DS1821S+T

更新时间： 2024-02-29 13:10:17

品牌	Logo	应用领域
美信 - MAXIM		监控
页数	文件大小	规格书
19页	800K
描述
Programmable Digital Thermostat and Thermometer

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技术参数
数据手册

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DS1821S+T 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+T 数据手册

DS1821

ORDERING INFORMATION

PART

DS1821C+

PACKAGE MARKING

DS1821

PIN-PACKAGE

3 TO92

DS1821S+

DS1821S

8 SO (208 mils)

8 SO (208 mils), 2000 Piece

Tape-and-Reel

DS1821S+T&R

DS1821S

+Denotes a lead(Pb)-free/RoHS-compliant package.

T&R = Tape and reel.

DETAILED PIN DESCRIPTIONS Table 1

TO92

8-PIN SYMBOL

SO*

DESCRIPTION

GND

Ground pin.

Open drain data input/output pin – 1-Wire operation; Open drain

thermostat output pin –thermostat operation.

Power supply pin.

V_DD

*All pins not specified in this table are “No Connect” pins.

OVERVIEW

Figure 1 shows a block diagram of the DS1821 and pin descriptions are given in Table 1. The DS1821

can operate as a standalone thermostat with user-programmable trip-points or as 8-bit temperature sensor

with a 1-Wire digital interface. The open-drain DQ pin functions as the thermostat output for thermostat

operation and as the data I/O pin for 1-Wire communications. The 1-Wire interface provides user access

to the nonvolatile (EEPROM) thermostat trip-point registers (T_Hand T_L), the status/configuration register,

and the temperature register.

When configured as standalone thermostat, temperature conversions start immediately at power-up. In

this mode, the DQ pin becomes active when the temperature of the DS1821 exceeds the limit

programmed into the T_Hregister, and remains active until the temperature drops below the limit

programmed into the T_Lregister.

The DS1821 uses Maxim’s exclusive 1-Wire bus protocol that implements bus communication with one

control signal. This system is explained in detail in the 1-Wire BUS SYSTEM section of this datasheet.

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与DS1821S+T相关器件

型号	品牌	描述	获取价格	数据表
DS1821S+T&R	MAXIM	Serial Switch/Digital Sensor, 8 Bit(s), 1Cel, Rectangular, 8 Pin, Surface Mount, 0.208 INC	获取价格
DS1821S+T&R	DALLAS	Programmable Digital Thermostat and Thermometer	获取价格
DS1821S+TR	DALLAS	Programmable Digital Thermostat and Thermometer	获取价格
DS1821T	MAXIM	Temperature Sensor, 3 Pin, Through Hole Mount,	获取价格
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DS1822	MAXIM	Econo 1-Wire Digital Thermometer	获取价格