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ADM3488AR

更新时间： 2024-11-18 19:42:23
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页数 文件大小 规格书
14页 526K
描述
IC LINE TRANSCEIVER, PDSO8, SOIC-8, Line Driver or Receiver

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中文翻译

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ADM3488AR 数据手册

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3.3V Slew Rate Limited,  
Half and Full Duplex  
Preliminary Technical Data  
ADM3483/ADM3485/ADM3488/ADM3490  
logic-high output if both inputs are open circuit. The ADM3488  
and ADM3490 feature full duplex communication, while the  
ADM3483 and ADM3485 are designed for half-duplex  
communication.  
The driver outputs are slew rate limited in order to reduce EMI  
and data errors caused by reflections from improperly  
terminated buses. Excessive power dissipation caused by bus  
contention or by output shorting is prevented with a thermal  
shutdown circuit.  
FEATURES  
EIA RS-485/RS-422 Compliant  
Data Rate Options  
ADM3483, ADM3488 – 250kbps  
ADM3485, ADM3490 – 10Mbps  
Half and Full Duplex Options  
Reduced Slew Rates for Low EMI  
2nA Supply Current in Shutdown Mode  
(ADM3483,ADM3485)  
Up to 32 Transceivers on a bus  
-7V to +12V Bus Common Mode Range  
Specified over –40°C to +85°C Temperature Range  
Available in 8-Lead SOIC  
The parts are fully specified over the commercial and industrial  
temperature ranges and all are available in 8-lead SOIC and the  
ADM3483 and the ADM3485 are also available in an 8-lead  
LFCSP packages.  
ADM3483/85 available in an 8-Lead LFCSP Package  
APPLICATIONS  
Low-Power RS-485 Applications  
EMI Sensitive Systems  
DTE-DCE Interfaces  
Industrial Control  
Packet Switching  
Local Area Networks  
Level Translators  
FUNCTIONAL BLOCK DIAGRAMS  
V
CC  
V
CC  
ADM3483/ADM3485  
R
ADM3488/ADM3490  
R
A
B
RO  
RO  
DI  
A
B
RE  
DE  
DI  
GENERAL DESCRIPTION  
The ADM3483, ADM3485, ADM3488 and ADM3490 are 3.3V,  
low-power transceivers for RS-485 and RS-422 communication.  
Each part contains one driver and one receiver. The ADM3483  
and ADM3488 feature slew-rate-limited drivers that minimize  
EMI and reduce reflections caused by improperly terminated  
cables, allowing error-free data transmission at data rates up to  
250kbps. The partially slew-rate-limited MAX3486 transmits up  
to 2.5Mbps. The ADM3485 and ADM3490 transmit at up to  
10Mbps.  
Z
Y
D
D
GND  
GND  
The drivers are short-circuit current limited and are protected  
against excessive power dissipation by thermal shutdown  
circuitry that places the driver outputs into a high-impedance  
state. The receiver input has a fail-safe feature that guarantees a  
Part No.  
Guaranteed  
Data Rate  
(Mpbs)  
0.25  
Supply  
Voltage  
Half/Full  
Duplex  
Slew-Rate  
Limited  
Driver/  
Reciever  
Enable  
Yes  
Shutdown  
Current  
Pin  
Count  
(V)  
(nA)  
2
Yes  
No  
Yes  
No  
ADM3483  
ADM3485  
ADM3488  
ADM3490  
Half  
Half  
Full  
Full  
8
8
8
8
2
-
10  
Yes  
3.0 to 3.6  
0.25  
No  
-
10  
No  
Table 1. Selection Table  
Rev. PrD  
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 companies.  
One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A.  
Tel: 781.329.4700  
Fax: 781.326.8703  
www.analog.com  
© 2005 Analog Devices, Inc. All rights reserved.  
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