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                  Home > Interface and Driver Circuit
                  UTRS485 Datasheet
                  FAIL-SAFE, 10MBPS, RS-485 / RS-422 TRANSCEIVERS WITH ±15KV ESD-PROTECTED

                   
                   
                   
                  DESCRIPTION
                   
                  The UTC UTRS485 is a half-duplex transceiver designed for
                  RS-485 data bus network, which contains one transmitter and one
                  receiver. The UTC UTRS485 features a fail-safe receiver, which
                  guarantees the receiver to output high when the receiver inputs are
                  open, short or idle.  
                  The UTC UTRS485 also features a hot-swap glitch free protection
                  circuits which guarantee outputs of both the transmitter and the
                  receiver in a high impedance state during the power up period. So that
                  the large short current from power to ground will be disable by glitch
                  free function, which will save the power and enhance the efficiency of
                  the power up.  
                  The UTC UTRS485 is optimized for signal rates up to 2.5Mbps
                  with differential voltage of 2.3V. The UTC UTRS485 also has the
                  thermal shutdown function when the temperature is over 150 and
                  the protection of the current limitation in the transmitter to protect the
                  itself from the damage by the system-fault conditions during normal
                  operation.
                   
                   
                  FEATURES
                   
                  * Meet the requirements of the EIA/TIA-485 standards
                  * 5.0V single power supply
                  * 1µA low-current shutdown mode
                  * True fail-safe receiver while maintaining EIA/TIA-485 compatibility
                  * Hot-swap glitch free protection on control inputs
                  * Up to 256 transceivers on the bus
                  * Driver short circuit current limit
                  * Thermal shutdown for overload protection  
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