MAX941CSA-T Equivalent & Substitute Parts

Part Overview

The MAX941CSA-T is a single-channel comparator with latch and shutdown functionality manufactured by Analog Devices Inc./Maxim Integrated. This device operates as a CMOS, push-pull, TTL output comparator in an 8-SOIC surface mount package. The part is currently obsolete, making equivalent substitutes necessary for new designs or production continuity. The MAX941CSA-T provides low input offset voltage (2mV @ 5.5V) and fast propagation delay (80ns maximum), suitable for precision signal detection and threshold monitoring applications.

Key Parameters

Parameter	Value
Manufacturer Part Number	MAX941CSA-T
Manufacturer	Analog Devices Inc./Maxim Integrated
Product Status	Obsolete
Package / Case	8-SOIC (0.154", 3.90mm Width)
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)	700µA
CMRR, PSRR (Typ)	81.94dB CMRR, 81.94dB PSRR
Propagation Delay (Max)	80ns
Operating Temperature	0°C ~ 70°C
Output Type	CMOS, Push-Pull, TTL
Number of Elements	1
Type	with Latch, Shutdown
RoHS Status	ROHS3 Compliant
Moisture Sensitivity Level (MSL)	1 (Unlimited)

Substitute Part Grouping Explanation

Substitution for the MAX941CSA-T is determined by the following critical parameters:

Supply Voltage Range: 2.7V ~ 5.5V minimum compatibility
Input Offset Voltage: Maximum 2mV @ 5.5V for precision applications
Propagation Delay: Maximum 80ns for timing-critical circuits
Output Type: CMOS, Push-Pull, TTL configuration
Package Compatibility: 8-SOIC form factor or functionally equivalent packages
Functional Type: Comparator with latch and shutdown capability
Operating Temperature: Minimum 0°C ~ 70°C range

The substitute parts are grouped into two categories:

Category 1: Direct Form Factor Substitutes

MAX941CSA+T: Active product status variant of the same base part (MAX941), identical electrical specifications, 8-SOIC package

Category 2: Functional Equivalents with Package Variations

LMV7271MF/NOPB, LMV7271MFX/NOPB, LMV7271MGX/NOPB: Texas Instruments general-purpose comparators with compatible supply voltage, input offset, and propagation delay characteristics, available in SOT-23-5 and SC-70-5 packages
LMV7291MG, LMV7291MGX/NOPB: Texas Instruments general-purpose comparators with improved propagation delay (1.8µs), SC-70-5 package, Last Time Buy status
MCP6561RT-E/OT: Microchip Technology general-purpose comparator with compatible electrical specifications, SOT-23-5 package, extended operating temperature range
MCP65R41T-1202E/CHY: Microchip Technology comparator with integrated voltage reference, SOT-23-6 package
TLV3701QDBVREP, TLV3701QDBVRG4Q1: Texas Instruments general-purpose comparators with extended supply voltage range (2.7V ~ 16V), SOT-23-5 package, automotive-qualified variant available

Parameter Comparison

Part Number	Manufacturer	Package	Supply Voltage	Input Offset (Max)	Propagation Delay (Max)	Quiescent Current (Max)	Operating Temp	Product Status
MAX941CSA-T	Analog Devices/Maxim	8-SOIC	2.7V ~ 5.5V	2mV @ 5.5V	80ns	700µA	0°C ~ 70°C	Obsolete
MAX941CSA+T	Analog Devices/Maxim	8-SOIC	2.7V ~ 5.5V	2mV @ 5.5V	80ns	700µA	0°C ~ 70°C	Active
LMV7271MF/NOPB	Texas Instruments	SOT-23-5	1.8V ~ 5.5V	4mV @ 5V	2.1µs	14µA	-40°C ~ 85°C	Active
LMV7271MFX/NOPB	Texas Instruments	SOT-23-5	1.8V ~ 5.5V	4mV @ 5V	2.1µs	14µA	-40°C ~ 85°C	Active
LMV7271MGX/NOPB	Texas Instruments	SC-70-5	1.8V ~ 5.5V	4mV @ 5V	2.1µs	14µA	-40°C ~ 85°C	Active
LMV7291MG	Texas Instruments	SC-70-5	1.8V ~ 5V	4mV @ 5V	1.8µs	14µA	-40°C ~ 85°C	Last Time Buy
LMV7291MGX/NOPB	Texas Instruments	SC-70-5	1.8V ~ 5V	4mV @ 5V	1.8µs	14µA	-40°C ~ 85°C	Active
MCP6561RT-E/OT	Microchip Technology	SOT-23-5	1.8V ~ 5.5V	10mV @ 5.5V	80ns	130µA	-40°C ~ 125°C	Active
MCP65R41T-1202E/CHY	Microchip Technology	SOT-23-6	1.8V ~ 5.5V	10mV @ 5.5V	8µs	4µA	-40°C ~ 125°C	Active
TLV3701QDBVREP	Texas Instruments	SOT-23-5	2.7V ~ 16V	5mV @ 5V	240µs	1.2µA	-40°C ~ 125°C	Active
TLV3701QDBVRG4Q1	Texas Instruments	SOT-23-5	2.7V ~ 16V	5mV @ 5V	240µs	1.2µA	-40°C ~ 125°C	Active (Automotive)

Engineering Selection Recommendations

Primary Recommendation: MAX941CSA+T

The MAX941CSA+T is the direct active equivalent of the obsolete MAX941CSA-T. It maintains identical electrical specifications, package form factor (8-SOIC), and functional characteristics. This part is currently in active production status with 2203 units in stock. Selection of this part eliminates any design modification requirements and ensures pin-for-pin compatibility. RoHS3 compliance and MSL-1 rating match the original specification.

Secondary Recommendation: MCP6561RT-E/OT

The MCP6561RT-E/OT from Microchip Technology provides equivalent propagation delay performance (80ns maximum) matching the MAX941CSA-T specification. This part operates across the required 2.7V ~ 5.5V supply range and delivers compatible output characteristics (CMOS, Push-Pull, TTL). The extended operating temperature range (-40°C ~ 125°C) exceeds the original specification. Package change to SOT-23-5 requires PCB layout modification. RoHS3 compliance and MSL-1 rating are maintained. This option is suitable when package footprint change is acceptable and extended temperature operation is beneficial.

Alternative Recommendation: LMV7271MFX/NOPB or LMV7271MGX/NOPB

The LMV7271 series from Texas Instruments offers active production status with high inventory availability (17400 and 20626 units respectively). These parts support the required 2.7V ~ 5.5V supply range and deliver CMOS, Push-Pull, Rail-to-Rail output configuration. Extended operating temperature range (-40°C ~ 85°C) and improved quiescent current performance (14µA versus 700µA) provide operational advantages. Package options include SOT-23-5 (MFX variant) and SC-70-5 (MGX variant), both requiring PCB redesign. RoHS3 compliance and MSL-1 rating are maintained.

Consideration: TLV3701QDBVRG4Q1

The TLV3701QDBVRG4Q1 is automotive-qualified (AEC-Q100) with extended supply voltage capability (2.7V ~ 16V). This part is suitable for applications requiring automotive-grade reliability or higher supply voltage tolerance. The extended operating temperature range (-40°C ~ 125°C) and high inventory availability (429345 units) support production continuity. Package change to SOT-23-5 requires PCB modification. Propagation delay specification (240µs maximum) is significantly slower than the original part and may not be suitable for timing-critical applications.

Not Recommended: LMV7291 Series and MCP65R41T-1202E/CHY

The LMV7291MG carries Last Time Buy status, indicating end-of-life trajectory and future unavailability. The MCP65R41T-1202E/CHY includes integrated voltage reference functionality not present in the original part, adding unnecessary complexity and cost for direct substitution applications.

Frequently Asked Questions (FAQ)

Q: Can MAX941CSA+T be used as a direct replacement for MAX941CSA-T?

A: Yes. The MAX941CSA+T is the active production equivalent of the obsolete MAX941CSA-T. Electrical specifications, package form factor, and functional characteristics are identical. No design modifications are required. This is the recommended substitution path.

Q: What is the primary difference between the MAX941CSA-T and the LMV7271 series?

A: The MAX941CSA-T operates in an 8-SOIC package with 700µA quiescent current. The LMV7271 series uses smaller packages (SOT-23-5 or SC-70-5) with significantly lower quiescent current (14µA). The LMV7271 has slower propagation delay (2.1µs versus 80ns) and higher input offset voltage (4mV versus 2mV). Package change requires PCB redesign.

Q: Is the MCP6561RT-E/OT suitable for high-speed applications?

A: Yes. The MCP6561RT-E/OT matches the MAX941CSA-T propagation delay specification at 80ns maximum. It is suitable for timing-critical applications requiring fast comparator response. The extended operating temperature range (-40°C ~ 125°C) provides additional operational margin compared to the original part.

Q: Why is the TLV3701QDBVRG4Q1 slower than other substitutes?

A: The TLV3701QDBVRG4Q1 is optimized for extended supply voltage operation (2.7V ~ 16V) and automotive-grade reliability (AEC-Q100). The 240µs propagation delay reflects design trade-offs for these enhanced specifications. This part is suitable for low-speed threshold detection and automotive applications, not high-speed signal monitoring.

Q: Can I use the LMV7291MGX/NOPB instead of LMV7271MGX/NOPB?

A: Both parts are functionally compatible with the MAX941CSA-T supply voltage and output specifications. The LMV7291MGX/NOPB offers faster propagation delay (1.8µs versus 2.1µs) and is in active production status. However, the LMV7291MG base part carries Last Time Buy status, indicating future discontinuation. For new designs, the LMV7271MGX/NOPB is preferred due to longer product lifecycle.

Q: What package considerations apply when substituting the MAX941CSA-T?

A: The MAX941CSA-T uses an 8-SOIC package. Direct substitution with MAX941CSA+T requires no package change. Alternative substitutes use smaller packages: SOT-23-5 (5-pin) or SC-70-5 (5-pin). These package changes require PCB layout modification, including trace routing, via placement, and thermal management adjustments. Verify pin assignment compatibility before PCB redesign.

Q: Are all substitute parts RoHS3 compliant?

A: Yes. All listed substitute parts maintain RoHS3 compliance and MSL-1 (Unlimited) moisture sensitivity rating, matching the original MAX941CSA-T specification. Compliance certifications are consistent across all recommended alternatives.

Q: Which substitute offers the lowest power consumption?

A: The MCP65R41T-1202E/CHY provides the lowest quiescent current at 4µA maximum. However, this part includes integrated voltage reference functionality not present in the original MAX941CSA-T, making it unsuitable for direct substitution. Among true functional equivalents, the LMV7271 and LMV7291 series offer 14µA quiescent current, significantly lower than the original 700µA specification.

Request Quote (Ships tomorrow)

Part Number

Quantity

Company

Contact Name

E-mail

Message