MAX1247BEEE+ Equivalent & Substitute Parts

Part Overview

The MAX1247BEEE+ is a 12-bit Analog to Digital Converter (ADC) manufactured by Analog Devices Inc./Maxim Integrated, designed for data acquisition applications requiring SAR (Successive Approximation Register) architecture. This component operates as an active product with ROHS3 compliance and is available in 16-QSOP surface mount packaging. Alternative equivalent parts may be required due to inventory constraints, design flexibility, or application-specific performance requirements.

Substiute Parts

MAX1247BEEE+

Analog Devices Inc./Maxim IntegratedIn Stock: 3426MAX1247BEEE+ Datasheet

Current PartRFQ

MAX1247BEEE+

Analog Devices Inc./Maxim IntegratedIn Stock: 3426MAX1247BEEE+ Datasheet

DirectRFQ

MAX1247AEEE+

Analog Devices Inc./Maxim IntegratedIn Stock: 816MAX1247AEEE+ Datasheet

Parametric EquivalentRFQ

ADS7841E

Texas InstrumentsIn Stock: 20797ADS7841E Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the MAX1247BEEE+ is determined by the following critical parameters: 12-bit resolution, SAR architecture, SPI data interface, external reference type, and 16-SSOP package compatibility. Parts meeting these core specifications are classified as direct equivalents or parametric equivalents based on alignment with input channel configuration, sampling rate, supply voltage ranges, and operating temperature specifications.

Direct Equivalent: MAX1247BEEE+ (identical specifications across all parameters)

Parametric Equivalent: MAX1247AEEE+ (identical electrical and mechanical specifications; differs only in temperature grade classification and inventory availability)

Cross-Manufacturer Substitute: ADS7841E (Texas Instruments; meets core ADC specifications with variations in input channel count, sampling rate, and temperature range)

Parameter Comparison

Engineering Selection Recommendations

MAX1247AEEE+ is a direct parametric equivalent to MAX1247BEEE+ with identical electrical specifications and package form factor. Both parts maintain ROHS3 compliance and unlimited moisture sensitivity rating. Selection between these Analog Devices variants depends on inventory availability and temperature grade requirements within the -40°C to 85°C operating range.

ADS7841E (Texas Instruments) serves as a cross-manufacturer substitute when MAX1247 variants are unavailable. This part maintains 12-bit resolution, SAR architecture, SPI interface, and 16-SSOP packaging. Key differences include single-ended input configuration only (no differential support), higher sampling rate (200 kSPS versus 133 kSPS), restricted supply voltage ranges (2.7V ~ 3.6V or 5V discrete levels), and extended operating temperature to 125°C. The ADS7841E carries MSL 2 moisture sensitivity, requiring controlled storage conditions. Applications requiring differential input capability or the full 2.7V ~ 5.25V supply range must verify ADS7841E compatibility before substitution.

Frequently Asked Questions (FAQ)

Q: Can MAX1247AEEE+ directly replace MAX1247BEEE+ in existing designs?

A: Yes. Both parts share identical electrical specifications, package dimensions, and pin configuration. No circuit modifications are required for substitution within the specified -40°C to 85°C operating temperature range.

Q: What are the limitations of using ADS7841E as a substitute?

A: The ADS7841E supports single-ended inputs only and does not provide differential input capability. Supply voltage operation is restricted to 2.7V ~ 3.6V or 5V discrete levels, eliminating the continuous 2.7V ~ 5.25V range of MAX1247 devices. Designs requiring differential inputs or intermediate supply voltages (3.7V ~ 4.9V) cannot use ADS7841E without circuit redesign.

Q: Are all three parts pin-compatible?

A: All three parts use 16-SSOP packaging with identical physical dimensions (0.154" width, 3.90mm). Pin compatibility must be verified against specific application schematics, as functional pin assignments may differ between manufacturers.

Q: What is the impact of different sampling rates on system design?

A: MAX1247 variants operate at 133 kSPS, while ADS7841E operates at 200 kSPS. Higher sampling rate does not require design changes but may provide improved performance in applications requiring faster conversion cycles. Existing designs based on 133 kSPS timing remain functional with ADS7841E.

Q: How do moisture sensitivity levels affect component handling?

A: MAX1247BEEE+ and MAX1247AEEE+ carry MSL 1 (unlimited shelf life without moisture control). ADS7841E carries MSL 2, requiring storage in controlled humidity environments and limiting shelf life to one year. Procurement and inventory management procedures must account for this difference.

Q: Are all substitute parts ROHS3 compliant?

A: Yes. MAX1247BEEE+, MAX1247AEEE+, and ADS7841E all maintain ROHS3 compliance and REACH unaffected status, meeting environmental regulatory requirements for industrial and commercial applications.