A Premier B2B Part Search
MAXIM INTEGRATED / ANALOG DEVICES DS1339BU Real-Time Clock
The DS1339BU+ is a low-current, I2C serial real-time clock designed for high ESR crystals, housed in an 8-pin µSOP package. It provides accurate timekeeping with seconds, minutes, hours, day, date, month, and year information, automatically adjusting for months with fewer than 31 days and leap years up to 2200. The device features two programmable alarms, a square wave output, and supports both 12-hour and 24-hour formats with an AM/PM indicator. It includes a built-in power-sense circuit that detects power failures and switches to a backup supply to maintain time and alarms. The clock operates over a voltage range of 1.71V to 5.5V and temperatures from -40°C to 85°C. It supports high ESR crystals up to 100 kΩ, making it suitable for cost-effective and space-saving designs. The backup supply voltage ranges from 1.3V to 3.7V. This device is a drop-in replacement for the DS1339 and features a simple serial interface for microcontroller integration. UL recognized and ideal for various applications including clock & timing, portable devices, consumer electronics, communications & networking, and medical devices. Note: Market demand has extended lead times, and delivery dates may fluctuate. The product is exempt from discounts.
MAXIM INTEGRATED / ANALOG DEVICES DS1339BU Real-Time Clock Specifications:
- Supports high ESR crystals up to 100 kΩ for cost-effective design
- Voltage Range: 1.71V to 5.5V, Backup Voltage: 1.3V to 3.7V
- Operating Temperature: -40°C to +85°C
- Integrated power-fail detection with automatic switch to backup power
- Time accuracy depends on crystal; supports seconds, minutes, hours, day, date, month, and year with leap-year correction up to 2200
- Supports 12/24-hour formats with AM/PM indicator
- Features two programmable alarms and square wave output
- Housing: 8-pin µSOP package, UL recognized
- Serial interface via I2C bus, compatible with microcontrollers
Buy the Maxim Series DS1339 Real-Time Clock: DS1339BU+
Purchase the Maxim DS1339BU+ online today to ensure your projects benefit from high accuracy, reliable power management, and seamless microcontroller integration. This low-power I2C RTC is perfect for clock & timing solutions, portable devices, consumer electronics, and medical equipment. Its support for high ESR crystals offers flexibility, and the built-in power-fail detection guarantees continuous timekeeping even during power outages. Order now to enhance your system’s time accuracy, stability, and space efficiency with this recognized, high-quality real-time clock.
Get Maxim DS1339BU+ today—built for precision and long-lasting durability in timing and scheduling applications.
Frequently Asked Questions
Where can I buy MAXIM INTEGRATED / ANALOG DEVICES DS1339BU?
You can click on the BUY or RFQ button to purchase DS1339BU from an authorized MAXIM INTEGRATED / ANALOG DEVICES distributor.
How do I troubleshoot issues or seek technical support for part DS1339BU?
You can download the DS1339BU datasheet or visit the MAXIM INTEGRATED / ANALOG DEVICES website for support.
Who is the manufacturer of DS1339BU?
MAXIM INTEGRATED / ANALOG DEVICES