MAX1243ACSA+ Equivalent & Substitute Parts

Part Overview

The MAX1243ACSA+ is a 10-bit Analog to Digital Converter (ADC) manufactured by Analog Devices Inc./Maxim Integrated, designed for single-ended input data acquisition applications. This SAR (Successive Approximation Register) architecture device operates with external voltage reference and communicates via SPI interface. The part is currently in active production status with 689 units available in stock. Alternative models within the MAX1243 series are available to support supply chain flexibility and inventory optimization.

Substiute Parts

MAX1243ACSA+

Analog Devices Inc./Maxim IntegratedIn Stock: 747MAX1243ACSA+ Datasheet

Current PartRFQ

MAX1243ACSA+

Analog Devices Inc./Maxim IntegratedIn Stock: 747MAX1243ACSA+ Datasheet

DirectRFQ

MAX1243BCSA+

Analog Devices Inc./Maxim IntegratedIn Stock: 1154MAX1243BCSA+ Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the MAX1243ACSA+ is determined by strict equivalence across the following critical parameters:

• Resolution: 10 bits
• Sampling Rate: 73 kSPS
• Input Configuration: 1 single-ended input
• Data Interface: SPI
• Architecture: SAR with external reference
• Supply Voltage Range: 2.7V ~ 5.25V (both analog and digital)
• Operating Temperature: 0°C ~ 70°C
• Package: 8-SOIC form factor
• Compliance: ROHS3, MSL 1

The MAX1243BCSA+ meets all these parameters and qualifies as a parametric equivalent. Both parts share the same base product number (MAX1243) and are manufactured by Analog Devices Inc./Maxim Integrated.

Parameter Comparison

Engineering Selection Recommendations

Both MAX1243ACSA+ and MAX1243BCSA+ are active production parts with full ROHS3 compliance and unlimited moisture sensitivity level rating. Selection between these parts should be based on inventory availability and supply chain requirements. The MAX1243BCSA+ offers higher stock levels (1073 units) compared to MAX1243ACSA+ (689 units), making it suitable for applications requiring extended lead time assurance. Both parts meet identical electrical, mechanical, and environmental specifications, ensuring direct functional interchangeability in 8-SOIC surface mount applications requiring 10-bit SAR ADC functionality with SPI interface.

Frequently Asked Questions (FAQ)

Q: Can MAX1243BCSA+ replace MAX1243ACSA+ in existing designs?

A: Yes. Both parts are parametrically equivalent across all critical specifications including resolution, sampling rate, supply voltage, operating temperature, package type, and interface protocol. Direct substitution is supported without design modification.

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

A: No. Both MAX1243ACSA+ and MAX1243BCSA+ carry identical ROHS3 compliance status and MSL 1 (Unlimited) moisture sensitivity rating.

Q: What determines substitution eligibility for MAX1243 series ADCs?

A: Substitution is valid when parts maintain identical specifications across resolution (10 bits), sampling rate (73 kSPS), input configuration (1 single-ended), data interface (SPI), supply voltage range (2.7V ~ 5.25V), operating temperature (0°C ~ 70°C), and 8-SOIC package form factor.

Q: Are both parts suitable for the same PCB layout and thermal management?

A: Yes. Both parts use identical 8-SOIC (0.154", 3.90mm Width) surface mount packaging, requiring no changes to PCB footprint, routing, or thermal design.

Q: What is the difference between the part number suffixes (A vs B)?

A: The suffix designation reflects manufacturing lot or temperature grade classification within the MAX1243 product line. Both A and B grade variants operate within the specified 0°C ~ 70°C temperature range and meet all electrical parameters.