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MAX491 500µA, Full-Duplex RS-485 Transceiver

Maxim-Dallas

Create a design and simulate using EE-Sim® tools: The MAX481, MAX483, MAX485, MAX487–MAX491, and MAX1487 are low-power transceivers for RS-485 and RS-422 communication. Each part contains one driver and one receiver.

* Low Power Consumption Minimizes Thermal Dissipation, Reducing System Cost * 120µA to 500µA Quiescent Current * Shutdown Current of 0.1µA * Single 5V Supply Voltage * Slew-Rate-Limited Drivers (MAX483/MAX487/MAX488 and MAX489) * Up to 250kbps Data Rate * Unlimited Drivers: Up to 2.5Mbps Data Rate * Integrated Protection Enhances System Robustness * Short Circuit Current Limited Driver * Integrated Thermal Shutdown * Receiver Fail-Safe for Input Open Circuit * Guarantees Logic High * 1/4 Unit Loading (MAX487/ MAX1487 only) Allows Up to 128 Devices on a Single Bus * 48kΩ Receiver Input Resistance

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