MAX3042BCSE+T

Overview

The MAX3042BCSE+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. The component is housed in a 16-pin Narrow SO package, operates within a temperature range of 0°C to +70°C, and draws 1mA of operating supply current.

Feature Summary

• Hot-swap capability prevents erroneous data transfer during board insertion or power-up sequences
• Integrated ±10kV ESD protection on all transmitter outputs for robust handling reliability
• High immunity to electrical fast transient/burst stress meeting IEC 1000-4-4 standards
• Low-power shutdown mode reduces consumption to 2nA when disabled

Applications

• Telecommunications equipment
• Industrial motor control systems
• Transmitter applications requiring ESD sensitivity
• Hand-held industrial equipment
• Industrial PLC networks

Procurement Notes

Verify the specific ordering suffix against official manufacturer documentation to confirm package type and temperature rating. Ensure compatibility with existing PCB footprints for the 16-pin Narrow SO configuration. Confirm that the +5V supply voltage aligns with system requirements before integration.

Selection Notes

Select this component for designs requiring high-speed differential transmission up to 20Mbps over twisted-pair lines. It serves as a pin-compatible upgrade to industry-standard parts like the SN75174. Consider the narrow SO package for space-constrained layouts where thermal derating must be evaluated at elevated temperatures.

Part Context

This part belongs to the MAX3040–MAX3045 family of quad transmitters designed for digital data transmission over balanced lines. The MAX3042B variant specifically targets higher data rates compared to the slew-rate limited 250kbps and 2.5Mbps models in the same series.

Replacement Considerations

Pin-compatible replacements include the 'SN75174, 'DS26LS31C, and LTC487. Verify functional equivalence regarding enable logic and output characteristics before substitution.