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家用电器温度感器,家电用温度传感器

 Maxim数字温度传感器

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  MAXIM是美信公司的英文缩写,美信公司英文全称为Maxim Integrated Products,是全球最好的模拟信号和混合信号半导体公司。Maxim提供专用温度传感器以及将传感器的电信号转换成有用信息的各种产品。

温度传感器IC充分利用了硅PN结所具备的线性度和预知的温度特性等优势。由于这些IC都是采用常规半导体工艺制成的有源电路,可提供各种外形封装。它们具备许多功能,例如:数字接口、ADC输入、风扇控制等,这是其它技术无法提供的。温度传感器IC的工作温度范围可低至-55℃、高达+125℃,部分产品的温度上限可以达到+150℃左右。以下介绍了常见的温度传感器IC。

模拟温度传感器

模拟温度传感器IC将温度转换成电压,有些情况下则转换成电流。最简单的电压输出模拟温度传感器只有三个有效端:地、电源输入和信号输出。其它具有增强功能的模拟传感器提供更多的输入或输出,例如比较器或电压基准输出。模拟温度传感器利用双极型晶体管的温度特性产生与温度成比例的输出电压。对这一电压信号进行放大并施加一定的偏置,可以使传感器输出电压与管芯温度建立适当的变化关系,获得较高的温度测量精度。例如,DS600业内精度最高的模拟温度传感器,在-20℃至+100 ℃温 度 范 围 内 保 证 误 差 小 于±0.5℃。

本地数字温度传感器


将模拟温度传感器与ADC集成在一起,即可形成直接输出数字信号的温度传感器。这种器件通常称为数字温度传感器或本地数字温度传感器。“本地”表示传感器测量的是自身温度。这种工作方式相对于远端传感器,后者用于测量外部IC或分立晶体管的温度。基本的数字温度传感器只是简单地测量温度,温度数据通过各种特定接口读取, 接口类型包括: SPI/3线、I2C、1-Wire和PWM。复杂的数字传感器具备更多功能,例如: 高温/低温报警输出、设置触发门限
的寄存器及EEPROM等。Maxim提供多款本地数字温度传感器,包括DS7505和DS18B20,能够在较宽的温度范围内保证±0.5℃的精度。

远端数字温度传感器

远端数字温度传感器又称为远端传感器或二极管温度传感器。远端传感器用于测量外部晶体管的温度,可以采用分立晶体管,也可以采用集成在另一IC内部的晶体管。微处理器、现场可编程门阵列(FPGA)及ASIC往往包含一个或多个温度传感器,通常称为温度二极管,与远端温度传感器具有一个重要优势:可以利用单片IC监测多点温度。

Part Number Description Sensor Type Alarm Output Functions Interface Remote Chan. Accuracy (±°C)  Parasite Pwr. Temp. Thresh. Temp. Resolution (bits)  Multi Droppable Oper. Temp. (°C) 
MAX31820 1-Wire Ambient Temperature Sensor Local - - 1-Wire - 0.5 Yes Programmable (NV) 9 ,10 ,11 ,12 Yes -55 to +125
MAX31820PAR 1-Wire Parasite Powered Ambient Air Sensor Local - - 1-Wire - 0.5 Yes Programmable (NV) 9 ,10 ,11 ,12 Yes -55 to +100
MAX31851 1-Wire Thermcouple to Digital Converter Remote - Thermocouple-to-Digital Converter 1-Wire Single 2 Yes - 14 - -40 to +125
MAX31850 1-Wire Thermcouple to Digital Converter Remote - Thermocouple-to-Digital Converter 1-Wire Single 2 Yes - 14 - -40 to +125
MAX31740 Ultra-simple Fan Speed Controller Remote - - - - - - - - - -
MAX31726 ±0.5°C Local I2C Temperature Sensor with Reset Local Overt Hardware Reset 2-Wire/I2C/SMBus - 0.5 No Programmable 16 Yes -55 to +150
MAX31725 ±0.5°C Local I2C Temperature Sensor Local Overt - 2-Wire/I2C/SMBus - 0.5 No Programmable 16 Yes -55 to +150
MAX31865 RTD-to-Digital Converter Remote - RTD-to-Digital Converter SPI Single 0.5 No - 15 - -40 to +125
MAX31826 1-Wire Digital Temperature Sensor with 1Kbit Lockable EEPROM Local - Memory 1-Wire - 0.5 Yes - 12 Yes -55 to +125
MAX31855 Cold Junction Compensated Thermocouple to Digital Converter Remote - Thermocouple-to-Digital Converter SPI Single 2 No - 14 - -40 to +125
MAX31722 Digital Thermometers and Thermostats with SPI/3-Wire Interface Local Overt Memory ,Single Temperature Alarm ,Standalone Thermostat 3-Wire/SPI ,3-Wire - 2 No Programmable (NV) 12 - -55 to +125
MAX31723 Digital Thermometers and Thermostats with SPI/3-Wire Interface Local Overt Memory ,Single Temperature Alarm ,Standalone Thermostat 3-Wire/SPI ,3-Wire - 0.5 No Programmable (NV) 12 - -55 to +125
MAX6581 ±1°C Accurate 8-Channel Temperature Sensor Remote Alert ,Overt Dual Temperature Alarms ,Multi-Channel Temperature Monitor ,Remote & Local Sensor 2-Wire/I2C/SMBus Seven 1 No Programmable 8 ,11 - -40 to +125
MAX6694 5-Channel Precision Temperature Monitor with Beta Compensation Remote Alert ,Overt Beta Compensation ,Dual Temperature Alarms ,Dual Temperature Sensor ,Remote & Local Sensor 2-Wire/I2C/SMBus Quad 1.5 No Programmable 8 ,11 - -40 to +125
MAX6693 7-Channel Precision Temperature Monitor with Beta Compensation Remote Alert ,Overt Beta Compensation ,Dual Temperature Alarms ,Dual Temperature Sensor ,Remote & Local Sensor 2-Wire/I2C/SMBus Six 1.5 No Programmable 8 ,11 - -40 to +125
DS7505 High-Precision DS75 Compatible Digital Thermometer and Thermostat Local - Standalone Thermostat 2-Wire/I2C/SMBus - 0.5 No Programmable (NV) 9 ,10 ,11 ,12 Yes -55 to +125
MAX6622 5-Channel Precision Temperature Monitor Remote Alert ,Overt Dual Temperature Alarms ,Multi-Channel Temperature Monitor ,Remote & Local Sensor 2-Wire/I2C/SMBus Quad 1 No Programmable 8 ,11 - -40 to +125
MAX6636 7-Channel Precision Temperature Monitor Remote Alert ,Overt Dual Temperature Alarms ,Multi-Channel Temperature Monitor ,Remote & Local Sensor 2-Wire/I2C/SMBus Six 1 No Programmable 8 ,11 - -40 to +125
DS75LX Digital Thermometer and Thermostat with Extended Addressing Local - - 2-Wire/I2C/SMBus - 2 No Programmable 9 ,10 ,11 ,12 Yes -55 to +125
DS28EA00 1-Wire Digital Thermometer with Sequence Detect and PIO Local - Chain Mode Function 1-Wire - 0.5 Yes Programmable (NV) 9 ,10 ,11 ,12 Yes -40 to +85
MAX6604 Temperature sensor for memory modules Local Alert - 2-Wire/I2C/SMBus - 1 No Programmable 11 Yes -20 to +125
MAX6689 Seven-Channel Temperature Monitor Remote Alert ,Overt Dual Temperature Alarms ,Multi-Channel Temperature Monitor ,Remote & Local Sensor 2-Wire/I2C/SMBus Six 1 No Programmable 11 - -40 to +125
MAX6602 Five-Channel Temperature Monitor Remote Alert ,Overt Dual Temperature Alarms ,Multi-Channel Temperature Monitor ,Remote & Local Sensor 2-Wire/I2C/SMBus Quad 1 No Programmable 11 - -40 to +125
MAX6603 2-Channel Platinum RTD-to-Voltage Signal Conditioner Remote - RTD to Voltage Signal Conditioner Analog Dual 6 No - - - -40 to +125
MAX6699 Five-Channel Temperature Monitor Remote Alert ,Overt Dual Temperature Alarms ,Multi-Channel Temperature Monitor ,Remote & Local Sensor 2-Wire/I2C/SMBus Quad 1 No Programmable 11 - -40 to +125
DS75LV Low Voltage Digital Temperature Sensor Local - - 2-Wire/I2C/SMBus - 2 No Programmable 9 ,10 ,11 ,12 Yes -55 to +125
MAX6698 7-Channel Precision Remote-Diode, Thermistor, and Local Temperature Monitor Remote Alert ,Overt Multi-Channel Temperature Monitor ,Thermistor-to-Digital Converter 2-Wire/I2C/SMBus Six 1 No Programmable 11 - -40 to +125
MAX6697 Seven-Channel Temperature Monitor Remote Alert ,Overt Dual Temperature Alarms ,Multi-Channel Temperature Monitor ,Remote & Local Sensor 2-Wire/I2C/SMBus Six 1 No Programmable 11 - -40 to +125
DS1825 Programmable 1-Wire Digital Thermometer with 4-bit Address Local - - 1-Wire - 0.5 Yes Programmable (NV) 9 ,10 ,11 ,12 - -55 to +125
MAX7500 Digital Temperature Sensor with Bus Lock-up Protection Local - - 2-Wire/I2C/SMBus - 2 No Programmable - Yes -55 to +125
MAX7503 Digital Temperature Sensor and Thermal Watchdog Local Overt Standalone Thermostat 2-Wire/I2C/SMBus - 2 No Programmable 11 Yes -55 to +125
MAX7502 Digital Temperature Sensor prevents bus lock up Local Overt Standalone Thermostat 2-Wire/I2C/SMBus - 2 No Programmable 11 Yes -55 to +125
MAX7501 Digital Temperature Sensor and Thermal Watchdog Local Overt Standalone Thermostat 2-Wire/I2C/SMBus - 2 No Programmable 11 Yes -55 to +125
MAX7504 Digital Temperature Sensor and Thermal Watchdog Local Overt Single Temperature Alarm 2-Wire/I2C/SMBus - 2 - - - Yes -55 to +125
DS620 Low-Voltage, +/-0.5°C Accuracy Temperature Sensor and Thermostat Local - Standalone Thermostat 2-Wire/I2C/SMBus - 0.5 No Programmable (NV) 10 ,11 ,12 ,13 Yes -55 to +125
DS600 ±0.5°C (Max) Accurate Analog Output Temperature Sensor Local - Standalone Thermostat Analog - 0.5 No Programmable - - -40 to +125
MAX6695 Dual Remote Temperature Sensor with SMBus Interface Remote Alert ,Overt Dual Temperature Monitor ,Remote & Local Sensor 2-Wire/I2C/SMBus Dual 1 No Programmable - - -40 to +125
MAX6696 Dual Temperature Sensor with SMBus Interface Remote Alert ,Overt Dual Temperature Sensor 2-Wire/I2C/SMBus Dual 1 No Programmable - - -40 to +125
MAX6642 ±1°C, SMBus-Compatible Remote/Local Temperature Sensor with Overtemperature Alarm Remote Alert Remote & Local Sensor ,Single Temperature Alarm 2-Wire/I2C/SMBus Single 1 No Programmable 10 - -40 to +125
MAX6647 145°C, SMBus-Compatible Remote/Local Temperature Sensors with Overtemperature Alarms Remote Alert ,Overt Dual Temperature Alarms ,Remote & Local Sensor 2-Wire/I2C/SMBus Single 0.8 No Programmable 11 - -55 to +125
MAX6646 145°C, SMBus-Compatible Remote/Local Temperature Sensors with Overtemperature Alarms Remote Alert ,Overt Dual Temperature Alarms ,Remote & Local Sensor 2-Wire/I2C/SMBus Single 0.8 No Programmable 11 - -55 to +125
DS1726 3-Wire ±1°C Accurate Digital Thermometer and Thermostat Local - Dual Output Temperature Switch ,Dual Temperature Alarms ,Standalone Thermostat ,Temperature Switch/Temperature Comparator 3-Wire ,Logic - 1 No Programmable (NV) 9 ,10 ,11 ,12 - -55 to +125
DS1626 3-Wire ±0.5° Accurate Digital Thermometer and Thermostat Local - Dual Output Temperature Switch ,Dual Temperature Alarms ,Standalone Thermostat ,Temperature Switch/Temperature Comparator 3-Wire ,Logic - 0.5 No Programmable (NV) 9 ,10 ,11 ,12 - -55 to +125
MAX6673 PWM-Output Temperature Sensor in SC70 Package with a Push-Pull Output Local - - PWM - 3 No - - - -40 to +125
MAX6672 PWM-Output Temperature Sensor in SC70 Package with an Open Drain Output Local - - PWM - 3 No - - - -40 to +125
MAX6612 High-Slope, Low-Power, Analog Temperature Sensor in SC70 Package Local - - Analog - 1.2 No - - - -40 to +125
MAX6692 ±0.8°C, SMBus-Compatible Remote/Local Temperature Sensors with Overtemperature Alarms Remote Alert ,Overt Dual Temperature Alarms ,Remote & Local Sensor 2-Wire/I2C/SMBus Single 0.8 No Programmable 10 - -55 to +125
MAX6648 ±0.8°C, SMBus-Compatible Remote/Local Temperature Sensors with Overtemperature Alarms Remote Alert ,Overt Dual Temperature Alarms ,Remote & Local Sensor 2-Wire/I2C/SMBus Single 0.8 No Programmable 10 - -55 to +125
MAX6649 145°C, SMBus-Compatible Remote/Local Temperature Sensors with Overtemperature Alarms Remote Alert ,Overt Dual Temperature Alarms ,Remote & Local Sensor 2-Wire/I2C/SMBus Single 0.8 No Programmable 11 - -55 to +125
DS60 Analog Temperature Sensor Local - Standalone Thermostat Analog - - No - - - -40 to +125
MAX6613 Low-Voltage Analog Temperature Sensors in SC70 and SOT23 Packages Local - - Analog - 4 No - - - -55 to +150
MAX6610 Precision, Low-Power, SOT23 Temperature Sensor and Voltage Reference Local - Voltage Reference Analog - 1 No - - - -40 to +125
MAX6611 Precision, Low-Power, SOT23 Temperature Sensor and Voltage Reference Local - Voltage Reference Analog - 1 No - - - -40 to +125
MAX6681 ±1°C Fail-Safe Remote/Local Temperature Sensors with SMBus Interface Remote Alert ,Overt Fan Controller ,Remote & Local Sensor 2-Wire/I2C/SMBus Single 1 No Programmable 11 Yes -55 to +125
MAX6680 ±1°C Fail-Safe Remote/Local Temperature Sensors with SMBus Interface Remote Alert ,Overt Fan Controller ,Remote & Local Sensor 2-Wire/I2C/SMBus - 1 No Programmable 11 Yes -55 to +125
MAX6682 Thermistor-to-Digital Converter Remote - Thermistor-to-Digital Converter 3-Wire/SPI Single 0.5 No - 10 - -55 to +125
MAX6691 Four-Channel Thermistor Temperature-to-Pulse-Width Converter Remote - Thermistor-to-Digital Converter PWM Quad 1 No - - - -55 to +125
DS1631 High Precision Digital Thermometer and Thermostat Local - - 2-Wire/I2C/SMBus - 0.5 No Programmable (NV) 9 ,10 ,11 ,12 Yes -55 to +125
DS1731 ±1°C Digital Thermometer and Thermostat Local - - 2-Wire/I2C/SMBus - 1 No Programmable (NV) 9 ,10 ,11 ,12 Yes -55 to +125
MAX6683 Low Voltage Temperature Sensor and System Monitor in 10-Pin µMax Local Alert Voltage Monitor 2-Wire/I2C/SMBus - 2 No Programmable 11 Yes -40 to +125
MAX6690 2° Accurate Remote/Local Temperature Sensor with SMBus Serial Interface Remote Alert Remote & Local Sensor 2-Wire/I2C/SMBus Single 2 No Programmable 11 Yes -55 to +125
MAX6662 12-Bit Plus Sign Temperature Sensor with SPI-Compatible Serial Interface Local Alert ,Overt - 3-Wire/SPI - 1 No Programmable 13 - -55 to +125
MAX6633 12-Bit Plus Sign Temperature Sensor with I2C/SMBus-Compatible Serial Interface Local - - 2-Wire/I2C/SMBus - 1 No - 13 Yes -55 to +150
MAX6634 12-Bit Plus Sign Temperature Sensor with I2C/SMBus-Compatible Serial Interface Local Alert - 2-Wire/I2C/SMBus - 1 No Programmable 13 Yes -55 to +150
MAX6635 12-Bit Plus Sign Temperature Sensor with I2C/SMBus-Compatible Serial Interface Local Alert ,Overt - 2-Wire/I2C/SMBus - 1 No Programmable 13 Yes -55 to +150
MAX6667 High-Accuracy PWM-Output Temperature Sensor Local - - PWM - 2.5 No - - - -40 to +125
MAX6655 Dual Remote/Local Temperature Sensor and Four-Channel Voltage Monitor Remote Alert ,Overt Remote & Local Sensor ,Voltage Monitor 2-Wire/I2C/SMBus Dual 1 No Programmable 11 Yes -55 to +125
MAX6656 Dual Remote/Local Temperature Sensor and Four-Channel Voltage Monitor Remote Alert ,Overt Remote & Local Sensor ,Voltage Monitor 2-Wire/I2C/SMBus Dual 1 No Programmable 11 Yes -55 to +125
MAX6628 Remote SPI-Compatible Temperature Sensor with 1-Degree Accuracy in SOT23 Remote - - 3-Wire/SPI Single 1 No - 13 - -55 to +125
MAX6627 Remote SPI-Compatible Temperature Sensor with 1-Degree Accuracy in SOT23 Remote - - 3-Wire/SPI Single 1 No - 13 - -55 to +125
MAX6607 Low-Voltage Analog Temperature Sensors in SC70 and SOT23 Packages Local - - Analog - 0.7 No - - - -55 to +125
MAX6608 Low-Voltage Analog Temperature Sensors in SC70 and SOT23 Packages Local - - Analog - 0.7 No - - - -20 to +85
MAX6629 12-Bit + Sign Digital Temperature Sensors with Serial Interface Local - - 3-Wire/SPI - 3.2 No - 12 - -55 to +125 ,-55 to +150
MAX6630 12-Bit + Sign Digital Temperature Sensors with Serial Interface Local - - 3-Wire/SPI - 3.2 No - 12 - -55 to +125 ,-55 to +150
MAX6631 12-Bit + Sign Digital Temperature Sensors with Serial Interface Local - - 3-Wire/SPI - 3.2 No - 12 - -55 to +125 ,-55 to +150
MAX6632 12-Bit + Sign Digital Temperature Sensors with Serial Interface Local - - 3-Wire/SPI - 3.2 No - 12 - -55 to +125 ,-55 to +150
MAX6657 ±1°C, SMBus-Compatible Remote/Local Temperature Sensors with Overtemperature Alarms Remote Alert ,Overt Remote & Local Sensor 2-Wire/I2C/SMBus Single 1 No Programmable 11 Yes -55 to +125
MAX6658 ±1°C, SMBus-Compatible Remote/Local Temperature Sensors with Overtemperature Alarms Remote Alert ,Overt Remote & Local Sensor 2-Wire/I2C/SMBus Single 1 No Programmable 11 Yes -55 to +125
MAX6659 ±1°C, SMBus-Compatible Remote/Local Temperature Sensors with Overtemperature Alarms Remote Alert ,Overt Remote & Local Sensor 2-Wire/I2C/SMBus Single 1 No Programmable 11 Yes -55 to +125
MAX6575 SOT Temperature Sensor with Multidrop Single Wire Digital Interface Local - - Pulse Delay - 3 No - - Yes -55 to +125
DS18S20 1-Wire Digital Thermometer Local - - 1-Wire - 0.5 Yes Programmable (NV) 9 Yes -55 to +125
DS18S20-PAR Parasite-Power Digital Thermometer Local - - 1-Wire - 0.5 Yes Programmable (NV) 9 Yes -55 to +100
DS1822 Econo 1-Wire Digital Thermometer Local - - 1-Wire - 2 Yes Programmable (NV) 9 ,10 ,11 ,12 Yes -55 to +125
DS1822-PAR Econo Parasite-Power Digital Thermometer Local - - 1-Wire - 2 Yes Programmable (NV) 9 ,10 ,11 ,12 Yes -55 to +100
DS18B20 High-Precision 1-Wire Digital Thermometer Local - - 1-Wire - 0.5 Yes Programmable (NV) 9 ,10 ,11 ,12 Yes -55 to +125
DS18B20-PAR High-Precision Parasite-Power Digital Thermometer Local - - 1-Wire - 0.5 Yes Programmable (NV) 9 ,10 ,11 ,12 Yes -55 to +100
MAX1099 10-Bit, Serial-Output Temperature Sensors with Five-Channel ADC Local - - 3-Wire/SPI - 1 No - 10 - -40 to +85
MAX1299 12-Bit, Serial-Output Temperature Sensors with Five-Channel ADC Local - - 3-Wire/SPI - 1 No - 12 - -40 to +85
MAX1298 12-Bit, Serial-Output Temperature Sensors with Five-Channel ADC Local - - 3-Wire/SPI - 1 No - 12 - -40 to +85
DS1821 Digital Thermometer or Standalone Thermostat Local - Standalone Thermostat ,Temperature Switch/Temperature Comparator 1-Wire Non-Network ,Logic - 1 No Programmable (NV) 8 - -55 to +125
DS1629 Digital Thermometer and Real Time Clock/Calendar Local - RTC 2-Wire/I2C/SMBus - 2 No Programmable (NV) 9 - -55 to +125
DS75 Digital Thermometer and Thermostat Local - - 2-Wire/I2C/SMBus - 2 No Programmable 9 ,10 ,11 ,12 Yes -55 to +125
DS1721 Econo Digital Thermometer and Thermostat Local - - 2-Wire/I2C/SMBus - 1 No Programmable 9 ,10 ,11 ,12 Yes -55 to +125
DS1775 Tiny Digital Thermometer and Thermostat Local - - 2-Wire/I2C/SMBus - 2 No Programmable 9 ,10 ,11 ,12 Yes -55 to +125
DS1624 Digital Thermometer and 256-Byte EEPROM Local - Memory 2-Wire/I2C/SMBus - 0.5 No - 13 Yes -55 to +125
DS1722 3-Wire/SPI Digital Thermometer Local - - 3-Wire/SPI - 2 No - 8 ,9 ,10 ,11 ,12 - -55 to +125
DS1780 CPU Peripheral Monitor Local - Fan Controller ,Voltage Monitor 2-Wire/I2C/SMBus - 2 No Programmable 9 Yes -40 to +125
MAX6652 Temperature Sensor and System Monitor in 10-Pin µMax Local Alert Multi-Channel Temperature Monitor 2-Wire/I2C/SMBus - 2 No Programmable 8 Yes -40 to +125
MAX6654 1° Accurate Remote/Local Temperature Sensor with SMBus Serial Interface Remote Alert Remote & Local Sensor 2-Wire/I2C/SMBus Single 1 No - 11 Yes -55 to +125
MAX6625 9-Bit Temperature Sensor with I2C Interface in SOT23 Local Overt - 2-Wire/I2C/SMBus - 3 No Programmable 9 Yes -40 to +125
MAX6626 12-Bit Temperature Sensor with I2C Interface in SOT23 Local Overt - 2-Wire/I2C/SMBus - 3 No Programmable 12 Yes -55 to +125
MAX6605 Low-Power Analog Temperature Sensor in SC70 Local - - Analog - 1 No - - - -55 to +125
MAX1989 Five-Channel Temperature Sensor with SMBus Serial Interface Remote Alert Remote & Local Sensor 2-Wire/I2C/SMBus Quad 2 No - 8 - -55 to +125
MAX1805 Three-Channel Temperature Sensor with SMBus Serial Interface Remote Alert Remote & Local Sensor 2-Wire/I2C/SMBus Dual 2 No - 8 - -55 to +125
MAX1668 Five-Channel Temperature Sensor with SMBus Serial Interface Remote Alert Remote & Local Sensor 2-Wire/I2C/SMBus Quad 2 No - 8 - -55 to +125
MAX6577 SOT Temperature Sensor with Frequency Output Local - - Freq. µ Temp. - 3 No - - - -55 to +125
MAX6576 SOT Temperature Sensor with Period Output Local - - Period µ Temp. - 3 No - - - -55 to +125
MAX1619 Remote/Local Temperature Sensor with Dual-Alarm Outputs and SMBus Serial Interface Remote Alert ,Overt Remote & Local Sensor 2-Wire/I2C/SMBus Single 3 No Programmable 8 - -40 to +125
MAX1617A Remote/Local Temperature Sensor with SMBus Serial Interface Remote Alert Remote & Local Sensor 2-Wire/I2C/SMBus Single 3 No - 8 - -40 to +125
DS1621 2-wire 0.5°C Accurate Temperature Sensor and Thermostat Local - Single Temperature Alarm 2-Wire/I2C/SMBus - 0.5 No Programmable (NV) 9 ,10 ,11 ,12 Yes -55 to +125
DS1620 3-Wire 0.5°C Accurate Temperature Sensor and Thermostat Local - Dual Output Temperature Switch ,Dual Temperature Alarms ,Standalone Thermostat ,Temperature Switch/Temperature Comparator 3-Wire ,Logic - 0.5 No Programmable (NV) 9 - -55 to +125

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