ADM483AR 查看數據表（PDF） - Analog Devices

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ADM483AR

5 V Low Power, Slew-Rate Limited RS-485/RS-422 Transceiver

Analog Devices 

ADM483

THERMAL SHUTDOWN

The ADM483 contains thermal shutdown circuitry that

protects the part from excessive power dissipation during

fault conditions. Shorting the driver outputs to a low

impedance source can result in high driver currents. The

thermal sensing circuitry detects the increase in die temp-

erature and disables the driver outputs. The thermal sensing

circuitry is designed to disable the driver outputs when a die

temperature of 150°C is reached. As the device cools, the

drivers are re-enabled at 140°C.

RECEIVER OPEN-CIRCUIT FAIL-SAFE

The receiver input includes a fail-safe feature that guarantees

a logic high on the receiver when the inputs are open circuit

or floating.

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