DS1374U
I²C, 32-Bit Binary Counter Watchdog RTC with Trickle Charger and Reset Input/Output
Elapsed Time Counter Provides Power-On Reset, Watchdog or Alarm, and Square Wave
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Overview
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.
Applications
- Medical Equipment
- Point-of-Sale Equipment
- Portable Instrumentation
- Telecommunications
Product Categories
Product Lifecycle
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.
Documentation & Resources
Product Recommendations
DS1374U Companion 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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