MAX13485EESA+T

Drivers, Receivers, Transceivers Overview

The MAX13485EESA+T is a half-duplex RS-485/RS-422 transceiver manufactured by Analog Devices Inc. (Maxim Integrated). It operates on a single +5V supply with a voltage range of 4.75V to 5.25V and draws 4.5mA during operation. The device features one driver and one receiver, supporting data rates up to 500kbps with slew-rate limiting. It includes fail-safe circuitry, hot-swap capability, and ±15kV ESD protection on I/O pins. Operating temperatures range from -40°C to +85°C, and it is housed in an 8-pin SO package.

Drivers, Receivers, Transceivers Feature Summary

• Slew-rate limited drivers minimize electromagnetic interference and reduce signal reflections for error-free transmission.
• Fail-safe receiver guarantees a logic-high output when inputs are open or shorted, ensuring bus stability.
• Hot-swap capability prevents false transitions on the bus during live insertion or power-up sequences.
• High input impedance allows connection of up to 128 transceivers on a single communication line.

Drivers, Receivers, Transceivers Applications

• Utility meters
• Industrial controls
• Industrial motor drives
• Automated HVAC systems

Drivers, Receivers, Transceivers Procurement Notes

Verify the component authenticity through official manufacturer channels or authorized distributors. Confirm the specific ordering suffix matches the required packaging format. Ensure the lead time and availability align with project schedules before finalizing procurement decisions.

Drivers, Receivers, Transceivers Selection Notes

Select this component for applications requiring robust RS-485 communication with reduced electromagnetic emissions. The integrated slew-rate limiting makes it suitable for long cable runs or environments with strict EMI requirements. Verify that the system operates within the specified +5V supply constraints and temperature range.

Drivers, Receivers, Transceivers Part Context

This part belongs to the MAX13485E/MAX13486E family of half-duplex transceivers. While the MAX13486E variant supports higher speeds up to 16Mbps without slew-rate limiting, the MAX13485E focuses on minimizing EMI at lower data rates. Both share identical pinouts and core protection features.

Drivers, Receivers, Transceivers Replacement Considerations

The MAX13486EESA+ serves as a high-speed alternative within the same package. Other compatible devices include the MAX13487EESA+T which offers automatic direction control. Verify electrical compatibility and pinout alignment before substitution.

Drivers, Receivers, Transceivers FAQ

How does the fail-safe feature function?

The receiver outputs a logic-high state if the differential input voltage is greater than -50mV, which occurs when inputs are open, shorted, or when all transmitters are disabled on a terminated bus.

What is the purpose of the hot-swap capability?

It eliminates false transitions on the bus during power-up or live-insertion by holding the driver disabled and receiver enabled until the internal timer resets after power stabilization.

Why is slew-rate limiting included?

Reduced slew-rate drivers minimize electromagnetic interference (EMI) and reduce reflections caused by improperly terminated cables, allowing error-free transmission up to 500kbps.