MAX1487EESA

MAX1487EESA is Maxim Integrated’s differential RS-485/RS-422 transceiver (driver + receiver). It interfaces a logic microcontroller to a multi-drop RS-485/RS-422 bus by converting TTL/CMOS signals to a balanced A/B pair and back. Key features typically include driver/receiver enable (three-state), a fail-safe receiver (defined output on open/short/bus idle), low quiescent current, and robust ESD protection. It operates from a single supply in the 3.3V–5V family and supports standard RS-485/RS-422 signaling with common fault tolerance. The EESA suffix denotes a specific package and temperature/lead-free variant; check the datasheet for exact electrical specs, package type, and operating temperature. Typical applications include industrial automation, building automation, data acquisition, PLCs, and any RS-485/RS-422 network.

- Pin count: 8 pins (8-pin package, e.g., SOIC/TSOP depending on variant).
- Function: Single-channel RS-485/RS-422 differential transceiver for half-duplex communication. Provides DI (data in) to drive A/B lines, RO (data out) from the receiver, A/B differential bus pins, and control pins DE (driver enable) and RE (receiver enable), plus Vcc and GND. Includes standard failsafe behavior when the bus is idle or open.

Manufacturer: Maxim Integrated (the Maxim brand, now part of Analog Devices).
Kind of company: A US-based semiconductor company that designs and sells analog and mixed-signal integrated circuits (ADI now owns the Maxim brand).

Typical applications for MAX1487EESA:
- Industrial automation and PLC/SCADA networks
- Building automation, energy metering and smart-grid systems
- Remote telemetry and data acquisition
- Long-distance multi-point RS-485/RS-422 serial networks
- Automotive/industrial equipment requiring galvanic isolation
- Medical instrumentation (isolation-compliant designs)
- Test, measurement, and rugged outdoor equipment
Note: It is a galvanically isolated RS-485/RS-422 transceiver suitable for harsh environments and multi-point networks.

SOIC-8 package. (8-pin small-outline package; RoHS lead-free variant)