MAX13487EESA+T

Drivers, Receivers, Transceivers Overview

The MAX13487EESA+T is a half-duplex RS-485-compatible transceiver manufactured by Analog Devices Inc./Maxim Integrated. It features one driver and one receiver with proprietary AutoDirection control, eliminating the need for separate driver-enable signals. The device includes hot-swap capability to prevent bus errors during power-up or live insertion. It operates on a +5V supply (4.75V to 5.25V) within an extended temperature range of -40°C to +85°C. The MAX13487E variant offers reduced slew-rate drivers for error-free transmission up to 500kbps, minimizing EMI and reflections. It supports up to 128 transceivers on the bus via 1/4-unit load receiver input impedance and provides ±15kV ESD protection on A/B pins.

Drivers, Receivers, Transceivers Feature Summary

• AutoDirection control architecture automatically manages driver and receiver states based on DI input and bus voltage.
• Hot-swap capability prevents false transitions on the bus during power-up or live board insertion.
• Reduced slew-rate drivers minimize electromagnetic interference and signal reflections caused by improper cable termination.
• Robust electrostatic discharge protection rated at ±15kV Human Body Model and IEC 61000-4-2 Air Gap Discharge.

Drivers, Receivers, Transceivers Applications

• Isolated RS-485 interfaces
• Utility meters
• Industrial controls
• Industrial motor drives
• Automated HVAC systems

Drivers, Receivers, Transceivers Procurement Notes

Verify the specific suffix 'T' indicates tape-and-reel packaging when sourcing. Confirm the component is the MAX13487E variant with slew-rate limiting, distinct from the MAX13488E. Ensure the ordering part number matches the required lead-free/RoHS compliance status indicated by the '+' designation. Cross-reference the manufacturer's current production status for availability.

Drivers, Receivers, Transceivers Selection Notes

Select this component for applications requiring simplified interface design through automatic direction control. Choose the MAX13487E over the MAX13488E if data rates are below 500kbps and minimized EMI is a priority. Ensure the system supports the required 1/4-unit load configuration to support up to 128 nodes. Verify that the operating environment falls within the specified -40°C to +85°C temperature range.

Drivers, Receivers, Transceivers Part Context

This device belongs to the MAX13487E/MAX13488E family of half-duplex transceivers designed for RS-485/RS-422 communication. It replaces standard transceivers by integrating AutoDirection logic, reducing the bill of materials in isolated designs. The SOIC-8 package allows for easy upgrades from non-ESD protected devices while maintaining pin compatibility.

Drivers, Receivers, Transceivers Replacement Considerations

MAX13488EESA+T serves as a high-speed alternative without slew-rate limiting. Standard RS-485 transceivers like the MAX485 require external direction control logic. Verify pinout compatibility and electrical characteristics before substituting with other manufacturers' equivalents.

Drivers, Receivers, Transceivers FAQ

How does the AutoDirection feature function?

The internal state machine monitors the DI input and the differential voltage between A and B. When DI is low, the driver is enabled. When DI goes high, the driver is briefly enabled then disabled, allowing pullup/pulldown resistors to set the idle bus state.

What is the maximum data rate for the MAX13487E?

The MAX13487E supports error-free data transmission up to 500kbps due to its reduced slew-rate drivers.

How many transceivers can be connected to the bus?

The 1/4-unit load receiver input impedance allows up to 128 transceivers to be connected on a single communication line.