Real Time Clock

Real Time Clock
Real Time Clocks (RTCs) are available at Mouser Electronics from industry leading manufacturers. Mouser is an authorized distributor for many real time clock manufacturers including Analog Devices, Epson, Microchip, Micro Crystal, NXP, Renesas Electronics, STMicroelectronics & more. Please view our large selection of real time clocks below.
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Description Datasheet Availability Pricing (DKK) Filter the results in the table by unit price based on your quantity.
Qty. RoHS ECAD Model RTC Bus Interface
Date Format
Time Format
RTC Memory Size
Package/Case
Battery Backup Switching
Supply Voltage - Min
Supply Voltage - Max
Minimum Operating Temperature
Maximum Operating Temperature
Series
Mounting Style
Qualification
Packaging
Analog Devices / Maxim Integrated Real Time Clock Y2K-Compliant, Nonvolatile Timekeeping R
Datasheet
80In Stock
Min.: 1
Mult.: 1

Parallel YY-MM-DD-dd HH:MM:SS (24 hr) 32 kB PowerCap Module-34 Backup Switching 4.5 V 5.5 V 0 C + 70 C DS1744P SMD/SMT Tray
Analog Devices / Maxim Integrated Real Time Clock Y2K-Compliant, Nonvolatile Timekeeping R
Datasheet
64In Stock
Min.: 1
Mult.: 1

Parallel YY-MM-DD-dd HH:MM:SS (24 hr) 128 kB EDIP-32 Integrated Battery 2.97 V 3.63 V 0 C + 70 C DS1746W Through Hole Tube
Analog Devices / Maxim Integrated Real Time Clock Y2K-Compliant, Nonvolatile Timekeeping R
Datasheet
70In Stock
Min.: 1
Mult.: 1

Parallel YY-MM-DD-dd HH:MM:SS (24 hr) 128 kB PowerCap Module-34 Backup Switching 2.97 V 3.63 V 0 C + 70 C DS1746WP SMD/SMT Tray

Analog Devices / Maxim Integrated Real Time Clock 5ppm, I2C Real-Time Clock
Datasheet
1.164In Stock
Min.: 1
Mult.: 1

I2C YY-MM-DD-dd HH:MM:SS (24 hr) SO-16 Backup Switching 2.3 V 5.5 V - 40 C + 85 C DS3231M SMD/SMT Tube
Analog Devices / Maxim Integrated Real Time Clock 5ppm, I2C Real-Time Clock
Datasheet
1.402In Stock
Min.: 1
Mult.: 1

I2C YY-MM-DD-dd HH:MM:SS (24 hr) SOIC-8 Backup Switching 2.3 V 5.5 V - 40 C + 85 C DS3231MZ SMD/SMT Tube

Analog Devices / Maxim Integrated Real Time Clock Extremely Accurate I C-Integrated RTC/TC
Datasheet
601In Stock
Min.: 1
Mult.: 1

I2C YY-MM-DD-dd HH:MM:SS (24 hr) SO-16 Backup Switching 2.3 V 5.5 V 0 C + 70 C DS3231S SMD/SMT Tube
Analog Devices / Maxim Integrated Real Time Clock Extremely Accurate SPI Bus RTC with Inte
Datasheet
1.547In Stock
MouseReel Available
Min.: 1
Mult.: 1
Reel: 1.000

SPI YY-MM-DD-dd HH:MM:SS:hh (12 hr, 24 hr) 256 B SO-20 Backup Switching 2 V 5.5 V 0 C + 70 C DS3234S SMD/SMT Reel, Cut Tape, MouseReel
Analog Devices / Maxim Integrated Real Time Clock RTC with power management
Datasheet
5.086In Stock
MouseReel Available
Min.: 1
Mult.: 1
Reel: 2.500

Serial 2-Wire, I2C YY-MM-DD-dd HH:MM:SS (24 hr) 64 B TDFN-10 Backup Switching 1.6 V 3.6 V - 40 C + 85 C SMD/SMT Reel, Cut Tape, MouseReel
Analog Devices / Maxim Integrated Real Time Clock 5ppm, I2C Real-Time Clock with Integrated MEMS Oscillator
Datasheet
511In Stock
Min.: 1
Mult.: 1

Serial 2-Wire, I2C YY-MM-DD-dd HH:MM:SS (24 hr) 64 B TDFN-8 Backup Switching 1.6 V 5.5 V - 40 C + 85 C SMD/SMT Tray
ABRACON Real Time Clock RTCs 3725 10-SMD I2C HH:MM:SS (12/24 hr) YY-MM-DD-dd
Datasheet
340In Stock
Min.: 1
Mult.: 1
Reel: 1.000

Serial 4-Wire, SPI YY-MM-DD-dd HH:MM:SS (24 hr) Backup Switching 1.1 V 5.5 V - 40 C + 85 C AB-RTCMC SMD/SMT Reel, Cut Tape
ABRACON Real Time Clock 32.768 KHZ 8 PIN
Datasheet
2.325In Stock
MouseReel Available
Min.: 1
Mult.: 1
Reel: 1.000

I2C YY-MM-DD-dd HH:MM:SS:hh (12 hr, 24 hr) No Backup Switching 1.3 V 4.4 V - 40 C + 85 C AB-RTCMC SMD/SMT Reel, Cut Tape, MouseReel
ABRACON Real Time Clock 32.768 KHZ
Datasheet
435In Stock
MouseReel Available
Min.: 1
Mult.: 1
Reel: 1.000

I2C YY-MM-DD-dd HH:MM:SS (24 hr) Backup Switching 1.2 V 5.5 V - 40 C + 85 C AB-RTCMC SMD/SMT Reel, Cut Tape, MouseReel
ABRACON Real Time Clock 32.768 KHZ IC RTC CLK
Datasheet
1.617In Stock
MouseReel Available
Min.: 1
Mult.: 1
Reel: 1.000

SPI YY-MM-DD-dd HH:MM:SS (24 hr) Backup Switching 1.4 V 5.5 V - 40 C + 125 C AB-RTCMC SMD/SMT Reel, Cut Tape, MouseReel
ABRACON Real Time Clock 32.768 KHZ
Datasheet
815In Stock
MouseReel Available
Min.: 1
Mult.: 1
Reel: 1.000

I2C YY-MM-DD-dd HH:MM:SS (24 hr) Backup Switching 1.4 V 5.5 V - 40 C + 85 C AB-RTCMC SMD/SMT Reel, Cut Tape, MouseReel
Nisshinbo Real Time Clock 2-Wire Real Time Clock IC
Datasheet
7.023In Stock
MouseReel Available
Min.: 1
Mult.: 1
Reel: 2.000

Serial 2-Wire, I2C YY-MM-DD-dd HH:MM:SS:hh (12 hr, 24 hr) TSSOP-10 No Backup Switching 1.7 V 5.5 V - 40 C + 85 C R2023T SMD/SMT Reel, Cut Tape, MouseReel
Nisshinbo Real Time Clock Hi Prec I2C-Bus Real Time Clock Mod
Datasheet
1.462In Stock
MouseReel Available
Min.: 1
Mult.: 1
Reel: 1.000

Serial 2-Wire, I2C YY-MM-DD-dd HH:MM:SS:hh (12 hr, 24 hr) No Backup Switching 1.7 V 5.5 V - 40 C + 85 C R2025S/D SMD/SMT Reel, Cut Tape, MouseReel
Nisshinbo Real Time Clock 2-Wire Real Time Clock IC
Datasheet
2.128In Stock
MouseReel Available
Min.: 1
Mult.: 1
Reel: 2.000

Serial 2-Wire, I2C YY-MM-DD-dd HH:MM:SS:hh (12 hr, 24 hr) SSOP-16 Backup Switching 750 mV 5.5 V - 40 C + 85 C R2051S SMD/SMT Reel, Cut Tape, MouseReel
Nisshinbo Real Time Clock 2-Wire Real Time Clock IC
Datasheet
2.205In Stock
MouseReel Available
Min.: 1
Mult.: 1
Reel: 2.000

Serial 2-Wire, I2C YY-MM-DD-dd HH:MM:SS:hh (12 hr, 24 hr) SSOP-8 Backup Switching 1.7 V 6 V - 40 C + 85 C RS5C372 SMD/SMT Reel, Cut Tape, MouseReel
Nisshinbo Real Time Clock 2-Wire Real Time Clock IC
Datasheet
9.018In Stock
MouseReel Available
Min.: 1
Mult.: 1
Reel: 2.000

Serial 2-Wire, I2C YY-MM-DD-dd HH:MM:SS:hh (12 hr, 24 hr) 16 B SSOP-10 No Backup Switching 2 V 5.5 V - 40 C + 85 C RV5C387 SMD/SMT Reel, Cut Tape, MouseReel
Renesas Electronics Real Time Clock .9RTC BASE
Datasheet
2.950In Stock
MouseReel Available
Min.: 1
Mult.: 1
Reel: 3.000

Serial 2-Wire, I2C YY-MM-DD-dd HH:MM:SS:hh (12 hr, 24 hr) 56 B SOIC-8 Backup Switching 1.3 V 3.7 V - 40 C + 85 C 1338 SMD/SMT Reel, Cut Tape, MouseReel
Micro Crystal Real Time Clock 32.768kHz, 20PPM, Real-Time Clock Module with SPI-Bus
Datasheet
885In Stock
MouseReel Available
Min.: 1
Mult.: 1
Reel: 1.000

SPI YY-MM-DD-dd HH:MM:SS:hh (12 hr, 24 hr) SON-8 900 mV 5.5 V - 40 C + 85 C RV-8063-C8 SMD/SMT Reel, Cut Tape, MouseReel
Micro Crystal Real Time Clock 32.768kHz SPI 20ppm 2.0x1.2x0.7 AEC-Q200
Datasheet
970In Stock
MouseReel Available
Min.: 1
Mult.: 1
Reel: 1.000

Serial 3-Wire, SPI YY-MM-DD-dd HH:MM:SS:hh (12 hr, 24 hr) SON-8 900 mV 5.5 V - 40 C + 85 C RV-8063-C8 SMD/SMT Reel, Cut Tape, MouseReel
Micro Crystal Real Time Clock 32.768kHz I2C 20ppm 2.0x1.2x0.7 AEC-Q200
Datasheet
250In Stock
1.000Expected 27/03/2026
MouseReel Available
Min.: 1
Mult.: 1
Reel: 1.000

I2C YY-MM-DD-dd HH:MM:SS:hh (12 hr, 24 hr) SON-8 900 mV 5.5 V - 40 C + 85 C RV-8263-C8 SMD/SMT Reel, Cut Tape, MouseReel
Ambiq Real Time Clock Real-Time Clock I2C Interface Integrated Circuit, -40 to +85 C, 16-pin QFN
Datasheet
2.922In Stock
Min.: 1
Mult.: 1

Artasie I2C
Ambiq Real Time Clock Real-Time Clock I2C interface with power management, -40 to +85 C, 16-pin QFN
Datasheet
3.389In Stock
6.000Expected 09/06/2026
Min.: 1
Mult.: 1

Artasie I2C w/ Power Management