MAX3042BCUE+T

Overview

The MAX3042BCUE+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 transfer rates up to 20Mbps. The device features ±10kV ESD protection (Human Body Model) and withstands ±4kV Electrical Fast Transient/Burst stress per IEC 1000-4-4. It includes hot-swap capability to prevent false transitions during power-up or insertion. Operating current is 1mA, with a shutdown mode consuming 2nA. It is housed in a 16-pin TSSOP package and functions within a temperature range of 0°C to +70°C.

Feature Summary

• Hot-swap capability eliminates false transitions on the data cable during power-up or hot insertion
• Outputs protected to ±10kV using the Human Body Model and withstand ±4kV per IEC 1000-4-4 Electrical Fast Transient/Burst Stressing
• Low-power shutdown mode consumes 2nA while operating supply current is 1mA
• Pin-compatible with industry-standard 'SN75174 and 'DS26LS31C

Applications

• Telecommunications Equipment
• Industrial Motor Control
• Transmitter for ESD-Sensitive Applications
• Hand-Held Equipment
• Industrial PLCs
• Networking

Procurement Notes

Verify the component authenticity by checking the manufacturer marking against official documentation. Confirm the specific suffix indicates the correct temperature grade and packaging type. Ensure the ordering information matches the required data rate specifications for your design. Cross-reference the datasheet revision to confirm pinout and electrical characteristics remain consistent with your schematic requirements.

Selection Notes

Select this component when high-speed data transmission up to 20Mbps is required over twisted-pair balanced lines. It serves as a low-power upgrade to legacy drivers, offering superior ESD immunity compared to standard alternatives. Use this part for applications requiring hot-swap functionality to protect bus integrity during board insertion. Ensure the system operates within the specified +5V supply voltage constraints.

Part Context

This device belongs to the MAX3040–MAX3045 family of 5V quad RS-485/RS-422 transmitters. The MAX3042B variant specifically targets higher data rates up to 20Mbps, distinguishing it from the slew-rate limited 2.5Mbps and 250kbps models in the same series. It is designed to work optimally with corresponding Maxim line receivers like the MAX3093E or MAX3095.

Replacement Considerations

The MAX3042BCUE+T is pin-compatible with the 'SN75174, 'DS26LS31C, and LTC487. These parts can be considered direct replacements if their electrical specifications meet the system's performance requirements.