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ADM3486EARZ-REEL7 参数 Datasheet PDF下载

ADM3486EARZ-REEL7图片预览
型号: ADM3486EARZ-REEL7
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内容描述: 3.3 V , 【 15千伏ESD保护,半双工和全双工, RS - 485 / RS -422收发器 [3.3 V, 【15 kV ESD-Protected, Half- and Full-Duplex, RS-485/RS-422 Transceivers]
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文件页数/大小: 20 页 / 536 K
品牌: AD [ ANALOG DEVICES ]
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3.3 V, ±15 kV ESD-Protected, Half- and
Full-Duplex, RS-485/RS-422 Transceivers
ADM3483E/ADM3486E/ADM3488E/ADM3490E/ADM3491E
FEATURES
TIA/EIA RS-485/RS-422 compliant
±15 kV ESD protection on RS-485 input/output pins
Data rates
ADM3483E/ADM3488E: 250 kbps
ADM3486E: 2.5 Mbps
ADM3490E/ADM3491E: 12 Mbps
Half- and full-duplex options
Up to 32 nodes on the bus
Receiver open-circuit, fail-safe design
Low power shutdown current
(ADM3483E/ADM3486E/ADM3491E only)
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 and 14-lead narrow SOIC packages
FUNCTIONAL BLOCK DIAGRAMS
V
CC
ADM3483E/
ADM3486E
RO
RE
DE
DI
D
06284-001
R
A
B
GND
Figure 1.
V
CC
ADM3488E/
ADM3490E
RO
R
A
B
APPLICATIONS
Power/energy metering
Telecommunications
EMI-sensitive systems
Industrial control
Local area networks
DI
D
Z
Y
06284-002
GND
Figure 2.
V
CC
GENERAL DESCRIPTION
The ADM3483E/ADM3486E/ADM3488E/ADM3490E/
ADM3491E are 3.3 V, low power data transceivers with
±15 kV ESD protection suitable for full- and half-duplex
communication on multipoint bus transmission lines. They
are designed for balanced data transmission, and they
comply with TIA/EIA standards RS­485 and RS-422. The
ADM3483E/ADM3486E are half-duplex transceivers that
share differential lines and have separate enable inputs for
the driver and receiver. The full-duplex ADM3488E/
ADM3490E/ADM3491E transceivers have dedicated
differential line driver outputs and receiver inputs. The
ADM3491E also features separate enable inputs for the
driver and receiver.
The devices have a 12 kΩ receiver input impedance,
which allows up to 32 transceivers on a bus. Because only
one driver should be enabled at any time, the output of a
disabled or powered-down driver is tristated to avoid
overloading the bus.
ADM3491E
RO
RE
DE
DI
D
Z
Y
06284-003
R
A
B
GND
Figure 3.
(continued on Page 3)
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
©2006 Analog Devices, Inc. All rights reserved.