DS1821S+TR

更新时间： 2024-01-26 18:17:15

品牌	Logo	应用领域
达拉斯 - DALLAS		监控
页数	文件大小	规格书
18页	455K
描述
Programmable Digital Thermostat and Thermometer

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技术参数
数据手册

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DS1821S+TR 技术参数

是否Rohs认证：	不符合	生命周期：	Obsolete
包装说明：	TO-220, 3 PIN	Reach Compliance Code：	unknown
风险等级：	5.78	Is Samacsys：	N
外壳：	PLASTIC	JESD-609代码：	e0
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,.1TB	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	最大供电电压：	5.5 V
最小供电电压：	2.7 V	表面贴装：	NO
端子面层：	Tin/Lead (Sn/Pb)	端接类型：	SOLDER
Base Number Matches：	1

DS1821S+TR 数据手册

DS1821

Programmable Digital Thermostat and

Thermometer

www.maxim-ic.com

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

Functions as a standalone thermostat with

user-definable trip-points

GND

V_DD

DALLAS

DS1821

1 2 3

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 PR35 and 8-pin SO

packages

Applications include thermostatic controls,

industrial systems, consumer products,

thermometers, or any thermally sensitive

system

(BOTTOM VIEW)

PR35

(DS1821)

PIN DESCRIPTION

GND

V_DD

- Ground

- Data In/Out and Thermostat Output

- Power Supply Voltage

- No Connect

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-Wire is a registered trademark of Dallas Semiconductor Corp.,

a wholly owned subsidiary of Maxim Integrated Products, Inc.

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