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MAX485EPA+

MAX485EPA+

Analog Devices / Maxim Integrated
RS-422/RS-485 Interface IC Low-Power, Slew-Rate-Limited RS-485/RS-4
279 in stock
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Overview

The MAX485EPA+ is a low-power transceiver for RS-485 and RS-422 communication. It features one driver and one receiver, designed to operate from a single 5V supply while minimizing power consumption. This specific EPA+ variant comes in a 8-pin plastic DIP package, making it a staple for through-hole prototyping and industrial maintenance.

Why Choose This Part

The device is slew-rate limited to minimize EMI and reduce reflections caused by improperly terminated cables. It features a low quiescent current (typically 300 microamps) and allows for up to 32 transceivers on a single bus.

Applications

RS-485/RS-422 Networks
Enables long-distance serial data transmission in high-noise environments common in industrial plants.
Industrial Control Systems
Used for linking PLCs, motor controllers, and HVAC systems over differential signaling pairs.
Prototyping and Education
The DIP-8 package allows for easy use on breadboards and through-hole PCBs without specialized soldering equipment.

Getting Started

To use the MAX485EPA+, connect VCC to 5V and GND to the common ground of your system. Interface the DI (Driver Input) and RO (Receiver Output) pins to your microcontroller UART, and use the DE and RE pins to toggle between transmit and receive modes. For breadboarding, ensure a 120-ohm termination resistor is placed across the A and B differential lines at each end of the bus.

Also Consider

MAX485CPA+ Analog Devices - The commercial temperature version (0C to +70C) of the same transceiver for less demanding environments.