MAX1487ESA

MAX1487ESA is an isolated, high-speed differential transceiver from Maxim Integrated designed for RS-485/RS-422 networks. It provides galvanic isolation between the local logic side (microcontroller, FPGA, etc.) and the differential bus, enabling safe operation in industrial and automotive environments with common-mode noise and fault tolerance.
Key points:
- Includes both driver and receiver for differential buses (RS-485/RS-422).
- Provides isolation to protect the host from high voltage transients and to meet safety standards.
- Built-in protections (ESD, fault protection) and fail-safe features to define a known state if inputs are open or shorted.
- Suitable for long cable runs and noisy environments; aimed at industrial/automotive applications.
- Offered by Maxim in an appropriate package/temperature range (ESA suffix details vary by revision).
For exact specifications (isolation voltage, data rate, supply requirements, pinout, and packaging), refer to the official MAX1487ESA datasheet. If you can share your operating conditions, I can help tailor the summary further.

Here are the typical features of MAX1487ESA (isolated RS-485/RS-422 transceiver):
- Isolated RS-485/RS-422 transceiver with galvanic isolation between bus and logic
- Half-duplex operation; 1/2-unit-load on the bus
- Data rate up to about 20 Mbps
- Fail-safe receiver: RO defined for open, shorted, or idle bus
- Wide single-supply operation: 3.0V to 5.5V
- TTL/CMOS-compatible input thresholds; DE/RE control pins
- Low quiescent current; protections for short-circuit and over-current
- ESD protection on A/B lines
- Extended temperature range: -40°C to +125°C (ESA grade)
- Compliance with RS-485/RS-422 standards and related industry specs
Note: exact voltage/iso rating and performance can vary by package and version; consult the datasheet for precise specs.

Pin count: 8 pins (DIP/SOIC-8).
Function: An RS-485/RS-422 transceiver (half‑duplex) with a driver and a receiver. Pins typically: DI (data in), RO (data out), DE (driver enable), RE (receiver enable), A and B (bus lines), Vcc, GND. Provides 3‑state outputs and failsafe behavior for differential signaling.

MAX1487ESA is manufactured by Maxim Integrated. Maxim Integrated is a global fabless semiconductor company that designs and sells analog and mixed-signal integrated circuits.

Maxim MAX1487ESA is a high-speed, low-power RS-485/RS-422 transceiver. It’s suited for robust half‑duplex, multi‑drop networks. Typical applications:
- Industrial automation and process control (PLC interfaces, remote I/O, motor control)
- Building automation (HVAC, lighting, security)
- Data acquisition and telemetry (remote sensors, smart meters)
- Instrumentation and control cabinets
- Any long-distance, EMI-prone RS-485/RS-422 communications

8-pin Small Outline Integrated Circuit (SOIC-8) package, RoHS-compliant (Pb-free).