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DS1621 PDF预览

DS1621

更新时间: 2024-01-18 06:52:16
品牌 Logo 应用领域
达拉斯 - DALLAS 传感器换能器温度传感器输出元件监控
页数 文件大小 规格书
16页 649K
描述
Digital Thermometer and Thermostat

DS1621 技术参数

是否无铅: 不含铅是否Rohs认证: 符合
生命周期:Active包装说明:SOP8,.3
Reach Compliance Code:compliantECCN代码:EAR99
HTS代码:8542.39.00.01Factory Lead Time:6 weeks
风险等级:5.17其他特性:COMPLIANCE TO MIL-208
主体宽度:3.91 mm主体高度:1.395 mm
主体长度或直径:4.88 mm外壳:PLASTIC
JESD-609代码:e3安装特点:SURFACE MOUNT
位数:9端子数量:8
最大工作电流:1.25 mA最高工作温度:125 °C
最低工作温度:-55 °C输出接口类型:2-WIRE INTERFACE
封装主体材料:PLASTIC/EPOXY封装等效代码:SOP8,.3
封装形状/形式:RECTANGULAR电源:3/5 V
传感器/换能器类型:TEMPERATURE SENSOR,SWITCH/DIGITAL OUTPUT,SERIAL子类别:Other Sensors/Transducers
最大供电电压:5.5 V最小供电电压:2.7 V
表面贴装:YES端子面层:Matte Tin (Sn)
端接类型:SOLDERBase Number Matches:1

DS1621 数据手册

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DS1621  
Digital Thermometer and Thermostat  
www.dalsemi.com  
FEATURES  
PIN ASSIGNMENT  
§ Temperature measurements require no  
external components  
§ Measures temperatures from –55°C to  
+125°C in 0.5°C increments. Fahrenheit  
equivalent is –67°F to 257°F in 0.9°F  
increments  
8
7
6
5
SDA  
1
VDD  
A0  
2
SCL  
3
4
TOUT  
GND  
A1  
A2  
§ Temperature is read as a 9–bit value (2-  
byte transfer)  
§ Wide power supply range (2.7V to 5.5V)  
§ Converts temperature to digital word in 1  
second  
DS1621S 8-PIN SOIC (150-MIL)  
DS1621V 8-PIN SOIC (208-MIL)  
See Mech Drawings Section  
8
SDA  
1
2
VDD  
A0  
§ Thermostatic settings are user definable  
and nonvolatile  
7
6
5
SCL  
TOUT  
GND  
§ Data is read from/written via a two–wire  
serial interface (open drain I/O lines)  
§ Applications include thermostatic  
controls, industrial systems, consumer  
products, thermometers, or any thermal  
sensitive system  
3
4
A1  
A2  
DS1621 8-PIN DIP (300-MIL)  
See Mech Drawings Section  
PIN DESCRIPTION  
§ 8–pin DIP or SOIC package (150-MIL and  
208-MIL)  
SDA  
SCL  
GND  
TOUT  
A0  
A1  
A2  
VDD  
- 2-Wire Serial Data Input/Output  
- 2-Wire Serial Clock  
- Ground  
- Thermostat Output Signal  
- Chip Address Input  
- Chip Address Input  
- Chip Address Input  
- Power Supply Voltage  
DESCRIPTION  
The DS1621 Digital Thermometer and Thermostat provides 9–bit temperature readings which indicate  
the temperature of the device. The thermal alarm output, TOUT is active when the temperature of the  
,
device exceeds a user–defined temperature TH. The output remains active until the temperature drops  
below user defined temperature TL, allowing for any hysteresis necessary.  
User-defined temperature settings are stored in nonvolatile memory so parts may be programmed prior to  
insertion in a system. Temperature settings and temperature readings are all communicated to/from the  
DS1621 over a simple two–wire serial interface.  
1 of 16  
102299  

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