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.
Results: 890
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Description Datasheet Availability Pricing (CAD) 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
ABRACON Real Time Clock IC RTC Ultra small Low Power CLK/CALENDAR I2C MODULE 2012
Datasheet
700In Stock
MouseReel Available
Min.: 1
Mult.: 1
: 1,000

I2C DFN-8 Integrated Battery 900 mV 5.5 V - 40 C + 85 C AB-RTC-XP-32.768kHz-2 SMD/SMT Reel, Cut Tape, MouseReel
ABRACON Real Time Clock AECQ-200 IC RTC Ultra small Low Power CLK/CALENDAR I2C MODULE 2012
Datasheet
700In Stock
MouseReel Available
Min.: 1
Mult.: 1
: 1,000

I2C DFN-8 Integrated Battery 900 mV 5.5 V - 40 C + 85 C AB-RTC-XPA-32.768kHz-2 SMD/SMT Reel, Cut Tape, MouseReel
Micro Crystal Real Time Clock 32.768kHz I2C 20ppm 2.0x1.2x0.6 AEC-Q200
Datasheet
1,863In Stock
MouseReel Available
Min.: 1
Mult.: 1
: 1,000

I2C YY-MM-DD-dd HH:MM:SS (24 hr) 2 B SON-8 Backup Switching 1.1 V 5.5 V - 40 C + 85 C RV-3028-C8 SMD/SMT Reel, Cut Tape, MouseReel

Analog Devices / Maxim Integrated Real Time Clock Serial Alarm Real-Time Clock
Datasheet
2,963In Stock
Min.: 1
Mult.: 1

Serial 3-Wire, SPI YY-MM-DD HH:MM:SS (24 hr) 96 B TSSOP-20 Backup Switching 2 V 5.5 V - 40 C + 85 C DS1305EN SMD/SMT Tube
Analog Devices / Maxim Integrated Real Time Clock 64 x 8, Serial, I C Real-Time Clock
Datasheet
5,559In Stock
Min.: 1
Mult.: 1

I2C YY-MM-DD HH:MM:SS:hh (12 hr, 24 hr) 56 B SOIC-8 Backup Switching 4.5 V 5.5 V 0 C + 70 C DS1307Z SMD/SMT Tube

Analog Devices / Maxim Integrated Real Time Clock I C RTC with 56-Byte NV RAM
Datasheet
23,969In Stock
Min.: 1
Mult.: 1

I2C YY-MM-DD-dd HH:MM:SS:hh (12 hr, 24 hr) 56 B SOIC-8 Backup Switching 3 V 5.5 V - 40 C + 85 C DS1338Z SMD/SMT Tube
Analog Devices / Maxim Integrated Real Time Clock Y2K-Compliant, Nonvolatile Timekeeping R
Datasheet
631In Stock
Min.: 1
Mult.: 1

Parallel YY-MM-DD-dd HH:MM:SS (24 hr) 32 kB PowerCap Module-34 Backup Switching 2.97 V 3.63 V - 40 C + 85 C DS1744WP SMD/SMT Tray
Analog Devices / Maxim Integrated Real Time Clock Extremely Accurate SPI Bus RTC with Inte
Datasheet
17,475In Stock
Min.: 1
Mult.: 1

SPI YY-MM-DD-dd HH:MM:SS:hh (12 hr, 24 hr) 256 B SO-20 Backup Switching 2 V 5.5 V - 40 C + 85 C DS3234SN SMD/SMT Tube
Microchip Technology Real Time Clock I2C GP RTCC 64B SRAM EUI-48
Datasheet
15,830In Stock
Min.: 1
Mult.: 1

Serial 2-Wire, I2C YY-MM-DD-dd HH:MM:SS:hh (12 hr, 24 hr) 64 B SOIC-8 Backup Switching 1.8 V 5.5 V - 40 C + 85 C SMD/SMT Tube
Analog Devices / Maxim Integrated Real Time Clock I C RTC with Trickle Charger
Datasheet
5,908In Stock
Min.: 1
Mult.: 1

I2C YY-MM-DD-dd HH:MM:SS (24 hr) SO-8 Backup Switching 1.71 V 1.89 V - 40 C + 85 C DS1340Z SMD/SMT Tube

Analog Devices / Maxim Integrated Real Time Clock Trickle-Charge Timekeeping Chip
Datasheet
6,377In Stock
MouseReel Available
Min.: 1
Mult.: 1
: 2,500

Serial 3-Wire YY-MM-DD-dd HH:MM:SS (24 hr) 31 B SOIC-8 Backup Switching 2 V 5.5 V - 40 C + 85 C DS1302ZN SMD/SMT Reel, Cut Tape, MouseReel

Analog Devices / Maxim Integrated Real Time Clock I C Serial Real-Time Clock
Datasheet
2,790In Stock
Min.: 1
Mult.: 1

Serial 2-Wire, I2C YY-MM-DD-dd HH:MM:SS:hh (12 hr, 24 hr) SO-16 Backup Switching 2.97 V 5.5 V - 40 C + 85 C DS1339C SMD/SMT Tube

Analog Devices / Maxim Integrated Real Time Clock I C RTC with Trickle Charger
Datasheet
13,385In Stock
Min.: 1
Mult.: 1

Serial 2-Wire, I2C YY-MM-DD-dd HH:MM:SS (24 hr) SO-16 Backup Switching 2.7 V 3.3 V - 40 C + 85 C DS1340C SMD/SMT Tube

Analog Devices / Maxim Integrated Real Time Clock Low-Voltage SPI/3-Wire RTCs with Trickle
Datasheet
5,664In Stock
MouseReel Available
Min.: 1
Mult.: 1
: 3,000

Serial 3-Wire, SPI YY-MM-DD-dd HH:MM:SS:hh (12 hr, 24 hr) uSOP-10 Backup Switching 2.97 V 5.5 V - 40 C + 85 C DS1394U SMD/SMT Reel, Cut Tape, MouseReel
Analog Devices / Maxim Integrated Real Time Clock Y2K-Compliant, Nonvolatile Timekeeping R
Datasheet
912In 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 - 40 C + 85 C DS1744P SMD/SMT Tray
Analog Devices / Maxim Integrated Real Time Clock Extremely Accurate I C RTC with Integrat
Datasheet
9,887In Stock
MouseReel Available
Min.: 1
Mult.: 1
: 1,000

I2C YY-MM-DD-dd HH:MM:SS:hh (12 hr, 24 hr) 236 B SO-20 Backup Switching 2.3 V 5.5 V - 40 C + 85 C DS3232SN SMD/SMT Reel, Cut Tape, MouseReel
NXP Semiconductors Real Time Clock Low Power Real time clocks
Datasheet
85,737In Stock
MouseReel Available
Min.: 1
Mult.: 1
: 4,000

Serial 2-Wire, I2C YY-MM-DD-dd HH:MM:SS:hh (12 hr, 24 hr) 64 B DFN2626-10 Backup Switching 900 mV 5.5 V - 40 C + 85 C PCF85363A SMD/SMT Reel, Cut Tape, MouseReel
STMicroelectronics Real Time Clock Serial Access Real Time Clock
Datasheet
3,045In Stock
MouseReel Available
Min.: 1
Mult.: 1
: 1,000

I2C YY-MM-DD-dd HH:MM:SS:hh (12 hr, 24 hr) 20 B SOX-18 Backup Switching 2.7 V 5.5 V - 40 C + 85 C M41T81S SMD/SMT Reel, Cut Tape, MouseReel

STMicroelectronics Real Time Clock 64K (8Kx8) 100ns
Datasheet
1,027In Stock
MouseReel Available
Min.: 1
Mult.: 1
: 936

Parallel YY-MM-DD-dd HH:MM:SS (24 hr) 64 kB SOX-28 Backup Switching 4.5 V 5.5 V 0 C + 70 C M48T08Y SMD/SMT Reel, Cut Tape, MouseReel
STMicroelectronics Real Time Clock 64K (8Kx8) 100ns
Datasheet
866In Stock
Min.: 1
Mult.: 1

Parallel YY-MM-DD-dd HH:MM:SS (24 hr) 8 kB PCDIP-28 Integrated Battery 4.5 V 5.5 V 0 C + 70 C M48T18 Through Hole Tube

Analog Devices / Maxim Integrated Real Time Clock Ultra-Low power RTC w/ integrated power
Datasheet
1,658In Stock
Min.: 1
Mult.: 1
: 2,500

MAX31334 Reel, Cut Tape
Renesas / Intersil Real Time Clock REAL TIME CLK W/ ALARM DS1337 COMP
Datasheet
12,368In Stock
MouseReel Available
Min.: 1
Mult.: 1
: 2,500

I2C YY-MM-DD-dd HH:MM:SS (24 hr) SOIC-8 No Backup Switching 1.8 V 3.6 V - 40 C + 85 C ISL12057 SMD/SMT Reel, Cut Tape, MouseReel
STMicroelectronics Real Time Clock Serial I2C bus RTC
Datasheet
13,335In Stock
MouseReel Available
Min.: 1
Mult.: 1
: 2,500

Serial YY-MM-DD-dd HH:MM:SS:hh (12 hr, 24 hr) 32 B SOIC-8 Backup Switching 2.38 V 5.5 V - 40 C + 85 C M41T82 SMD/SMT Reel, Cut Tape, MouseReel

STMicroelectronics Real Time Clock 256K (32Kx8) 70ns
Datasheet
1,423In Stock
MouseReel Available
Min.: 1
Mult.: 1
: 936

Parallel YY-MM-DD-dd HH:MM:SS (24 hr) 256 kB SOX-28 Backup Switching 4.5 V 5.5 V 0 C + 70 C M48T35Y SMD/SMT Reel, Cut Tape, MouseReel
Nisshinbo Real Time Clock 2-Wire Real Time Clock IC
Datasheet
3,003In Stock
2,000Expected 2026-08-05
MouseReel Available
Min.: 1
Mult.: 1
: 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