The ADM4855ARZ is an integrated circuit (IC) component designed by Analog Devices. It is a robust, RS-485/RS-422 transceiver that provides reliable data transfer over long distances, making it suitable for industrial and commercial applications.
One of the key features of the ADM4855ARZ is its support for a wide range of data rates, ranging from 250 kbps to 20 Mbps. This flexibility allows for efficient data transmission in various scenarios. Additionally, the IC supports half-duplex communication, meaning it can transmit and receive data on a single pair of wires.
To ensure reliable data transmission, the ADM4855ARZ incorporates a fail-safe feature that guarantees a logic high receiver output when the input is shorted or left open. This helps prevent data corruption in fault conditions. Furthermore, the IC includes overvoltage protection, which safeguards against damage caused by voltage spikes or electrostatic discharge.
Another notable feature of the ADM4855ARZ is its low power consumption, making it suitable for battery-powered or energy-efficient devices. It operates from a supply voltage ranging from 3.0 V to 5.5 V and typically consumes only 300 μA of current in shutdown mode. This low power operation extends battery life in portable applications.
The ADM4855ARZ also offers a driver output stage that is capable of driving up to 2500 pF of capacitance, allowing the IC to efficiently drive long communication lines
