MAX941ESA-T Equivalent & Substitute Parts

Part Overview

The MAX941ESA-T is a single-channel comparator with integrated latch and shutdown functionality, manufactured by Analog Devices Inc./Maxim Integrated. This CMOS device features push-pull TTL-compatible output and operates across a 2.7V to 5.5V supply range. The part is classified as obsolete, making equivalent and substitute parts necessary for new designs and ongoing production support. The MAX941ESA-T is housed in an 8-SOIC surface-mount package and is ROHS3 compliant with unlimited moisture sensitivity rating.

Key Parameters

Parameter	Value
Manufacturer	Analog Devices Inc./Maxim Integrated
Part Number	MAX941ESA-T
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	-40°C ~ 85°C
Output Type	CMOS, Push-Pull, TTL
Type	with Latch, Shutdown
Number of Elements	1
RoHS Status	ROHS3 Compliant
Moisture Sensitivity Level (MSL)	1 (Unlimited)

Substitute Part Grouping Explanation

Substitution for the MAX941ESA-T is determined by the following critical parameters:

Supply voltage range compatibility (minimum 2.7V ~ 5.5V overlap required)
Output type (CMOS, Push-Pull, TTL compatibility)
Input offset voltage performance (lower or equal to 2mV @ 5.5V preferred)
Propagation delay (80ns or faster preferred for timing-critical applications)
Operating temperature range (-40°C ~ 85°C minimum)
Package compatibility or functional equivalence
Product status and availability

The substitute parts are grouped into two categories:

Parametric Equivalent: MAX941ESA+T is an identical functional part with the same electrical specifications, differing only in packaging format (Tape & Reel vs. individual packaging).

Manufacturer Recommended Alternatives: TLV3701QDBVREP, LMV7271MG, MCP65R41T-1202E/CHY, and MCP65R41T-2402E/CHY offer comparable performance within the allowed parameter ranges but with trade-offs in package size, quiescent current, or propagation delay.

Parameter Comparison

Parameter	MAX941ESA-T	MAX941ESA+T	TLV3701QDBVREP	LMV7271MG	MCP65R41T-1202E/CHY	MCP65R41T-2402E/CHY
Manufacturer	Analog Devices	Analog Devices	Texas Instruments	Texas Instruments	Microchip Technology	Microchip Technology
Product Status	Obsolete	Active	Active	Last Time Buy	Active	Active
Package / Case	8-SOIC	8-SOIC	SC-74A, SOT-753	5-TSSOP, SC-70-5	SOT-23-6	SOT-23-6
Voltage - Supply (Min-Max)	2.7V ~ 5.5V	2.7V ~ 5.5V	2.7V ~ 16V (±1.35V ~ 8V)	1.8V ~ 5.5V (±0.9V ~ 2.5V)	1.8V ~ 5.5V	1.8V ~ 5.5V
Voltage - Input Offset (Max)	2mV @ 5.5V	2mV @ 5.5V	5mV @ 5V	4mV @ 5V	10mV @ 5.5V	10mV @ 5.5V
Current - Input Bias (Max)	0.15µA @ 5.5V	0.15µA @ 5.5V	250pA @ 5V	0.001µA @ 5V	1pA @ 5.5V	1pA @ 5.5V
Current - Quiescent (Max)	700µA	700µA	1.2µA	14µA	4µA	4µA
CMRR (Typ)	81.94dB	81.94dB	88dB	78dB	70dB	70dB
PSRR (Typ)	81.94dB	81.94dB	105dB	80dB	80dB	80dB
Propagation Delay (Max)	80ns	80ns	240µs	2.1µs	8µs	8µs
Operating Temperature	-40°C ~ 85°C	-40°C ~ 85°C	-40°C ~ 125°C	-40°C ~ 85°C	-40°C ~ 125°C	-40°C ~ 125°C
Output Type	CMOS, Push-Pull, TTL	CMOS, Push-Pull, TTL	CMOS, Push-Pull, Rail-to-Rail	CMOS, Push-Pull, Rail-to-Rail	CMOS, Push-Pull, TTL	CMOS, Push-Pull, TTL
Type	with Latch, Shutdown	with Latch, Shutdown	General Purpose	General Purpose	with Voltage Reference	with Voltage Reference
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant
Moisture Sensitivity Level (MSL)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)

Engineering Selection Recommendations

Direct Replacement (Recommended for Obsolete Stock Transition): MAX941ESA+T is the primary substitute for MAX941ESA-T. Both parts are electrically and functionally identical with matching 8-SOIC packaging. The only difference is packaging format (Tape & Reel vs. individual). MAX941ESA+T is currently in active production status with 5400 units in stock, making it the optimal choice for designs requiring the exact same performance characteristics and pinout.

Alternative Substitutes (For Design Flexibility): TLV3701QDBVREP, LMV7271MG, MCP65R41T-1202E/CHY, and MCP65R41T-2402E/CHY are manufacturer-recommended alternatives suitable for applications where package size reduction or extended temperature range is acceptable. These parts maintain ROHS3 compliance and unlimited MSL rating.

TLV3701QDBVREP offers superior PSRR (105dB) and extended supply voltage range (2.7V ~ 16V) but requires PCB layout changes due to SOT-23-5 packaging and exhibits slower propagation delay (240µs).
LMV3271MG provides the lowest input bias current (0.001µA) and operates at lower supply voltages (1.8V minimum) but is classified as Last Time Buy status.
MCP65R41T-1202E/CHY and MCP65R41T-2402E/CHY include integrated voltage reference functionality, reducing external component count. Both are active products with extended operating temperature range (-40°C ~ 125°C) and significantly lower quiescent current (4µA vs. 700µA).

All substitute parts maintain ROHS3 compliance and unlimited moisture sensitivity rating, ensuring regulatory and environmental compatibility with the original MAX941ESA-T specification.

Frequently Asked Questions (FAQ)

Q: Can MAX941ESA+T be used as a direct drop-in replacement for MAX941ESA-T? A: Yes. MAX941ESA+T is electrically and functionally identical to MAX941ESA-T with matching 8-SOIC packaging, pinout, and performance specifications. The only difference is packaging format (Tape & Reel). No circuit modifications are required.

Q: Why do the alternative substitutes have different package sizes? A: TLV3701QDBVREP uses SOT-23-5 packaging, LMV7271MG uses SC-70-5, and MCP65R41T variants use SOT-23-6. These smaller packages reduce PCB footprint but require layout redesign. Package selection depends on application space constraints and design flexibility.

Q: What is the impact of higher input offset voltage in substitute parts? A: MCP65R41T-1202E/CHY and MCP65R41T-2402E/CHY have 10mV input offset voltage compared to MAX941ESA-T's 2mV. This affects precision in low-level signal detection applications. For general-purpose comparator functions with larger signal margins, this difference is acceptable.

Q: Are all substitute parts ROHS3 compliant? A: Yes. All listed substitute parts are ROHS3 compliant with unlimited moisture sensitivity level (MSL 1), matching the environmental and regulatory requirements of the original MAX941ESA-T.

Q: Which substitute offers the lowest power consumption? A: MCP65R41T-1202E/CHY and MCP65R41T-2402E/CHY offer the lowest quiescent current at 4µA, compared to MAX941ESA-T's 700µA. This represents a 175x reduction in standby power consumption, beneficial for battery-powered or low-power applications.

Q: What is the difference between MCP65R41T-1202E/CHY and MCP65R41T-2402E/CHY? A: Both parts are electrically identical with the same performance specifications. The difference is in the integrated voltage reference value (1.202V vs. 2.402V). Selection depends on the reference voltage required by the application circuit.

Q: Can TLV3701QDBVREP replace MAX941ESA-T in timing-critical applications? A: TLV3701QDBVREP has a maximum propagation delay of 240µs compared to MAX941ESA-T's 80ns. This 3000x difference makes TLV3701QDBVREP unsuitable for high-speed comparator applications. Use only in applications where propagation delay is not a critical parameter.

Q: Is LMV7271MG still available for new designs? A: LMV7271MG is classified as Last Time Buy status, indicating limited future availability. While 1908 units are currently in stock, it is not recommended for new long-term production designs. Use MAX941ESA+T or active-status alternatives for ongoing projects.

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