DESCRIPTION
The LTC®490 is a low power differential bus/line transceiver designed for multipoint data transmission standard RS485 applications with extended common mode range (12V to –7V). It also meets the requirements of RS422.

FEATURES
■ Low Power: ICC = 300µA Typical
■ 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
■ Thermal Shutdown Protection
■ Power-Up/-Down Glitch-Free Driver Outputs Permit Live Insertion or Removal of Package
■ Driver Maintains High Impedance with the Power Off
■ Combined Impedance of a Driver Output and Receiver Allows up to 32 Transceivers on the Bus
■ 70mV Typical Input Hysteresis
■ 28ns Typical Driver Propagation Delays with 5ns Skew for 2.5MB Operation
■ Pin Compatible with the SN75179
■ Available in 8-Lead PDIP and SO Packages

APPLICATIONS
■ Low Power RS485/RS422 Transceiver
■ Level Translator