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ADM4852ACP-REEL7

更新时间： 2024-11-26 22:39:03
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16页 614K
描述
5 V Slew-Rate Limited Half- and Full-Duplex RS-485/RS-422 Transceivers

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ADM4852ACP-REEL7 数据手册

 浏览型号ADM4852ACP-REEL7的Datasheet PDF文件第2页浏览型号ADM4852ACP-REEL7的Datasheet PDF文件第3页浏览型号ADM4852ACP-REEL7的Datasheet PDF文件第4页浏览型号ADM4852ACP-REEL7的Datasheet PDF文件第5页浏览型号ADM4852ACP-REEL7的Datasheet PDF文件第6页浏览型号ADM4852ACP-REEL7的Datasheet PDF文件第7页 
5 V Slew-Rate Limited Half- and Full-Duplex  
RS-485/RS-422 Transceivers  
ADM4850–ADM4857  
FEATURES  
FUNCTIONAL BLOCK DIAGRAM  
EIA RS-485-/RS-422-compliant  
V
V
CC  
CC  
Data rate options  
ADM4850/ADM4854—115 kbps  
ADM4851/ADM4855—500 kbps  
ADM4850/ADM4851/  
ADM4852/ADM4853  
ADM4854/ADM4855/  
ADM4856/ADM4857  
RO  
R
ADM4852/ADM4856—2.5 Mbps  
ADM4853/ADM4857—10 Mbps  
Half- and full-duplex options  
Reduced slew rates for low EMI  
A
B
RO  
DI  
R
A
B
RE  
DE  
Z
Y
D
True fail-safe receiver inputs  
D
DI  
5 µA (maximum) supply current in shutdown mode  
Up to 256 transceivers on one bus  
Outputs high-z when disabled or powered off  
−7 V to +12 V bus common-mode range  
Thermal shutdown and short-circuit protection  
Pin-compatible with MAX308x  
GND  
GND  
Figure 1.  
Specified over the −40°C to +85°C temperature range  
Available in 8-lead SOIC and LFCSP packages  
APPLICATIONS  
Low power RS-485 applications  
EMI-sensitive systems  
DTE-DCE interfaces  
Industrial control  
Packet switching  
Local area networks  
Level translators  
GENERAL DESCRIPTION  
The ADM4850−ADM4857 are differential line transceivers  
suitable for high speed half- and full-duplex data communication  
on multipoint bus transmission lines. They are designed for  
balanced data transmission and comply with EIA Standards  
RS-485 and RS-422. The ADM4850−ADM4853 are half-duplex  
transceivers, which share differential lines and have separate  
enable inputs for the driver and receiver. The full-duplex  
ADM4854−ADM4857 transceivers have dedicated differential  
line driver outputs and receiver inputs.  
The driver outputs are slew-rate limited 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.  
The parts are fully specified over the commercial and industrial  
temperature ranges, and are available in 8-lead SOIC and LFCSP  
packages.  
Table 1. Selection Table  
Part No  
Half-/Full-Duplex  
Data Rate  
115 kbps  
500 kbps  
2.5 Mbps  
10 Mbps  
115 kbp  
500 kbps  
2.5 Mbps  
10 Mbps  
The parts have a 1/8-unit-load receiver input impedance, which  
allows up to 256 transceivers on one bus. Since only one driver  
should be enabled at any time, the output of a disabled or pow-  
ered-down driver is three-stated to avoid overloading the bus.  
ADM4850  
ADM4851  
ADM4852  
ADM4853  
ADM4854  
ADM4855  
ADM4856  
ADM4857  
Half  
Half  
Half  
Half  
Full  
Full  
Full  
Full  
The receiver inputs have a true fail-safe feature, which ensures a  
logic high output level when the inputs are open or shorted.  
This guarantees that the receiver outputs are in a known state  
before communication begins and when communication ends.  
Rev. 0  
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  
Fax: 781.326.8703  
www.analog.com  
© 2004 Analog Devices, Inc. All rights reserved.  
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ADM4852ACP-REEL7 替代型号

型号 品牌 替代类型 描述 数据表
ADM4853ACPZ-REEL7 ADI

完全替代

 5 V, Slew-Rate Limited, Half-Duplex and Full-Duplex RS-485/RS-422 Transceivers
ADM4852ACPZ-REEL7 ADI

完全替代

 5 V, Slew-Rate Limited, Half-Duplex and Full-Duplex RS-485/RS-422 Transceivers
ADM4850ACPZ-REEL7 ADI

类似代替

 5 V, Slew-Rate Limited, Half-Duplex and Full-Duplex RS-485/RS-422 Transceivers

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