MAX3291ESD Equivalent & Substitute Parts

Part Overview

The MAX3291ESD is a 1/1 transceiver IC designed for full-duplex RS422 and RS485 communication protocols, packaged in a 14-SOIC surface mount configuration. This component operates within a 4.75V to 5.25V supply voltage range and supports data rates up to 10 Mbps with a receiver hysteresis of 35 mV. The MAX3291ESD is classified as obsolete, making identification of equivalent and substitute parts essential for ongoing system support, design updates, and procurement continuity.

Substiute Parts

MAX3291ESD

Analog Devices Inc./Maxim IntegratedIn Stock: 3834MAX3291ESD Datasheet

Current PartRFQ

MAX3291ESD+

Analog Devices Inc./Maxim IntegratedIn Stock: 2294MAX3291ESD+ Datasheet

Parametric EquivalentRFQ

MAX3292ESD+

Analog Devices Inc./Maxim IntegratedIn Stock: 2207MAX3292ESD+ Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the MAX3291ESD is determined by strict alignment across the following critical parameters:

• Protocol support: RS422 and RS485
• Driver/Receiver configuration: 1/1
• Duplex mode: Full
• Receiver hysteresis: 35 mV
• Data rate capability: 10 Mbps
• Supply voltage range: 4.75V ~ 5.25V
• Operating temperature range: -40°C ~ 85°C
• Package type: 14-SOIC with identical physical dimensions
• Mounting type: Surface Mount

The substitute parts identified below meet all these electrical and mechanical parameters. Differences in product status and RoHS compliance are noted for procurement and regulatory considerations.

Parameter Comparison

Engineering Selection Recommendations

The MAX3291ESD+ and MAX3292ESD+ are direct parametric equivalents to the MAX3291ESD, meeting all electrical and mechanical specifications. Both substitute parts are classified as Active products, ensuring long-term availability and supply chain stability compared to the obsolete MAX3291ESD.

For new designs or system updates, MAX3291ESD+ or MAX3292ESD+ are preferred selections due to their Active product status and ROHS3 compliance. These parts satisfy modern regulatory requirements while maintaining full functional compatibility with existing MAX3291ESD implementations.

For legacy systems requiring the exact obsolete part number, MAX3291ESD inventory remains available. However, transition to an Active equivalent is recommended for future procurement cycles.

Frequently Asked Questions (FAQ)

Q: Can MAX3291ESD+ or MAX3292ESD+ be used as direct replacements for MAX3291ESD?

A: Yes. Both parts are parametric equivalents with identical electrical specifications (protocol, data rate, supply voltage, operating temperature, receiver hysteresis) and package configuration (14-SOIC surface mount). Pin-for-pin compatibility is maintained.

Q: What is the difference between MAX3291ESD+ and MAX3292ESD+?

A: Both parts meet all substitution criteria for MAX3291ESD. The primary difference is the base product number (MAX3291 versus MAX3292). Both are Active products with ROHS3 compliance and identical electrical and mechanical parameters.

Q: Why is RoHS compliance important for substitution?

A: RoHS compliance indicates adherence to environmental and regulatory standards. The MAX3291ESD is RoHS non-compliant, while MAX3291ESD+ and MAX3292ESD+ are ROHS3 compliant. For applications subject to regulatory requirements or customer specifications, ROHS3-compliant substitutes are necessary.

Q: Are there any packaging differences between the substitute parts?

A: All three parts use the 14-SOIC package with identical physical dimensions (0.154" width, 3.90mm). Packaging format differs (MAX3291ESD is unspecified; MAX3291ESD+ and MAX3292ESD+ are supplied in Tube), but the component footprint and mounting type remain unchanged.

Q: What is the product status significance?

A: MAX3291ESD is classified as Obsolete, indicating discontinued production and limited future availability. MAX3291ESD+ and MAX3292ESD+ are Active products with ongoing manufacturing and supply chain support, making them suitable for long-term system designs and procurement planning.