MAX944CSD-T Equivalent & Substitute Parts

Part Overview

The MAX944CSD-T is a general-purpose CMOS comparator with four independent elements, designed for signal comparison applications requiring push-pull and TTL-compatible outputs. The device operates across a 2.7V to 5.5V supply range with a maximum propagation delay of 80ns and is packaged in a 14-SOIC surface-mount configuration.

The MAX944CSD-T is classified as obsolete. Identifying equivalent and substitute parts is necessary to ensure design continuity, maintain supply chain reliability, and support ongoing production requirements for applications currently utilizing this comparator.

Substiute Parts

MAX944CSD-T

Analog Devices Inc./Maxim IntegratedIn Stock: 2342MAX944CSD-T Datasheet

Current PartRFQ

MAX944CSD+T

Analog Devices Inc./Maxim IntegratedIn Stock: 2632MAX944CSD+T Datasheet

Parametric EquivalentRFQ

MCP6564-E/SL

Microchip TechnologyIn Stock: 2199MCP6564-E/SL Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the MAX944CSD-T are identified based on strict electrical and mechanical parameter alignment within the general-purpose comparator category. The substitution logic is structured as follows:

Parametric Equivalents share identical or functionally equivalent electrical specifications across all critical parameters: four independent comparator elements, CMOS push-pull TTL output configuration, 2.7V to 5.5V supply voltage range, 2mV maximum input offset voltage, 0.15µA maximum input bias current, 600µA maximum quiescent current, 81.94dB CMRR and PSRR, 80ns maximum propagation delay, and 14-SOIC surface-mount packaging.

Manufacturer-Recommended Substitutes maintain functional compatibility through equivalent element count, output type, and package form factor, while permitting variations in secondary parameters such as supply voltage range extension, input offset voltage tolerance, input bias current characteristics, quiescent current reduction, and operating temperature range expansion. These variations remain within acceptable engineering tolerances for general-purpose comparator applications.

Parameter Comparison

Engineering Selection Recommendations

MAX944CSD+T is the primary substitute for the MAX944CSD-T. Both parts are manufactured by Analog Devices Inc./Maxim Integrated and share identical electrical specifications and 14-SOIC packaging. The MAX944CSD+T maintains active product status, ensuring ongoing availability and supply chain support. This part is recommended as the direct replacement for obsolete MAX944CSD-T applications.

MCP6564-E/SL is a manufacturer-recommended alternative from Microchip Technology. While maintaining the same four-element comparator configuration, 14-SOIC package, and 80ns propagation delay, the MCP6564-E/SL introduces design variations including extended supply voltage range (1.8V minimum), reduced quiescent current (130µA versus 600µA), and expanded operating temperature range (-40°C to 125°C). The MCP6564-E/SL is suitable for applications where lower power consumption or extended temperature operation is beneficial. Selection of this part requires verification that the 10mV input offset voltage tolerance and 5mV hysteresis specification are compatible with the target application's signal comparison requirements.

Both substitute parts carry ROHS3 compliance and are classified as active products with confirmed inventory availability.

Frequently Asked Questions (FAQ)

Q: Can MAX944CSD+T be used as a direct replacement for MAX944CSD-T?

A: Yes. The MAX944CSD+T is a parametric equivalent with identical electrical specifications, output configuration, supply voltage range, and 14-SOIC packaging. The primary difference is product status: MAX944CSD+T is active, while MAX944CSD-T is obsolete. No design modifications are required.

Q: What are the key differences between MAX944CSD+T and MCP6564-E/SL?

A: Both parts share the same four-element comparator architecture, push-pull TTL output, 80ns propagation delay, and 14-SOIC package. The MCP6564-E/SL offers lower quiescent current (130µA versus 600µA), extended supply voltage range (1.8V minimum), expanded operating temperature range (-40°C to 125°C), and includes 5mV hysteresis. The MCP6564-E/SL has higher input offset voltage (10mV versus 2mV) and lower CMRR/PSRR values (66dB/70dB versus 81.94dB).

Q: Is the MCP6564-E/SL suitable for all MAX944CSD-T applications?

A: The MCP6564-E/SL is functionally compatible for general-purpose comparator applications. However, applications requiring the 2mV input offset voltage specification or 81.94dB CMRR/PSRR performance should be evaluated against the MCP6564-E/SL's 10mV offset and 66dB/70dB specifications. The 5mV hysteresis in the MCP6564-E/SL may affect applications sensitive to switching threshold precision.

Q: Are all three parts compatible with the same PCB layout?

A: Yes. All three parts use identical 14-SOIC (0.154", 3.90mm Width) surface-mount packaging. PCB footprints and land patterns are interchangeable without modification.

Q: What is the packaging difference between MAX944CSD-T and MAX944CSD+T?

A: MAX944CSD-T is supplied in standard packaging, while MAX944CSD+T is supplied in Cut Tape (CT) and Digi-Reel® formats. Both use the same 14-SOIC component package. The difference is in tape and reel configuration for automated assembly processes.

Q: Are all substitute parts RoHS compliant?

A: Yes. MAX944CSD+T and MCP6564-E/SL are both ROHS3 compliant, matching the compliance status of the original MAX944CSD-T.