MAX1242AESA+ Equivalent & Substitute Parts

Part Overview

The MAX1242AESA+ is a 10-bit analog-to-digital converter manufactured by Analog Devices Inc./Maxim Integrated, designed for single-ended input data acquisition applications. This SAR (Successive Approximation Register) architecture device operates across a 2.7V to 5.25V supply range and communicates via SPI interface. The part is currently in active production status with ROHS3 compliance and unlimited moisture sensitivity rating. Substitute parts are identified when design requirements necessitate alternative sourcing due to inventory constraints, lead time considerations, or equivalent performance specifications across the MAX1242 product family.

Substiute Parts

MAX1242AESA+

Analog Devices Inc./Maxim IntegratedIn Stock: 873MAX1242AESA+ Datasheet

Current PartRFQ

MAX1242AESA+

Analog Devices Inc./Maxim IntegratedIn Stock: 873MAX1242AESA+ Datasheet

DirectRFQ

MAX1242BESA+

Analog Devices Inc./Maxim IntegratedIn Stock: 1134MAX1242BESA+ Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the MAX1242AESA+ are identified based on strict parameter equivalence within the MAX1242 product family. The substitution criteria are defined by the following key parameters:

• 10-bit resolution
• 73 kSPS sampling rate
• Single-ended input configuration
• SPI serial data interface
• SAR architecture with integrated sample-and-hold
• 2.7V to 5.25V dual supply voltage range
• 8-SOIC surface mount package
• Operating temperature range of -40°C to 85°C
• External and internal reference capability

Parts meeting all these specifications are classified as parametric equivalents and may be substituted without circuit redesign or PCB layout modification.

Parameter Comparison

Engineering Selection Recommendations

Both MAX1242AESA+ and MAX1242BESA+ are active production devices with identical electrical and mechanical specifications. Selection between these parts may be based on:

• Inventory availability and lead time requirements
• Supply chain continuity and allocation status
• Cost considerations within equivalent performance parameters
• Compliance requirements: both parts maintain ROHS3 compliance and REACH unaffected status
• Moisture sensitivity level: both rated MSL 1 (unlimited), suitable for standard manufacturing and storage conditions

No performance degradation or functional compromise occurs when substituting between these parts, as all critical parameters remain constant.

Frequently Asked Questions (FAQ)

Q: Can MAX1242BESA+ be used as a direct replacement for MAX1242AESA+ in existing designs?

A: Yes. Both parts share identical electrical specifications, package configuration, and operating parameters. No circuit modifications or PCB layout changes are required.

Q: Are there differences in sampling performance between MAX1242AESA+ and MAX1242BESA+?

A: No. Both parts operate at 73 kSPS with identical 10-bit resolution and SAR architecture.

Q: Do both parts support the same supply voltage range?

A: Yes. Both MAX1242AESA+ and MAX1242BESA+ operate across 2.7V to 5.25V for analog and digital supplies.

Q: Is the 8-SOIC package identical for both parts?

A: Yes. Both parts use the same 8-SOIC package with 0.154" width (3.90mm), ensuring identical PCB footprint and mounting requirements.

Q: What is the significance of the "A" and "B" designations in these part numbers?

A: The letter designation indicates different manufacturing batches or revisions within the MAX1242 product line. Both maintain equivalent performance specifications and are interchangeable.

Q: Are there any compliance or certification differences between these parts?

A: No. Both parts carry identical ROHS3 compliance, REACH unaffected status, and MSL 1 (unlimited) ratings.

Q: Can these parts be mixed in the same production batch?

A: Yes. Since all electrical and mechanical parameters are identical, both parts may be used interchangeably within the same assembly without functional impact.