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DS18S20Z Datasheet(PDF) 1 Page - Maxim Integrated Products |
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DS18S20Z Datasheet(HTML) 1 Page - Maxim Integrated Products |
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1 / 21 page  Pin Configurations General Description The DS18S20 digital thermometer provides 9-bit Celsius temperature measurements and has an alarm function with nonvolatile user-programmable upper and lower trig- ger points. The DS18S20 communicates over a 1-Wire bus that by definition requires only one data line (and ground) for communication with a central microprocessor. In addition, the DS18S20 can derive power directly from the data line (“parasite power”), eliminating the need for an external power supply. Each DS18S20 has a unique 64-bit serial code, which allows multiple DS18S20s to function on the same 1-Wire bus. Thus, it is simple to use one microprocessor to control many DS18S20s 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. Applications ● Thermostatic Controls ● Industrial Systems ● Consumer Products ● Thermometers ● Thermally Sensitive Systems Benefits and Features ● Unique 1-Wire® Interface Requires Only One Port Pin for Communication ● Maximize System Accuracy in Broad Range of Thermal Management Applications • Measures Temperatures from -55°C to +125°C (-67°F to +257°F) • ±0.5°C Accuracy from -10°C to +85°C • 9-Bit Resolution • No External Components Required ● Parasite 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) and 3-Pin TO-92 Packages Ordering Information appears at end of data sheet. 1-Wire is a registered trademark of Maxim Integrated Products, Inc. 19-5474; Rev 3; 4/15 BOTTOM VIEW 2 N.C. N.C. VDD DQ N.C. N.C. N.C. GND DS18S20 SO (150 mils) (DS18S20Z) + 1 4 3 7 8 5 6 DS18S20 1 2 3 GND DQ VDD 1 1 2 3 TOP VIEW TO-92 (DS18S20) DS18S20 High-Precision 1-Wire Digital Thermometer |
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