOP). PCB layout redesign is required. However, both devices maintain compatible pinout arrangements for 4-element general-purpose comparator applications, allowing functional substitution with appropriate circuit board modifications.

Q: What are the key differences in electrical performance between these parts?

A: The MCP6564T-E/ST offers lower input bias current (1pA versus 0.15µA), reduced quiescent current consumption (130µA versus 600µA), and extended operating temperature range (-40°C to 125°C versus 0°C to 70°C). The MAX944CSD+ provides lower input offset voltage (2mV versus 10mV). Both devices maintain identical 80ns maximum propagation delay specifications.

Q: Are both parts suitable for 3.3V supply applications?

A: Yes. Both the MAX944CSD+ (2.7V ~ 5.5V) and MCP6564T-E/ST (1.8V ~ 5.5V) operate within 3.3V supply specifications.

Q: What compliance certifications apply to both parts?

A: Both devices are ROHS3 compliant, REACH unaffected, and classified under ECCN EAR99 with HTSUS code 8542.39.0001. Both carry Moisture Sensitivity Level 1 (Unlimited) ratings.

Q: Which part should be selected for low-power applications?

A: The MCP6564T-E/ST is preferred for power-sensitive designs, offering 78% lower quiescent current consumption (130µA versus 600µA) compared to the MAX944CSD+.