Products > Integrated Circuits (ICs) > Clock & Timer ICs > DS1511W+
  • DS1511W+

Images are for reference only.


Hot Sale

RTC IC, Date Time Format (Day/Date/Month/Year/Century hh:mm:ss), Bytewide, 3 V to 3.6 V, EDIP-28

Manufacturer : Maxim Integrated
Package/Case : DIP-28
Product Categories : Real Time Clock
Datasheet: DS1511W+ Datasheet (PDF)
RoHs Status: Rohs
In-stock: 401


Request for Quotation

Warm Tips: Please fill out the below form and we will contact you as soon as possible.

DS1511W+ Product Details

The DS1511W+ is a Y2K compliant watchdog real time clock (RTC) in 28 pin EDIP package. It is a low power clock/date device with a programmable day of week/date alarm and it has 3.3V operation. This full function, year 2000 compliant real time clock/calendar contains RTC alarm, watchdog timer, precision power-on reset, battery monitors, 256byte battery backed NV SRAM and 32.768KHz output. It is a standalone encapsulated DIP module with embedded battery and crystal. User access to all registers within the DS1511W+ is accomplished with bytewide interface. The RTC registers includes BCD coded century, year, month, date, day, hours, minutes and seconds with automatic leap year compensation valid up to the year 2100 (corrections for day of month and leap year are made automatically). Power control circuitry supports system power-on from date/day/time alarm or key closure/modem detect signal. The DS1511W+ is used in remote systems, battery backed systems, telecom switches and office equipments.


  • Supply voltage range from 3V to 3.6V
  • Operating temperature range from 0°C to 70°C
  • Accuracy is better than ±1 minute/month at +25°C
  • Programmable watchdog timer and RTC alarm
  • Auxiliary battery input and battery voltage level indicator flags
  • Day of week/date alarm register
  • UL recognized
  • Battery voltage level indicator flags
  • Active supply current of 10mA
  • Read cycle time is 120ns and write cycle time is 120ns


  • Battery-Backed Systems
  • Consumer Electronics
  • Office Equipment
  • Remote Systems
  • Telecom Switches

DS1511W+ Block Diagram
(Picture: Diagram)

Technical Parameters

  • Function
  • Watchdog Timekeeper
  • RTC Bus Interface
  • Parallel
  • Date Format
  • Time Format
  • HH:MM:SS
  • RTC Memory Size
  • 256 B
  • Supply Voltage Max
  • 3.6 V
  • Supply Voltage Min
  • 3 V
  • Maximum Operating Temperature
  • + 70 C
  • Minimum Operating Temperature
  • 0 C
  • Mounting Style
  • Through Hole
  • Package / Case
  • DIP-28
  • Packaging
  • Tube
  • Series
  • DS1501, DS1511
  • Part # Aliases
  • 90-1511W+000

DS1511W+ Related Products

Ratings and Reviews

  • 0 / 5
  • 5 Stars 0%
  • 4 Stars 0%
  • 3 Stars 0%
  • 2 Stars 0%
  • 1 Stars 0%
  • Ratings
  • Please rate the product!
Shipping More
Estimated Delivery Time: Apr 06 - Apr 11 days (choose Expedited at checkout).

Shipping & Payment


  • 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.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 DS1511W+ 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 DS1511W+ devices; we pay more attention to the channels and quality of DS1511W+ products than any other customer. We strictly implement supplier audits, so you can purchase with confidence.
Q: How to find the detailed information of DS1511W+ chips? Including MAXIM original factory information, Real Time Clock application, DS1511W+ 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 DS1511W+ 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 DS1511W+, 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 DS1511W+?
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 DS1511W+ we delivered, we will accept the replacement or return of the DS1511W+ 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 DS1511W+.
(3)The DS1511W+ 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 DS1511W+ datasheet pdf, DS1511 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....
  • DS1501YZN+
    DS1501YZN+ RTC IC, Date Time Format (Day/Date/Month/Year/Century hh:mm:ss), Bytew...
  • DS1500WEN
    DS1500WEN Y2K-Compliant Watchdog RTC with NV Control
  • DS1500WEN+
    DS1500WEN+ Y2K-Compliant Watchdog RTC with NV Control
  • DS1501WEN+
    DS1501WEN+ Real Time Clock IC RTC WDOG Y2K 3.3V IND
  • DS1501WEN
    DS1501WEN Y2K-Compliant Watchdog Real-Time Clocks
  • DS1501WSN
    DS1501WSN Y2K-Compliant Watchdog Real-Time Clocks

Certificates & Honor

Certificates & Honor