DS1822/T&R

更新时间： 2024-02-01 15:12:35

品牌	Logo	应用领域
美信 - MAXIM		/
页数	文件大小	规格书
21页	223K
描述
Serial Switch/Digital Sensor, 12 Bit(s), 2Cel, Rectangular, 3 Pin, Through Hole Mount, TO92-3

阅读下载

获取价格

技术参数
数据手册

如果您发现信息不准确，欢迎纠错

DS1822/T&R 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,.25
Reach Compliance Code：	compliant	ECCN代码：	EAR99
HTS代码：	8542.39.00.01	Factory Lead Time：	6 weeks
风险等级：	1.59	Samacsys Description：	Board Mount Temperature Sensors Econo 1-Wire Digital Thermometer
最大精度（摄氏度）：	2 Cel	其他特性：	COMPLIANCE TO MIL-150
主体宽度：	3.91 mm	主体高度：	1.55 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：	12	端子数量：	8
最大工作电流：	1.5 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：	SOP8,.25
封装形状/形式：	RECTANGULAR	电源：	3.3/5 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：	3 V
表面贴装：	YES	端子面层：	Matte Tin (Sn)
端接类型：	SOLDER

DS1822/T&R 数据手册

DS1822

The use of parasite power is not recommended for temperatures above 100°C since the DS1822 may not

be able to sustain communications due to the higher leakage currents that can exist at these temperatures.

For applications in which such temperatures are likely, it is strongly recommended that the DS1822 be

In some situations the bus master may not know whether the DS1822s on the bus are parasite powered or

should be used during temperature conversions. To get this information, the master can issue a Skip ROM

[CCh] command followed by a Read Power Supply [B4h] command followed by a “read-time slot”.

During the read time slot, parasite powered DS1822s will pull the bus low, and externally powered

DS1822s will let the bus remain high. If the bus is pulled low, the master knows that it must supply the

strong pullup on the 1-Wire bus during temperature conversions.

SUPPLYING THE PARASITE-POWERED DS1822 DURING TEMPERATURE

CONVERSIONS Figure 4

V_PU

DS1822

GND

DQ V_DD

V_PU

Micro-

processor

4.7k

To Other

1-Wire Devices

1-Wire Bus

POWERING THE DS1822 WITH AN EXTERNAL SUPPLY Figure 5

V_DD(External Supply)

DS1822

V_PU

4.7k

Micro-

processor

GND

DQ V_DD

To Other

1-Wire Devices

1-Wire Bus

64-BIT LASERED ROM CODE

Each DS1822 contains a unique 64–bit code (see Figure 6) stored in ROM. The least significant 8 bits of

the ROM code contain the DS1822’s 1-Wire family code: 22h. The next 48 bits contain a unique serial

number. The most significant 8 bits contain a cyclic redundancy check (CRC) byte that is calculated from

the first 56 bits of the ROM code. A detailed explanation of the CRC bits is provided in the CRC

GENERATION section. The 64-bit ROM code and associated ROM function control logic allow the

DS1822 to operate as a 1-Wire device using the protocol detailed in the 1-WIRE BUS SYSTEM section

of this data sheet.

64-BIT LASERED ROM CODE Figure 6

8-BIT CRC

48-BIT SERIAL NUMBER

8-BIT FAMILY CODE (22h)

MSB

LSB MSB

LSB

MSB

LSB

6 of 21

1...3 4 567 8 9...21

下载PDF

与DS1822/T&R相关器件

型号	品牌	描述	获取价格	数据表
DS1822/T&R	MAXIM	Econo 1-Wire Digital Thermometer	获取价格
DS1822_V01	MAXIM	Econo 1-Wire Digital Thermometer	获取价格
DS1822+	MAXIM	Econo 1-Wire Digital Thermometer	获取价格
DS1822+PAR	MAXIM	Serial Switch/Digital Sensor, 12 Bit(s), 2Cel, Rectangular, 3 Pin, Through Hole Mount, TO-	获取价格
DS1822+T	MAXIM	Econo 1-Wire Digital Thermometer	获取价格
DS1822+T&R	MAXIM	Econo 1-Wire Digital Thermometer	获取价格

与DS1822/T&R相关文章

PCF8574资料解读：主要参数分析、引脚说明
2024-05-21

3
AD637数据手册解读：主要特性、引脚及其功能解读、电气参数
2024-05-21

4
ADUM1201资料手册解读：参数分析、引脚说明、应用分析
2024-05-21

7
一文带你了解压敏电阻器在直流电路中的过压保护作用
2024-05-21

3

产品中心

服务支持

精选活动

关于我们

帮助中心

DS1822/T&R

DS1822/T&R 技术参数

DS1822/T&R 数据手册

与DS1822/T&R相关器件

与DS1822/T&R相关文章

您还可以找

产品中心

服务支持

精选活动

关于我们

帮助中心

DS1822/T&R

DS1822/T&R 技术参数

DS1822/T&R 数据手册

与DS1822/T&R相关器件

与DS1822/T&R相关文章

您还可以找

您在本页遇到什么问题？