MAX1487EESA+

Drivers, Receivers, Transceivers Overview

The MAX1487EESA+ is a low-power, half-duplex RS-485/RS-422 transceiver manufactured by Analog Devices Inc./Maxim Integrated. It integrates one driver and one receiver in an 8-pin SOIC package. The device supports data rates up to 2.5Mbps with an unrestricted slew rate. It operates on a single +5V supply (4.75V to 5.25V) and features ±15kV ESD protection on all pins without latchup. The receiver input has a quarter-unit-load impedance (48kΩ), allowing up to 128 transceivers on the bus. It includes thermal shutdown and short-circuit current limiting for the driver, and a fail-safe feature for the receiver.

Drivers, Receivers, Transceivers Feature Summary

• Provides ±15kV electrostatic discharge (ESD) protection on driver outputs and receiver inputs without latchup.
• Features a quarter-unit-load receiver input impedance enabling connection of up to 128 transceivers on the bus.
• Includes thermal shutdown circuitry that places driver outputs into a high-impedance state during excessive power dissipation.
• Offers fail-safe receiver functionality that guarantees a logic-high output if the input is open circuit.

Drivers, Receivers, Transceivers Applications

• Low-Power RS-485 Transceivers
• Low-Power RS-422 Transceivers
• Level Translators
• Transceivers for EMI-Sensitive Applications
• Industrial-Control Local Area Networks

Drivers, Receivers, Transceivers Procurement Notes

Verify the component authenticity through official manufacturer channels or authorized distributors. Confirm the specific ordering suffix matches the required temperature range and packaging format. Ensure compliance with RoHS directives as indicated in the product documentation. Cross-reference the datasheet revision to confirm pinout and electrical characteristics align with design requirements before procurement.

Drivers, Receivers, Transceivers Selection Notes

Select this component for applications requiring high-speed data transmission up to 2.5Mbps on multipoint bus lines. It is suitable for harsh environments due to its robust ESD protection and fault-tolerant features. Consider the 128-node bus capacity when designing networks requiring multiple devices. Ensure the system operates within the specified 4.75V to 5.25V supply voltage range and -40°C to +85°C temperature limits.

Drivers, Receivers, Transceivers Part Context

The MAX1487E belongs to the MAX481E/MAX483E/MAX485E/MAX487E–MAX491E/MAX1487E family of low-power transceivers designed for RS-485 and RS-422 communications. Unlike slew-rate-limited variants in the same series, the MAX1487E offers unrestricted driver slew rates to support higher data speeds. It shares functional compatibility with standard versions but adds enhanced ESD protection structures for improved reliability in demanding industrial settings.

Drivers, Receivers, Transceivers Replacement Considerations

The MAX487E is a compatible alternative within the same family but is limited to 250kbps data rates due to slew-rate limiting. For full-duplex requirements, consider the MAX488E or MAX490E series. Standard non-ESD protected versions like the MAX1487 are available for cost-sensitive applications where ESD resilience is less critical.