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.

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Maxim Integrated DS1673S-5+

IC RTC SYSTEM CTRLR SER 20-SOIC

9.58

Maxim Integrated DS1670S+

IC RTC SYSTEM CTRLR SER 20-SOIC

9.58

Maxim Integrated DS12885N+

IC RTC CLK/CALENDAR PAR 24-DIP

7.13

Maxim Integrated DS1342U+

IC RTC CLK/CALENDAR I2C 8-USOP

2.9

Maxim Integrated DS1248W-120IND+

IC RTC PHANTOM PAR 32-DIP

37.91

Maxim Integrated DS1251W-120+

IC RTC PHANTOM PAR 32-DIP

37.47

Maxim Integrated DS1248Y-70IND+

IC RTC PHANTOM PAR 32-DIP

36.53

Maxim Integrated DS1251Y-70+

IC RTC PHANTOM PAR 32-DIP

34.1