DS1920-F5 - iButton Thermometer by Dallas Semiconductor

The DS1920 provides direct-to-digital 9-bit temperature readings over a range of -55°C to +100°C in 0.5° increments. The iButton communicates with a processor using the 1-Wire protocol through a hardware port interface. The port interface provides both the physical link and handles the communication protocols that enable the processor to access iButton resources with simple commands. Two bytes of EEPROM can be used either to set alarm triggers or for storing user data. Armored in an iButton, the thermometer can measure temperatures in demanding environments. Like every other iButton, the DS1920 has a unique serial number. The 1-Wire interface reduces data output, address, and power to one line. A unique serial number allows multiple 1920s to share the same bus, with many sensors placed at different sites reporting to a single port on a processor. Multidropped DS1920s make the lowest-power temperature sensing network available inside buildings, equipment, or machinery and in process monitoring and control. With appropriate accessories the DS1920 easily attaches to an object or circuit board.

Key Features

Digital thermometer measures temperatures from -55°C to +100°C, typically in 0.2 seconds.
Accuracy ±0.5°C within 0°C to +70°C.
No calibration or reference required.
Zero standby power.
Power supplied through data contact.
Access to internal counters allows increased resolution through interpolation.
Two bytes of EEPROM for use as alarm triggers or user memory.
Built-in network controller.
Alarm search directly identifies devices sensing alarming temperatures.
Device-generated 8-bit CRC for on-the-fly data integrity check.

iButton and 1-Wire are registered trademarks of Dallas Semiconductor Corporation.

Support / Documentation

Downloadable manuals, knowledgebase articles, and more can be found by searching our technical support website.

Purchasing Information

Product Options

Version

DS1920-F5+ (RoHS Compliant) - Add $0.00
112 available for immediate shipment.

DS1920-F5 (original version - Not RoHS compliant) - Add $0.00
Replaced by RoHS Compliant Version

Volume Price
Quantity	Price Each
1-9	$6.69
10-24	$6.02
25-49	$5.69
50-99	$5.12
100-999	$4.33
1000+	$3.31

Shipping Weight: 0.01 pounds

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