MAXIM INTEGRATED PRODUCTS
RTC IC, Date Time Format (Day/Date/Month/Year/Century hh:mm:ss), Bytewide, 2.97 V to 3.63 V, TQFP-48
RTC IC, Date Time Format (Day/Date/Month/Year/Century hh:mm:ss), Bytewide, 4.5 V to 5.5 V, TQFP-48