参数资料
型号: ADM2486BRW
厂商: Analog Devices Inc
文件页数: 1/20页
文件大小: 0K
描述: IC TXRX RS-485 ISOLATED 16-SOIC
标准包装: 47
系列: iCoupler®
类型: 收发器,隔离式
驱动器/接收器数: 1/1
规程: RS422/RS485
电源电压: 3V,5V
安装类型: 表面贴装
封装/外壳: 16-SOIC(0.295",7.50mm 宽)
供应商设备封装: 16-SOIC
包装: 管件
其它名称: Q1893052
High Speed, Half-Duplex iCoupler
Isolated RS-485 Transceiver
Data Sheet
Rev. E
Information furnished by Analog Devices is believed to be accurate and reliable. However, no
responsibilityisassumedbyAnalogDevicesforitsuse,norforanyinfringementsofpatentsorother
rightsofthirdpartiesthatmayresultfromitsuse.Specificationssubjecttochangewithoutnotice.No
license is granted by implication or otherwise under any patent or patent rights of Analog Devices.
Trademarksandregisteredtrademarksarethepropertyoftheirrespectiveowners.
One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A.
Tel: 781.329.4700
2004–2013 Analog Devices, Inc. All rights reserved.
FEATURES
Half-duplex, isolated RS-485 transceiver
PROFIBUS compliant
ANSI EIA/TIA 485-A and ISO 8482: 1987(E) compliant
20 Mbps data rate
5 V or 3 V operation (VDD1)
High common-mode transient immunity: >25 kV/μs
Isolated DE status output
Receiver open-circuit, fail-safe design
Thermal shutdown protection
50 nodes on bus
Safety and regulatory approvals
UL recognition—2500 Vrms for 1 minute per UL 1577
CSA Component Acceptance Notice #5A
IEC 609501 800 Vrms (basic), 400 Vrms (reinforced)
VDE Certificate of Conformity
DIN V VDE 0884-10 (VDE V 0884-10): 2006-12
VIORM = 560 V peak
Operating temperature range: 40°C to +85°C
Wide body, 16-lead SOIC package
APPLICATIONS
Isolated RS-485/RS-422 interfaces
PROFIBUS networks
Industrial field networks
Multipoint data transmission systems
GENERAL DESCRIPTION
The ADM2486 differential bus transceiver is an integrated,
galvanically isolated component designed for bidirectional
data communication on multipoint bus transmission lines. It
is designed for balanced transmission lines and complies with
ANSI EIA/TIA-485-A and ISO 8482: 1987(E).
The device employs Analog Devices iCoupler technology to
combine a 3-channel isolator, a three-state differential line
driver, and a differential input receiver into a single package.
The logic side of the device is powered with either a 5 V or a
3 V supply, and the bus side uses an isolated 5 V supply.
FUNCTIONAL BLOCK DIAGRAM
RTS
VDD1
DE
GND1
A
B
VDD2
GND2
GALVANIC
ISOLATION
LOGIC
SIDE
TxD
RxD
BUS
SIDE
04604-001
RE
PV
ADM2486
Figure 1.
The ADM2486 driver has an active-high enable feature. The
driver differential outputs and the receiver differential inputs
are connected internally to form a differential input/output port
that imposes minimal loading on the bus when the driver is
disabled or when VDD1 or VDD2 = 0 V. Also provided is an
active-high receiver disable feature that causes the receive
output to enter a high impedance state.
The device has current-limiting and thermal shutdown features
to protect against output short circuits and situations where bus
contention may cause excessive power dissipation. The part is
fully specified over the industrial temperature range and is
available in a 16-lead, wide body SOIC package.
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