MAX3044EUE

Overview

The MAX3044EUE+ is a quad RS-485/RS-422 transmitter manufactured by Analog Devices Inc. under the Maxim Integrated brand, designed for digital data transmission over twisted-pair balanced lines. It operates on a single +5V supply and supports data rates up to 2.5 Mbps. The device features ±10kV ESD protection on all outputs and includes hot-swap capability to prevent false transitions during power-up or insertion. Packaged in a space-saving TSSOP-16 format, it serves as a low-power upgrade to industry-standard drivers like the SN75174.

Feature Summary

• Slew-rate limiting minimizes electromagnetic interference (EMI) and reduces signal reflections caused by improperly terminated cables.
• Hot-swap capability eliminates false data transitions when inserting the device into a live bus or powering up the system.
• Outputs are protected against electrostatic discharge up to ±10kV via the Human Body Model.

Applications

• Industrial control systems requiring robust communication over twisted-pair lines
• Building automation networks utilizing RS-485 or RS-422 protocols
• Data acquisition systems needing high ESD protection and low static current

Procurement Notes

Verify the specific suffix of the ordered part number against the datasheet to confirm package type and temperature range. Ensure the component matches the required RS-485/RS-422 standard specifications before integration. Cross-reference the manufacturer's latest documentation for any pinout or electrical characteristic updates.

Selection Notes

Select this component when a quad driver with 2.5 Mbps speed and ±10kV ESD protection is required. It is suitable for applications needing hot-swap functionality and low static current operation. Compare against the MAX3040 series if lower data rates suffice, or the MAX3042B series for higher speeds up to 20 Mbps.

Part Context

This device belongs to the MAX3040–MAX3045 family of 5V quad transmitters. These components are designed to be pin-compatible replacements for legacy drivers such as the 'SN75174 and 'DS26LS31C, offering improved ESD performance and lower power consumption while maintaining standard interface compatibility.

Replacement Considerations

The MAX3040EUE+ offers similar functionality but is limited to 250 kbps. For higher speed requirements up to 20 Mbps, the MAX3042B series is appropriate. Verify that the replacement maintains the required TSSOP-16 package and +5V operating voltage.