adm483ar-reel Analog Devices, Inc., adm483ar-reel Datasheet - Page 12

• Manufacturer Part Number: adm483ar-reel
• Description: 5 V Low Power, Slew-rate Limited Rs-485/rs-422 Transceiver
• Manufacturer: Analog Devices, Inc.

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.
Rev. 0 | Page 12 of 16
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.