MAX903ESA+ Equivalent & Substitute Parts

Part Overview

The MAX903ESA+ is a single-channel comparator with integrated latch functionality, manufactured by Analog Devices Inc./Maxim Integrated. This device operates as a TTL-output comparator in an 8-SOIC surface-mount package, designed for applications requiring latched comparison logic. The part is currently in active production status with 1900 units available in new original inventory. Finding equivalent or substitute parts is necessary when addressing supply chain constraints, lead time requirements, or design flexibility needs while maintaining functional and electrical compatibility.

Substiute Parts

MAX903ESA+

Analog Devices Inc./Maxim IntegratedIn Stock: 1997MAX903ESA+ Datasheet

Current PartRFQ

MAX903ESA+

Analog Devices Inc./Maxim IntegratedIn Stock: 1997MAX903ESA+ Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the MAX903ESA+ is determined by strict alignment across the following critical parameters:

• Functional Architecture: Single-channel comparator with integrated latch functionality
• Output Logic Family: TTL-compatible output stage
• Supply Voltage Compatibility: Support for 5V ~ 10V single supply or ±2.5V ~ 5V dual supply operation
• Electrical Performance: Input offset voltage maximum of 4mV @ ±5V, input bias current maximum of 10µA @ ±5V, CMRR/PSRR specifications of 82.5dB and 80dB respectively
• Package Specification: 8-SOIC surface-mount package with 0.154" (3.90mm) width
• Environmental Compliance: ROHS3 compliance, MSL Level 1, operating temperature range -40°C ~ 85°C

Parts meeting all these criteria are classified as direct equivalents. The MAX903ESA+ itself represents the current production standard for this specification set.

Parameter Comparison

Engineering Selection Recommendations

The MAX903ESA+ is the specified part number for this application. Selection of equivalent parts must be based on:

• Product Status Alignment: Only parts with Active production status are suitable for new designs and ongoing production requirements
• Compliance Certification: ROHS3 compliance and MSL Level 1 rating ensure regulatory conformance and manufacturing process compatibility
• Package Compatibility: The 8-SOIC surface-mount package with specified dimensions must be maintained to ensure PCB layout and assembly process compatibility
• Electrical Specification Match: All electrical parameters including supply voltage range, input offset voltage, bias current, and frequency response characteristics must align with the specified values

When supply constraints occur, direct manufacturer equivalents from Analog Devices Inc./Maxim Integrated maintaining identical part specifications are the appropriate substitution path.

Frequently Asked Questions (FAQ)

Q: What defines a valid substitute for the MAX903ESA+?

A: A valid substitute must match all critical parameters: single-channel comparator with latch, TTL output, 5V ~ 10V or ±2.5V ~ 5V supply capability, 4mV maximum input offset voltage, 10µA maximum input bias current, 82.5dB CMRR and 80dB PSRR, 8-SOIC package, -40°C ~ 85°C operating range, ROHS3 compliance, and MSL Level 1 rating.

Q: Can parts with different package types substitute for the MAX903ESA+?

A: No. The 8-SOIC surface-mount package is a critical specification. Different package types alter PCB layout requirements, assembly processes, and thermal characteristics. Package substitution requires full design re-validation.

Q: Are there alternative comparator architectures that can replace the MAX903ESA+?

A: Substitution requires matching the integrated latch functionality and TTL output stage. Comparators without latch capability or with different output logic families do not meet the functional requirements and are not valid substitutes.

Q: What is the significance of the ROHS3 compliance and MSL Level 1 rating?

A: ROHS3 compliance ensures the part meets current environmental and regulatory standards for electronic components. MSL Level 1 indicates unlimited shelf life without moisture sensitivity concerns, simplifying inventory management and manufacturing processes.

Q: How should supply chain decisions be made when the MAX903ESA+ is unavailable?

A: Contact the manufacturer directly to confirm availability timelines and production status. Verify that any alternative source maintains identical electrical specifications, package configuration, and compliance certifications before design implementation.