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
