MAX1481EUB+

Drivers, Receivers, Transceivers Overview

The MAX1481EUB+ is a software-selectable, half- or full-duplex RS-485/RS-422 transceiver housed in a 10-pin µMAX package. It operates from a single +5V supply with a typical quiescent current of 300µA and features a low-power shutdown mode reducing current to 0.1µA. The device includes one driver and one receiver with a 1/8-unit-load input impedance, supporting up to 256 transceivers on the bus. It provides slew-rate limiting for error-free transmission up to 250kbps, output short-circuit protection, thermal shutdown, and a fail-safe receiver.

Drivers, Receivers, Transceivers Feature Summary

• Software-selectable half- or full-duplex operation via the H/F pin
• Slew-rate limited drivers minimize EMI and reduce reflections
• Low-power shutdown mode reduces supply current to 0.1µA
• Fail-safe receiver guarantees logic-high output if inputs are open

Drivers, Receivers, Transceivers Applications

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

Drivers, Receivers, Transceivers Procurement Notes

Verify the component matches the exact part number MAX1481EUB+. Confirm the suffix 'E' indicates the industrial temperature range of -40°C to +85°C and the '+ ' denotes lead-free compliance. Ensure the package is the 10-pin µMAX variant. Cross-reference the manufacturer details with Analog Devices / Maxim Integrated specifications.

Drivers, Receivers, Transceivers Selection Notes

Select this component for space-constrained designs requiring RS-485/RS-422 connectivity. It is suitable for applications needing reduced electromagnetic interference due to its slew-rate limiting feature. Choose this part when a low-power shutdown mode is required to extend battery life in portable devices. Verify that the 250kbps data rate meets the system requirements.

Drivers, Receivers, Transceivers Part Context

The MAX1481EUB+ belongs to the MAX148x family of high-speed transceivers designed for RS-485 and RS-422 standards. This series offers compact packaging solutions compared to traditional discrete implementations. The MAX1481 specifically focuses on full-duplex operation with slew-rate limiting, distinguishing it from the non-limited MAX1484 and the selectable duplex MAX1485/MAX1486 variants within the same package.

Drivers, Receivers, Transceivers Replacement Considerations

The MAX1481 is functionally equivalent to industry-standard parts like the MAX491 and 75180. When replacing these legacy components, ensure the new part supports the required voltage levels and interface protocols. Verify that the replacement maintains the same package dimensions and pinout configuration to fit existing board layouts.