MAX3042BEUE+T

Overview

The MAX3042BEUE+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 Stressing per IEC 1000-4-4. It includes hot-swap capability to eliminate false transitions during power-up or insertion. Operating temperature range is -40°C to +85°C, with typical propagation delay of 23ns and operating supply current of 1mA.

Feature Summary

• Hot-swap capability prevents erroneous data transfer during board insertion or power-up sequences.
• Robust electromagnetic immunity with ±10kV ESD protection and ±4kV fast transient burst tolerance.
• Low-power operation with 1mA active supply current and ultra-low 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 component authenticity through official manufacturer channels or authorized distributors. Confirm the specific suffix '+T' indicates tape-and-reel packaging if required for automated assembly processes. Ensure the ordering code matches the exact temperature grade and package variant needed for the design.

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 demanding strong ESD and electrical fast transient immunity. Consider the TSSOP package for space-constrained designs compared to wider SOIC options.

Part Context

This part belongs to the MAX3040–MAX3045 family of 5V quad transmitters. While other family members offer lower data rates like 250kbps or 2.5Mbps, the MAX3042B variant specifically targets higher speed applications. It serves as a low-power upgrade to legacy interface drivers in industrial and telecom sectors.

Replacement Considerations

Public confirmed substitutes include MAX3045BEUE+T within the same family offering identical pinouts and functionality. Legacy compatible replacements such as SN75174 or DS26LS31C may be used but lack the enhanced ESD protection and hot-swap features.