MAX977EEE+ Equivalent & Substitute Parts

Part Overview

The MAX977EEE+ is a dual comparator IC manufactured by Analog Devices Inc./Maxim Integrated, packaged in 16-QSOP bulk format. This device is classified as obsolete, making equivalent substitute parts necessary for new designs and production continuity. The MAX977 base product line has been discontinued, requiring engineers to identify functionally compatible alternatives that maintain electrical and mechanical compatibility with existing circuit requirements.

Substiute Parts

MAX977EEE+

Analog Devices Inc./Maxim IntegratedIn Stock: 826MAX977EEE+ Datasheet

Current PartRFQ

ALD2303ASAL

Advanced Linear Devices Inc.In Stock: 980ALD2303ASAL Datasheet

MFR RecommendedRFQ

ALD2303SAL

Advanced Linear Devices Inc.In Stock: 1109ALD2303SAL Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the MAX977EEE+ are qualified based on the following criteria derived from the provided parameters:

• Device Category: Linear comparator function
• Package Compatibility: Surface mount 8-SOIC package (0.154", 3.90mm width)
• Electrical Classification: General purpose comparator with CMOS, NMOS, open-drain, and TTL output types
• Supply Voltage Range: 3V ~ 10V single supply or ±1.5V ~ 5V dual supply
• Element Count: Dual comparator configuration (2 elements)
• Compliance Standards: ROHS3 compliant, EAR99 classification, MSL 1 rating
• Operating Temperature: 0°C ~ 70°C industrial range

The ALD2303SAL and ALD2303ASAL from Advanced Linear Devices Inc. meet these substitution criteria as active, production-qualified alternatives.

Parameter Comparison

Engineering Selection Recommendations

ALD2303ASAL is the primary substitute for MAX977EEE+ applications. This part maintains active production status, ROHS3 compliance, and EAR99 classification matching the original device. The ALD2303ASAL offers superior input offset voltage specification (1mV @ 5V) and lower quiescent current (40µA) compared to the ALD2303SAL variant, providing improved performance margins in precision comparator circuits.

ALD2303SAL serves as an alternative substitute with identical compliance certifications and supply voltage compatibility. This variant specifies higher input offset voltage (4mV @ 5V) and elevated quiescent current (100µA), suitable for applications with relaxed precision requirements.

Both ALD2303 variants are REACH unaffected and maintain MSL 1 moisture sensitivity rating, ensuring compatibility with standard PCB assembly and storage protocols. The transition from 16-QSOP to 8-SOIC packaging requires PCB layout modification but does not affect electrical functionality for dual comparator applications.

Frequently Asked Questions (FAQ)

Q: Why is the MAX977EEE+ obsolete and what makes ALD2303 variants suitable replacements?

A: The MAX977EEE+ has reached end-of-life status. The ALD2303SAL and ALD2303ASAL are qualified substitutes because they provide dual comparator functionality with matching supply voltage ranges (3V ~ 10V, ±1.5V ~ 5V), identical output type configurations (CMOS, NMOS, open-drain, TTL), and equivalent compliance certifications (ROHS3, EAR99, MSL 1).

Q: What is the primary difference between ALD2303SAL and ALD2303ASAL?

A: The ALD2303ASAL provides tighter input offset voltage specification (1mV @ 5V versus 4mV @ 5V) and lower quiescent current (40µA versus 100µA). Select ALD2303ASAL for precision applications; ALD2303SAL for general-purpose implementations.

Q: Does the package change from 16-QSOP to 8-SOIC affect circuit performance?

A: Package change requires PCB layout modification but does not affect electrical performance. Both packages are surface mount with identical thermal and electrical characteristics for dual comparator operation. Verify PCB footprint compatibility before design implementation.

Q: Are both substitute parts available in production quantities?

A: Yes. ALD2303SAL inventory: 1078 pcs. ALD2303ASAL inventory: 947 pcs. Both are active production parts from Advanced Linear Devices Inc.

Q: Do the substitute parts maintain the same compliance and regulatory classifications?

A: Yes. Both ALD2303 variants are ROHS3 compliant, EAR99 classified, and carry MSL 1 moisture sensitivity rating, matching the original MAX977EEE+ certifications.