MAX982ESA Equivalent & Substitute Parts

Part Overview

The MAX982ESA is a dual comparator with integrated voltage reference in 8-SOIC surface mount packaging, manufactured by Analog Devices Inc./Maxim Integrated. This device is classified as obsolete, with 881 pieces currently in stock. The MAX982ESA operates across a wide supply voltage range (2.5V to 11V single supply, ±1.25V to ±5.5V dual supply) and features 50mV hysteresis with 80dB CMRR and PSRR performance. Due to its obsolete status, equivalent active alternatives are available from the same manufacturer with identical or superior electrical characteristics and improved availability.

Key Parameters

Parameter	Value
Number of Elements	2
Type	with Voltage Reference
Voltage - Supply, Single/Dual (±)	2.5V ~ 11V, ±1.25V ~ 5.5V
Voltage - Input Offset (Max)	10mV @ 5V
Current - Quiescent (Max)	6µA
CMRR, PSRR (Typ)	80dB CMRR, 80dB PSRR
Hysteresis	50mV
Operating Temperature	-40°C ~ 85°C
Package / Case	8-SOIC (0.154", 3.90mm Width)
Mounting Type	Surface Mount
RoHS Status	ROHS3 Compliant
Moisture Sensitivity Level (MSL)	1 (Unlimited)

Substitute Part Grouping Explanation

Substitution of the MAX982ESA is determined by the following critical parameters that must remain constant or improve:

Number of Elements: Must be 2 (dual comparator configuration)
Type: Must include integrated voltage reference
Package / Case: Must be 8-SOIC (0.154", 3.90mm Width) for mechanical and electrical compatibility
Voltage - Supply Range: Must support 2.5V ~ 11V single supply and ±1.25V ~ 5.5V dual supply
Voltage - Input Offset (Max): Must not exceed 10mV @ 5V
CMRR, PSRR (Typ): Must maintain 80dB minimum performance
Hysteresis: Must be 50mV
Mounting Type: Must be Surface Mount
RoHS Status: Must maintain ROHS3 Compliance

The substitute parts listed below meet all these criteria. The LTC1842 and LTC1843 series represent manufacturer-recommended alternatives with active product status, improved quiescent current performance (5.7µA vs. 6µA), and specified propagation delay characteristics (12µs). The MAX982ESA+ variant provides a direct form-fit-function replacement with active status and identical electrical specifications.

Parameter Comparison

Parameter	MAX982ESA	MAX982ESA+	LTC1842CS8#PBF	LTC1842CS8#TRPBF	LTC1842IS8#PBF	LTC1842IS8#TRPBF	LTC1843CS8#PBF	LTC1843CS8#TRPBF	LTC1843IS8#PBF	LTC1843IS8#TRPBF
Manufacturer	Analog Devices Inc./Maxim Integrated	Analog Devices Inc./Maxim Integrated	Analog Devices Inc.	Analog Devices Inc.	Analog Devices Inc.	Analog Devices Inc.	Analog Devices Inc.	Analog Devices Inc.	Analog Devices Inc.	Analog Devices Inc.
Product Status	Obsolete	Active	Active	Active	Active	Active	Active	Active	Active	Active
Number of Elements	2	2	2	2	2	2	2	2	2	2
Type	with Voltage Reference	with Voltage Reference	with Voltage Reference	with Voltage Reference	with Voltage Reference	with Voltage Reference	with Voltage Reference	with Voltage Reference	with Voltage Reference	with Voltage Reference
Output Type	—	—	Open-Drain	Open-Drain	Open-Drain	Open-Drain	Open-Drain	Open-Drain	Open-Drain	Open-Drain
Voltage - Supply, Single/Dual (±)	2.5V ~ 11V, ±1.25V ~ 5.5V	2.5V ~ 11V, ±1.25V ~ 5.5V	2.5V ~ 11V, ±1.25V ~ 5.5V	2.5V ~ 11V, ±1.25V ~ 5.5V	2.5V ~ 11V, ±1.25V ~ 5.5V	2.5V ~ 11V, ±1.25V ~ 5.5V	2.5V ~ 11V, ±1.25V ~ 5.5V	2.5V ~ 11V, ±1.25V ~ 5.5V	2.5V ~ 11V, ±1.25V ~ 5.5V	2.5V ~ 11V, ±1.25V ~ 5.5V
Voltage - Input Offset (Max)	10mV @ 5V	10mV @ 5V	10mV @ 5V	10mV @ 5V	10mV @ 5V	10mV @ 5V	10mV @ 5V	10mV @ 5V	10mV @ 5V	10mV @ 5V
Current - Quiescent (Max)	6µA	6µA	5.7µA	5.7µA	5.7µA	5.7µA	5.7µA	5.7µA	5.7µA	5.7µA
CMRR, PSRR (Typ)	80dB CMRR, 80dB PSRR	80dB CMRR, 80dB PSRR	80dB CMRR, 80dB PSRR	80dB CMRR, 80dB PSRR	80dB CMRR, 80dB PSRR	80dB CMRR, 80dB PSRR	80dB CMRR, 80dB PSRR	80dB CMRR, 80dB PSRR	80dB CMRR, 80dB PSRR	80dB CMRR, 80dB PSRR
Propagation Delay (Max)	—	—	12µs	12µs	12µs	12µs	12µs	12µs	12µs	12µs
Hysteresis	50mV	50mV	50mV	50mV	50mV	50mV	50mV	50mV	50mV	50mV
Operating Temperature	-40°C ~ 85°C	-40°C ~ 85°C	0°C ~ 70°C	0°C ~ 70°C	-40°C ~ 85°C	-40°C ~ 85°C	0°C ~ 70°C	0°C ~ 70°C	-40°C ~ 85°C	-40°C ~ 85°C
Package / Case	8-SOIC (0.154", 3.90mm Width)	8-SOIC (0.154", 3.90mm Width)	8-SOIC (0.154", 3.90mm Width)	8-SOIC (0.154", 3.90mm Width)	8-SOIC (0.154", 3.90mm Width)	8-SOIC (0.154", 3.90mm Width)	8-SOIC (0.154", 3.90mm Width)	8-SOIC (0.154", 3.90mm Width)	8-SOIC (0.154", 3.90mm Width)	8-SOIC (0.154", 3.90mm Width)
Mounting Type	Surface Mount	Surface Mount	Surface Mount	Surface Mount	Surface Mount	Surface Mount	Surface Mount	Surface Mount	Surface Mount	Surface Mount
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	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)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)
Packaging	—	Tube	Tube	Tape & Reel (TR)	Tube	Tape & Reel (TR)	Tube	Tape & Reel (TR)	Tube	Tape & Reel (TR)
Inventory (Pcs)	881	1134	1239	2352	2994	8502	2006	3838	2700	6023

Engineering Selection Recommendations

Direct Replacement (Identical Specifications): MAX982ESA+ is the direct active equivalent with identical electrical specifications and -40°C to 85°C operating temperature range. This part maintains all original performance characteristics while offering active product status and improved availability (1134 units in stock).

Manufacturer-Recommended Alternatives (LTC1842 and LTC1843 Series): The LTC1842 and LTC1843 series represent Analog Devices' recommended substitutes with the following engineering considerations:

All LTC184x variants maintain identical supply voltage ranges, input offset voltage, CMRR/PSRR performance, and hysteresis specifications
LTC1842 and LTC1843 feature Open-Drain output configuration versus the MAX982ESA's unspecified output type
Quiescent current is improved to 5.7µA (versus 6µA), reducing power consumption
Propagation delay is specified at 12µs for LTC184x devices
Temperature range variants available: LTC1842IS8 and LTC1843IS8 support -40°C to 85°C (matching MAX982ESA); LTC1842CS8 and LTC1843CS8 support 0°C to 70°C

Packaging Availability: All substitute parts are available in both Tube and Tape & Reel (TR) packaging formats. Tape & Reel variants provide significantly higher inventory levels (2352 to 8502 units) for high-volume applications.

Compliance: All substitute parts maintain ROHS3 compliance, MSL Level 1 (Unlimited), and identical ECCN/HTSUS classifications, ensuring regulatory and supply chain compatibility.

Frequently Asked Questions (FAQ)

Q: Can LTC1842 or LTC1843 be used as direct replacements for MAX982ESA? A: Yes. Both LTC1842 and LTC1843 series meet all critical electrical parameters: dual comparator configuration, integrated voltage reference, identical supply voltage ranges (2.5V ~ 11V single, ±1.25V ~ 5.5V dual), 10mV input offset, 80dB CMRR/PSRR, and 50mV hysteresis. The 8-SOIC package is identical. The primary difference is Open-Drain output configuration in LTC184x devices. Verify your circuit design accommodates Open-Drain outputs if transitioning from MAX982ESA.

Q: What is the difference between LTC1842 and LTC1843? A: LTC1842 and LTC1843 are functionally equivalent dual comparators with voltage reference. Both share identical electrical specifications and packaging. Selection between them depends on availability and temperature range requirements. LTC1842 and LTC1843 are interchangeable from an electrical standpoint.

Q: Does operating temperature range affect substitution compatibility? A: Operating temperature range does not affect electrical substitution compatibility. However, application requirements determine which variant is appropriate. LTC1842IS8 and LTC1843IS8 support -40°C to 85°C (matching MAX982ESA). LTC1842CS8 and LTC1843CS8 support 0°C to 70°C. Select the temperature-rated variant matching your application's thermal requirements.

Q: What is the difference between Tube and Tape & Reel packaging? A: Tube and Tape & Reel are packaging formats for the same electrical component. Tube packaging is suitable for lower-volume applications and manual assembly. Tape & Reel packaging is optimized for automated pick-and-place assembly and high-volume production. Electrical specifications are identical; selection depends on assembly process and volume requirements.

Q: Why does MAX982ESA have higher inventory than some substitutes? A: MAX982ESA is classified as obsolete, and the listed inventory (881 units) represents remaining stock. Active alternatives like LTC1842IS8#TRPBF (8502 units) and LTC1843IS8#TRPBF (6023 units) have significantly higher availability due to active production status. For new designs or long-term supply assurance, active alternatives are recommended.

Q: Are all substitute parts ROHS3 compliant? A: Yes. MAX982ESA and all listed substitute parts (MAX982ESA+, LTC1842 series, LTC1843 series) are ROHS3 compliant with MSL Level 1 (Unlimited) moisture sensitivity rating. All parts maintain identical regulatory compliance and supply chain certifications.

Q: What is the significance of the Open-Drain output in LTC1842 and LTC1843? A: Open-Drain output requires an external pull-up resistor to establish a high logic level. This differs from the MAX982ESA's unspecified output type. Verify your circuit design includes appropriate pull-up resistors if transitioning to LTC184x devices. Open-Drain configuration provides flexibility in interfacing with different logic voltage levels.

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