Products > Sensors, Transducers > MAX31820MCR+
  • MAX31820MCR+

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Temperature Sensor IC, Serial, Digital, ± 2°C, -55 °C, 125 °C, TO-92, 3 Pins

  • Package/Case :
  • TO-92
  • Product Categories :
  • IC Temperature Sensors
  • RoHs Status:
  • Lead free / RoHS Compliant
  • Life Cycle:
  • Production
  • In-stock:
  • 899


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MAX31820MCR+ Product Details

The MAX31820MCR+ is a 1-wire digital ambient temperature sensor in 3 pin TO-92 package. It provides 9bit to 12bit celsius temperature measurements with ±0.5°C accuracy over 10°C to 45°C temperature range. The device can derive power directly from data line (parasite power) which eliminates the need for an external power supply. Requiring few pins enables the device to be placed in 3-pin TO-92 package. The form factor of this package allows the device to be placed above board and thus measures ambient temperature of system. Each MAX31820 has a unique 64bit serial code which allows multiple MAX31820 devices to function on same 1-wire bus. Therefore, it is simple to use one microprocessor to control many devices distributed over a large area. The MAX31820 is used in HVAC environmental controls, temperature monitoring systems inside buildings, equipment or machinery, process monitoring and control systems, thermostatic controls, thermometers and in any thermally sensitive systems.


  • Supply voltage range from 3V to 3.7V
  • Unique 1-wire interface requires only one port pin for communication with central microprocessor
  • ±2°C accuracy over entire -55°C to 125°C operating range
  • Multidrop capability simplifies distributed temperature sensing applications
  • Requires no external components
  • Converts temperature to 12bit digital word in 750ms
  • User definable non-volatile (NV) alarm settings
  • Alarm search command identifies & addresses devices whose temperature is outside programmed limits
  • Software compatible with DS1822 and DS18B20 devices
  • Standby current of 750nA, active current of 1mA and sink current of 4mA


Sensing & Instrumentation, Industrial, Consumer Electronics, Automation & Process Control

MAX31820MCR+ Block Diagram
(Picture: Diagram)

Technical Parameters

  • IC Output Type
  • Digital
  • Sensing Accuracy Range
  • ± 2°C
  • Sensing Temperature Min
  • -55°C
  • Sensing Temperature Max
  • 125°C
  • Sensor Case Style
  • TO-92
  • No. of Pins
  • 3Pins
  • Supply Voltage Min
  • 3V
  • Supply Voltage Max
  • 3.7V
  • Product Range
  • -
  • Automotive Qualification Standard
  • -
  • MSL
  • MSL 1 - Unlimited

MAX31820MCR+ Documents

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Estimated Delivery Time: Aug 09 - Aug 14 days (choose Expedited at checkout).

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  • Shipping Type
  • Ship Fee
  • Lead Time
  • $20.00-$40.00 (0.50 KG)
  • 2-5 days
  • $20.00-$40.00 (0.50 KG)
  • 3-7 days
  • $20.00-$45.00 (0.50 KG)
  • 2-5 days
  • $25.00-$65.00 (0.50 KG)
  • 2-5 days
  • $25.00-$45.00 (0.50 KG)
  • 5-14 days
  • $2.00-$3.00 (0.10 KG)
  • 7-30 days

Processing Time:Shipping fee depend on different zone and country.


  • Terms of payment
  • Hand Fee
  • Payment Site
  • charge US$30.00 banking fee.
  • charge 4.0% service fee.
  • charge 3.5% service fee.
  • charge US$0.00 banking fee.
  • charge US$0.00 banking fee.

We provide high quality products, thoughtful service and after sale guarantee

  • We have rich products, can meet your various needs.

    We have rich products, can meet your various needs.

  • Minimum order quantity starts from 1pcs.

    Minimum order quantity starts from 1pcs.

  • Lowest international shipping fee starts from US$2.00.

    Lowest international shipping fee starts from US$2.00.

  • 90 days quality guarantee for all products.

    90 days quality guarantee for all products.


  • Step1:Product

    Step1: Products

  • Step2:Vacuum packaging

    Step2: Vacuum Packaging

  • Step3:Anti-static bag

    Step3: Anti-Static Bag

  • Step4:Individual packaging

    Step4: Individual Packaging

  • Step5:Packaging boxes

    Step5: Packaging Boxes

  • Step6:bar-code shipping tag

    Step6: Bar-Code Shipping Tag

All the products will packing in anti-staticbag. Ship with ESD antistatic protection.

Outside ESD packing’s lable will use ourcompany’s information: Part Mumber, Brand and Quantity.

We will inspect all the goods before shipment,ensure all the products at good condition and ensure the parts are new originalmatch datasheet.

After all the goods are ensure no problems afterpacking, we will packing safely and send by global express. It exhibitsexcellent puncture and tear resistance along with good seal integrity.

Jotrin ESD packing


1.We provide 90 days warranty.

2.If some of the items you received aren't of perfect quality, we would resiponsibly arrange your refund or replacement. But the items must remain their orginal condition.


Q: How does Jotrin guarantee that MAX31820MCR+ is the original manufacturer or agent of MAXIM?
We have a professional business development department to strictly test and verify the qualifications of MAXIM original manufacturers and agents. All MAXIM suppliers must pass the qualification review before they can publish their MAX31820MCR+ devices; we pay more attention to the channels and quality of MAX31820MCR+ products than any other customer. We strictly implement supplier audits, so you can purchase with confidence.
Q: How to find the detailed information of MAX31820MCR+ chips? Including MAXIM original factory information, IC Temperature Sensors application, MAX31820MCR+ pictures?
You can use Jotrin's intelligent search engine, or filter by RS-232 Line Driver/Receivers category, or find it through Maxim Integrated Information page.
Q: Are the MAXIM's MAX31820MCR+ price and stock displayed on the platform accurate?
The MAXIM's inventory fluctuates greatly and cannot be updated in time, it will be updated periodically within 24 hours. After submitting an order for MAX31820MCR+, it is recommended to confirm the order with Jotrin salesperson or online customer service before payment.
Q: Can I place an order offline?
Yes. We accept offline orders.
We can provide order placement service. You only need to log in, click "My Orders" to enter the transaction management, and you will see the "Order Details" interface. After checking it, select all and click "Place Order". In addition, you can enjoy coupons or other selected gifts when placing orders online.
Q: What forms of payment can I use in Jotrin?
TT Bank, Paypal, Credit Card, Western Union, and Escrow is all acceptable.
Q: How is the shipping arranged and track my package?
Customers can choose industry-leading freight companies, including DHL, FedEx, UPS, TNT, and Registered Mail.
Once your order has been processed for shipment, our sales will send you an e-mail advising you of the shipping status and tracking number.
Note: It may take up to 24 hours before carriers will display tracking information. In normal conditions, Express delivery needs 3-5 days, Registered Mail needs 25-60 days.
Q: What is the process for returns or replacement of MAX31820MCR+?
All goods will implement Pre-Shipment Inspection (PSI), selected at random from all batches of your order to do a systematic inspection before arranging the shipment. If there is something wrong with the MAX31820MCR+ we delivered, we will accept the replacement or return of the MAX31820MCR+ only when all of the below conditions are fulfilled:
(1)Such as a deficiency in quantity, delivery of wrong items, and apparent external defects (breakage and rust, etc.), and we acknowledge such problems.
(2)We are informed of the defect described above within 90 days after the delivery of MAX31820MCR+.
(3)The MAX31820MCR+ is unused and only in the original unpacked packaging.
Two processes to return the products:
(1)Inform us within 90 days
(2)Obtain Requesting Return Authorizations
More details about return electronic components please see our Return & Change Policy.
Q: How to contact us and get support, such as MAX31820MCR+ datasheet pdf, MAX3182 pin diagram?
Need any After-Sales service, please feel free contact us:

Maxim Integrated

Maxim Integrated Products is a global range of linearity, mixed-signal integrated circuits (IC) design, R & D and manufacturing leader, has designed, developed, and manufactured analog, mixed-signal, high-frequency, and digital circuits that enable all four of these key interactions....
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