Maxim Integrated DS1672S-33+T Real-Time Clock

The DS1672S-33+T from Maxim Integrated is a low-power, full-binary-coded decimal (BCD) real-time clock/calendar (RTC) with a built-in 32.768kHz crystal oscillator. This integrated circuit (IC) provides precise time and date tracking, from seconds to years, and is ideal for a wide range of applications that require an accurate timekeeping solution, such as data loggers, handheld devices, and other electronic systems that require low-power consumption.

The device comes in a compact surface-mount package, specifically in a SOIC-8 form factor, making it suitable for space-constrained applications. It operates over a wide voltage range of 2.7V to 5.5V, ensuring compatibility with both 3.3V and 5V systems. The DS1672S-33+T variant is tailored for a nominal supply voltage of 3.3V, indicated by the '33' in its part number, and the '+T' suffix denotes tape and reel packaging for automated assembly processes.

One of the key features of the DS1672S-33+T is its built-in power-sense circuit, which detects power failures and automatically switches to the backup supply, preserving timekeeping operation. This ensures that the clock continues to run even when the primary power source is unavailable. The device also includes a programmable trickle-charge circuit that can be used to recharge a backup battery, further enhancing its reliability in long-term applications.

Communication with the DS1672S-33+T is facilitated through an I²C serial interface, which allows for easy integration with microcontrollers and other digital systems. The simple serial interface also minimizes the number of pins required for connecting the device, saving valuable board space and reducing system complexity.

Maxim Integrated's commitment to quality and reliability is evident in the DS1672S-33+T, making it a trusted choice for designers looking to incorporate a robust and accurate real-time clock/calendar in their systems. With its combination of features, this RTC offers a practical solution for maintaining precise time in electronic devices.