ADM489ARZ-REEL

RS-422/RS-485 接口 IC Full Duplex RS-485 Transceiver I.C.

GENERAL DESCRIPTION

The ADM488 and ADM489 are low power, differential line transceivers suitable for communication on multipoint bus transmission lines. They are intended for balanced data transmission and comply with both Electronics Industries Association EIA RS-485 and RS-422 standards. Both products contain a single differential line driver and a single differential line receiver, making them suitable for full-duplex data transfer. The ADM489 contains an additional receiver and driver enable control.

FEATURES

  Meets EIA RS-485 and RS-422 standards

  250 kbps data rate

  Single 5 V ± 10% supply

  −7 V to +12 V bus common-mode range

  12 kΩ input impedance

  2 kV EFT protection meets IEC1000-4-4

  High EM immunity meets IEC1000-4-3

  Reduced slew rate for low EM interference

  Short-circuit protection

  Excellent noise immunity

  30 μA supply current

APPLICATIONS

  Low power RS-485 and RS-422 systems

  DTE-DCE interface

  Packet switching

  Local area networks

  Data concentration

  Data multiplexers

  Integrated services digital network ISDN