MAX1485EUB+T

Drivers, Receivers, Transceivers Overview

The MAX1485EUB+T is a software-selectable, half-/full-duplex RS-485/RS-422 transceiver housed in a 10-pin µMAX package. It features one driver and one receiver with slew-rate limiting for error-free data transmission up to 250kbps. The device operates from a single +5V supply (4.75V to 5.25V) and draws 300µA of no-load supply current. It supports up to 256 transceivers on the bus due to its 1/8-unit-load receiver input impedance. The E suffix indicates an extended temperature range of -40°C to +85°C.

Drivers, Receivers, Transceivers Feature Summary

• Software-selectable half-/full-duplex operation via the H/F pin
• Slew-rate limited drivers minimize EMI and reduce reflections
• Compact 10-pin µMAX package for space-constrained designs
• Fail-safe receiver guarantees logic-high output if inputs are open

Drivers, Receivers, Transceivers Applications

• Low-power RS-422/RS-485 communications
• Hand-held and battery-powered equipment
• Transceivers for EMI-sensitive applications
• Industrial-control local area networks

Drivers, Receivers, Transceivers Procurement Notes

Verify the component matches the exact part number MAX1485EUB+T, ensuring the 'E' suffix confirms the -40°C to +85°C operating range. Confirm the '+T' suffix indicates tape-and-reel packaging. Cross-reference the manufacturer marking against Analog Devices Inc./Maxim Integrated specifications to ensure authenticity before integration into production systems.

Drivers, Receivers, Transceivers Selection Notes

Select this component when software-selectable duplex modes are required in a minimal footprint. It is suitable for applications needing reduced electromagnetic interference through slew-rate limiting at speeds up to 250kbps. Ensure the design utilizes a single +5V supply and requires support for up to 256 nodes on the communication bus.

Drivers, Receivers, Transceivers Part Context

This device belongs to the MAX1481/MAX1484/MAX1485/MAX1486 family of high-speed transceivers. Unlike the fixed-duplex MAX1481 and MAX1484, the MAX1485 offers configurable half-/full-duplex functionality. It replaces larger discrete solutions or multiple transceivers previously needed for selectable duplex operations in RS-485/RS-422 networks.

Drivers, Receivers, Transceivers Replacement Considerations

The MAX1486CUB/T or MAX1486EUB/T serves as a functional substitute offering identical software-selectable duplex control but with unrestricted slew rates supporting speeds up to 12Mbps. Designers must account for the difference in maximum data rate and EMI characteristics when swapping between these variants.