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|DS18B20 from DALLAS/MAXIM, MAXIM - Dallas Semiconductor 20000pcs , TO-92,High-Precision 1-Wire Digital Thermometer|
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Applications with Multidrop CapabilityDS18B20 Programmable Resolution 1-Wire Digital Thermometer General Description Beneits and Electrical Characteristics(-55°C to +125°C; V = 3.0V to 5.5V)DD PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITSSupply Voltage V Local power (Note 1) +3.0 +5.5 VDDParasite power +3.0 +5.5Pullup Supply Voltage V (Notes 1, 2) VPULocal power +3.0 VDD-10°C to +85°C ±0.5Thermometer Error t (Note 3) °CERR-55°C to +125°C ±2Input Logic-Low V (Notes 1, 4, 5) -0.3 +0.8 VILThe lower Local power +2.2Input Logic-High V (Notes 1,6) of 5.5 or VIHParasite power +3.0V + 0.3DDSink Current I V = 0.4V 4.0 mAL I/OStandby Current I (Notes 7, 8) 750 1000 nADDSActive Current I V = 5V (Note 9) 1 1.5 mADD DDDQ Input Current I (Note 10) 5 µADQDrift (Note 11) ±0.2 °CNote 1: All voltages are referenced to ground. Note 2: The Pullup Supply Voltage specification assumes that the pullup device is ideal, and therefore the high level of the pullup is equal to V . In order to meet the V spec of the DS18B20, the actual supply rail for the strong pullup transis-PU IHtor must include margin for the voltage drop across the transistor when it is turned on; thus: V = V + PU_ACTUAL PU_IDEALV . TRANSISTORNote 3: See typical performance curve in Figure 1.Note 4: Logic-low voltages are specified at a sink current of 4mA.Note 5: To guarantee a presence pulse under low voltage parasite power conditions, V may have to be reduced to as low as ILMAX0.5V. Note 6: Logic-high voltages are specified at a source current of 1mA.Note 7: Standby current specified up to +70°C. Standby current typically is 3µA at +125°C.Note 8: To minimize I , DQ should be within the following ranges: GND ≤ DQ ≤ GND + 0.3V or V – 0.3V ≤ DQ ≤ V .DDS DD DDNote 9: Active current refers to supply current during active temperature conversions or EEPROM writes.Note 10: DQ line is high (“high-Z” state).Note 11: Drift data is based on a 1000-hour stress test at +125°C with V = 5.5V.DDMaxim Integrated │ 2www.maximintegrated.comDownloaded from: http://www.ic-phoenix.com/stock/DS18B20 Programmable Resolution 1-Wire Digital Thermometer AC Applications that can benefit from this feature include • Each Device Has a Unique 64-Bit Serial Code HVAC environmental controls, temperature monitoring Stored in On-Board ROMsystems inside buildings, equipment, or machinery, and ● Flexible User-Definable Nonvolatile (NV) Alarm Settings process monitoring and control systems.with Alarm Search Command Identifies Devices with Temperatures Outside Programmed LimitsElectrical Characteristics–NV Memory(-55°C to +125°C; V = 3.0V to 5.5V)DD PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITSNV Write Cycle Time t 2 10 msWREEPROM Writes N -55°C to +55°C 50k writesEEWREEPROM Data Retention t -55°C to +55°C 10 yearsEEDRAC
|DS18B20. ,High-Precision 1-Wire Digital ThermometerApplications● Thermostatic Controls● Available in 8-Pin SO (150 mils), 8-Pin µSOP, and ● Industrial ..|
DS18B20/ ,High-Precision 1-Wire Digital ThermometerFeatures®The DS18B20 digital thermometer provides 9-bit to 12-bit ● Unique 1-Wire Interface Require ..
DS18B20+ ,Programmable Resolution 1-Wire Digital ThermometerElectrical Characteristics–NV Memory(-55°C to +125°C; V = 3.0V to 5.5V)DD PARAMETER SYMBOL CONDITIO ..
DS18B20+/ ,High-Precision 1-Wire Digital ThermometerElectrical Characteristics(-55°C to +125°C; V = 3.0V to 5.5V)DD PARAMETER SYMBOL CONDITIONS MIN TYP ..
DS18B20-PAR ,1-Wire Parasite-Power Digital ThermometerELECTRICAL CHARACTERISTICS sections of this data sheet). However, when the DS18B20-PAR is performi ..