MAX3031EESE+

Overview

The MAX3031EESE+ is a quad RS-422 transmitter from the MAX3030E–MAX3033E family, designed for digital data transmission over twisted-pair balanced lines. It operates on a single +3V to +3.6V supply with a maximum static current of 100µA. The device supports a guaranteed 2Mbps baud rate and features slew-rate limiting to minimize EMI. It provides ±15kV ESD protection on outputs and includes hot-swap capability to prevent false transitions during power-up. Packaged in a 16-pin Narrow SOIC, it functions within an extended temperature range of -40°C to +85°C.

Feature Summary

• Slew-rate-limited 2Mbps data rate minimizes electromagnetic interference (EMI) and reduces reflections caused by improperly terminated cables.
• Hot-swap functionality prevents false transitions on the data cable during power-up or hot insertion by holding enable inputs low until stable operation is achieved.
• Outputs feature enhanced electrostatic discharge (ESD) protection rated at ±15kV using the Human Body Model, ensuring reliability during handling and assembly.

Applications

• Telecom backplanes
• V.11/X.21 interface circuits
• Industrial programmable logic controllers (PLCs)
• Motor control systems

Procurement Notes

Verify the specific suffix 'EESE' corresponds to the required operating temperature range (-40°C to +85°C) and the 16-pin Narrow SO package. Confirm that the '+T' reel option is not required if tube packaging is preferred. Ensure the design accounts for the global enable pin configuration unique to the MAX3031E variant compared to other family members.

Selection Notes

Select this component when a 2Mbps data rate with controlled slew rates is necessary to reduce signal reflections and EMI. Choose the MAX3031E over the MAX3030E/MAX3032E variants specifically for its slower transition times. Verify compatibility with industry-standard 26LS31 pinouts if replacing legacy components in existing designs.

Part Context

This part belongs to the MAX3030E–MAX3033E family of quad RS-422 transmitters. While electrically similar to the MAX3030E, the MAX3031E is distinguished by its 2Mbps slew-rate-controlled performance rather than the 20Mbps high-speed capability found in the MAX3030E and MAX3032E models.

Replacement Considerations

The MAX3031EESE+ serves as a direct pin-compatible upgrade to the industry-standard 26LS31 and SN75174 devices. When substituting these legacy parts, ensure the new design accommodates the lower static current consumption and verify that the hot-swap input behavior aligns with system power-up requirements.