MAX987ESA-T Equivalent & Substitute Parts

Part Overview

The MAX987ESA-T is a general-purpose CMOS comparator manufactured by Analog Devices Inc./Maxim Integrated, housed in an 8-SOIC surface-mount package. This device features rail-to-rail output, push-pull configuration, and TTL compatibility, making it suitable for precision voltage comparison applications across a 2.5V to 5.5V supply range.

The MAX987ESA-T is classified as obsolete. Equivalent and substitute parts are necessary to maintain design continuity and ensure component availability for new production runs, repairs, and system upgrades.

Substiute Parts

MAX987ESA-T

Analog Devices Inc./Maxim IntegratedIn Stock: 1029MAX987ESA-T Datasheet

Current PartRFQ

MAX987ESA+T

Analog Devices Inc./Maxim IntegratedIn Stock: 4676MAX987ESA+T Datasheet

Parametric EquivalentRFQ

BU5265HFV-TR

Rohm SemiconductorIn Stock: 18196BU5265HFV-TR Datasheet

MFR RecommendedRFQ

FAN156L6X

onsemiIn Stock: 50313FAN156L6X Datasheet

MFR RecommendedRFQ

LMV7219M5/NOPB

Texas InstrumentsIn Stock: 23142LMV7219M5/NOPB Datasheet

MFR RecommendedRFQ

MCP6541RT-E/OT

Microchip TechnologyIn Stock: 4341MCP6541RT-E/OT Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the MAX987ESA-T is determined by the following critical parameters:

• Output Type: CMOS, Push-Pull, Rail-to-Rail, TTL configuration
• Supply Voltage Range: Minimum 2.5V single supply or ±1.25V dual supply capability
• Input Offset Voltage: Maximum 5mV at rated supply
• Input Bias Current: Maximum 1pA at rated supply
• Quiescent Current: Maximum 96µA
• CMRR/PSRR: Minimum 80dB for both metrics
• Propagation Delay: Maximum 210ns
• Operating Temperature: -40°C to 85°C
• Package Compatibility: Surface-mount configuration with single comparator element
• Compliance: ROHS3 compliant, MSL Level 1

Substitute parts are grouped into two categories:

Direct Parametric Equivalent: MAX987ESA+T maintains identical electrical specifications and 8-SOIC packaging, differing only in product status (Active vs. Obsolete) and packaging format (Cut Tape & Digi-Reel vs. standard).

Functional Equivalents: BU5265HFV-TR, FAN156L6X, LMV7219M5/NOPB, and MCP6541RT-E/OT meet the core functional requirements (general-purpose CMOS comparator, push-pull output, rail-to-rail capability) but operate within different supply voltage ranges, package types, and performance characteristics. These parts are suitable where package footprint flexibility and supply voltage requirements permit.

Parameter Comparison

Engineering Selection Recommendations

MAX987ESA+T is the primary direct replacement for MAX987ESA-T. This part maintains identical electrical specifications, supply voltage range, and 8-SOIC package footprint. The only distinction is active product status and packaging format availability (Cut Tape & Digi-Reel). No circuit redesign is required. This substitute is recommended for applications requiring pin-for-pin and footprint compatibility.

BU5265HFV-TR (Rohm Semiconductor) is suitable for designs where lower quiescent current (45µA vs. 96µA) is beneficial and package transition to 5-HVSOF is acceptable. Supply voltage range extends to 1.8V minimum, providing greater flexibility in low-voltage applications. CMRR and PSRR specifications match the original device. Propagation delay is slower (500ns typical), which may impact timing-critical applications.

FAN156L6X (onsemi) offers the lowest quiescent current (17µA) and smallest package footprint (6-MicroPak). This part is suitable for power-constrained applications. Input offset voltage is higher (15mV maximum), and CMRR is reduced to 68dB. Extended supply voltage range (1.6V minimum) supports ultra-low-voltage designs. Package transition requires PCB layout modification.

LMV7219M5/NOPB (Texas Instruments) provides the fastest propagation delay (20ns) and highest CMRR/PSRR (85dB). This part is suitable for high-speed comparison applications. Quiescent current is significantly higher (1.8mA), making it unsuitable for battery-powered or power-sensitive designs. Supply voltage range is narrower (2.7V to 5V). Package is SOT-23-5, requiring PCB redesign.

MCP6541RT-E/OT (Microchip Technology) offers the lowest quiescent current (1µA) and extended operating temperature range (-40°C to 125°C). This part is suitable for extreme temperature environments and ultra-low-power applications. Propagation delay is significantly longer (8µs), unsuitable for time-critical comparisons. Supply voltage range is widest (1.6V to 5.5V). Package is SOT-23-5, requiring PCB redesign.

All substitute parts are ROHS3 compliant and MSL Level 1, meeting environmental and moisture sensitivity requirements equivalent to the original device.

Frequently Asked Questions (FAQ)

Q: Can MAX987ESA+T be used as a direct replacement for MAX987ESA-T without circuit modification?

A: Yes. MAX987ESA+T is a direct parametric equivalent with identical electrical specifications, supply voltage range, and 8-SOIC package footprint. No circuit redesign is required. The only differences are product status (Active vs. Obsolete) and packaging format availability.

Q: What is the primary reason to select a substitute part other than MAX987ESA+T?

A: Substitute selection depends on application-specific requirements. BU5265HFV-TR is chosen for reduced quiescent current and extended low-voltage capability. FAN156L6X is selected for ultra-low-power designs with smallest package footprint. LMV7219M5/NOPB is used for high-speed applications requiring fast propagation delay. MCP6541RT-E/OT is selected for extreme temperature environments and ultra-low-power operation.

Q: Are all substitute parts compatible with the original 8-SOIC package footprint?

A: No. MAX987ESA+T maintains the 8-SOIC footprint. BU5265HFV-TR uses 5-HVSOF (SOT-665) package. FAN156L6X uses 6-MicroPak (6-UFDFN) package. LMV7219M5/NOPB and MCP6541RT-E/OT use SOT-23-5 (SC-74A) package. Package transitions require PCB layout modification.

Q: What are the key electrical differences between MAX987ESA-T and the substitute parts?

A: Input offset voltage ranges from 5mV (MAX987ESA-T, MAX987ESA+T) to 15mV (FAN156L6X). Quiescent current varies from 1µA (MCP6541RT-E/OT) to 96µA (MAX987ESA-T). Propagation delay ranges from 20ns (LMV7219M5/NOPB) to 8µs (MCP6541RT-E/OT). Supply voltage ranges differ, with FAN156L6X and MCP6541RT-E/OT supporting lower minimum voltages (1.6V).

Q: Which substitute part has the lowest power consumption?

A: MCP6541RT-E/OT has the lowest quiescent current at 1µA maximum. FAN156L6X is the second-lowest option at 17µA maximum. For applications prioritizing power efficiency, these parts are preferred over the original MAX987ESA-T (96µA).

Q: Are all substitute parts rated for the same operating temperature range as MAX987ESA-T?

A: MAX987ESA-T, MAX987ESA+T, BU5265HFV-TR, FAN156L6X, and LMV7219M5/NOPB are rated -40°C to 85°C. MCP6541RT-E/OT extends the upper limit to 125°C, making it suitable for high-temperature environments.

Q: Do all substitute parts meet ROHS3 compliance and MSL Level 1 requirements?

A: Yes. All substitute parts listed are ROHS3 compliant and MSL Level 1 (Unlimited moisture sensitivity level), matching the environmental and handling requirements of the original MAX987ESA-T.