The LTC1483CN8#PBF is an ultralow power differential Line Transceiver designed for data transmission standard RS485 applications with extended common-mode range (-7 to 12V). It meets the requirements of RS422. The LTC1483 features output drivers with controlled slew rate, decreasing the EMI radiated from the RS485 lines and improving signal fidelity with mis-terminated lines. The CMOS design offers significant power savings over its bipolar counterparts without sacrificing ruggedness against overload or ESD damage. Typical quiescent current is only 80μA while operating and less than 1μA in shutdown. The driver and receiver feature three-state outputs, with the driver outputs maintaining high impedance over the entire common-mode range. Excessive power dissipation caused by bus contention or faults is prevented by a thermal shutdown circuit which forces the driver outputs into a high impedance state. I/O pins are protected against multiple ESD strikes of over ±10kV.
Controlled slew rate driver for reduced EMI
Thermal shutdown protection
Power up/down glitch-free driver outputs permit live insertion or removal of transceiver
Driver maintains high impedance in three-state or with power OFF
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