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DS1747W-120

DS1747W-120 Description

The DS1747W-120 is a high-performance clock/calendar Real-Time Clock (RTC) IC designed by Analog Devices Inc./Maxim Integrated. This device is part of the DS1747 family and is housed in a Through Hole package, specifically a 32-lead DIP (Dual In-line Package). It operates within a voltage range of 2.97V to 3.63V and features a maximum timekeeping current of 2mA at 3.3V. The DS1747W-120 supports a wide operating temperature range of 0°C to 70°C, making it suitable for various industrial and commercial applications.

This RTC IC includes 512KB of non-volatile static RAM (NVSRAM), providing ample storage for critical data that needs to be retained even when power is lost. The DS1747W-120 also supports a parallel interface, enabling efficient communication with other system components. The time format is set to a 24-hour clock (HH:MM:SS), ensuring accurate and reliable timekeeping.

DS1747W-120 Features

• Leap Year and Y2K Compliance: The DS1747W-120 is designed to handle leap years and Y2K (Year 2000) compliance, ensuring accurate timekeeping over extended periods.
• Non-Volatile Static RAM (NVSRAM): With 512KB of NVSRAM, this IC offers robust data storage capabilities, safeguarding critical information even during power outages.
• Low Power Consumption: The maximum timekeeping current of 2mA at 3.3V ensures minimal power usage, making it ideal for battery-powered applications.
• Wide Operating Temperature Range: The DS1747W-120 operates reliably between 0°C and 70°C, making it suitable for a variety of environmental conditions.
• Parallel Interface: The parallel interface allows for efficient data transfer and integration with other system components.
• 24-Hour Time Format: The HH:MM:SS format ensures precise and clear timekeeping.

DS1747W-120 Applications

The DS1747W-120 is ideal for applications requiring precise timekeeping and reliable data storage. Its robust features make it suitable for:

• Industrial Control Systems: Where accurate timekeeping and data retention are crucial for system operations and maintenance.
• Embedded Systems: In devices that require a reliable clock/calendar function and non-volatile memory for storing configuration data.
• Telecommunications: For network equipment that needs precise time synchronization and data logging.
• Consumer Electronics: In devices such as digital clocks, smart meters, and other appliances that benefit from accurate timekeeping and data storage.

Conclusion of DS1747W-120

The DS1747W-120 is a versatile and reliable RTC IC that offers a combination of accurate timekeeping, robust data storage, and low power consumption. Its wide operating temperature range and parallel interface make it suitable for a variety of applications, from industrial control systems to consumer electronics. Despite being marked as obsolete, the DS1747W-120 remains a valuable component for applications requiring a dependable clock/calendar function and non-volatile memory.