DS481TM

The DS481TM RS-485 transceiver is a high-performance solution that meets the TIA/EIA RS-485 Multipoint Standard, ensuring reliable communication in industrial applications. Notable features include low power consumption with a sleep mode reducing ICC to 0.2 μA, guaranteed full load output voltage, and a wide -7V to +12V common-mode input voltage range. With TRI-STATE outputs, AC performance metrics, and a half-duplex flow-through pinout, the DS481TM offers flexibility and efficiency in multipoint communication. Additionally, its scalability, operating from a single 5V supply, and compatibility with up to 64 transceivers on the bus make it a versatile choice for complex network configurations. The transceiver prioritizes reliability with current-limiting and thermal shutdown for driver overload protection and operates within an industrial temperature range. Its compatibility with MAX481C and MAX481E ensures seamless integration into existing designs, making the DS481TM a robust and adaptable solution for demanding communication systems.

The DS481 is a low-power transceiver for RS-485 and RS-422 communication. The device contains one driver and one receiver. The drivers slew rate allows for operation up to 2.0 Mbps (see Applications Information).

The transceiver draws 200 μA of supply current when unloaded or 0.2 μA when in the automatic sleep mode. Sleep mode is activated by inactivity on the enables (DE and RE(1)). Holding DE =L and RE(1) =H for greater than 600 ns will enable the sleep mode. The DS481 operates from a single +5V supply.

The driver is short-circuit current limited and is protected against excessive power dissipation by thermal shutdown circuitry that places the driver outputs into TRI-STATE (High Impedance state) under fault conditions. The driver guarantees a minimum of 1.5V differential output voltage with maximum loading across the common mode range (VOD3).

The receiver has a failsafe feature that guarantees a logic-high output if the input is open circuit.

The DS481 is available in a surface mount package and is characterized for Industrial temperature range operation.

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