Datasheet > DS18B20+

DS18B20+

更新时间： 2024-09-24 21:15:47

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美信 - MAXIM		/
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数据手册
替代型号

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DS18B20+ 数据手册

DS18B20

Programmable Resolution

1-Wire Digital Thermometer

General Description

Beneﬁts and Features

● Unique 1-Wire Interface Requires Only One Port

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 micro-

processor. In addition, the DS18B20 can derive power

directly from the data line (“parasite power”), eliminating

the need for an external power supply.

Pin for Communication

● Reduce Component Count with Integrated

Temperature Sensor and EEPROM

• Measures Temperatures from -55°C to +125°C

(-67°F to +257°F)

• ±0.5°C Accuracy from -10°C to +85°C

• Programmable Resolution from 9 Bits to 12 Bits

• No External Components Required

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.

● Parasitic Power Mode Requires Only 2 Pins for

Operation (DQ and GND)

● Simplifies Distributed Temperature-Sensing

Applications with Multidrop Capability

• Each Device Has a Unique 64-Bit Serial Code

Stored in On-Board ROM

● Flexible User-Definable Nonvolatile (NV) Alarm Settings

with Alarm Search Command Identifies Devices with

Temperatures Outside Programmed Limits

Applications

● Thermostatic Controls

● Available in 8-Pin SO (150 mils), 8-Pin µSOP, and

● Industrial Systems

3-Pin TO-92 Packages

● Consumer Products

● Thermometers

● Thermally Sensitive Systems

Pin Conﬁgurations

TOP VIEW

N.C.

V_DD

N.C.

GND

DS18B20

SO (150 mils)

(DS18B20Z)

N.C.

GND

V_DD

GND DQ V_DD

N.C.

DS18B20

µSOP

(DS18B20U)

BOTTOM VIEW

Ordering Information appears at end of data sheet.

TO-92

(DS18B20)

1-Wire is a registered trademark of Maxim Integrated Products, Inc.

19-7487; Rev 4; 1/15

12 3 4 5 6 7...20

中文翻译

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DS18B20+ 替代型号

型号	品牌	替代类型	描述	数据表
DS18B20-SL+T&R	MAXIM	完全替代	Serial Switch/Digital Sensor, 12 Bit(s), 0.50Cel, Rectangular, 3 Pin, Through Hole Mount,
DS18B20+T&R	MAXIM	类似代替	Serial Switch/Digital Sensor, 12 Bit(s), 0.50Cel, Rectangular, 3 Pin, Through Hole Mount,
DS18B20	MAXIM	类似代替	1-Wire Digital Thermometer

与DS18B20+相关器件

型号	品牌	获取价格	描述	数据表
DS18B20+T&R	MAXIM	获取价格	Serial Switch/Digital Sensor, 12 Bit(s), 0.50Cel, Rectangular, 3 Pin, Through Hole Mount,
DS18B20A10	UMW	获取价格	温度感应器
DS18B20A20	UMW	获取价格	温度感应器
DS18B20A30	UMW	获取价格	温度感应器
DS18B20P	DALLAS	获取价格	Serial Switch/Digital Sensor, 12 Bit(s), 0.50Cel, Rectangular, Surface Mount, TSOC-6
DS18B20-PAR	MAXIM	获取价格	1-Wire Parasite-Power Digital Thermometer
DS18B20-PAR	ADI	获取价格	1-Wire寄生供电数字温度计
DS18B20-PAR/T&R	MAXIM	获取价格	Serial Switch/Digital Sensor, 12 Bit(s), 0.50Cel, Round, Through Hole Mount, TO-92, 3 PIN
DS18B20-PAR_07	MAXIM	获取价格	1-Wire Parasite-Power Digital Thermometer
DS18B20-PAR+T&R	MAXIM	获取价格	暂无描述

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