MAX997EUA-T Equivalent & Substitute Parts

Part Overview

The MAX997EUA-T is a general-purpose CMOS/TTL comparator manufactured by Analog Devices Inc./Maxim Integrated, housed in an 8-TSSOP/8-MSOP package. This device is classified as obsolete, making equivalent and substitute parts necessary for ongoing design support and production continuity. The MAX997EUA-T operates across a 2.7V to 5.5V supply range with a single comparator element, 1.5mV maximum input offset voltage, and 7ns propagation delay, making it suitable for precision voltage comparison applications.

Key Parameters

Parameter	Value
Comparator Elements	1
Output Type	CMOS, TTL
Supply Voltage Range	2.7V ~ 5.5V
Input Offset Voltage (Max)	1.5mV @ 5V
Input Bias Current (Max)	15µA @ 5V
Quiescent Current (Max)	6.5mA
CMRR / PSRR (Typ)	80dB / 86.02dB
Propagation Delay (Max)	7ns
Hysteresis	4.6mV
Operating Temperature	-40°C ~ 85°C
Package	8-TSSOP, 8-MSOP (0.118", 3.00mm Width)
Mounting Type	Surface Mount
RoHS Status	ROHS3 Compliant

Substitute Part Grouping Explanation

Substitution for the MAX997EUA-T is determined by the following critical parameters:

Single comparator element configuration
CMOS/TTL output compatibility
Supply voltage range overlap (minimum 2.7V ~ 5.5V or compatible subset)
Input offset voltage specification (1.5mV or lower preferred for precision applications)
Input bias current specification
Quiescent current rating
Operating temperature range (-40°C ~ 85°C minimum)
Surface mount package compatibility
RoHS3 compliance and regulatory alignment

The substitute parts are grouped into two categories:

Parametric Equivalent: MAX997EUA+T maintains identical electrical specifications and differs only in packaging format (Tape & Reel vs. bulk), making it a direct replacement with active product status.

Manufacturer Recommended Alternatives: LMV762MAX/NOPB, TC75S56F,LF, TC75S56FUTE85LF, and TC75S57FU(TE85L,F) provide functional equivalence with trade-offs in specific parameters such as element count, output type, propagation delay, or package form factor.

Parameter Comparison

Parameter	MAX997EUA-T	MAX997EUA+T	LMV762MAX/NOPB	TC75S56F,LF	TC75S56FUTE85LF	TC75S57FU(TE85L,F)
Manufacturer	Analog Devices/Maxim	Analog Devices/Maxim	Texas Instruments	Toshiba	Toshiba	Toshiba
Product Status	Obsolete	Active	Active	Active	Active	Active
Comparator Elements	1	1	2	1	1	1
Output Type	CMOS, TTL	CMOS, TTL	Push-Pull	Push-Pull	Push-Pull	Push-Pull
Supply Voltage Range	2.7V ~ 5.5V	2.7V ~ 5.5V	2.7V ~ 5V	1.8V ~ 7V, ±0.9V ~ 4.6V	1.8V ~ 7V, ±0.9V ~ 4.6V	1.8V ~ 7V, ±0.9V ~ 4.6V
Input Offset Voltage (Max)	1.5mV @ 5V	1.5mV @ 5V	0.2mV @ 5V	7mV @ 5V	7mV @ 5V	7mV @ 5V
Input Bias Current (Max)	15µA @ 5V	15µA @ 5V	50pA @ 5V	1pA @ 5V	1pA @ 5V	1pA @ 5V
Quiescent Current (Max)	6.5mA	6.5mA	700µA	22µA	20µA	220µA
CMRR / PSRR (Typ)	80dB / 86.02dB	80dB / 86.02dB	100dB / 110dB	Not specified	Not specified	Not specified
Propagation Delay (Max)	7ns	7ns	225ns	680ns	680ns	140ns
Operating Temperature	-40°C ~ 85°C	-40°C ~ 85°C	-40°C ~ 125°C	-40°C ~ 85°C	-40°C ~ 85°C	-40°C ~ 85°C
Package / Case	8-TSSOP, 8-MSOP	8-TSSOP, 8-MSOP	8-SOIC	SC-74A, SOT-753	5-TSSOP, SC-70-5, SOT-353	5-TSSOP, SC-70-5, SOT-353
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant

Engineering Selection Recommendations

MAX997EUA+T is the primary substitute for MAX997EUA-T. Both parts share identical electrical specifications and operating characteristics. The only difference is packaging format: MAX997EUA+T is supplied in Tape & Reel format with active product status and significantly higher inventory availability (2800 pcs vs. 695 pcs). This part is recommended for direct replacement in new designs and production continuity.

LMV762MAX/NOPB (Texas Instruments) is suitable when dual-comparator functionality is acceptable or beneficial. It offers superior input offset voltage (0.2mV) and CMRR/PSRR performance (100dB/110dB), with extended operating temperature range (-40°C ~ 125°C). The trade-off is significantly longer propagation delay (225ns vs. 7ns) and different output type (Push-Pull). Package is 8-SOIC. Select this part only if timing-critical applications can tolerate the increased delay.

TC75S56F,LF and TC75S56FUTE85LF (Toshiba) provide single-comparator, Push-Pull output alternatives with extended supply voltage range (1.8V ~ 7V). Both feature extremely low input bias current (1pA) and reduced quiescent current (22µA and 20µA respectively). Propagation delay is significantly longer (680ns). Package options are SC-74A/SOT-753 (TC75S56F,LF) and 5-TSSOP/SC-70-5/SOT-353 (TC75S56FUTE85LF). Select these parts for low-power applications where timing is not critical.

TC75S57FU(TE85L,F) (Toshiba) offers the fastest Toshiba alternative with 140ns propagation delay and 1pA input bias current. Quiescent current is higher (220µA). Package is 5-TSSOP/SC-70-5/SOT-353. This part balances speed and power consumption for applications requiring faster response than other Toshiba options.

All substitute parts maintain ROHS3 compliance and are actively manufactured, ensuring long-term availability and supply chain stability.

Frequently Asked Questions (FAQ)

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

A: Yes. MAX997EUA+T is electrically and functionally identical to MAX997EUA-T. The only difference is packaging format (Tape & Reel vs. bulk). Both operate at identical specifications across all electrical parameters. MAX997EUA+T is recommended as the primary substitute due to active product status.

Q: Why do the Toshiba alternatives (TC75S56F,LF, TC75S56FUTE85LF, TC75S57FU(TE85L,F)) have longer propagation delays?

A: Toshiba comparators are optimized for low-power operation with extremely low input bias current (1pA) and reduced quiescent current. This design approach results in longer propagation delays (680ns or 140ns) compared to the MAX997EUA-T (7ns). Select Toshiba parts only if timing requirements permit the increased delay.

Q: What is the difference between TC75S56F,LF and TC75S56FUTE85LF?

A: Both parts share identical electrical specifications and are based on the TC75S56 core. The primary difference is package form factor: TC75S56F,LF uses SC-74A/SOT-753 (6-pin), while TC75S56FUTE85LF uses 5-TSSOP/SC-70-5/SOT-353 (5-pin). Quiescent current is marginally lower in TC75S56FUTE85LF (20µA vs. 22µA). Select based on PCB layout requirements and available footprint space.

Q: Is LMV762MAX/NOPB suitable for single-comparator applications?

A: LMV762MAX/NOPB contains two comparator elements. While only one element needs to be used in single-comparator applications, the second element remains unused. This part is suitable if dual-comparator functionality is not required but offers superior performance metrics (0.2mV input offset, 100dB CMRR). The trade-off is significantly longer propagation delay (225ns) and different output type (Push-Pull vs. CMOS/TTL).

Q: Do all substitute parts support the same supply voltage range as MAX997EUA-T?

A: No. MAX997EUA-T operates at 2.7V ~ 5.5V. LMV762MAX/NOPB operates at 2.7V ~ 5V (slightly narrower upper limit). Toshiba parts (TC75S56F,LF, TC75S56FUTE85LF, TC75S57FU(TE85L,F)) support extended range 1.8V ~ 7V or dual supply ±0.9V ~ 4.6V. Verify supply voltage compatibility with your application before selection.

Q: Are all substitute parts RoHS3 compliant?

A: Yes. All listed substitute parts (MAX997EUA+T, LMV762MAX/NOPB, TC75S56F,LF, TC75S56FUTE85LF, TC75S57FU(TE85L,F)) are ROHS3 compliant, matching the compliance status of the original MAX997EUA-T.

Q: Which substitute part has the lowest power consumption?

A: TC75S56FUTE85LF has the lowest quiescent current at 20µA. TC75S56F,LF follows at 22µA. Both Toshiba parts feature 1pA input bias current, significantly lower than the MAX997EUA-T (15µA). Select TC75S56FUTE85LF for power-sensitive applications.

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