The DS1742-100IND from Maxim Integrated is a high-performance, non-volatile memory and real-time clock (RTC) component designed for a wide range of industrial and embedded applications. This integrated device includes a full-function, binary-coded decimal (BCD) clock/calendar, a programmable interrupt, a power-fail comparator, a lithium energy source, and a 128 x 8 static RAM.

Key Features

• Real-Time Clock/Calendar: The DS1742-100IND tracks seconds, minutes, hours, days, date, month, and year information. The date at the end of the month is automatically adjusted for months with fewer than 31 days, including corrections for leap year.
• Non-Volatile RAM: The device offers 128 bytes of non-volatile RAM storage. This memory is maintained through the integrated lithium battery, ensuring data retention without external power.
• Integrated Power-Fail Comparator: This feature automatically switches to the battery supply when a power-fail condition is detected, ensuring the integrity of the RTC and RAM data.
• Programmable Interrupt Function: The programmable interrupt can be configured for different events, such as periodic interrupts or alarm interrupts, providing flexibility for various application requirements.
• Industrial Temperature Range: The DS1742-100IND is designed to operate within an industrial temperature range of -40°C to +85°C, making it suitable for harsh environments.
• Long Battery Life: The onboard lithium battery has a lifespan that typically allows for years of operation, reducing maintenance needs and ensuring continuous functionality.

Applications

The DS1742-100IND is ideal for applications that require accurate timekeeping, data retention, and reliable operation under extreme conditions. It is commonly used in:

• Industrial control systems
• Embedded systems
• Utility meters
• Security systems
• Telecommunications equipment
• Medical devices

Maxim Integrated's DS1742-100IND is a robust, reliable solution for systems that cannot afford to lose data or time accuracy, even when power is unavailable or unreliable. Its integration of memory, RTC, and battery backup in a single package makes it a compact and efficient choice for designers looking to streamline their systems.