Clock/Timing - Real Time Clocks

Clock/Timing - Real Time Clocks

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Image Part Number Manufacturer Description Series Operating Temperature Features Packaging Mounting Type RoHS Status Manufacturer Part Number Type Voltage - Supply
M41T81SM6F STMicroelectronics IC RTC CLK/CALENDAR I2C 8-SOIC - -40°C ~ 85°C Alarm, Leap Year, Square Wave Output, Watchdog Timer Cut Tape (CT) Surface Mount - - Clock/Calendar 2.7 V ~ 5.5 V
RX-4574LC:B3 PURE SN Epson IC RTC CLK/CALENDAR SER 12-VSOJ - -40°C ~ 85°C Alarm, Leap Year Tape & Reel (TR) Surface Mount - - Clock/Calendar 1.6 V ~ 5.5 V
DS1339C-2# Maxim Integrated IC RTC CLK/CALENDAR I2C 16-SOIC - -40°C ~ 85°C Alarm, Leap Year, Square Wave Output, Trickle-Charger Tube Surface Mount - - Clock/Calendar 1.8 V ~ 5.5 V
M41T81M6F STMicroelectronics IC RTC CLK/CALENDAR I2C 8-SOIC - -40°C ~ 85°C Alarm, Leap Year, Square Wave Output, Watchdog Timer Cut Tape (CT) Surface Mount - - Clock/Calendar 2 V ~ 5.5 V
DS1693 Maxim Integrated IC RTC CLK/CALENDAR PAR 28-EDIP - 0°C ~ 70°C NVSRAM Tube Through Hole - - Clock/Calendar 2.7 V ~ 3.3 V, 4.5 V ~ 5.5 V
X1288V14Z-4.5AT1 Intersil IC RTC CLK/CALENDAR I2C 14-TSSOP - 0°C ~ 70°C Alarm, Leap Year, Supervisor, Watchdog Timer Tape & Reel (TR) Surface Mount - - Clock/Calendar 4.5 V ~ 5.5 V
BQ4802LYPW N/A IC RTC CLK/CALENDAR PAR 28-TSSOP - 0°C ~ 70°C Alarm, Daylight Savings, Leap Year, Supervisor, Watchdog Timer Tube Surface Mount - - Clock/Calendar 2.7 V ~ 3.6 V
1339-31DCGI8 IDT (Integrated Device Technology) IC RTC CLK/CALENDAR I2C 8-SOIC - -40°C ~ 85°C Alarm, Leap Year, Square Wave Output, Trickle-Charger Tape & Reel (TR) Surface Mount - - Clock/Calendar 3.3 V ~ 5.5 V
ISL12059IBZ-T Intersil IC RTC CLK/CALENDAR I2C 8-SOIC - -40°C ~ 85°C Leap Year Tape & Reel (TR) Surface Mount - - Clock/Calendar 1.8 V ~ 3.6 V
X1228S14 Intersil IC RTC CLK/CALENDAR I2C 14-SOIC - 0°C ~ 70°C Alarm, Leap Year, Supervisor, Watchdog Timer Tube Surface Mount - - Clock/Calendar 2.7 V ~ 5.5 V

About Clock/Timing - Real Time Clocks


Real-time clocks (RTCs) are electronic devices that keep track of the current time and date with high accuracy, independent of external power sources. They typically include a built-in crystal oscillator and a battery backup to ensure continuous timekeeping even when the main power is off. RTCs are commonly used in applications such as consumer electronics, industrial automation, medical devices, and automotive systems where precise timekeeping is essential for scheduling tasks, logging events, and time-stamping data.