MAX942CSA-T Equivalent & Substitute Parts

Part Overview

The MAX942CSA-T is a dual-channel general-purpose comparator manufactured by Analog Devices Inc./Maxim Integrated in 8-SOIC surface-mount packaging. This device features CMOS, push-pull, and TTL output configurations with a supply voltage range of 2.7V to 5.5V and operates across the industrial temperature range of 0°C to 70°C. The MAX942CSA-T is classified as obsolete, making equivalent and substitute parts necessary for new designs and ongoing production support.

Key Parameters

Parameter	MAX942CSA-T
Number of Elements	2
Output Type	CMOS, Push-Pull, TTL
Voltage - Supply, Single/Dual (±)	2.7V ~ 5.5V
Voltage - Input Offset (Max)	2mV @ 5.5V
Current - Input Bias (Max)	0.15µA @ 5.5V
Current - Quiescent (Max)	600µA
CMRR, PSRR (Typ)	81.94dB CMRR, 81.94dB PSRR
Propagation Delay (Max)	80ns
Operating Temperature	0°C ~ 70°C
Package / Case	8-SOIC (0.154", 3.90mm Width)
Mounting Type	Surface Mount
RoHS Status	ROHS3 Compliant
Product Status	Obsolete

Substitute Part Grouping Explanation

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

Package compatibility: 8-SOIC surface-mount form factor (0.154", 3.90mm width)
Number of elements: Dual-channel configuration (2 comparators)
Supply voltage range: Minimum 2.7V support required
Output type: CMOS, push-pull, or TTL output capability
Propagation delay: Maximum 80ns specification
Operating temperature: Support for 0°C to 70°C minimum
RoHS compliance: ROHS3 Compliant status

Substitute parts are grouped into two categories: parametric equivalents (identical electrical specifications and packaging) and manufacturer-recommended alternatives (functionally compatible with allowable parameter variations within the specified ranges).

Parameter Comparison

Part Number	Manufacturer	Product Status	Output Type	Supply Voltage	Input Offset (Max)	Quiescent Current (Max)	Propagation Delay (Max)	Operating Temp	Package
MAX942CSA-T	Analog Devices/Maxim	Obsolete	CMOS, Push-Pull, TTL	2.7V ~ 5.5V	2mV @ 5.5V	600µA	80ns	0°C ~ 70°C	8-SOIC
MAX942CSA+T	Analog Devices/Maxim	Active	CMOS, Push-Pull, TTL	2.7V ~ 5.5V	2mV @ 5.5V	600µA	80ns	0°C ~ 70°C	8-SOIC
ADCMP392ARZ	Analog Devices	Active	Rail-to-Rail	2.3V ~ 5.5V	5mV	29.3µA	9.7µs	-40°C ~ 125°C	8-SOIC
ADCMP392ARZ-RL7	Analog Devices	Active	Rail-to-Rail	2.3V ~ 5.5V	5mV	29.3µA	9.7µs	-40°C ~ 125°C	8-SOIC
MCP6562-E/SN	Microchip Technology	Active	CMOS, Push-Pull, Rail-to-Rail, TTL	1.8V ~ 5.5V	10mV @ 5.5V	130µA	80ns	-40°C ~ 125°C	8-SOIC
MCP6562T-E/MS	Microchip Technology	Active	CMOS, Push-Pull, Rail-to-Rail, TTL	1.8V ~ 5.5V	10mV @ 5.5V	130µA	80ns	-40°C ~ 125°C	8-MSOP
TLV3202AID	Texas Instruments	Active	Push-Pull	2.7V ~ 5.5V	5mV @ 5V	50µA	50ns	-40°C ~ 125°C	8-SOIC
TLV3202AIDR	Texas Instruments	Active	Push-Pull	2.7V ~ 5.5V	5mV @ 5V	50µA	50ns	-40°C ~ 125°C	8-SOIC
TS3022IDT	STMicroelectronics	Active	Push-Pull	1.8V ~ 5V	8mV @ 5V	90µA	105ns	-40°C ~ 125°C	8-SOIC
TS332IDT	STMicroelectronics	Active	Open-Drain	1.6V ~ 5V	5mV @ 5V	26µA	720ns	-40°C ~ 125°C	8-SOIC
TS332IYDT	STMicroelectronics	Active	Open-Drain	1.6V ~ 5V	5mV @ 5V	26µA	720ns	-40°C ~ 125°C	8-SOIC

Engineering Selection Recommendations

Parametric Equivalent (Direct Replacement)

MAX942CSA+T is the active production equivalent of MAX942CSA-T. This part maintains identical electrical specifications, output type configuration, and 8-SOIC packaging. The primary difference is product status (active vs. obsolete) and packaging format (Cut Tape & Digi-Reel vs. standard). This part is ROHS3 compliant and carries unlimited moisture sensitivity rating (MSL 1).

Manufacturer-Recommended Alternatives

For applications requiring extended temperature range (-40°C to 125°C) and active product status, the following alternatives are qualified substitutes:

TLV3202AID / TLV3202AIDR (Texas Instruments): Maintains 2.7V ~ 5.5V supply range, push-pull output, and 8-SOIC packaging. Offers improved propagation delay (50ns vs. 80ns) and lower quiescent current (50µA vs. 600µA). ROHS3 compliant.
MCP6562-E/SN (Microchip Technology): Supports extended supply range (1.8V ~ 5.5V), includes CMOS, push-pull, rail-to-rail, and TTL output options, and maintains 80ns propagation delay. 8-SOIC packaging. ROHS3 compliant.
ADCMP392ARZ / ADCMP392ARZ-RL7 (Analog Devices): Rail-to-rail output configuration with 2.3V ~ 5.5V supply range. Extended temperature support. 8-SOIC packaging. ROHS3 compliant. Note: Propagation delay is 9.7µs, significantly longer than the original specification.

Package Consideration

MCP6562T-E/MS uses 8-MSOP (0.118", 3.00mm width) packaging instead of 8-SOIC. This requires PCB layout modification and is not a direct pin-compatible replacement.

Output Type Variations

TS332IDT and TS332IYDT feature open-drain output configuration, differing from the original CMOS/push-pull/TTL output. These parts require external pull-up resistors and are suitable only for applications designed for open-drain operation.

Frequently Asked Questions (FAQ)

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

A: Yes. MAX942CSA+T is the active production equivalent with identical electrical specifications, output type, and 8-SOIC packaging. The only differences are product status and packaging format (Cut Tape & Digi-Reel availability).

Q: What is the primary reason to substitute the MAX942CSA-T?

A: The MAX942CSA-T is classified as obsolete. Substitution is necessary to ensure long-term supply availability and support for new production runs. Active alternatives maintain compatibility within the specified electrical and mechanical parameters.

Q: Are all substitute parts pin-compatible with the MAX942CSA-T?

A: All substitute parts listed use 8-SOIC packaging except MCP6562T-E/MS, which uses 8-MSOP packaging. Pin compatibility exists for 8-SOIC variants. MCP6562T-E/MS requires PCB layout modification.

Q: Which substitute offers the best performance improvement?

A: TLV3202AID and TLV3202AIDR provide faster propagation delay (50ns vs. 80ns) and significantly lower quiescent current (50µA vs. 600µA) while maintaining the 2.7V ~ 5.5V supply range and 8-SOIC packaging.

Q: Can TS332IDT or TS332IYDT be used as substitutes?

A: TS332IDT and TS332IYDT feature open-drain output, not CMOS/push-pull/TTL. These are suitable only for applications specifically designed for open-drain operation and require external pull-up resistors.

Q: What is the difference between ADCMP392ARZ and ADCMP392ARZ-RL7?

A: Both parts have identical electrical specifications. The difference is packaging format: ADCMP392ARZ is supplied in Tube packaging, while ADCMP392ARZ-RL7 is supplied in Tape & Reel (TR) format.

Q: Do all substitute parts meet RoHS3 compliance?

A: Yes. All substitute parts listed are ROHS3 compliant and REACH unaffected, matching the compliance status of the original MAX942CSA-T.

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

A: The MAX942CSA-T operates 0°C ~ 70°C (industrial range). Most active substitutes support -40°C ~ 125°C (extended industrial/automotive range), providing broader temperature coverage for demanding applications.

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