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DS1821C PDF预览

DS1821C

更新时间: 2024-11-21 20:10:43
品牌 Logo 应用领域
美信 - MAXIM 输出元件传感器换能器
页数 文件大小 规格书
19页 793K
描述
Serial Switch/Digital Sensor, 8 Bit(s), 1Cel, Round, 3 Pin, Through Hole Mount, TO-92, 3 PIN

DS1821C 技术参数

是否无铅: 含铅是否Rohs认证: 不符合
生命周期:Obsolete包装说明:TO-92, 3 PIN
Reach Compliance Code:not_compliantECCN代码:EAR99
HTS代码:8542.39.00.01风险等级:5.81
最大精度(摄氏度):1 Cel主体高度:4.63 mm
主体长度或直径:4.7 mm安装特点:THROUGH HOLE MOUNT
位数:8端子数量:3
最大工作电流:1 mA最高工作温度:125 °C
最低工作温度:-55 °C输出接口类型:1-WIRE INTERFACE
封装主体材料:PLASTIC/EPOXY封装等效代码:SIP3,.1,50
封装形状/形式:ROUND电源:3/5 V
传感器/换能器类型:TEMPERATURE SENSOR,SWITCH/DIGITAL OUTPUT,SERIAL子类别:Other Sensors
最大供电电压:5.5 V最小供电电压:2.7 V
表面贴装:NO端接类型:SOLDER
Base Number Matches:1

DS1821C 数据手册

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19-6322; Rev 6/12  
DS1821  
Programmable Digital Thermostat and Thermometer  
FEATURES  
PIN ASSIGNMENT  
. Requires no external components  
. Unique 1-Wire® interface requires only one  
port pin for communication  
. Operates over a -55°C to +125°C (-67°F to  
+257°F) temperature range  
8
7
6
5
1
2
DQ  
VDD  
DS1821  
GND  
NC  
NC  
NC  
NC  
3
4
1 2 3  
. Functions as a standalone thermostat with  
user-definable trip-points  
NC  
. Provides 8-bit (1°C resolution) centigrade  
temperature measurements  
. Accuracy is ±1°C over 0°C to +85°C range  
. Converts temperature to a digital word in  
1 second (max)  
8-pin 208-mil SO  
(DS1821S)  
. Available in 3-pin TO92 and 8-pin SO  
packages  
. Applications include thermostatic controls,  
industrial systems, consumer products,  
thermometers, or any thermally sensitive  
system  
1
2
3
(BOTTOM VIEW)  
TO92  
(DS1821C)  
PIN DESCRIPTION  
GND  
DQ  
VDD  
NC  
- Ground  
- Data In/Out and Thermostat Output  
- Power Supply Voltage  
- No Connect  
1-Wire is a registered trademark of Maxim Integrated  
Products, Inc.  
DESCRIPTION  
The DS1821 can function as a standalone thermostat with user-programmable trip-points or as 8-bit  
temperature sensor with a 1-Wire digital interface. The thermostat trip-points are stored in nonvolatile  
memory, so DS1821 units can be programmed prior to system insertion for true standalone operation.  
The DS1821 has an operating temperature range of –55°C to +125°C and is accurate to ±1°C over a range  
of 0°C to +85°C. Communication with the DS1821 is accomplished through the open-drain DQ pin; this  
pin also serves as the thermostat output.  
1 of 19  

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