MAX3490ESA

Overview

The MAX3490ESA is a low-power, full-duplex transceiver designed for RS-485 and RS-422 communication applications. It operates from a single 3.3V supply without requiring a charge pump. The device integrates one driver and one receiver within an 8-pin SOIC package. It supports data transmission rates up to 10Mbps with slew-rate limiting to minimize electromagnetic interference. The unit functions reliably across an extended temperature range of -40°C to +85°C.

Feature Summary

• Full-duplex operation supporting both RS-485 and RS-422 protocols
• Slew-rate limited outputs for errorless data transmission
• Interoperable with standard +5V logic levels
• Low-current shutdown mode capability

Applications

• Industrial automation bus networks
• Building automation control systems
• Multi-drop communication lines

Procurement Notes

Verify the specific suffix against official Analog Devices documentation to confirm package type and temperature grade. Ensure the component matches the required RoHS compliance status for the target assembly process. Confirm availability through authorized distributors as lead times vary by region.

Selection Notes

Select this model when full-duplex communication is required alongside RS-485 or RS-422 compatibility. It is suitable for designs needing 10Mbps speeds with reduced signal ringing. Consider alternatives if half-duplex operation suffices or if lower power consumption in standby is critical.

Part Context

This component belongs to the Maxim Integrated MAX34xx series of low-power transceivers. It shares architectural similarities with the MAX3483, MAX3485, and MAX3491 but provides distinct full-duplex functionality compared to the half-duplex variants in the same family.

Replacement Considerations

MAX3490EESA+ serves as a verified parameter-equivalent alternative within the same product line.