MAX942CSA Equivalent & Substitute Parts

Part Overview

The MAX942CSA is a dual general-purpose CMOS comparator with push-pull and TTL output capabilities, manufactured by Analog Devices Inc./Maxim Integrated. This 8-SOIC surface-mount device operates across a 2.7V to 5.5V supply range and is designed for general-purpose comparison applications requiring low input offset voltage and moderate propagation delay.

The MAX942CSA is classified as obsolete, making equivalent and substitute parts necessary for new designs and ongoing production support. Active alternatives with identical or enhanced electrical characteristics are available to ensure design continuity and long-term component availability.

Substiute Parts

MAX942CSA

Analog Devices Inc./Maxim IntegratedIn Stock: 1881MAX942CSA Datasheet

Current PartRFQ

MAX942CSA+

Analog Devices Inc./Maxim IntegratedIn Stock: 4093MAX942CSA+ Datasheet

DirectRFQ

MCP6562-E/MS

Microchip TechnologyIn Stock: 6002MCP6562-E/MS Datasheet

MFR RecommendedRFQ

MCP6562T-E/SN

Microchip TechnologyIn Stock: 3662MCP6562T-E/SN Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution for the MAX942CSA is determined by the following critical parameters:

• Dual comparator configuration (2 elements per package)
• Output type compatibility (CMOS, Push-Pull, TTL)
• Supply voltage range (minimum 2.7V operation required)
• Propagation delay (80ns maximum)
• Package form factor (8-SOIC or mechanically equivalent)
• Surface-mount technology (SOIC or MSOP packages)

Substitute parts are grouped into two categories:

1. Direct equivalent (MAX942CSA+): Identical electrical specifications and 8-SOIC package, with improved RoHS compliance and active product status.

2. Functional equivalents (MCP6562T-E/SN, MCP6562-E/MS): Enhanced specifications including rail-to-rail output capability, lower input bias current, and extended operating temperature range, with package variations (8-SOIC and 8-MSOP).

Parameter Comparison

Engineering Selection Recommendations

MAX942CSA+ (Direct Equivalent)

The MAX942CSA+ is the primary substitute for the MAX942CSA. It maintains identical electrical specifications and 8-SOIC package compatibility, ensuring drop-in replacement capability. The MAX942CSA+ is classified as active product status with ROHS3 compliance, addressing the obsolescence and regulatory concerns of the original MAX942CSA. This part is recommended for designs requiring exact electrical and mechanical compatibility with minimal qualification effort.

MCP6562T-E/SN (Functional Equivalent, 8-SOIC Package)

The MCP6562T-E/SN is a Microchip Technology alternative offering enhanced specifications within the same 8-SOIC package form factor. Key advantages include rail-to-rail output capability, significantly lower input bias current (1pA vs. 0.15µA), reduced quiescent current (130µA vs. 600µA), and extended operating temperature range (-40°C to 125°C). The propagation delay remains at 80ns maximum, matching the original specification. This part is suitable for applications requiring improved power efficiency and wider temperature operation while maintaining package compatibility.

MCP6562-E/MS (Functional Equivalent, 8-MSOP Package)

The MCP6562-E/MS provides identical electrical specifications to the MCP6562T-E/SN but in a smaller 8-MSOP package (0.118" width vs. 0.154" for SOIC). This option is applicable for space-constrained designs where the reduced package footprint is beneficial. PCB layout modifications are required due to the different package geometry.

All substitute parts are ROHS3 compliant and carry active product status, ensuring long-term availability and regulatory alignment.

Frequently Asked Questions (FAQ)

Q: Can MAX942CSA+ be used as a direct replacement for MAX942CSA?

A: Yes. The MAX942CSA+ maintains identical electrical specifications, supply voltage range (2.7V ~ 5.5V), propagation delay (80ns), and 8-SOIC package dimensions. It is a direct drop-in replacement with improved RoHS compliance and active product status.

Q: What are the key differences between MAX942CSA and MCP6562T-E/SN?

A: Both devices share identical propagation delay (80ns) and dual comparator configuration. The MCP6562T-E/SN offers enhanced specifications: rail-to-rail output capability, lower input bias current (1pA vs. 0.15µA), reduced quiescent current (130µA vs. 600µA), and extended operating temperature range (-40°C to 125°C vs. 0°C to 70°C). Input offset voltage is higher (10mV vs. 2mV). Both use 8-SOIC packages with identical footprints.

Q: Is the MCP6562-E/MS compatible with MAX942CSA PCB layouts?

A: The MCP6562-E/MS uses an 8-MSOP package (0.118" width) instead of the 8-SOIC package (0.154" width). While both are surface-mount 8-pin packages, the pin pitch and footprint differ. PCB layout modifications are required; direct footprint substitution is not possible without redesign.

Q: Why is input offset voltage higher in MCP6562 variants?

A: The MCP6562 series specifies a maximum input offset voltage of 10mV at 5.5V, compared to 2mV for MAX942CSA. This is a documented specification difference between the device families. Applications sensitive to input offset voltage should evaluate this parameter against circuit requirements.

Q: Are all substitute parts RoHS compliant?

A: Yes. MAX942CSA+ and both MCP6562 variants (MCP6562T-E/SN and MCP6562-E/MS) are ROHS3 compliant. The original MAX942CSA is RoHS non-compliant.

Q: What is the advantage of lower quiescent current in MCP6562 devices?

A: The MCP6562 series operates at 130µA maximum quiescent current compared to 600µA for MAX942CSA. This 4.6x reduction in quiescent current is beneficial for battery-powered applications and designs with strict power consumption budgets.

Q: Can MCP6562T-E/SN operate at 1.8V supply voltage?

A: Yes. The MCP6562T-E/SN supports supply voltage range of 1.8V ~ 5.5V, extending below the MAX942CSA minimum of 2.7V. This enables use in lower-voltage applications.