MAXIM INTEGRATED PRODUCTS
RTC IC, Date Time Format (Day/Date/Month/Year hh:mm:ss), I2C, 3 V to 5.5 V, NSOIC-8
RTC, 56B NVRAM, I2C, 1338, SOIC8
RTC IC, Date Time Format (Day/Date/Month/Year hh:mm:ss), I2C, 2.7 V to 5.5 V, NSOIC-8