GENERAL DESCRIPTION

The ADM3485E is a 3.3 V, low power data transceiver with ±15 kV ESD protection, suitable for half-duplex communication on multipoint bus transmission lines. The ADM3485E is designed for balanced data transmission and complies with TIA/EIA standards RS­485 and RS-422. The ADM3485E is a half-duplex transceiver that shares differential lines and has separate enable inputs for the driver and the receiver.

FEATURES

TIA/EIA RS-485/RS-422 compliant

±15 kV ESD protection on RS-485 input/output pins

12 Mbps data rate

Half-duplex transceiver

Up to 32 nodes on the bus

Receiver open-circuit, fail-safe design

Low power shutdown current

Outputs high-Z when disabled or powered off

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

Thermal shutdown and short-circuit protection

Industry-standard 75176 pinout

8-lead narrow SOIC package

APPLICATIONS

Power/energy metering

Telecommunications

EMI-sensitive systems

Industrial control

Local area networks