LTC1480C 数据手册 ( 数据表 ) - Linear Technology

DESCRIPTION
The LTC®1480 is an ultralow power differential line transceiver which provides full RS485 compatibility while operating from a single 3.3V supply. It is designed for data transmission standard RS485 applications with extended common mode range (12V to –7V). It also meets the requirements of RS422 and features high speed operation up to 2.5Mb/s. The CMOS design offers significant power savings without sacrificing ruggedness against overload or ESD damage. Typical quiescent current is only 300µA while operating and 1µA in shutdown.

FEATURES
■ True RS485 from a Single 3.3V Supply
■ Low Power: ICC = 500µA Max with Driver Disabled
■ ICC = 600µA Max with Driver Enabled, No Load
■ 1µA Quiescent in Shutdown Mode
■ –7V to 12V Common Mode Range Permits ±7V Ground Difference Between Devices on the Data Line
■ 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 the Power Off
■ Up to 32 Transceivers on the Bus
■ 50ns Typical Driver Propagation Delays with 10ns Skew
■ Pin Compatible with the LTC485
■ Available in 8-Lead DIP and SO Packages

APPLICATIONS
■ Battery-Powered RS485/RS422 Applications
■ Low Power RS485/RS422 Transceiver
■ Level Translator