参数资料
型号: ADM2484EBRWZ-REEL7
厂商: Analog Devices Inc
文件页数: 1/16页
文件大小: 0K
描述: IC TXRX RS485 ISO W/ESD 16SOIC
标准包装: 400
类型: 收发器
驱动器/接收器数: 1/1
规程: RS422,RS485
电源电压: 3 V ~ 3.6 V
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 W
包装: 带卷 (TR)
配用: EVAL-ADM2484EEBZ-ND - BOARD EVAL FOR ADM2484
500 kbps, ESD Protected, Half-/Full-Duplex,
iCoupler, Isolated RS-485 Transceiver
Data Sheet
Rev. D
Information furnished by Analog Devices is believed to be accurate and reliable. However, no
responsibilityis assumedbyAnalogDevicesforitsuse,norforanyinfringementsof patentsorother
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
2008–2014 Analog Devices, Inc. All rights reserved.
FEATURES
Isolated, RS-485/RS-422 transceiver, configurable as half- or
full-duplex
±15 kV ESD protection on RS-485 input/output pins
500 kbps data rate
Complies with ANSI TIA/EIA RS-485-A-1998 and
ISO 8482: 1987(E)
Suitable for 5 V or 3.3 V operation (VDD1)
High common-mode transient immunity: >25 kV/μs
True fail-safe receiver inputs
256 nodes on the bus
Thermal shutdown protection
Safety and regulatory approvals
UL recognition
5000 V rms isolation voltage for 1 minute per UL1577
VDE certificate of conformity
DIN V VDE V 0884-10 (VDE V 0884-10): 2006-12
Reinforced insulation, VIORM = 849 VPEAK
CSA Component Acceptance Notice #5A
IEC 60950-1: 380 V rms (reinforced)
Operating temperature range: 40°C to +85°C
Wide body, 16-lead SOIC package
APPLICATIONS
Isolated RS-485/RS-422 interfaces
Industrial field networks
INTERBUS
Multipoint data transmission systems
FUNCTIONAL BLOCK DIAGRAM
ADM2484E
G
A
L
V
ANI
C
I
S
O
L
A
T
IO
N
VDD1
GND1
VDD2
GND2
Y
Z
TxD
DE
A
B
RxD
RE
06
98
4-
0
01
Figure 1.
GENERAL DESCRIPTION
The ADM2484E is an isolated data transceiver with ±15 kV
ESD protection suitable for high speed, half- or full-duplex
communication on multipoint transmission lines. For half-
duplex operation, the transmitter outputs and receiver inputs
share the same transmission line. Transmitter Output Pin Y
links externally to Receiver Input Pin A, and Transmitter
Output Pin Z links externally to Receiver Input Pin B.
Designed for balanced transmission lines, the ADM2484E
complies with ANSI TIA/EIA RS-485-A-1998 and ISO 8482:
1987(E). The device employs Analog Devices, Inc., iCoupler
technology to combine a 3-channel isolator, a three-state
differential line driver, and a differential input receiver into a
single package.
The differential transmitter outputs and receiver inputs feature
electrostatic discharge circuitry that provides protection up to
±15 kV using the human body model (HBM). The logic side of
the device can be powered with either a 5 V or a 3.3 V supply,
whereas the bus side requires an isolated 3.3 V supply.
The device has current-limiting and thermal shutdown features
to protect against output short circuits and situations where bus
contention causes excessive power dissipation.
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