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.

Part Number Manufacturer Description Quantity Price Option
DS1554P-70IND+ Maxim Integrated IC RTC CLK/CALENDAR PAR 34-PCM 35 $27.78
DS1554WP-120+ Maxim Integrated IC RTC CLK/CALENDAR PAR 34-PCM 40 $22.71
DS1315EN-33+ Maxim Integrated IC RTC PHANTOM PAR 20-TSSOP 93 $18.21
DS1501WZ+ Maxim Integrated IC RTC CLK/CALENDAR PAR 28-SOIC 55 $9.90
DS1673S-5+ Maxim Integrated IC RTC SYSTEM CTRLR SER 20-SOIC 36 $9.58
DS1670S+ Maxim Integrated IC RTC SYSTEM CTRLR SER 20-SOIC 37 $9.58
DS12885N+ Maxim Integrated IC RTC CLK/CALENDAR PAR 24-DIP 27 $7.13
DS1342U+ Maxim Integrated IC RTC CLK/CALENDAR I2C 8-USOP 53 $2.90
DS1248W-120IND+ Maxim Integrated IC RTC PHANTOM PAR 32-DIP 16 $37.91
DS1251W-120+ Maxim Integrated IC RTC PHANTOM PAR 32-DIP 19 $37.47