LTC489CN Datasheet PDF - Linear Technology

DESCRIPTION

●The LTC®488 and LTC489 are low power differential bus/line receivers designed for multipoint data transmission standard RS485 applications with extended common mode range (12V to –7V). They also meet the requirements of RS422.

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

●The receiver features three-state outputs, with the receiver output maintaining high impedance over the entire common mode range.

●The receiver has a fail-safe feature which guarantees a high output state when the inputs are left open.

●Both AC and DC specifications are guaranteed 4.75V to 5.25V supply voltage range.

●FEATURES

●■ Low Power: ICC = 7mA Typ

●■ Designed for RS485 or RS422 Applications

●■ Single 5V Supply

●■ –7V to 12V Bus Common Mode Range Permits ±7V

●   Ground Difference Between Devices on the Bus

●■ 60mV Typical Input Hysteresis

●■ Receiver Maintains High Impedance in Three-State or with the Power Off

●■ 28ns Typical Receiver Propagation Delay

●■ Pin Compatible with the SN75173 (LTC488)

●■ Pin Compatible with the SN75175 (LTC489)

●APPLICATIONS

●■ Low Power RS485/RS422 Receivers

●■ Level Translator