GENERAL DESCRIPTION

The ADM483E is a 5 V, low power data transceiver with ±15 kV ESD protection suitable for half-duplex communication on multipoint bus transmission lines. The ADM483E is designed for balanced data transmission and complies with TIA/EIA Standards RS-485 and RS-422, which allow up to 32 transceivers on a bus.
The ADM483E has a low current shutdown mode in which it consumes only 0.1 μA.
Because only one driver is enabled at any time, the output of a disabled or power-down driver is three-stated to avoid overloading the bus.
Drivers are short-circuit current-limited and are protected against excessive power dissipation by thermal shutdown circuitry that places their outputs into a high impedance state. The receiver input has a fail-safe feature that guarantees a logic high output if the input is open circuit.
The ADM483E is fully specified over the industrial temperature ranges and is available in 8-lead SOIC_N packages.

FEATURES

±15 kV ESD protection
250 kbps data rate
Reduced slew rate for low EM interference
Single 5 V ± 10% supply
−7 V to +12 V bus common-mode range
Up to 32 nodes on the bus
Receiver open-circuit, fail-safe design
Short-circuit protection
36 μA supply current
0.1 μA shutdown current

APPLICATIONS
Low power RS-485 systems
Electrically harsh environments
EMI sensitive applications
DTE-DCE interface
Packet switching
Local area networks