Analog Devices Inc./Maxim Integrated

DS17885-3  

Real Time Clocks ICs

DS17885-3 Description

The DS17885-3 is a highly integrated Real-Time Clock (RTC) and Calendar IC designed by Analog Devices Inc./Maxim Integrated. This device is part of the DS17885 family and offers a comprehensive set of features for precise timekeeping and data storage. The DS17885-3 is housed in a Through Hole package, specifically a 24-pin DIP, making it suitable for applications requiring robust mechanical stability and ease of integration.

The DS17885-3 operates within a temperature range of 0°C to 70°C, ensuring reliable performance in a variety of industrial and consumer environments. It is powered by a supply voltage ranging from 2.7V to 3.7V, with a maximum timekeeping current of 2mA. This low power consumption makes it ideal for battery-backed applications where energy efficiency is crucial.

The DS17885-3 features an 8KB NVSRAM memory, providing ample space for data storage alongside its clock/calendar functions. The device supports both 12-hour and 24-hour time formats (HH:MM:SS) and includes advanced features such as an alarm function, daylight savings adjustment, leap year compensation, and a square wave output. These features enhance its versatility and make it suitable for a wide range of applications requiring precise timekeeping and data retention.

DS17885-3 Features

• Clock/Calendar Functionality: The DS17885-3 maintains accurate timekeeping with a clock/calendar that supports both 12-hour and 24-hour formats. It includes features like an alarm, daylight savings adjustment, and leap year compensation, ensuring precise timekeeping over extended periods.
• 8KB NVSRAM: The device integrates an 8KB NVSRAM memory, allowing for the storage of critical data that needs to be retained even when power is lost.
• Low Power Consumption: With a maximum timekeeping current of 2mA at a supply voltage of 2.7V to 3.7V, the DS17885-3 is highly energy-efficient, making it suitable for battery-backed applications.
• Alarm and Square Wave Output: The DS17885- includes3 an alarm function and a square wave output, providing additional functionality for timing and control applications.
• Parallel Interface: The device features a parallel interface, facilitating easy integration with various microcontrollers and systems.
• Battery Backup: The DS17885-3 supports a battery supply voltage ranging from 2.5V to 3.7V, ensuring continuous operation even during power outages.
• Compliance and Packaging: The DS17885-3 is REACH unaffected and RoHS3 compliant, ensuring it meets environmental and safety standards. It is packaged in a tube, making it suitable for bulk handling and storage.

DS17885-3 Applications

The DS17885-3 is ideal for a variety of applications where precise timekeeping and data retention are essential. Some specific use cases include:

• Industrial Control Systems: The DS17885-3's robust Through Hole packaging and wide operating temperature range make it suitable for industrial environments where reliability and durability are paramount.
• Consumer Electronics: The low power consumption and integrated NVSRAM make it ideal for consumer devices that require battery backup and data storage, such as digital clocks, smart meters, and home automation systems.
• Embedded Systems: The parallel interface and comprehensive feature set make the DS17885-3 a versatile component for embedded systems that require precise timekeeping and data logging capabilities.
• Medical Devices: The DS17885-3's compliance with environmental and safety standards, along with its reliable performance, make it suitable for medical devices that require accurate timekeeping and data retention.

Conclusion of DS17885-3

The DS17885-3 is a versatile and reliable RTC and Calendar IC that offers a comprehensive set of features for precise timekeeping and data storage. Its low power consumption, robust packaging, and advanced features make it an ideal solution for a wide range of industrial, consumer, and embedded applications. Despite being marked as obsolete, the DS17885-3 remains a valuable component for applications requiring reliable timekeeping and data retention.

DS17885-3 Documents

Download datasheets and manufacturer documentation for DS17885-3

Datasheets :

DS17x85, x87      

Other Related Documents :

Tips for Writing Bulletproof Real-Time Clock Control Code      

Application Notes :

Crystal Considerations with Maxim Real-Time Clocks (RTCs)       Selecting a Backup Source for Real-Time Clocks       DS1685/87 and DS17X85/87 Accessing Extended User RAM      

PCN Obsolescence/ EOL :

Mult Dev OBS 14/Apr/2009      

Environmental Information :

Maxim Integrated RoHS Cert       Maxim Integrated REACH       Material Declaration DS17885-3