MAX3045BEWE+

Overview

The MAX3045BEWE+ 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 Wide SO package.

Feature Summary

• Hot-swap capability prevents erroneous data transfer during board insertion or power-up sequences.
• High robustness against electrostatic discharge with ±10kV Human Body Model protection on all outputs.
• Immunity to severe electrical fast transient bursts meeting IEC 1000-4-4 standards.
• Low-power shutdown mode significantly reduces current consumption when transmitters are disabled.

Applications

• Telecommunications equipment
• Industrial motor control systems
• Hand-held equipment requiring robust interface protection
• Industrial PLCs
• Networking applications

Procurement Notes

Verify the component status as the datasheet indicates it may be obsolete or discontinued. Confirm availability through authorized distributors or stockists. Ensure the ordering suffix matches the required package type and temperature grade. Check for RoHS compliance documentation if required by specific manufacturing standards.

Selection Notes

Select this component for designs requiring high-speed differential transmission up to 20Mbps with strong noise immunity. It serves as a pin-compatible upgrade to industry-standard parts like SN75174 and DS26LS31C. Consider the wide SO package for space-constrained PCB layouts while maintaining thermal performance within the specified industrial temperature range.

Part Context

This part belongs to the MAX3040–MAX3045 family of 5V quad RS-485/RS-422 transmitters. The 'E' suffix denotes an extended temperature range of -40°C to +85°C. The 'W' indicates the 16-pin Wide SO package. The '+' suffix typically signifies lead-free/RoHS compliance, though verification against the specific manufacturer's current labeling conventions is recommended.

Replacement Considerations

Pin-compatible replacements include the MAX3040, MAX3041, MAX3042B, MAX3043, and MAX3044, depending on the required data rate. Industry standard equivalents such as SN75174 and DS26LS31C can also be used, provided their speed and protection specifications meet the design requirements.