MAX1243BESA Equivalent & Substitute Parts

Part Overview

The MAX1243BESA is a 10-bit Analog to Digital Converter (ADC) manufactured by Analog Devices Inc./Maxim Integrated, designed for single-ended input data acquisition applications. It features a Successive Approximation Register (SAR) architecture with an external reference, operating across a supply voltage range of 2.7V to 5.25V for both analog and digital domains. The device is packaged in an 8-SOIC surface mount configuration with a sampling rate of 73 kSPS.

The MAX1243BESA is classified as obsolete, which necessitates identification of equivalent substitute components for new designs or production continuity. Locating functionally compatible alternatives ensures design flexibility and supply chain resilience.

Substiute Parts

MAX1243BESA

Analog Devices Inc./Maxim IntegratedIn Stock: 1400MAX1243BESA Datasheet

Current PartRFQ

MAX1243BESA+

Analog Devices Inc./Maxim IntegratedIn Stock: 1219MAX1243BESA+ Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the MAX1243BESA is determined by strict equivalence across the following critical parameters:

• Resolution: 10-bit conversion capability
• Sampling Rate: 73 kSPS minimum performance
• Input Configuration: Single-ended input topology
• Communication Protocol: SPI serial interface
• Architecture: SAR-based conversion method
• Reference Input: External reference requirement
• Supply Voltage Ranges: 2.7V to 5.25V for both analog and digital supplies
• Package Type: 8-SOIC surface mount form factor
• Temperature Range: -40°C to 85°C operational limits

The MAX1243BESA+ qualifies as a direct substitute based on identical electrical specifications and mechanical compatibility across all parameters listed above.

Parameter Comparison

Engineering Selection Recommendations

The MAX1243BESA+ is the direct functional equivalent of the MAX1243BESA. Both devices share identical electrical and mechanical specifications across all critical parameters. The primary distinction is product lifecycle status: the MAX1243BESA is obsolete, while the MAX1243BESA+ maintains active production status.

For new designs or production continuity, the MAX1243BESA+ is the appropriate selection. This variant offers the additional advantage of ROHS3 compliance, whereas the original MAX1243BESA is non-compliant. Both devices maintain identical REACH and ECCN classifications.

Frequently Asked Questions (FAQ)

Q: Can MAX1243BESA+ directly replace MAX1243BESA in existing designs?

A: Yes. The MAX1243BESA+ is electrically and mechanically identical to the MAX1243BESA across all specified parameters, including resolution, sampling rate, supply voltage ranges, operating temperature, and 8-SOIC package configuration. No design modifications are required.

Q: What is the primary reason to transition from MAX1243BESA to MAX1243BESA+?

A: The MAX1243BESA is classified as obsolete, limiting long-term availability. The MAX1243BESA+ maintains active production status and provides ROHS3 compliance, ensuring supply chain continuity and regulatory alignment.

Q: Are there any differences in pin configuration or package dimensions?

A: No. Both devices use the 8-SOIC package with identical 0.154" (3.90mm) width and surface mount mounting type. Pin configuration and mechanical footprint are equivalent.

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

A: Yes. Both the MAX1243BESA and MAX1243BESA+ operate with analog and digital supply voltages of 2.7V to 5.25V and share the same -40°C to 85°C operating temperature range.

Q: What is the significance of the RoHS compliance difference?

A: The MAX1243BESA+ is ROHS3 compliant, while the MAX1243BESA is non-compliant. For applications subject to RoHS regulations or customer requirements, the MAX1243BESA+ is the required selection.