MAX3441EESA+

Overview

The MAX3441EESA+ is a fault-protected RS-485 transceiver manufactured by Analog Devices Inc./Maxim Integrated. It operates from a single +5V supply and supports data rates up to 10Mbps. The device features ±60V fault protection on the A and B bus lines, allowing it to withstand signal faults without damage. It includes true fail-safe receiver inputs that guarantee a logic-high output when inputs are open or shorted. On-chip ±15kV ESD protection eliminates the need for external components. The component utilizes an industry-standard pinout and is housed in an 8-pin SO package.

Feature Summary

• Integrated ±60V fault protection safeguards communication bus lines against voltage anomalies.
• Hot-swap circuitry prevents false transitions during initialization or connection to live backplanes.
• True fail-safe receiver inputs ensure a logic-high state under open, shorted, or idle line conditions.

Applications

• RS-422/RS-485 Communications
• Industrial Networks
• Telecommunications Systems
• HVAC Controls

Procurement Notes

Verify the specific suffix 'ES' corresponds to the 8-pin Small Outline (SO) package configuration required for your design. Confirm the '+' designation indicates lead-free and RoHS compliance status. Ensure the operating temperature range aligns with industrial specifications (-40°C to +85°C). Cross-reference the manufacturer part number with official distributor catalogs to validate authenticity and current availability status before finalizing procurement orders.

Selection Notes

Select this model specifically for applications requiring high-speed data transmission up to 10Mbps. Unlike slew-rate-limited variants, this device does not restrict transition speeds, making it suitable for faster network topologies. Verify that the system requires the standard DE/RE control interface rather than separate enable pins found in other family members. Ensure the application environment necessitates the integrated ±60V fault tolerance to reduce external protection costs.

Part Context

This component belongs to the MAX3440E–MAX3444E series of fault-protected transceivers. While sharing the same core architecture and pinout, the MAX3441E variant is distinguished by its support for higher data rates compared to the 250kbps limited models within the same family. It shares common protection features with siblings like the MAX3440E and MAX3442E but targets performance-critical serial communication environments.

Replacement Considerations

The MAX3443E serves as a functional equivalent offering identical electrical characteristics and speed capabilities. It differs primarily by providing separate Driver Enable (DE) and Receiver Enable (RE) pins instead of the combined DE/RE control used in the MAX3441E. Designers must account for this pin configuration difference when substituting one for the other in existing layouts.

FAQ

What is the maximum data rate supported by the MAX3441E?

The MAX3441E supports guaranteed data rates up to 10Mbps.

How does the device handle open or shorted receiver inputs?

It employs true fail-safe circuitry that guarantees a logic-high receiver output when the A and B inputs are open, shorted, or connected to an idle data line.

Is external ESD protection required for the A and B pins?

No, the device incorporates on-chip ±15kV ESD protection on the receiver inputs and driver outputs, eliminating the need for costly external protection devices.