Quad Low Power RS485 Driver

The LTC®487 is a low power differential bus/line driver designed for multipoint data transmission standard RS485 applications with extended common mode range –7V to +12V. It also meets RS422 requirements.

The CMOS design offers significant power savings over its bipolar counterpart without sacrificing ruggedness against overload or ESD damage.

The driver features 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.

Both AC and DC specifications are guaranteed from 0°C to 70°C (Commercial), –40°C to +85°C (Industrial) and over the 4.75V to 5.25V supply voltage range.

Applications

* Low Power RS485/RS422 Drivers

* Level Translator

* Very Low Power: ICC = 110μA Typ

* Designed for RS485 or RS422 Applications

* Single 5V Supply

* –7V to +12V Bus Common Mode Range Permits ±7V GND Difference Between Devices on the Bus

* Thermal Shutdown Protection