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or pricing, delivery, and ordering information, please contact Maxim Direct
1-
-  2  -4  42   r vi  i  M  xim  w
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www.m  ximin    r
.   m.
 
 
REV: 042208
 
 
 
 
DESCRIPTION
The DS18B20 digital thermometer provides 9-bit
to 12-bit Celsius temperature measurements and
has an alarm function with nonvolatile user-
programmable upper and lower trigger points.
The DS18B20 communicates over a 1-Wire bus
that by definition requires only one data line (and
ground)   for   communication   with   a   central
microprocessor. It has an operating temperature
range of -55癈 to +125癈 and is accurate to
?.5癈 over the range of -10癈 to +85癈. In
addition, the DS18B20 can derive power directly
from the data line (parasite power), eliminating
the need for an external power supply.
 
Each DS18B20 has a unique 64-bit serial code,
which allows multiple DS18B20s to function on
the same 1-Wire bus. Thus, it is simple to use one
microprocessor   to   control   many   DS18B20s
distributed over a large area. Applications that
can benefit from this feature include HVAC
environmental controls, temperature monitoring
systems    inside    buildings,    equipment,    or
machinery, and process monitoring and control
systems.
 
FEATURES
?  Unique 1-Wire?Interface Requires Only One
Port Pin for Communication
?  Each Device has a Unique 64-Bit Serial Code
Stored in an On-Board ROM
?  Multidrop Capability Simplifies Distributed
Temperature-Sensing Applications
?  Requires No External Components
?  Can Be Powered from Data Line; Power Supply
Range is 3.0V to 5.5V
?  Measures Temperatures from -55癈 to +125癈
(-67癋 to +257癋)
?  ?.5癈 Accuracy from -10癈 to +85癈
?  Thermometer Resolution is User Selectable
from 9 to 12 Bits
?  Converts Temperature to 12-Bit Digital Word in
750ms (Max)
?  User-Definable Nonvolatile (NV) Alarm
Settings
?  Alarm Search Command Identifies and
Addresses Devices Whose Temperature is
Outside Programmed Limits (Temperature
Alarm Condition)
?  Available in 8-Pin SO (150 mils), 8-Pin 礢OP,
and 3-Pin TO-92 Packages
?  Software Compatible with the DS1822
?  Applications Include Thermostatic Controls,
Industrial Systems, Consumer Products,
Thermometers, or Any Thermally Sensitive
System
 
PIN CONFIGURATIONS
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
DS18B20
Programmable Resolution
1-Wire Digital Thermometer
TO-92
(DS18B20)
1 2 3
AXIM
18B20 
1
2   3
SO (150 mils)
(DS18B20Z)
N.  .
N.C.
N.C.
GND
DQ
V
DD
 
6
7
3
2
V
DD
 
N.  .
N.C.
N.  .
GND
N.C.
6
7
3
2
?SPAN class="pst DS18B20Z-T-R_2290795_6">SOP 
(DS18B20U)
1-Wire is a registered trademark of Maxim Integrated Products, Inc.
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相关代理商/技术参数
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DS18B20Z+ 制造商:Maxim Integrated Products 功能描述:SEMICONDUCTOR ((NW))
DS18B20Z+T&R 制造商:Maxim Integrated Products 功能描述:HI RES MICROLAN DIG THERM 8-SOIC TR 制造商:Maxim Integrated Products 功能描述:TEMP SENSOR DGTL SERL (1-WIRE) 8SOIC N - Tape and Reel 制造商:Maxim Integrated Products 功能描述:IC THERM MICROLAN PROG-RES 8SOIC 制造商:Maxim Integrated Products 功能描述:Board Mount Temperature Sensors Prgmble Resolution 1-Wire Parasite Pwr
DS18B20Z+T&R 功能描述:板上安装温度传感器 Prgmble Resolution 1-Wire Parasite Pwr RoHS:否 制造商:Omron Electronics 输出类型:Digital 配置: 准确性:+/- 1.5 C, +/- 3 C 温度阈值: 数字输出 - 总线接口:2-Wire, I2C, SMBus 电源电压-最大:5.5 V 电源电压-最小:4.5 V 最大工作温度:+ 50 C 最小工作温度:0 C 关闭: 安装风格: 封装 / 箱体: 设备功能:Temperature and Humidity Sensor
DS18B20Z-W 制造商:Maxim Integrated Products 功能描述:
DS18S20 功能描述:板上安装温度传感器 RoHS:否 制造商:Omron Electronics 输出类型:Digital 配置: 准确性:+/- 1.5 C, +/- 3 C 温度阈值: 数字输出 - 总线接口:2-Wire, I2C, SMBus 电源电压-最大:5.5 V 电源电压-最小:4.5 V 最大工作温度:+ 50 C 最小工作温度:0 C 关闭: 安装风格: 封装 / 箱体: 设备功能:Temperature and Humidity Sensor
DS18S20/T&R 制造商:Rochester Electronics LLC 功能描述: 制造商:Maxim Integrated Products 功能描述:IC THERM MICROLAN HI PREC TO-92
DS18S20/T&R 功能描述:板上安装温度传感器 RoHS:否 制造商:Omron Electronics 输出类型:Digital 配置: 准确性:+/- 1.5 C, +/- 3 C 温度阈值: 数字输出 - 总线接口:2-Wire, I2C, SMBus 电源电压-最大:5.5 V 电源电压-最小:4.5 V 最大工作温度:+ 50 C 最小工作温度:0 C 关闭: 安装风格: 封装 / 箱体: 设备功能:Temperature and Humidity Sensor