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  3. DS1374U


Features and Benefits

  • 32-Bit Binary Counter
  • Second Binary Counter Provides Time-of-Day Alarm, Watchdog Timer, or NV RAM
  • Separate Square-Wave and Interrupt Output Pins
  • I²C Serial Interface
  • Automatic Power-Fail Detect and Switch Circuitry
  • Single-Pin Pushbutton Reset Input/Open-Drain Reset Output
  • Low-Voltage Operation
  • Trickle-Charge Capability
  • -40°C to +85°C Operating Temperature Range
  • 10-Pin µSOP, 16-Pin SO
  • Available in a Surface-Mount Package with an Integrated Crystal (DS1374C)

Product Details

The DS1374 is a 32-bit binary counter designed to continuously count time in seconds. An additional counter generates a periodic alarm or serves as a watchdog timer. If disabled, this counter can be used as 3 bytes of nonvolatile (NV) RAM. Separate output pins are provided for an interrupt and a square wave at one of four selectable frequencies. A precision temperature-compensated reference and comparator circuit monitor the status of VCC to detect power failures, provide a reset output, and automatically switch to the backup supply when necessary.

Additionally, the reset pin is monitored as a pushbutton input for externally generating a reset. The device is programmed serially through an I²C serial interface.


  • Medical Equipment
  • Point-of-Sale Equipment
  • Portable Instrumentation
  • Telecommunications

Product Categories

Product Lifecycle icon-recommended Production

At least one model within this product family is in production and available for purchase. The product is appropriate for new designs but newer alternatives may exist.

Product Recommendations

DS1374U Companion Parts

Recommended Related Parts

Design Resources

ADI has always placed the highest emphasis on delivering products that meet the maximum levels of quality and reliability. We achieve this by incorporating quality and reliability checks in every scope of product and process design, and in the manufacturing process as well.  "Zero defects" for shipped products is always our goal.View our quality and reliability program and certifications for more information.

Part Number Material Declaration Reliability Data Pin/Package Drawing CAD Symbols, Footprints & 3D Models
DS1374C-33# Material Declaration Reliability Data 16-SOIC_W-300_MIL
DS1374C-33#T&R Material Declaration Reliability Data 16-SOIC_W-300_MIL
DS1374U-18+ Material Declaration Reliability Data 10-MINI_SO-N/A
DS1374U-3+ Material Declaration Reliability Data 10-MINI_SO-N/A
DS1374U-3+T&R Material Declaration Reliability Data 10-MINI_SO-N/A
DS1374U-33+ Material Declaration Reliability Data 10-MINI_SO-N/A
DS1374U-33+T&R Material Declaration Reliability Data 10-MINI_SO-N/A
Wafer Fabrication Data

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Buy Now Pricing

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List Pricing

(*)The 1Ku list pricing shown is for BUDGETARY USE ONLY, shown in United States dollars (FOB USA per unit for the stated volume), and is subject to change. International prices may differ due to local duties, taxes, fees and exchange rates. For volume-specific price or delivery quotes, please contact your local Analog Devices, Inc. authorized distributor. Pricing displayed for Evaluation Boards and Kits is based on 1-piece pricing.


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