MAX889RESA-T Equivalent & Substitute Parts

Part Overview

The MAX889RESA-T is a charge pump switching regulator IC manufactured by Analog Devices Inc./Maxim Integrated, designed for negative voltage generation with adjustable output from -2.5V to -5.5V at 200mA output current. This component operates as a step-down topology with a fixed switching frequency of 500kHz and is housed in an 8-SOIC surface mount package.

The MAX889RESA-T is classified as obsolete product status. Identifying equivalent substitute parts is necessary for design continuity, procurement flexibility, and long-term supply chain management when the original part becomes unavailable or when transitioning to active product lines.

Substiute Parts

MAX889RESA-T

Analog Devices Inc./Maxim IntegratedIn Stock: 1092MAX889RESA-T Datasheet

Current PartRFQ

MAX889RESA+T

Analog Devices Inc./Maxim IntegratedIn Stock: 3881MAX889RESA+T Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the MAX889RESA-T is determined by strict alignment across the following critical parameters:

• Voltage specifications: Input range (2.7V–5.5V) and output range (-2.5V to -5.5V) must be identical
• Output current capability: 200mA minimum required
• Switching frequency: 500kHz fixed topology
• Package and pinout: 8-SOIC form factor with identical pin configuration
• Output configuration: Negative voltage generation
• Topology: Charge pump architecture
• Operating temperature: -40°C to 85°C range

The MAX889RESA+T meets all substitution criteria as a direct equivalent, differing only in packaging format (Tape & Reel versus individual unit packaging) and product status classification.

Parameter Comparison

Engineering Selection Recommendations

The MAX889RESA+T is the direct functional equivalent to the MAX889RESA-T. Both parts share identical electrical specifications, pinout, and package geometry, ensuring drop-in compatibility at the circuit level.

Selection between these parts should be based on:

Product Status: The MAX889RESA+T carries active product status, providing assured long-term availability and continued manufacturer support. The MAX889RESA-T is obsolete, indicating discontinued production and limited future supply.

Regulatory Compliance: The MAX889RESA+T meets ROHS3 compliance requirements, while the MAX889RESA-T is non-compliant. For applications subject to RoHS directives or customer specifications requiring RoHS certification, the MAX889RESA+T is the appropriate selection.

Packaging Considerations: The MAX889RESA+T is supplied in Tape & Reel format, standard for high-volume manufacturing and automated assembly. The MAX889RESA-T packaging format is not specified in the provided data. Tape & Reel packaging is suitable for pick-and-place equipment and reduces handling costs in production environments.

Frequently Asked Questions (FAQ)

Q: Can MAX889RESA+T replace MAX889RESA-T in existing designs?

A: Yes. Both parts are electrically and mechanically identical. The MAX889RESA+T provides the same voltage regulation performance, output current capability, and switching characteristics. No circuit modifications are required.

Q: What is the difference between MAX889RESA-T and MAX889RESA+T?

A: The parts differ in product status and packaging format. MAX889RESA-T is obsolete with unspecified packaging. MAX889RESA+T is active product supplied in Tape & Reel format and meets ROHS3 compliance.

Q: Are the pinouts identical between these parts?

A: Yes. Both parts use the 8-SOIC package with identical pin configuration. PCB layout and schematic connections require no modification.

Q: Which part should be specified for new designs?

A: The MAX889RESA+T should be specified for new designs. It offers active product status, ensuring availability and manufacturer support throughout the product lifecycle.

Q: Does packaging format affect electrical performance?

A: No. Tape & Reel packaging is a supply format only and does not affect electrical characteristics, performance, or reliability of the integrated circuit itself.

Q: Are there any temperature or frequency differences between these parts?

A: No. Both parts operate across the identical temperature range (-40°C to 85°C) and use the same 500kHz switching frequency.