ADM485EARZ-REEL7

5V,2.5MBPS半双工RS-485/RS-422收发器

GENERAL DESCRIPTION

The ADM485E/ADM487E/ADM1487E are 5 V, low power data transceivers with ±15 kV ESD protection suitable for half duplex communication on multipoint bus transmission lines. They are designed for balanced data transmission and comply with Telecommunication Industry Association/Electronics Industries Association TIA/EIA standards RS-485 and RS-422. The ADM487E and ADM1487E have a 1/4 unit load receiver input impedance that allows up to 128 transceivers on a bus, whereas the ADM485E allows up to 32 transceivers on a bus. Because only one driver is enabled at any time, the output of a disabled or power-down driver is three-stated to avoid overloading the bus.

FEATURES

  TIA/EIA RS-485/RS-422 compliant

  ESD protection on RS-485 I/O pins

  ±15 kV human body model HBM

  Data rates

     ADM487E: 250 kbps

     ADM485E/ADM1487E: 2.5 Mbps

  Half-duplex

  Reduced slew rates for low EMI

  Common-mode input range: −7 V to +12 V

  Thermal shutdown and short-circuit protection

  8-lead SOIC packages

  ADM487EW qualified for automotive applications

APPLICATIONS

  Energy/power metering

  Lighting systems

  Industrial control

  Telecommunications

  Security systems

  Instrumentation