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DS481

更新时间： 2024-01-10 04:17:38
品牌 Logo 应用领域
美国国家半导体 - NSC /
页数 文件大小 规格书
10页 160K
描述
Low Power RS-485/RS-422 Multipoint Transceiver with Sleep Mode

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中文翻译

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DS481 技术参数

是否无铅： 含铅是否Rohs认证： 不符合
生命周期：Active零件包装代码：DIP
包装说明：DIP-8针数：8
Reach Compliance Code：unknown风险等级：5.61
Is Samacsys：N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-485
JESD-30 代码：R-PDIP-T8JESD-609代码：e0
长度：9.817 mm湿度敏感等级：NOT SPECIFIED
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
封装主体材料：PLASTIC/EPOXY封装代码：DIP
封装形状：RECTANGULAR封装形式：IN-LINE
峰值回流温度（摄氏度）：NOT SPECIFIED认证状态：COMMERCIAL
最大接收延迟：400 ns接收器位数：1
座面最大高度：5.08 mm最大供电电压：5.25 V
最小供电电压：4.75 V标称供电电压：5 V
表面贴装：NO温度等级：INDUSTRIAL
端子面层：TIN LEAD端子形式：THROUGH-HOLE
端子节距：2.54 mm端子位置：DUAL
处于峰值回流温度下的最长时间：NOT SPECIFIED最大传输延迟：80 ns
宽度：7.62 mmBase Number Matches：1

DS481 数据手册

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July 1998  
DS481  
Low Power RS-485/RS-422 Multipoint Transceiver with  
Sleep Mode  
General Description  
Features  
n Meets TIA/EIA RS-485 multipoint standard  
n Sleep mode reduces ICC to 0.2 µA  
The DS481 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  
2.0 Mbps (see Applications Information section).  
n Guaranteed full load output voltage (V  
n Low quiescent current: 200 µA typ  
)
OD3  
The transceiver draws 200 µA of supply current when un-  
loaded or 0.2 µA when in the automatic sleep mode. Sleep  
mode is activated by inactivity on the enables (DE and RE  
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  
=
=
(Note 1)). Holding DE L and RE (Note 1) H for greater than  
600 ns will enable the sleep mode. The DS481 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).  
— 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 128 transceivers on the bus (DS481N/M)  
n Allows up to 64 tranceivers on the bus (DS481TN/M)  
n Current-limiting and thermal shutdown for driver  
overload protection  
n Industrial temperature range operation  
n Pin and functional compatible with MAX481C and  
MAX481E  
The receiver has  
a failsafe feature that guarantees a  
logic-high output if the input is open circuit.  
The DS481 is available in surface mount and DIP packages  
and is characterized for Industrial and Commercial tempera-  
ture range operation.  
Connection and Logic Diagram  
Truth Table  
DRIVER SECTION  
RE  
DE  
DI  
A
B
(Note 1)  
X
X
X
H
H
L
H
L
H
L
L
H
X
Z
Z (Note 2)  
RECEIVER SECTION  
DS012919-1  
RE  
DE  
A-B  
RO  
*Note: Non Terminated, Open Input only  
(Note 1)  
L
L
L
L
X
L
≥+0.2V  
≤−0.2V  
X
H
Order Number  
DS481N  
Temp. Range  
0˚C to +70˚C  
Package/###  
DIP/N08E  
L
Z (Note 2)  
H
H
L
DS481M  
0˚C to +70˚C  
SOP/M08A  
DIP/N08E  
OPEN (Note 1)  
DS481TN  
DS481TM  
−40˚C to +85˚C  
−40˚C to +85˚C  
=
=
X
Z
indeterminate  
TRI-STATE  
SOP/M08A  
Note 1: Non Terminated, Open Input only  
>
Note 2: Device enters sleep mode if enable conditions are held  
600 ns,  
=
=
DE L and RE (Note 1) H.  
TRI-STATE® is a registered trademark of National Semiconductor Corporation.  
© 1999 National Semiconductor Corporation  
DS012919  
www.national.com  
1234567...10

中文翻译

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