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)