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DS485M

更新时间： 2024-11-26 22:40:39
品牌 Logo 应用领域
美国国家半导体 - NSC 线路驱动器或接收器驱动程序和接口接口集成电路光电二极管
页数 文件大小 规格书
10页 143K
描述
Low Power RS-485/RS-422 Multipoint Transceiver

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中文翻译

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DS485M 技术参数

是否Rohs认证： 不符合生命周期：Transferred
包装说明：PLASTIC, SOP-8Reach Compliance Code：not_compliant
ECCN代码：EAR99HTS代码：8542.39.00.01
风险等级：5.09Is Samacsys：N
差分输出：YES驱动器位数：1
高电平输入电流最大值：0.000002 A输入特性：DIFFERENTIAL SCHMITT TRIGGER
接口集成电路类型：LINE TRANSCEIVER接口标准：EIA-422; EIA-485; TIA-485
JESD-30 代码：R-PDSO-G8JESD-609代码：e0
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：70 °C最低工作温度：
最小输出摆幅：1.5 V最大输出低电流：0.004 A
输出极性：COMPLEMENTARY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）：235电源：5 V
认证状态：Not Qualified最大接收延迟：320 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：0.9 mA
标称供电电压：5 V表面贴装：YES
技术：CMOS温度等级：COMMERCIAL
端子面层：Tin/Lead (Sn/Pb)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：65 ns
宽度：3.9 mmBase Number Matches：1

DS485M 数据手册

 浏览型号DS485M的Datasheet PDF文件第2页浏览型号DS485M的Datasheet PDF文件第3页浏览型号DS485M的Datasheet PDF文件第4页浏览型号DS485M的Datasheet PDF文件第5页浏览型号DS485M的Datasheet PDF文件第6页浏览型号DS485M的Datasheet PDF文件第7页 
July 1998  
DS485  
Low Power RS-485/RS-422 Multipoint Transceiver  
General Description  
Features  
n Meets TIA/EIA RS-485 multipoint standard  
The DS485 is a low-power transceiver for RS-485 and  
RS-422 communication. The device contains one driver and  
one receiver. The drivers slew rate allows for operation up to  
2.5 Mbps (see Applications Information section).  
n Guaranteed full load output voltage (V  
n Low quiescent current: 200 µA typ  
)
OD3  
n −7V to +12V common-mode input voltage range  
n TRI-STATE outputs on driver and receiver  
n AC performance:  
— Driver transition time: 25 ns typ  
— Driver propagation delay: 40 ns typ  
— Driver skew: 1 ns typ  
— Receiver propagation delay: 200 ns typ  
— Receiver skew: 20 ns typ  
n Half-duplex flow through pinout  
n Operates from a single 5V supply  
n Allows up to 32 transceivers on the bus  
n Current-limiting and thermal shutdown for driver  
overload protection  
The transceiver draws 200 µA of supply current when un-  
loaded or fully loaded with the driver disabled and operates  
from a single +5V supply.  
The driver is short-circuit current limited and is protected  
against excessive power dissipation by thermal shutdown  
circuitry that places the driver outputs into TRI-STATE®  
(High Impedance state) under fault conditions. The driver  
guarantees a minimum of 1.5V differential output voltage  
with maximum loading across the common mode range  
(VOD3).  
The receiver has  
a failsafe feature that guarantees a  
logic-high output if the input is open circuit.  
The DS485 is available in surface mount and DIP packages  
and is characterized for Industrial and Commercial tempera-  
ture range operation.  
n Industrial temperature range operation  
n Pin and functional compatible with MAX485 and LTC485  
Connection and Logic Diagram  
Truth Table  
DRIVER SECTION  
DIP and SOIC  
*
RE  
X
DE  
H
DI  
H
L
A
H
L
B
L
X
H
H
Z
X
L
X
Z
RECEIVER SECTION  
*
RE  
L
DE  
L
A-B  
≥+0.2V  
≤−0.2V  
X
RO  
H
DS012880-1  
L
L
L
H
L
X
Z
Order Number  
DS485N  
Temp. Range  
0˚C to +70˚C  
Package/###  
DIP/N08E  
*
L
OPEN  
H
*
Note: Non Terminated, Open Input only  
DS485M  
0˚C to +70˚C  
SOP/M08A  
DIP/N08E  
=
X
Z
indeterminate  
TRI-STATE  
=
DS485TN  
DS485TM  
−40˚C to +85˚C  
−40˚C to +85˚C  
SOP/M08A  
TRI-STATE® is a registered trademark of National Semiconductor Corporation.  
© 1999 National Semiconductor Corporation  
DS012880  
www.national.com  
1234567...10

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 		IC LINE TRANSCEIVER, PDIP8, PLASTIC, DIP-8, Line Driver or Receiver
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 		Low Power RS-485/RS-422 Multipoint Transceiver
DS485TM/NOPB TI

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 		Low-Power RS-485/RS-422 Multipoint Transceiver 8-SOIC -40 to 85
DS485TMX ETC

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 		Transceiver
DS485TN NSC

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 		Low Power RS-485/RS-422 Multipoint Transceiver
DS485TN/NOPB TI

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 		LINE TRANSCEIVER, PDIP8, PLASTIC, DIP-8
DS485TN/NOPB ROCHESTER

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 		LINE TRANSCEIVER, PDIP8, PLASTIC, DIP-8

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