Clock/Timing - Real Time Clocks

Clock/Timing - Real Time Clocks

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Mounting Type
RoHS Status
Manufacturer Part Number
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Image Part Number Manufacturer Description Series Operating Temperature Features Packaging Mounting Type RoHS Status Manufacturer Part Number Type Voltage - Supply
ISL12028IB27AZ-T Intersil IC RTC CLK/CALENDAR I2C 14-SOIC - -40°C ~ 85°C Alarm, Leap Year, Supervisor, Watchdog Timer Tape & Reel (TR) Surface Mount - - Clock/Calendar 2.7 V ~ 5.5 V
ISL12026AIBZ-T Intersil IC RTC CLK/CALENDAR I2C 8-SOIC - -40°C ~ 85°C Alarm, Leap Year Tape & Reel (TR) Surface Mount - - Clock/Calendar 2.7 V ~ 5.5 V
X1226V8IZ Intersil IC RTC CLK/CALENDAR I2C 8-TSSOP - -40°C ~ 85°C Alarm, Leap Year Tube Surface Mount - - Clock/Calendar 2.7 V ~ 5.5 V
S-35399A03-J8T2G SII Semiconductor Corporation IC RTC CLK/CALENDAR I2C 8SOP - -40°C ~ 85°C Alarm, Leap Year Tape & Reel (TR) Surface Mount - - Clock/Calendar 1.3 V ~ 5.5 V
DS1244W-120+ Maxim Integrated IC RTC PHANTOM PAR 28-DIP - 0°C ~ 70°C Leap Year, NVSRAM Tube Through Hole - - Phantom Time Chip 2.97 V ~ 3.63 V
ISL12058IRTZ-T Intersil IC RTC CLK/CALENDAR I2C 8-TDFN - -40°C ~ 85°C Alarm, Leap Year Tape & Reel (TR) Surface Mount - - Clock/Calendar 1.8 V ~ 3.6 V
DS1685EN-5/T&R Maxim Integrated IC RTC CLK/CALENDAR PAR 24-TSSOP - -40°C ~ 85°C Alarm, NVSRAM, Square Wave Output, Y2K Tape & Reel (TR) Surface Mount - - Clock/Calendar 4.5 V ~ 5.5 V
M48T37Y-70MH1E STMicroelectronics IC RTC CLK/CALENDAR PAR 44-SOH Timekeeper® 0°C ~ 70°C Alarm, Leap Year, Watchdog Timer Tube Surface Mount - - Clock/Calendar 4.5 V ~ 5.5 V
DS1615 Maxim Integrated IC RTC TEMP REC SER 16-DIP - -40°C ~ 85°C Alarm, Leap Year, Unique ID, Y2K Tube Through Hole - - Temperature Recorder 4 V ~ 5.5 V
MCP795W20-I/SL Micrel / Microchip Technology IC RTC CLK/CALENDAR SPI 14-SOIC - -40°C ~ 85°C Alarm, EEPROM, Leap Year, Square Wave Output, SRAM, Watchdog Timer Tube Surface Mount - - Clock/Calendar 1.8 V ~ 3.6 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.