MAX3042BEUE+

Overview

The MAX3042BEUE+ is a quad RS-485/RS-422 transmitter designed for digital data transmission over twisted-pair balanced lines. It operates from a single +5V supply and supports data rates up to 20Mbps. The device features ±10kV Human Body Model ESD protection on all outputs 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. The component is available in a 16-pin TSSOP package with an operating temperature range of -40°C to +85°C.

Feature Summary

• Hot-swap capability prevents erroneous data transfer during board insertion or power-up sequences.
• Outputs are protected against ±10kV electrostatic discharge (Human Body Model) and ±4kV electrical fast transients.
• Low-power shutdown mode reduces current consumption to 2nA when enabled inputs are deactivated.
• Pin-compatible with industry-standard 'SN75174, 'DS26LS31C, and LTC487 devices.

Applications

• Telecommunications equipment
• Industrial motor control systems
• Transmitter applications requiring ESD sensitivity
• Hand-held equipment
• Industrial PLCs

Procurement Notes

Verify the specific suffix BEWE indicates the industrial temperature grade (-40°C to +85°C) and the Wide SO package variant as listed in official documentation. Confirm RoHS compliance status through manufacturer datasheets. Ensure ordering details match the exact pinout requirements for the selected package type before procurement.

Selection Notes

Select this component for high-speed RS-485/RS-422 networks requiring 20Mbps data rates. It serves as a low-power upgrade to legacy drivers like the SN75174. Ensure compatibility with 5V quad differential line receivers such as the MAX3093E or MAX3095 for optimal system performance.

Part Context

This part belongs to the MAX3040–MAX3045 family of 5V quad RS-485/RS-422 transmitters. While other variants in the series offer lower data rates (250kbps or 2.5Mbps), the MAX3042B variant is specifically optimized for speeds up to 20Mbps. All members share similar ESD protection and hot-swap features.

Replacement Considerations

The MAX3042BEWE+ is pin-compatible with the 'SN75174, 'DS26LS31C, and LTC487. Verify that replacement parts support the required 20Mbps data rate and ±10kV ESD protection levels to maintain system integrity.