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ADM489AN

更新时间： 2024-11-23 22:36:31
品牌 Logo 应用领域
亚德诺 - ADI /
页数 文件大小 规格书
12页 215K
描述
Full-Duplex, Low Power, Slew Rate Limited, EIA RS-485 Transceivers

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中文翻译

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ADM489AN 数据手册

 浏览型号ADM489AN的Datasheet PDF文件第2页浏览型号ADM489AN的Datasheet PDF文件第3页浏览型号ADM489AN的Datasheet PDF文件第4页浏览型号ADM489AN的Datasheet PDF文件第5页浏览型号ADM489AN的Datasheet PDF文件第6页浏览型号ADM489AN的Datasheet PDF文件第7页 
Full-Duplex, Low Power,  
Slew Rate Limited, EIA RS-485 Transceivers  
a
ADM488/ADM489  
FEATURES  
FUNCTIO NAL BLO CK D IAGRAMS  
Meets EIA RS-485 Standard  
250 kbps Data Rate  
Single +5 V ؎ 10% Supply  
–7 V to +12 V Bus Com m on-Mode Range  
12 k⍀ Input Im pedance  
2 kV EFT Protection Meets IEC1000-4-4  
High EM Im m unity Meets IEC1000-4-3  
Reduced Slew Rate for Low EM Interference  
Short Circuit Protection  
ADM488  
A
R
RO  
DI  
B
Z
Y
D
Excellent Noise Im m unity  
30 ␮A Supply Current  
APPLICATIONS  
Low Pow er RS-485 System s  
DTE-DCE Interface  
ADM489  
Packet Sw itching  
Local Area Netw orks  
Data Concentration  
Data Multiplexers  
Integrated Services Digital Netw ork (ISDN)  
A
B
R
RO  
RE  
DE  
Z
Y
DI  
D
GENERAL D ESCRIP TIO N  
T he ADM488 and ADM489 are low power differential line  
transceiver suitable for communication on multipoint bus trans-  
mission lines.  
T he receiver contains a fail-safe feature that results in a logic  
high output state if the inputs are unconnected (floating).  
T he ADM488/ADM489 is fabricated on BiCMOS, an ad-  
vanced mixed technology process combining low power CMOS  
with fast switching bipolar technology.  
T hey are intended for balanced data transmission and comply  
with both EIA Standards RS-485 and RS-422. Both products  
contains a single differential line driver and a single differential  
line receiver making them suitable for full duplex data transfer.  
T he ADM488/ADM489 is fully specified over the industrial  
temperature range and is available in DIP, SOIC and T SSOP  
packages.  
T he ADM489 contains an additional receiver and driver enable  
control.  
T he input impedance is 12 kΩ, allowing 32 transceivers to be  
connected on the bus.  
T he ADM488/ADM489 operates from a single +5 V ± 10%  
power supply. Excessive power dissipation caused by bus con-  
tention or by output shorting is prevented by a thermal shut-  
down circuit. T his feature forces the driver output into a high  
impedance state if during fault conditions a significant tempera-  
ture increase is detected in the internal driver circuitry.  
REV. 0  
Inform ation furnished by Analog Devices is believed to be accurate and  
reliable. However, no responsibility is assum ed by Analog Devices for its  
use, nor for any infringem ents of patents or other rights of third parties  
which m ay result from its use. No license is granted by im plication or  
otherwise under any patent or patent rights of Analog Devices.  
One Technology Way, P.O. Box 9106, Norw ood, MA 02062-9106, U.S.A.  
Tel: 617/ 329-4700  
Fax: 617/ 326-8703  
World Wide Web Site: http:/ / w w w .analog.com  
© Analog Devices, Inc., 1997  
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ADM489AN 替代型号

型号 品牌 替代类型 描述 数据表
ADM489ANZ ADI

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