Real-time clocks provide time and/or date information in almost any electronic device that is needed to keep accurate time. They can provide accurate real-time time for people, or provide accurate time reference for electronic system. At present, most real-time clock chips use crystal oscillator with high precision as clock source.
IC RTC CLK/CALENDAR SER 22-SON
1810 pieces
IC RTC CLK/CALENDAR I2C 8-SOP
4500 pieces
IC RTC CLK/CALENDAR I2C 14-SOP
7500 pieces
1820 pieces
IC RTC CLK/CALENDAR SER 12-VSOJ
33000 pieces
10000 pieces
8200 pieces
I2C-bus Real-Time Clock ICs with Voltage Monitoring Function
8600 pieces
I2C-bus Real-Time Clock ICs with Voltage Monitoring Function 
7690 pieces
IC RTC CLK/CALENDAR SER 12-VSOJ
IC RTC CLK/CALENDAR PAR 18-DIP
9300 pieces
IC RTC CLK/CALENDAR PAR 24-SOP
6670 pieces
IC RTC CLK/CALENDAR PAR 24-SOIC
1560 pieces
IC RTC CLK/CALENDAR PAR 24-SSOP
7000 pieces
1850 pieces
1870 pieces
7500 pieces
4000 pieces
IC RTC CLK/CALENDAR I2C 22-SON
3-WIRE SERIAL INTERFACE REAL-TIME CLOCK ICs WITH VOLTAGE MONITORING FUNCTION 
3360 pieces
IC RTC CLK/CALENDAR I2C 20-DFN
Real Time Clock Serial 96byte Clock/Calendar/Alarm 20-Pin TSSOP T/R / IC RTC CLK/CALENDAR SPI 20-TSSOP
IC RTC CLK/CALENDAR SPI 14-TSSOP
IC RTC CLK/CALENDAR SER SNT-8A
IC RTC CLK/CALENDAR I2C 8-SOIC
14000 pieces
IC RTC CLK/CALENDAR PAR 24-TSSOP
IC RTC CLK/CALENDAR SPI 10-USOP
IC RTC CLK/CALENDAR I2C 8-SOIC
67000 pieces
47000 pieces
IC RTC CLK/CALENDAR I2C 8SOP
IC RTC CLK/CALENDAR PAR 18-DIP
IC RTC CLK/CALENDAR I2C 8SOP
4-BIT PARALLEL I/O CALENDAR CLOCK
11800 pieces
4-BIT PARALLEL I/O CALENDAR CLOCK
44000 pieces
7300 pieces
8690 pieces
11600 pieces
IC RTC CLK/CALENDAR SER SNT-8A
Real Time Clock Serial Clock/Calendar/Alarm/Battery Backup/Interrupt 8-Pin SNT-A T/R / IC RTC CLK/CALENDAR I2C SNT-8A
IC RTC CLK/CALENDAR I2C 12-VSOJ
2620 pieces
IC RTC CLK/CALENDAR I2C 14-SOP
1390 pieces