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  • DS1371U+

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Binary Counter IC, Date Time Format (Binary), I2C, 1.7 V to 5.5 V, µSOP-8

Manufacturer : Maxim Integrated
Package/Case : MSOP8
Product Categories : Counter ICs
Datasheet: DS1371U+ Datasheet (PDF)
RoHs Status: Rohs
In-stock: 188


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DS1371U+ Product Details

The DS1371U+ is an I2C, 32bit binary counter watchdog clock in 8 pin µSOP package. This device is an industry's lowest cost single supply binary timekeeper for ultra low power applications. It is designed to continuously count time in seconds. An additional counter that can generate periodic alarm or serve as a watchdog timer is also provided. If enabled as a watchdog timer, the watchdog strobe input pin provides hardware reset of counter. If disabled, this counter can be used as 3bytes of general purpose RAM. A configurable output can be used as an interrupt or provide a square wave at one of four selectable frequencies. The device is programmed serially through I2C bidirectional bus. It is used in servers and elapsed time measurements.


  • Supply voltage range from 1.7V to 5.5V
  • Operating temperature range from -40°C to 85°C
  • SCL clock frequency from to 100KHz to 400KHz (fast mode) and 100KHz (standard mode)
  • Timekeeping current of 800nA (osc enabled, INTCN = 1) and 1300nA (osc enabled, INTCN = 0)
  • 24bit binary counter provides periodic alarm, watchdog timer or RAM
  • Strobe input to reset watchdog timer and watchdog strobe (WDS) pulse width of 100ns
  • Single output configurable as interrupt or square wave
  • Low voltage operation
  • Oscillator operating voltage range from 1.3V to 5.5V
  • Active supply current of 100µA and data retention current of 100nA


  • Elapsed Time Measurements
  • Point-of-Sale Equipment
  • Portable Instrumentation
  • Servers

DS1371U+ Block Diagram
(Picture: Diagram)

Technical Parameters

  • Function
  • Watchdog Timekeeper, Alarm, Binary Counter
  • RTC Bus Interface
  • I2C
  • Date Format
  • Binary
  • Time Format
  • Binary
  • RTC Memory Size
  • 3 B
  • Supply Voltage Max
  • 5.5 V
  • Supply Voltage Min
  • 1.7 V
  • Maximum Operating Temperature
  • + 85 C
  • Mounting Style
  • Package / Case
  • uSOP-8
  • Packaging
  • Tube
  • Series
  • DS1371
  • Part # Aliases
  • 90-1371U+000

DS1371U+ Datasheet

DS1371U+ Related Products

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Estimated Delivery Time: Apr 06 - Apr 11 days (choose Expedited at checkout).

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  • $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.The electronic components you purchase include 365 Days Warranty, We guarantee product quality.

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 DS1371U+ 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 DS1371U+ devices; we pay more attention to the channels and quality of DS1371U+ products than any other customer. We strictly implement supplier audits, so you can purchase with confidence.
Q: How to find the detailed information of DS1371U+ chips? Including MAXIM original factory information, Counter ICs application, DS1371U+ pictures?
You can use Jotrin's intelligent search engine, or filter by Timekeeping & Real-Time Clocks category, or find it through Maxim Integrated Information page.
Q: Are the MAXIM's DS1371U+ 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 DS1371U+, 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 DS1371U+?
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 DS1371U+ we delivered, we will accept the replacement or return of the DS1371U+ 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 DS1371U+.
(3)The DS1371U+ 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 DS1371U+ datasheet pdf, DS1371 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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