DS18B20U+ by Maxim Integrated | Temperature Sensors | Avnet AMERICAS
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DS18B20U+

Maxim Integrated

Temp Sensor Digital Serial (1-Wire) 8-Pin uMAX Tube

Manufacturer Part #: DS18B20U+

Avnet Manufacturer Part #: DS18B20U+


RoHS Compliant

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Information

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°C to +125°C and is accurate to ±0.5°C over the range of -10°C to +85°C. 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. FAQs: DS18B20

Key Features

  • Unique 1-Wire® Interface Requires Only One Port 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
  • 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
  • Available in 8-Pin SO (150 mils), 8-Pin µSOP, and 3-Pin TO-92 Packages

Technical Attributes

Description
Value
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Mounting
Surface Mount
Max Processing Temp
260
Operating Temperature
-55 to 125 °C
Interface Type
Serial (1-Wire)
Function
Temp Sensor
Accuracy
±2(Max) °C
MSL Level
1
Screening Level
Military
Supplier Package
uMAX
Product Dimensions
3.1(Max) x 3.1(Max) x 0.95(Max)
Lead Finish
Matte Tin
Operating Supply Voltage
3 to 5.5 V
Output Type
Digital
Resolution
12 Bit
Pin Count
8

ECCN / UNSPSC

Description
Value
ECCN:
EAR99
SCHEDULE B:
8542390000
HTSN:
8542390001
UNSPSC:
32101600
UNSPSC VERSION:
V15.1101

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