GENERAL DESCRIPTION
The ADM3485E is a low power differential line transceiver designed to operate using a single +3.3 V power supply. Low power consumption makes it ideal for power sensitive applications. It is suitable for communication on multipoint bus transmission lines. Internal protection against electrostatic discharge (ESD) and electrical fast transient (EFT) allows operation in electrically harsh environments.
It is intended for balanced data transmission and complies with both EIA Standards RS-485 and RS-422. It contains a differential line driver and a differential line receiver, and is suitable for half duplex data transfer.
The input impedance is 19 kΩ allowing up to 50 transceivers to be connected on the bus.

FEATURES
   Operates with +3.3 V Supply
   ESD Protection: 8 kV Meets IEC1000-4-2
   EFT Protection: 2 kV Meets IEC1000-4-4
   EIA RS-422 and RS-485 Compliant Over Full CM Range
   19 kΩ Input Impedance
   Up to 50 Transceivers on Bus
   20 Mbps Data Rate
   Short Circuit Protection
   Specified Over Full Temperature Range
   Thermal Shutdown
   Interoperable with 5 V Logic
   1 mA Supply Current
   2 nA Shutdown Current
   8 ns Skew

APPLICATIONS
   Telecommunications
   DTE-DCE Interface
   Packet Switching
   Local Area Networks
   Data Concentration
   Data Multiplexers
   Integrated Services Digital Network (ISDN)
   AppleTalk
   Industrial Controls