RTC and 32.768kHz Clocks

32.768kHz oscillators with a wide range of current (<1µA to<400µA) and temperature stability (up to -40 to 105°C) offer designers opportunity to match requirements closely. -40 to 85°C temperature range AT-Cut quartz solutions achieve <50ppm over -40 to 85°C; IC's with EEPROM and Tuning fork or AT-Cut crystals achieve stabilities =5ppm.

Series	Description	VC America Recommendations	Status	Datasheets
8592	RTC I2 C-bus*1 Full feature/function clock IC 3ppm accuracy over temperature	✅ Best of Class ❗	Active	8592.pdf
8591	RTC I2 C-bus*1 Full function clock IC temperature compensated	Contact VC America	Active	Request
7202H	32.768 kHz <±50ppm 1.6~3.63V Low 7µA current using AT-Cut crystal and operation to 125°C	✅ Best of Class ❗	Active	Request
5095	Exceptional frequency stability over wide temperature range 32.768 kHz IC, compensated by EEPROM programming to ±10ppm -10°C to 60°C or ±7ppm -40°C to 105°C	✅ Best of Class ❗ for power and temperature stability	Active	5095.pdf
5091	32.768 kHz IC low 1 µA current, tuning fork and frequency adjust to improve accuracy and yields	✅ tuning fork solution with excellent 25°C tolerance	Active	5091.pdf
5059H	32.768 kHz <±50ppm 1.6~5.5V 60-70µA current and operation to 125°C	✅ Good 125°C consider 7202H for lower power and 1.6-3.63V	Active	5059H.pdf
5029	32.768 kHz <±50ppm 2.25-3.6V 300-400µA current	1.8-5.5V see 5059H Lowest power see 7202H	Active	5029.pdf