Low Power RS485 Interface Transceiver LTC485IS8#TRPBF
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FEATURES TYPICAL APPLICATION
■ Low Power: ICC = 300µA Typ ■ Designed for RS485 Interface 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 Transceiver ■ Driver Maintains High Impedance in Three-State or with the Power Off ■ Combined Impedance of a Driver Output and Receiver Allows Up to 32 Transceivers on the Bus ■ 70mV Typical Input Hysteresis ■ 30ns Typical Driver Propagation Delays with 5ns Skew ■ Pin Compatible with ±60V Protected LT1785 and 52Mbps LTC1685
APPLICATIONS
■ Low Power RS485/RS422 Transceiver ■ Level Translator
DESCRIPTION
The LTC® 485 is a low power differential bus/line trans- ceiver designed for multipoint data transmission standard RS485 applications with extended common mode range (12V to –7V). It also meets the requirements of RS422. PACKAGE/ORDER INFORMATION The CMOS design offers significant power savings over its bipolar counterpart without sacrificing ruggedness against overload of ESD damage.
The driver and receiver feature 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.
The receiver has a fail-safe feature which guarantees a high output state when the inputs are left open.
The LTC485 is fully specified over the commercial and extended industrial temperature range. |
Product Tags: integrated circuit ic integrated circuit components |
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