MAX3045BESE+T

Overview

The MAX3045BESE+T is a quad RS-485/RS-422 transmitter manufactured by Analog Devices Inc./Maxim Integrated. It operates from a single +5V supply and supports data rates up to 20Mbps. The device features ±10kV ESD protection (Human Body Model) and ±4kV Electrical Fast Transient/Burst immunity per IEC 1000-4-4. It includes hot-swap capability to prevent false transitions during power-up or insertion. Operating temperature range is -40°C to +85°C, housed in a 16-pin Narrow SO package.

Feature Summary

• Hot-swap capability prevents erroneous data transfer during board insertion or power-up sequences.
• Robust electromagnetic compatibility with ±10kV HBM ESD protection and ±4kV IEC 1000-4-4 EFT immunity.
• Low-power operation with 1mA typical supply current and 2nA shutdown mode consumption.
• Pin-compatible with industry-standard 'SN75174 and 'DS26LS31C devices.

Applications

• Telecommunications equipment
• Industrial motor control systems
• Transmitter for ESD-sensitive applications
• Hand-held equipment
• Industrial PLCs

Procurement Notes

Verify the specific ordering suffix '+T' corresponds to tape-and-reel packaging if required for automated assembly. Confirm the 'E' suffix indicates the extended industrial temperature range of -40°C to +85°C. Ensure the 'SE' designation matches the narrow SOIC-16 physical footprint requirements of the target PCB layout.

Selection Notes

Select this component when high-speed data transmission up to 20Mbps is required on RS-485 or RS-422 networks. It is suitable for environments requiring significant ESD and electrical fast transient immunity without external protection components. Consider pin-compatible alternatives like the MAX3042B if lower data rates suffice, or verify compatibility with standard receivers such as the MAX3093E/MAX3095.

Part Context

This part belongs to the MAX3040–MAX3045 family of 5V quad transmitters designed for twisted-pair balanced lines. The MAX3045 variant specifically targets the highest speed within the family at 20Mbps. It serves as a low-power upgrade to legacy interface standards, offering enhanced protection features while maintaining backward compatibility with existing system architectures.

Replacement Considerations

The MAX3045BEWE+T offers identical electrical specifications but utilizes a Wide SO-16 package instead of the Narrow SO-16. Pinout compatibility remains consistent across the TSSOP, Narrow SO, and Wide SO variants within the same speed grade.