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
DS1248Y-70IND+ Maxim Integrated IC RTC PHANTOM PAR 32-DIP 17 $36.53
DS1251Y-70+ Maxim Integrated IC RTC PHANTOM PAR 32-DIP 26 $34.10
DS1744WP-120IND+ Maxim Integrated IC RTC CLK/CALENDAR PAR 34-PCM 8 $29.62
DS17887-3IND+ Maxim Integrated IC RTC CLK/CALENDAR PAR 24-EDIP 73 $27.05
DS17487-5+ Maxim Integrated IC RTC CLK/CALENDAR PAR 24-EDIP 84 $16.32
DS1315N-5+ Maxim Integrated IC RTC PHANTOM PAR 16-DIP 75 $15.93
DS1558Y+ Maxim Integrated IC RTC CLK/CALENDAR PAR 48-LQFP 54 $10.32
DS1673S-3+ Maxim Integrated IC RTC SYSTEM CTRLR SER 20-SOIC 72 $9.58
DS17285S-3+ Maxim Integrated IC RTC CLK/CALENDAR PAR 24-SOIC 30 $9.35
DS1673E-3+ Maxim Integrated IC RTC SYSTEM CTRLR SER 20-TSSOP 99 $9.23