MAX942MSA/PR Equivalent & Substitute Parts

Part Overview

The MAX942MSA/PR is a general-purpose CMOS/TTL comparator in 8-SOIC surface mount packaging manufactured by Analog Devices Inc./Maxim Integrated. This part is classified as obsolete, making equivalent and substitute parts necessary for new designs and ongoing production requirements. The device features single-element comparator architecture with supply voltage range of 2.5V to 11V (single) or ±1.25V to 5.5V (dual), input offset voltage of 10mV at 5V, and maximum propagation delay of 12µs. ROHS3 compliance and unlimited moisture sensitivity rating ensure suitability for industrial applications.

Key Parameters

Parameter	MAX942MSA/PR
Manufacturer	Analog Devices Inc./Maxim Integrated
Category	Linear
Description	IC COMPARATOR 1 GEN PUR 8SOIC
Type	General Purpose
Number of Elements	1
Output Type	CMOS, TTL
Voltage - Supply, Single/Dual (±)	2.5V ~ 11V, ±1.25V ~ 5.5V
Voltage - Input Offset (Max)	10mV @ 5V
Current - Quiescent (Max)	3.2µA
Propagation Delay (Max)	12µs
Operating Temperature	-55°C ~ 125°C
Package / Case	8-SOIC (0.154", 3.90mm Width)
Mounting Type	Surface Mount
Product Status	Obsolete
RoHS Status	ROHS3 Compliant
Moisture Sensitivity Level (MSL)	1 (Unlimited)

Substitute Part Grouping Explanation

Substitution for the MAX942MSA/PR is determined by the following critical parameters:

Package Compatibility: All substitute parts must use 8-SOIC (0.154", 3.90mm Width) surface mount packaging to ensure direct PCB footprint compatibility.

Functional Classification: All parts are general-purpose comparators with CMOS/TTL output architecture, maintaining functional equivalence in signal comparison applications.

Supply Voltage Range: Substitute parts must operate within overlapping voltage ranges. The MAX942MSA/PR operates at 2.5V ~ 11V (single) or ±1.25V ~ 5.5V (dual). Substitute parts with narrower ranges (such as 1.8V ~ 5.5V or 2.7V ~ 5.5V) remain compatible in applications using standard 5V or 3.3V supplies.

Operating Temperature: All parts maintain -40°C to -55°C minimum and 125°C maximum operating range, ensuring thermal compatibility across industrial specifications.

Regulatory Compliance: All substitute parts maintain ROHS3 compliance and MSL 1 (Unlimited) rating, matching the original part's environmental and regulatory status.

Parameter Comparison

Parameter	MAX942MSA/PR	MAX942MSA/PR+	MCP6562T-E/SN	TS3022IDT
Manufacturer	Analog Devices Inc./Maxim Integrated	Analog Devices Inc./Maxim Integrated	Microchip Technology	STMicroelectronics
Number of Elements	1	2	2	2
Output Type	CMOS, TTL	CMOS, Push-Pull, Rail-to-Rail, TTL	CMOS, Push-Pull, Rail-to-Rail, TTL	Push-Pull
Voltage - Supply, Single/Dual (±)	2.5V ~ 11V, ±1.25V ~ 5.5V	2.7V ~ 5.5V	1.8V ~ 5.5V	1.8V ~ 5V
Voltage - Input Offset (Max)	10mV @ 5V	2mV @ 5.5V	10mV @ 5.5V	8mV @ 5V
Current - Input Bias (Max)	-	0.4µA @ 5.5V	1pA @ 5.5V	0.16µA @ 5V
Current - Quiescent (Max)	3.2µA	600µA	130µA	90µA
Propagation Delay (Max)	12µs	200ns	80ns	105ns
Operating Temperature	-55°C ~ 125°C	-55°C ~ 125°C	-40°C ~ 125°C	-40°C ~ 125°C
Package / Case	8-SOIC (0.154", 3.90mm Width)	8-SOIC (0.154", 3.90mm Width)	8-SOIC (0.154", 3.90mm Width)	8-SOIC (0.154", 3.90mm Width)
Product Status	Obsolete	Active	Active	Active
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant
Moisture Sensitivity Level (MSL)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)

Engineering Selection Recommendations

MAX942MSA/PR+ (Analog Devices Inc./Maxim Integrated): This direct variant from the original manufacturer offers active product status with dual-element comparator architecture. It maintains identical operating temperature range (-55°C ~ 125°C) and package specifications. The narrower supply voltage range (2.7V ~ 5.5V) restricts use in applications requiring extended voltage operation but provides improved performance metrics including 2mV input offset voltage and 200ns propagation delay. ROHS3 compliance and MSL 1 rating match the original part. This option is preferred for designs requiring manufacturer continuity and extended temperature operation.

MCP6562T-E/SN (Microchip Technology): This active comparator provides the widest supply voltage range (1.8V ~ 5.5V) among substitutes, enabling operation in low-voltage applications. It delivers superior performance with 80ns propagation delay and 1pA input bias current. The dual-element configuration and push-pull rail-to-rail output architecture support modern low-voltage system designs. Operating temperature range is -40°C ~ 125°C. ROHS3 compliance and MSL 1 rating ensure regulatory alignment. This option is suitable for new designs prioritizing performance and low-voltage compatibility.

TS3022IDT (STMicroelectronics): This active comparator offers dual-element architecture with push-pull output in 8-SOIC packaging. Supply voltage range of 1.8V ~ 5V supports standard industrial supplies. Performance specifications include 105ns propagation delay and 0.16µA input bias current. Operating temperature range is -40°C ~ 125°C. ROHS3 compliance and MSL 1 rating match regulatory requirements. This option provides balanced performance and availability for general-purpose comparator applications.

Frequently Asked Questions (FAQ)

Q: Can MAX942MSA/PR+ be used as a direct replacement for MAX942MSA/PR?

A: MAX942MSA/PR+ shares identical 8-SOIC packaging and operating temperature range (-55°C ~ 125°C). However, the supply voltage range differs: MAX942MSA/PR+ operates at 2.7V ~ 5.5V versus the original 2.5V ~ 11V. Direct substitution is valid only in applications using 2.7V or higher supply voltages. Applications requiring 2.5V operation or extended voltage ranges above 5.5V require alternative parts.

Q: What is the primary difference between single-element and dual-element comparators?

A: The MAX942MSA/PR contains one comparator element, while MAX942MSA/PR+, MCP6562T-E/SN, and TS3022IDT each contain two independent comparator elements in the same 8-SOIC package. Dual-element parts provide functional redundancy and enable dual-channel comparison applications within a single package footprint.

Q: Are all substitute parts compatible with 5V supply operation?

A: Yes. All substitute parts (MAX942MSA/PR+, MCP6562T-E/SN, TS3022IDT) operate within 5V supply specifications. MAX942MSA/PR+ and TS3022IDT support up to 5.5V and 5V respectively. MCP6562T-E/SN supports up to 5.5V. All parts are compatible with standard 5V industrial applications.

Q: Which substitute part offers the fastest response time?

A: MCP6562T-E/SN provides the lowest propagation delay at 80ns maximum, compared to 105ns for TS3022IDT and 200ns for MAX942MSA/PR+. The original MAX942MSA/PR has 12µs propagation delay. MCP6562T-E/SN is suitable for applications requiring high-speed signal comparison.

Q: Do all parts maintain the same moisture sensitivity rating?

A: Yes. All parts, including the original MAX942MSA/PR and all substitutes, maintain MSL 1 (Unlimited) rating, indicating no moisture sensitivity restrictions during storage or handling.

Q: What is the operating temperature difference between the original part and substitutes?

A: The original MAX942MSA/PR and MAX942MSA/PR+ operate from -55°C to 125°C. MCP6562T-E/SN and TS3022IDT operate from -40°C to 125°C. Applications requiring operation below -40°C must use MAX942MSA/PR or MAX942MSA/PR+.

Q: Are all parts ROHS3 compliant?

A: Yes. All parts listed—MAX942MSA/PR, MAX942MSA/PR+, MCP6562T-E/SN, and TS3022IDT—maintain ROHS3 compliance status, meeting environmental and regulatory requirements for industrial and commercial applications.

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