Real Time Clocks

Real Time Clocks (RTCs) provide time and/or date information in almost any electronic device which needs to keep accurate time. The clock types are binary counter, clock/calendar/supervisor, elapsed time counter, phantom time chip, portable system controller, temperature recorder, time event recorder, and timer clock peripheral.  They contain memory sizes ranging from 2 B to 2 MB and have interface options of I2C, Parallel, Serial, SPI, 1-Wire, 2-Wire, 3-Wire, and 4-Wire.


Maxim Integrated DS1744-70IND+

IC RTC CLK/CALENDAR PAR 28-EDIP

32.48

Maxim Integrated DS1744-70+

IC RTC CLK/CALENDAR PAR 28-EDIP

27.97

Maxim Integrated DS1554-70+

IC RTC CLK/CALENDAR PAR 32-EDIP

25.4

STMicroelectronics M48T35Y-70PC1

IC RTC CLK/CALENDAR PAR 28DIP

25.09

STMicroelectronics M48T08-100PC1

IC RTC CLK/CALENDAR PAR 28DIP

22.2

STMicroelectronics M48T08-150PC1

IC RTC CLK/CALENDAR PAR 28DIP

22.2

Texas Instruments DP8573AV/NOPB

IC RTC CLK/CALENDAR PAR 28-PLCC

21.05

STMicroelectronics M48T18-150PC1

IC RTC CLK/CALENDAR PAR 28DIP

17.89