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MAXIM INTEGRATED / ANALOG DEVICES DS1374U33 Real-Time Clock with Watchdog

The DS1374U-33+ is an I2C-enabled, 32-bit binary counter watchdog RTC with a trickle charger and reset input/output, housed in a 10-pin µSOP package. It features a high-precision, temperature-compensated reference and comparator circuit that monitors VCC to detect power failures. The device includes a 32-bit counter for continuous time counting in seconds, with an additional counter for generating periodic alarms or serving as a watchdog timer. When disabled, this additional counter can be used as three bytes of non-volatile RAM. Separate output pins provide an interrupt signal and a square wave at one of four selectable frequencies. The reset pin can be triggered by an external pushbutton, and the device automatically switches to a backup power supply in case of power failure. Programming is performed via an I2C serial interface. The power supply voltage range is 2.97V to 5.5V, and it operates within -40°C to 85°C. The device features an open-drain reset output and an integrated, single-pin pushbutton reset input. It includes automatic power-fail detection and switching circuitry, and is UL recognized. Typical applications include clock and timing functions in portable devices.

Authorized Distributors
Source:Newark
Part No:DS1374U-33+
Stock:6
Inv Date:06-05-2026
Price: Unit price: $0.884
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Source:DigiKey
Part No:DS1374U-33+
Stock:1572
Inv Date:06-05-2026
Price: Unit price: $7.21
Buy/RFQ:
Part No:DS1374U-33+
Stock:76
Inv Date:06-06-2026
Price: Unit price: $7.08
Buy/RFQ:
Part No:DS1374U-33
Stock:0
Inv Date:06-06-2026
Price: N/A
Buy/RFQ:

MAXIM INTEGRATED / ANALOG DEVICES DS1374U33 Real-Time Clock with Watchdog Specifications:

  • Supply Voltage Range: 2.97V to 5.5V
  • Operating Temperature Range: -40°C to 85°C
  • Package: 10-pin µSOP
  • Counter Type: 32-bit binary counter for seconds
  • Additional Counter: 24-bit for alarms/watchdog, configurable as NV RAM when disabled
  • Monitoring Circuit: High-precision temperature-compensated reference and comparator for VCC
  • Outputs: Separate interrupt pin, square wave pin with four selectable frequencies
  • Reset Functionality: External pushbutton reset, automatic power-fail detection with switching to backup supply
  • Communication Interface: I2C serial interface, supports standard (100kHz) and fast (400kHz) modes
  • Features: Open-drain reset output, integrated trickle charger, UL recognized

Buy the Buy Maxim Integrated DS1374U33 Part Number DS1374U33 Online

Get your DS1374U33 now from our online store for reliable time and event management in portable devices. This high-precision RTC includes a watchdog timer, trickle charger, and reset features, all housed in a compact 10-pin µSOP package. Designed to operate from 2.97V to 5.5V and capable of working in extreme temperatures from -40°C to 85°C. Its I2C interface allows easy programming, making it ideal for clocks, timers, and portable electronics. Purchase today to ensure precise timing and robust power management in your project.

Buy Maxim Integrated DS1374U33 now and experience reliable timekeeping with integrated watchdog, trickle charger, and seamless power management.

Frequently Asked Questions

Where can I buy MAXIM INTEGRATED / ANALOG DEVICES DS1374U33?

You can click on the BUY or RFQ button to purchase DS1374U33 from an authorized MAXIM INTEGRATED / ANALOG DEVICES distributor.

How do I troubleshoot issues or seek technical support for part DS1374U33?

You can download the DS1374U33 datasheet or visit the MAXIM INTEGRATED / ANALOG DEVICES website for support.

Who is the manufacturer of DS1374U33?

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