MAX997EUA Equivalent & Substitute Parts

Part Overview

The MAX997EUA is a general-purpose CMOS/TTL comparator from Analog Devices Inc./Maxim Integrated, housed in an 8-uMAX/uSOP surface-mount package. This device is classified as obsolete, making equivalent and substitute parts necessary for new designs and production continuity. The MAX997EUA operates across a 2.7V to 5.5V supply range with a single comparator element and TTL/CMOS output configuration. Substitute parts must maintain functional equivalence within the specified electrical and mechanical parameters while considering product status and availability.

Key Parameters

Parameter	MAX997EUA
Manufacturer	Analog Devices Inc./Maxim Integrated
Product Status	Obsolete
Type	General Purpose Comparator
Number of Elements	1
Output Type	CMOS, TTL
Voltage - Supply, Single/Dual (±)	2.7V ~ 5.5V
Voltage - Input Offset (Max)	1.5mV @ 5V
Current - Input Bias (Max)	15µA @ 5V
Current - Quiescent (Max)	6.5mA
CMRR, PSRR (Typ)	80dB CMRR, 86.02dB PSRR
Propagation Delay (Max)	7ns
Hysteresis	4.6mV
Operating Temperature	-40°C ~ 85°C
Package / Case	8-TSSOP, 8-MSOP (0.118", 3.00mm Width)
Mounting Type	Surface Mount
RoHS Status	ROHS3 Compliant
Moisture Sensitivity Level (MSL)	1 (Unlimited)

Substitute Part Grouping Explanation

Substitution eligibility for the MAX997EUA is determined by the following critical parameters:

Primary Substitution Criteria:

Supply voltage range compatibility (minimum 2.7V to 5.5V overlap required)
Single comparator element configuration
Surface-mount package compatibility (8-TSSOP/8-MSOP footprint or equivalent)
Output type (CMOS/TTL or Push-Pull acceptable for logic-level applications)
Operating temperature range (-40°C minimum, 85°C minimum)
RoHS3 compliance and MSL Level 1 rating

Substitute Parts Identified:

MAX997EUA+ (Analog Devices Inc./Maxim Integrated) — Direct manufacturer variant with identical electrical specifications and active product status.
LMV762MM/NOPB (Texas Instruments) — Dual-element comparator with Push-Pull output, tighter input offset specification (0.2mV), and extended temperature range (-40°C to 125°C). Package footprint compatible (8-TSSOP).
LMV762QMAX/NOPB (Texas Instruments) — Dual-element comparator with automotive qualification (AEC-Q100) and Push-Pull output in 8-SOIC package. Equivalent electrical performance to LMV762MM/NOPB with different package form factor.
TC75S57F,LF (Toshiba Semiconductor and Storage) — Single-element comparator with Push-Pull output, wider supply voltage range (1.8V ~ 7V, ±0.9V ~ 4.6V), and SC-74A/SOT-753 package. Lower input bias current (1pA) and higher output current capability (25mA typical).

Parameter Comparison

Parameter	MAX997EUA	MAX997EUA+	LMV762MM/NOPB	LMV762QMAX/NOPB	TC75S57F,LF
Manufacturer	Analog Devices	Analog Devices	Texas Instruments	Texas Instruments	Toshiba
Product Status	Obsolete	Active	Active	Active	Active
Number of Elements	1	1	2	2	1
Output Type	CMOS, TTL	CMOS, TTL	Push-Pull	Push-Pull	Push-Pull
Voltage - Supply (V)	2.7 ~ 5.5	2.7 ~ 5.5	2.7 ~ 5	2.7 ~ 5	1.8 ~ 7 / ±0.9 ~ 4.6
Voltage - Input Offset (Max) @ 5V	1.5mV	1.5mV	0.2mV	0.2mV	7mV
Current - Input Bias (Max) @ 5V	15µA	15µA	50pA	50pA	1pA
Current - Quiescent (Max)	6.5mA	6.5mA	700µA	700µA	220µA
CMRR (Typ)	80dB	80dB	100dB	100dB	—
PSRR (Typ)	86.02dB	86.02dB	110dB	110dB	—
Propagation Delay (Max)	7ns	7ns	225ns	225ns	140ns
Operating Temperature	-40 ~ 85°C	-40 ~ 85°C	-40 ~ 125°C	-40 ~ 125°C	-40 ~ 85°C
Package / Case	8-TSSOP, 8-MSOP	8-TSSOP, 8-MSOP	8-TSSOP, 8-MSOP	8-SOIC	SC-74A, SOT-753
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant
MSL Rating	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)

Engineering Selection Recommendations

MAX997EUA+ (Direct Replacement): This is the active-status equivalent from the same manufacturer. It maintains identical electrical specifications and package configuration. Selection is appropriate for designs requiring exact functional equivalence with active product availability and full manufacturer support.

LMV762MM/NOPB and LMV762QMAX/NOPB (Texas Instruments): These dual-element comparators offer superior electrical performance with tighter input offset (0.2mV vs. 1.5mV), significantly lower input bias current (50pA vs. 15µA), and extended operating temperature range (-40°C to 125°C). The LMV762MM/NOPB maintains the 8-TSSOP footprint for direct PCB compatibility, while the LMV762QMAX/NOPB provides automotive-grade qualification (AEC-Q100) in 8-SOIC packaging. Selection is appropriate when improved precision and thermal performance are required, or when automotive qualification is mandated.

TC75S57F,LF (Toshiba): This single-element comparator offers the widest supply voltage range (1.8V to 7V) and exceptional input bias current performance (1pA). It provides higher output current capability (25mA typical) and lower quiescent current (220µA). The SC-74A/SOT-753 package requires PCB layout modification. Selection is appropriate for ultra-low-power applications, wide supply voltage requirements, or designs where package footprint change is acceptable.

All substitute parts maintain ROHS3 compliance and MSL Level 1 rating, ensuring compatibility with standard manufacturing and storage requirements.

Frequently Asked Questions (FAQ)

Q: Can MAX997EUA+ be used as a direct replacement for MAX997EUA?

A: Yes. MAX997EUA+ is the active-status variant from Analog Devices Inc./Maxim Integrated with identical electrical specifications, package configuration, and pin assignment. No design modifications are required.

Q: Why do the Texas Instruments LMV762 variants have different element counts?

A: The LMV762MM/NOPB and LMV762QMAX/NOPB contain two comparator elements within the same package footprint, compared to the single element in MAX997EUA. Applications requiring only one comparator can utilize a single device, leaving the second element unused. This does not affect functional compatibility for single-comparator applications.

Q: What is the primary difference between LMV762MM/NOPB and LMV762QMAX/NOPB?

A: Both devices share identical electrical specifications. The LMV762MM/NOPB is housed in an 8-TSSOP package (0.118" width), while the LMV762QMAX/NOPB uses an 8-SOIC package (0.154" width). The LMV762QMAX/NOPB carries automotive qualification (AEC-Q100). Package selection depends on PCB layout constraints and application requirements.

Q: Is the TC75S57F,LF suitable for direct PCB replacement?

A: No. The TC75S57F,LF uses an SC-74A/SOT-753 package, which differs from the 8-TSSOP/8-MSOP footprint of MAX997EUA. PCB layout modification is required. However, electrical compatibility is maintained within the specified supply voltage and operating temperature ranges.

Q: What are the key performance advantages of LMV762 variants over MAX997EUA?

A: The LMV762 series offers tighter input offset voltage specification (0.2mV vs. 1.5mV), significantly lower input bias current (50pA vs. 15µA), higher CMRR and PSRR values (100dB and 110dB respectively), and extended operating temperature range (-40°C to 125°C vs. -40°C to 85°C). These improvements benefit precision analog applications and thermal environments.

Q: Are all substitute parts RoHS3 compliant?

A: Yes. All listed substitute parts (MAX997EUA+, LMV762MM/NOPB, LMV762QMAX/NOPB, and TC75S57F,LF) are ROHS3 compliant with MSL Level 1 rating, meeting standard environmental and manufacturing requirements.

Q: Which substitute part offers the lowest power consumption?

A: The TC75S57F,LF provides the lowest quiescent current at 220µA maximum, compared to 6.5mA for MAX997EUA and 700µA for LMV762 variants. This makes it suitable for battery-powered and ultra-low-power applications.

Q: Can MAX997EUA be replaced in automotive applications?

A: The LMV762QMAX/NOPB is specifically qualified for automotive use (AEC-Q100). For non-automotive applications, all substitute parts maintain equivalent reliability and compliance standards. Automotive application requirements should be verified against design specifications.

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