DS1742-85+ - Nonvolatile Timekeeping RAM

The DS1742-85+ is a full-function, year-2000-compliant (Y2K), real-time clock/calendar (RTC) and 2k x 8 nonvolatile static RAM. Manufactured by Maxim Integrated, this product is designed to provide a robust timekeeping solution with nonvolatile data storage, ensuring data retention and accurate timekeeping even during power loss. It is an ideal component for applications requiring reliable timekeeping and data storage without the need for a backup battery.

The RTC provides seconds, minutes, hours, day, date, month, and year information, with the added feature of leap year compensation valid up to the year 2100. The clock operates in either the 24-hour or 12-hour format with an AM/PM indicator. The DS1742-85+ is equipped with a built-in power-sense circuit that detects power failures and automatically switches to the backup energy source, ensuring that the timekeeping operation continues seamlessly.

The nonvolatile SRAM offers 2K x 8 bits of storage, which is protected during power loss by an integrated lithium energy cell. This energy cell has a lifespan of over 10 years, guaranteeing long-term data retention without the need for an external battery. The device is accessed via a simple multiplexed byte-wide interface, which provides both high-speed RAM and nonvolatile data functionality in a single package.

The DS1742-85+ is housed in a 24-pin JEDEC standard dual-in-line package, making it easy to integrate into a wide variety of applications. Its operating temperature ranges from 0°C to +70°C, making it suitable for commercial-grade requirements. The device's low power consumption and high integration make it a convenient and energy-efficient choice for desktop computers, embedded systems, industrial controls, and any other systems that require reliable timekeeping and data storage.

With its combination of nonvolatile RAM and real-time clock capabilities, the DS1742-85+ from Maxim Integrated provides a compact, secure, and reliable solution for maintaining critical data and time information across power cycles, ensuring consistent performance for your electronic systems.