±15 kV ESD Protected, Slew Rate
Limited, 5 V, RS-485 Transceiver
ADM483E
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
FUNCTIONAL BLOCK DIAGRAM
ADM483E
RO
RE
DE
DI
D
R
B
A
06012-001
Figure 1.
APPLICATIONS
Low power RS-485 systems
Electrically harsh environments
EMI sensitive applications
DTE-DCE interface
Packet switching
Local area networks
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.
Rev. A
Information furnished by Analog Devices is believed to be accurate and reliable. However, no
responsibility is assumed by Analog Devices for its use, nor for any infringements of patents or other
rights of third parties that may result from its use. Specifications subject to change without notice. No
license is granted by implication or otherwise under any patent or patent rights of Analog Devices.
Trademarks and registered trademarks are the property of their respective owners.
One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A.
Tel: 781.329.4700
www.analog.com
Fax: 781.461.3113 ©1997–2007 Analog Devices, Inc. All rights reserved.
AD [ ANALOG DEVICES ]
