MAX845ESA Equivalent & Substitute Parts

Part Overview

The MAX845ESA is a Transformer Driver PMIC manufactured by Analog Devices Inc./Maxim Integrated, designed for PCMCIA applications in a surface-mount 8-SOIC package. This component operates as a power management integrated circuit with transformer driver functionality. The MAX845ESA is currently classified as obsolete, which necessitates identification of equivalent substitute parts for ongoing design requirements and component procurement.

Substiute Parts

MAX845ESA

Analog Devices Inc./Maxim IntegratedIn Stock: 3454MAX845ESA Datasheet

Current PartRFQ

MAX845ESA+

Analog Devices Inc./Maxim IntegratedIn Stock: 1997MAX845ESA+ Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the MAX845ESA is determined by strict equivalence across the following critical parameters:

• Identical base product number (MAX845 series)
• Matching package type (8-SOIC with 0.154" / 3.90mm width)
• Identical electrical specifications (2.5V ~ 6V supply voltage, 1.1mA supply current)
• Matching operating temperature range (-40°C ~ 85°C)
• Surface-mount configuration compatibility
• Transformer driver functional classification

The MAX845ESA+ qualifies as a direct substitute based on complete alignment with all electrical and mechanical parameters specified for the main part.

Parameter Comparison

Engineering Selection Recommendations

The MAX845ESA+ is the direct equivalent substitute for the MAX845ESA. Both parts share identical electrical specifications, package configuration, and functional classification. The primary distinction is product lifecycle status: the MAX845ESA is obsolete while the MAX845ESA+ maintains active production status.

For new designs or component replenishment, the MAX845ESA+ is the appropriate selection. This substitute provides continued access to the MAX845 transformer driver functionality with the added benefit of ROHS3 compliance, whereas the original MAX845ESA is RoHS non-compliant. Both parts maintain identical REACH and ECCN classifications (REACH Unaffected, EAR99).

Frequently Asked Questions (FAQ)

Q: Can the MAX845ESA+ be used as a direct replacement for the MAX845ESA in existing designs?

A: Yes. The MAX845ESA+ is electrically and mechanically identical to the MAX845ESA. Both parts operate within the same voltage range (2.5V ~ 6V), supply current specification (1.1mA), temperature range (-40°C ~ 85°C), and package configuration (8-SOIC). No circuit modifications are required for substitution.

Q: What is the difference between MAX845ESA and MAX845ESA+?

A: The parts are functionally equivalent. The primary differences are product status (MAX845ESA is obsolete; MAX845ESA+ is active) and RoHS compliance (MAX845ESA is non-compliant; MAX845ESA+ is ROHS3 compliant). Packaging differs in format: MAX845ESA uses standard packaging while MAX845ESA+ is supplied in tube packaging.

Q: Are there any compatibility concerns with the 8-SOIC package?

A: No. Both the MAX845ESA and MAX845ESA+ use identical 8-SOIC packaging (0.154" / 3.90mm width). PCB footprints, solder reflow profiles, and assembly processes remain unchanged between the two parts.

Q: Why is the MAX845ESA classified as obsolete?

A: The MAX845ESA has reached end-of-life status. The MAX845ESA+ represents the active production equivalent and is the recommended part for procurement and new designs.

Q: Does the ROHS3 compliance of MAX845ESA+ affect circuit performance?

A: No. ROHS3 compliance is a manufacturing and material specification that does not alter electrical performance, operating characteristics, or functional behavior. The parts remain electrically identical.