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ADM3493

更新时间： 2024-02-16 13:04:02
品牌 Logo 应用领域
亚德诺 - ADI /
页数 文件大小 规格书
12页 329K
描述
3.3 V Slew Rate Limited, Half Duplex RS-485/RS-422 Transceiver

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ADM3493 技术参数

是否无铅： 含铅是否Rohs认证： 符合
生命周期：Active零件包装代码：SOIC
包装说明：SOP, SOP8,.25针数：8
Reach Compliance Code：compliantECCN代码：EAR99
HTS代码：8542.39.00.01风险等级：1.37
差分输出：YES驱动器位数：1
输入特性：DIFFERENTIAL SCHMITT TRIGGER接口集成电路类型：LINE TRANSCEIVER
接口标准：EIA-422; EIA-485JESD-30 代码：R-PDSO-G8
JESD-609代码：e3长度：4.9 mm
湿度敏感等级：1功能数量：1
端子数量：8最高工作温度：85 °C
最低工作温度：-40 °C最小输出摆幅：2 V
封装主体材料：PLASTIC/EPOXY封装代码：SOP
封装等效代码：SOP8,.25封装形状：RECTANGULAR
封装形式：SMALL OUTLINE峰值回流温度（摄氏度）：260
电源：3.3 V认证状态：Not Qualified
最大接收延迟：180 ns接收器位数：1
座面最大高度：1.75 mm子类别：Line Driver or Receivers
最大压摆率：2.2 mA最大供电电压：3.6 V
最小供电电压：3 V标称供电电压：3.3 V
表面贴装：YES温度等级：INDUSTRIAL
端子面层：Matte Tin (Sn)端子形式：GULL WING
端子节距：1.27 mm端子位置：DUAL
处于峰值回流温度下的最长时间：30最大传输延迟：1500 ns
宽度：3.9 mmBase Number Matches：1

ADM3493 数据手册

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3.3 V Slew Rate Limited,  
Half Duplex RS-485/RS-422 Transceiver  
ADM3493  
FUNCTIONAL BLOCK DIAGRAM  
FEATURES  
V
Operates with 3.3 V supply  
CC  
Interoperable with 5 V logic  
EIA RS-422 and RS-485 compliant over full CM range  
Data rate: 250 kbps  
ADM3493  
R
RO  
RE  
DE  
DI  
A
B
Half duplex transceiver  
Reduced slew rates for low EMI  
2 nA supply current in shutdown mode  
Up to 256 transceivers on a bus  
−7 V to +12 V bus common-mode range  
Specified over −40°C to +85°C temperature range  
8 ns skew  
D
GND  
Figure 1.  
Available in 8-lead SOIC  
APPLICATIONS  
Low power RS-485 applications  
EMI sensitive systems  
DTE-DCE interfaces  
Industrial control  
Packet switching  
Local area networks  
Level translators  
The receiver input impedance is 96 kΩ, allowing up to 256  
transceivers to be connected on the bus. A thermal shutdown  
circuit prevents excessive power dissipation caused by bus  
contention or by output shorting. If a significant temperature  
increase is detected in the internal driver circuitry during fault  
conditions then the thermal shutdown circuit forces the driver  
output into a high impedance state. The receiver contains a fail-  
safe feature that results in a logic high output state, if the inputs  
are unconnected (floating).  
GENERAL DESCRIPTION  
The ADM3493 is a low power, differential line transceiver  
designed to operate using a single 3.3 V power supply. Low  
power consumption, coupled with a shutdown mode, makes it  
ideal for power-sensitive applications. The ADM3493 is suitable  
for communication on multipoint bus transmission lines.  
The device contains one driver and one receiver. Designed for  
half-duplex communication, the ADM3493 features a slew rate  
limited driver that minimizes EMI and reduces reflections  
caused by improperly terminated cables, allowing error-free  
data transmission at data rates up to 250 kbps.  
The ADM3493 is fully specified over the commercial and  
industrial temperature ranges and is available in an 8-lead SOIC.  
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 registeredtrademarks arethe property of their respective owners.  
One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A.  
Tel: 781.329.4700  
Fax: 781.461.3113  
www.analog.com  
©2005 Analog Devices, Inc. All rights reserved.  
 
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