MAX985ESA Equivalent & Substitute Parts

Part Overview

The MAX985ESA is a general-purpose CMOS comparator manufactured by Analog Devices Inc./Maxim Integrated, featuring push-pull, rail-to-rail, and TTL output capabilities in an 8-SOIC surface mount package. The device is currently classified as obsolete, making identification of suitable substitute components essential for ongoing design support and production continuity. Active alternatives with equivalent electrical performance are available to ensure uninterrupted component availability.

Substiute Parts

MAX985ESA

Analog Devices Inc./Maxim IntegratedIn Stock: 1564MAX985ESA Datasheet

Current PartRFQ

MAX985ESA+

Analog Devices Inc./Maxim IntegratedIn Stock: 1029MAX985ESA+ Datasheet

DirectRFQ

LMV7219M5

National SemiconductorIn Stock: 1406LMV7219M5 Datasheet

MFR RecommendedRFQ

LMV7219M5X/NOPB

National SemiconductorIn Stock: 41205LMV7219M5X/NOPB Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute components for the MAX985ESA are identified based on strict electrical and mechanical compatibility criteria. The primary substitution logic is based on the following allowed parameters:

Electrical Compatibility Parameters:

• Supply voltage range: 2.5V ~ 5.5V (single/dual) or ±1.25V ~ 2.75V
• Input offset voltage: 5mV maximum at 5.5V
• Input bias current: 1pA maximum at 5.5V
• Quiescent current: 24µA maximum
• CMRR/PSRR: 80dB minimum
• Propagation delay: 450ns maximum
• Hysteresis: ±3mV
• Operating temperature: -40°C ~ 85°C

Mechanical Compatibility Parameters:

• Package type: 8-SOIC surface mount
• Pin configuration: 8-pin SOIC footprint

Substitute parts are grouped into two categories: direct package equivalents and functional alternatives with different package configurations. Direct equivalents maintain identical 8-SOIC packaging, while functional alternatives may utilize different surface mount packages provided electrical specifications remain within acceptable tolerance ranges.

Parameter Comparison

Engineering Selection Recommendations

MAX985ESA+ (Direct Equivalent): This part is the active production equivalent of the MAX985ESA, manufactured by the same supplier with identical electrical specifications and 8-SOIC packaging. It is the preferred substitute for direct replacement in existing designs. Product status is active, ensuring long-term availability and supply chain stability.

LMV7219M5 and LMV7219M5X/NOPB (Functional Alternatives): These National Semiconductor comparators provide functional equivalence with active product status. Both devices operate within the required supply voltage range and maintain general-purpose comparator functionality. The LMV7219M5X/NOPB variant offers improved propagation delay performance (20ns versus 450ns) and higher CMRR/PSRR ratings (85dB versus 80dB). However, this variant uses SOT-23-5 packaging rather than 8-SOIC, requiring PCB layout modifications. The LMV7219M5 specifications are partially documented, with confirmed active status and compatibility with the operating temperature range.

Selection between these alternatives depends on packaging constraints and performance requirements. Direct package compatibility favors MAX985ESA+, while applications tolerating package changes may benefit from LMV7219M5X/NOPB performance characteristics.

Frequently Asked Questions (FAQ)

Q: Can MAX985ESA+ be used as a direct replacement for MAX985ESA?

A: Yes. MAX985ESA+ is manufactured by the same supplier with identical electrical specifications, output characteristics, and 8-SOIC packaging. It is a direct pin-compatible substitute with active product status.

Q: What are the key differences between MAX985ESA and LMV7219M5X/NOPB?

A: Both are general-purpose comparators with push-pull, rail-to-rail outputs and compatible operating temperature ranges. LMV7219M5X/NOPB offers faster propagation delay (20ns versus 450ns) and higher CMRR/PSRR (85dB versus 80dB). The primary difference is packaging: LMV7219M5X/NOPB uses SOT-23-5 (5-pin) versus 8-SOIC (8-pin), requiring PCB redesign for implementation.

Q: Are all substitute parts RoHS compliant?

A: MAX985ESA and MAX985ESA+ are confirmed ROHS3 compliant. RoHS compliance status for LMV7219M5 and LMV7219M5X/NOPB is not specified in the provided documentation.

Q: What is the impact of different hysteresis values on substitution?

A: MAX985ESA specifies ±3mV hysteresis, while LMV7219M5X/NOPB specifies 7.5mV. Hysteresis affects noise immunity and switching threshold behavior. Applications requiring precise hysteresis control should verify compatibility with the substitute part's specification before implementation.

Q: Can LMV7219M5 be used in place of MAX985ESA?

A: LMV7219M5 is an active product with confirmed general-purpose comparator functionality and compatible operating temperature range. However, complete electrical specifications are not fully documented in the provided data. Verification against specific application requirements is necessary before selection.

Q: What packaging considerations apply to LMV7219M5X/NOPB substitution?

A: LMV7219M5X/NOPB uses SOT-23-5 (5-pin) surface mount packaging, compared to the 8-SOIC (8-pin) of MAX985ESA. PCB layout and footprint modifications are required. Pin configuration differences must be verified against application schematics before implementation.