MAX487ESA

The MAX487ESA is an 8-pin Maxim RS-485/RS-422 transceiver (extended-temperature variant) that provides a bidirectional differential driver and receiver for serial data over twisted-pair networks. It is a stand-alone interface device—not a controller—so it pairs with a microcontroller’s UART to enable long-distance serial communication.
Key features (typical):
- Single-supply operation (5V) for both driver and receiver
- DE (drive enable) and RE (receiver enable) control with DI (input) and RO (output)
- Robust differential RS-485/RS-422 signaling with fail-safe receiver (ensures a known output when the bus is idle/open/shorted)
- Compact 8-pin package (ESA variant implies an extended-temperature option)
- Low power consumption suitable for industrial environments
Typical applications:
- Industrial control networks, building automation, and instrumentation
- Anywhere RS-485/RS-422 differential communication is required with a microcontroller
Note: The ESA suffix indicates the package/temperature variant. For exact electrical specs and pinout, consult the MAX487ESA datasheet.

Key features of MAX487ESA (RS-485/RS-422 transceiver, 8-pin package):
- Half-duplex RS-485/RS-422 transceiver
- 1/8 unit-load, supports up to 32 nodes on the bus
- Single-supply operation: 4.75 V to 5.25 V
- One driver and one receiver with DI/DE and RO/RE control
- A and B differential bus pins (2-wire interface)
- 3-state outputs for easy bus sharing
- Failsafe receiver (RO goes high when inputs are open/idle/shorted)
- Wide input common-mode range (-7 V to +12 V) for robust bus operation
- Industrial temperature variant (ESA) in an 8-pin package
Optional note: Exact data rates and additional protections are specified in the datasheet; typical maximum data rate is in the multi-Mbps range for MAX487 family.

MAX487ESA comes in an 8-pin surface-mount SOIC (SO-8) package.

- Pin count: 8 pins (8-pin package, e.g., SOIC/DIP).
- Function: One-channel RS-485/RS-422 transceiver (half‑duplex) with differential bus pins A/B, data input (DI), data output (RO), and control pins DE and /RE, plus Vcc and GND.

Manufacturer: Maxim Integrated Products (now part of Analog Devices, Inc., ADI).
What kind of company: A fabless semiconductor company that designs and markets analog and mixed-signal integrated circuits. (Now under Analog Devices, a global semiconductor company.)

MAX487ESA is a low‑power RS-485/RS-422 transceiver. Common applications:
- Industrial automation and factory networks (multi-point RS-485)
- Building automation, HVAC, and sensor networks
- Remote telemetry and data acquisition systems
- Industrial instrumentation and test/measurement equipment
- Point-to-point or multi-drop links between microcontrollers, hosts, and DSPs