Analog Devices Inc./Maxim Integrated

DS1305N  

Real Time Clocks ICs

DS1305N Description

The DS1305N is a highly reliable Real Time Clock (RTC) and Calendar IC designed by Analog Devices Inc./Maxim Integrated. This Through Hole mounted component is housed in a Tube package and features a 16-DIP form factor. Despite being marked as Obsolete, the DS1305N remains a robust solution for applications requiring precise timekeeping and calendar functions.

The DS1305N operates within a wide supply voltage range of 2V to 5.5V, ensuring compatibility with various power sources. It also supports a battery supply voltage range of 2V to 5.5V, making it suitable for low-power applications. The device consumes a maximum timekeeping current of 25.3µA to 81µA at 2V to 5V, which is ideal for battery-operated systems where power efficiency is crucial.

The DS1305N provides clock and calendar functions with a time format of HH:MM:SS, supporting both 12-hour and 24-hour formats. It includes 96 bytes of memory, offering ample space for additional data storage. The device communicates via the SPI interface, ensuring seamless integration with microcontrollers and other digital systems.

DS1305N Features

• Wide Operating Voltage Range: The DS1305N operates reliably within a supply voltage range of 2V to 5.5V, making it versatile for different power supply configurations.
• Low Power Consumption: With a maximum timekeeping current of 25.3µA to 81µA at 2V to 5V, the DS1305N is designed for energy efficiency, making it suitable for battery-backed applications.
• Flexible Time Format: The device supports both 12-hour and 24-hour time formats, providing flexibility to meet various user preferences and system requirements.
• Memory Capacity: The DS1305N features 96 bytes of memory, offering additional storage for user data, which can be useful for logging and other applications.
• SPI Interface: The DS1305N communicates via the SPI interface, ensuring easy integration with microcontrollers and other digital systems.
• Through Hole Mounting: The Through Hole mounting type ensures robust mechanical stability and is suitable for applications requiring high reliability.
• Moisture Sensitivity Level (MSL): With an MSL of 1 (Unlimited), the DS1305N is suitable for a wide range of environmental conditions without the need for special handling.

DS1305N Applications

The DS1305N is ideal for a variety of applications where precise timekeeping and calendar functions are essential. Some specific use cases include:

• Embedded Systems: The DS1305N can be integrated into embedded systems to provide accurate time and date information, enhancing the functionality of devices such as smart meters, industrial controllers, and medical equipment.
• Battery-Backed Applications: Its low power consumption and wide operating voltage range make it suitable for battery-backed applications, ensuring reliable timekeeping even during power outages.
• Data Logging: The additional memory capacity allows for data logging, making the DS1305N a valuable component in systems that require timestamped data storage.
• Consumer Electronics: The DS1305N can be used in consumer electronics such as digital clocks, home automation systems, and other devices that require accurate timekeeping.

Conclusion of DS1305N

The DS1305N, despite being marked as Obsolete, remains a reliable and versatile Real Time Clock and Calendar IC. Its wide operating voltage range, low power consumption, and flexible time format make it suitable for a variety of applications. The additional memory capacity and SPI interface further enhance its functionality and ease of integration. For applications requiring precise timekeeping and calendar functions, the DS1305N is an excellent choice, offering robust performance and reliability.

DS1305N Documents

Download datasheets and manufacturer documentation for DS1305N

Datasheets :

DS1305      

Other Related Documents :

Tips for Writing Bulletproof Real-Time Clock Control Code      

Application Notes :

Interfacing a DS1305 RTC with an 8051-Type Microcontroller       Selecting a Backup Source for Real-Time Clocks       Oscillator Design Considerations for Low-Current Applications       State Machine Logic in Binary-Coded Decimal (BCD)-Formatted Real-Time Clocks      

PCN Obsolescence/ EOL :

Mult Dev OBS 15/Jul/2015      

Environmental Information :

Maxim Integrated RoHS Cert       Material Declaration DS1305N       Maxim Integrated REACH