MAX986ESA-T Equivalent & Substitute Parts

Part Overview

The MAX986ESA-T is a general-purpose CMOS comparator with open-drain, rail-to-rail output and TTL compatibility, manufactured by Analog Devices Inc./Maxim Integrated in an 8-SOIC surface-mount package. This part is classified as obsolete, making equivalent substitutes necessary for new designs and ongoing production requirements. The NCS2202 series from onsemi provides functionally compatible alternatives across multiple package options while maintaining core electrical performance characteristics.

Substiute Parts

MAX986ESA-T

Analog Devices Inc./Maxim IntegratedIn Stock: 864MAX986ESA-T Datasheet

Current PartRFQ

NCS2202AMUTBG

onsemiIn Stock: 6778NCS2202AMUTBG Datasheet

MFR RecommendedRFQ

NCS2202SN1T1G

onsemiIn Stock: 15476NCS2202SN1T1G Datasheet

MFR RecommendedRFQ

NCS2202SQ1T2G

onsemiIn Stock: 3871NCS2202SQ1T2G Datasheet

MFR RecommendedRFQ

NCS2202SQ2T2G

onsemiIn Stock: 10334NCS2202SQ2T2G Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the MAX986ESA-T is based on the following electrical and mechanical criteria:

Core Functional Requirements:

• Single general-purpose comparator element
• Open-drain output with rail-to-rail capability
• Input offset voltage: 5mV maximum
• Input bias current: 1pA maximum
• CMRR and PSRR performance: minimum 70dB
• Operating temperature range: -40°C minimum to 85°C minimum
• RoHS3 compliance and MSL Level 1 rating

Acceptable Variations:

• Supply voltage range may exceed the original specification (0.85V ~ 6V is acceptable for 2.5V ~ 5.5V requirement)
• Quiescent current may be lower than the original 24µA maximum
• Propagation delay may exceed 450ns (up to 1.1µs acceptable)
• Hysteresis may differ from ±3mV (20mV acceptable for general-purpose applications)
• Package form factor may differ (6-UDFN, 5-TSOP, SC-88A available as alternatives to 8-SOIC)

The NCS2202 series from onsemi meets all core functional requirements and maintains compatibility with the MAX986ESA-T electrical specifications while offering active product status and multiple packaging options.

Parameter Comparison

Engineering Selection Recommendations

All four NCS2202 variants are active products from onsemi with ROHS3 compliance and MSL Level 1 rating, providing long-term availability and supply chain stability compared to the obsolete MAX986ESA-T.

Package Selection Criteria:

NCS2202AMUTBG (6-UDFN): Smallest footprint option for space-constrained applications. Suitable for designs where PCB real estate is a primary concern.

NCS2202SN1T1G (5-TSOP): Standard thin-profile package offering moderate size reduction from 8-SOIC while maintaining familiar lead spacing. Highest inventory availability (15,401 pcs).

NCS2202SQ1T2G and NCS2202SQ2T2G (SC-88A): Compact 5-lead packages with SC-70-5/SOT-353 compatibility. Both variants are electrically identical; selection depends on supplier availability and tape reel specifications.

Electrical Compatibility:

All substitutes maintain the 5mV input offset voltage and 1pA input bias current specifications. The extended supply voltage range (0.85V ~ 6V) provides broader application flexibility. Quiescent current is reduced to 17µA, improving power efficiency. The extended operating temperature range (-40°C ~ 105°C) supports wider environmental conditions.

Propagation delay increases from 450ns to 1.1µs and hysteresis increases from ±3mV to 20mV. These changes are acceptable for general-purpose comparator applications where timing margins and hysteresis requirements are not critical design constraints.

Frequently Asked Questions (FAQ)

Q: Can NCS2202 series parts directly replace MAX986ESA-T in existing designs?

A: Electrical substitution is valid for general-purpose comparator applications. However, package differences require PCB layout modifications. The 8-SOIC footprint of MAX986ESA-T differs from all NCS2202 package options (6-UDFN, 5-TSOP, SC-88A). Pin assignments must be verified against specific variant datasheets before implementation.

Q: What is the impact of increased propagation delay (450ns to 1.1µs)?

A: The 2.4x increase in propagation delay affects timing-sensitive applications. For general-purpose threshold detection and signal conditioning, this change is typically acceptable. Applications requiring sub-microsecond response times should evaluate timing margins against system requirements.

Q: How does the hysteresis change from ±3mV to 20mV affect circuit performance?

A: Increased hysteresis reduces susceptibility to noise near the threshold point, improving stability in noisy environments. Applications requiring precise threshold detection with minimal hysteresis should evaluate the 20mV specification against noise margins in the target circuit.

Q: Which NCS2202 variant should be selected for new designs?

A: NCS2202SN1T1G (5-TSOP) is recommended for new designs due to highest inventory availability, familiar package profile, and active product status. Alternative packages (6-UDFN, SC-88A) are suitable when specific PCB space or assembly constraints require smaller form factors.

Q: Are all NCS2202 variants pin-compatible?

A: No. Each variant uses a different package with different pin configurations. NCS2202AMUTBG (6-UDFN), NCS2202SN1T1G (5-TSOP), and NCS2202SQ1T2G/SQ2T2G (SC-88A) require separate PCB layouts. Pin assignments must be verified in the respective component datasheets.

Q: What is the supply voltage compatibility range for NCS2202 substitutes?

A: NCS2202 series operates from 0.85V to 6V, exceeding the MAX986ESA-T range of 2.5V ~ 5.5V (single supply) or ±1.25V ~ 2.75V (dual supply). This extended range provides design flexibility for low-voltage and higher-voltage applications.

Q: Are RoHS and compliance certifications maintained with NCS2202 substitutes?

A: Yes. All NCS2202 variants are ROHS3 compliant with MSL Level 1 rating, matching the MAX986ESA-T compliance profile. REACH status is unaffected for all parts.