DS1391U-33
- Mfr.Part #
- DS1391U-33
- Manufacturer
- Analog Devices, Inc.
- Package / Case
- 10-TFSOP, 10-MSOP (0.118, 3.00mm Width)
- Datasheet
- Download
- Description
- IC RTC CLK/CALENDAR SPI 10-USOP
- Stock
- 18,398
- In Stock :
- 18,398
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- Manufacturer :
- Analog Devices, Inc.
- Product Category :
- Real Time Clocks
- Lead Free :
- Lead Free
- Surface Mount :
- yes
- ECCN Code :
- EAR99
- Feature :
- Alarm, Leap Year, Square Wave Output, Trickle-Charger
- Pbfree Code :
- yes
- Number of Pins :
- 10
- HTS Code :
- 8542.39.00.01
- Type :
- Clock/Calendar
- Factory Lead Time :
- 6 Weeks
- Terminal Finish :
- Matte Tin (Sn)
- Time Format :
- HH:MM:SS:hh (12/24 hr)
- Time@Peak Reflow Temperature-Max (s) :
- 30
- Power Supplies :
- 3.3V
- Voltage - Supply, Battery :
- 1.3V~5.5V
- Supply Voltage :
- 3.3V
- Packaging :
- Tube
- Current - Timekeeping (Max) :
- 175μA @ 2.97V~5.5V
- Package / Case :
- 10-TFSOP, 10-MSOP (0.118, 3.00mm Width)
- Terminal Pitch :
- 0.5mm
- JESD-609 Code :
- e3
- Pin Count :
- 10
- Date Format :
- YY-MM-DD-dd
- Operating Temperature :
- -40°C~85°C
- Length :
- 3mm
- Base Part Number :
- DS1391
- Width :
- 3mm
- Interrupt Capability :
- Y
- Mounting Type :
- Surface Mount
- RoHS Status :
- ROHS3 Compliant
- Qualification Status :
- Not Qualified
- Number of Terminations :
- 10
- Peak Reflow Temperature (Cel) :
- 260
- Published :
- 2002
- Clock Frequency :
- 0.032MHz
- Height Seated (Max) :
- 1.1mm
- Interface :
- SPI
- Terminal Position :
- Dual
- Number of Timers :
- 1
- Volatile :
- No
- Voltage - Supply :
- 2.97V~5.5V
- Moisture Sensitivity Level (MSL) :
- 1 (Unlimited)
- Information Access Method :
- SERIAL, 3-WIRE
- Datasheets
- DS1391U-33

Real Time Clocks Analog Devices, Inc. DS1391U-33 Overview
The DS1391U-33 by Analog Devices, Inc. represents a sophisticated integration of real-time clock (RTC) and calendar functionality, tailored for applications requiring precise time and date management. This integrated circuit is housed in a compact 10-USOP package, making it ideal for space-constrained applications while offering robust SPI communication for reliable data transfers. The device ensures accurate timekeeping with minimal power consumption, a critical feature for battery-operated devices. This overview of the Real Time Clocks Analog Devices, Inc. DS1391U-33 highlights its utility in maintaining system integrity and functionality across various electronic applications.
DS1391U-33 Features
The DS1391U-33 boasts several key features that make it a preferred choice for real-time clock applications. These include a serial peripheral interface (SPI) for easy integration into existing designs, a compact 10-USOP package suitable for miniaturized electronics, and low power consumption which extends the life of battery-powered devices. Additionally, the IC integrates a complete clock and calendar functionality with automatic adjustments for leap years and months with fewer than 31 days, ensuring long-term reliability and accuracy.
DS1391U-33 Applications
- Consumer Electronics: Employed in devices such as smart watches and digital clocks, the DS1391U-33 maintains accurate time which is crucial for user interface and functionality.
- Industrial Systems: Utilized in timing control systems for factory automation, ensuring that operations are synchronized and that time-stamping is accurate for logging and monitoring purposes.
- Telecommunication Equipment: Used in network hardware like routers and switches to provide precise timing, which is essential for data integrity and efficient data transfer.
- Portable Medical Devices: Integrated in wearable health monitors, where precise timekeeping is necessary to timestamp and log patient data accurately for diagnostics and treatment monitoring.
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