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