MAX3293AUT+

Overview

The MAX3293AUT+T is a low-power, high-speed transmitter for RS-485/RS-422 communication operating from a single +3.3V supply. It contains one differential transmitter with a maximum data rate of 250kbps and slew-rate limiting to minimize EMI. The device draws 5mA when unloaded and 1µA in shutdown mode (DE = GND). It features hot-swap circuitry, short-circuit current limiting, and thermal shutdown. The output level is guaranteed at +1.5V with a standard 54Ω load. It operates over an automotive temperature range of -40°C to +125°C and is housed in a 6-pin SOT23 package.

Feature Summary

• Slew-rate limited operation minimizes electromagnetic interference and reduces reflections caused by improperly terminated cables.
• Integrated hot-swap input structure prevents false transitions on the data cable during circuit initialization or connection to a live backplane.
• Driver protection includes short-circuit current limiting and thermal-shutdown circuitry to guard against excessive power dissipation.

Applications

• RS-485/RS-422 Communications
• Telecom Equipment
• Automotive Systems
• Industrial Control

Procurement Notes

Verify the component authenticity through official manufacturer channels or authorized distributors. Confirm that the ordering suffix matches the specific variant requirements, as designations like 'T' indicate tape-and-reel packaging. Ensure compliance with RoHS standards and check for any regional distribution restrictions before finalizing procurement plans.

Selection Notes

Select this component for applications requiring low-power RS-485/RS-422 transmission with minimal electromagnetic interference. The MAX3293 is suitable where data rates up to 250kbps are sufficient and slew-rate limiting is desired to mitigate signal reflections. Verify compatibility with the +3.3V supply voltage and ensure the 6-pin SOT23 package fits the board layout constraints.

Part Context

The MAX3293 is part of the MAX3293/MAX3294/MAX3295 family of low-power transmitters designed for RS-485/RS-422 communication. While the MAX3295 supports higher speeds up to 20Mbps without slew-rate limiting, the MAX3293 offers controlled edge rates for reduced EMI. All variants share the same compact 6-pin SOT23 package and operate from a single +3.3V supply.

Replacement Considerations

MAX3294AUT+T provides similar functionality with a 2.5Mbps data rate and slew-rate limiting. MAX3295AUT+T offers 20Mbps speed but lacks slew-rate limiting. Both are compatible alternatives within the same family, sharing the same package and supply voltage requirements.