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
Analog Devices / Maxim Integrated Real Time Clock Low-Voltage SPI/3-Wire RTCs with Trickle
Datasheet
6,490In Stock
MouseReel Available
Min.: 1
Mult.: 1
: 3,000

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 DS1391U SMD/SMT Reel, Cut Tape, MouseReel
Analog Devices / Maxim Integrated Real Time Clock I C 32-Bit Binary Counter RTC
Datasheet
5,601In Stock
MouseReel Available
Min.: 1
Mult.: 1
: 2,500

Serial 2-Wire, I2C Binary Binary SOIC-8 Backup Switching 2.97 V 3.63 V - 40 C + 85 C DS1672S SMD/SMT Reel, Cut Tape, MouseReel

Analog Devices / Maxim Integrated Real Time Clock Total-Elapsed-Time Recorder with Alarm
Datasheet
11,718In Stock
MouseReel Available
Min.: 1
Mult.: 1
: 2,500

Serial 2-Wire Binary Binary 10 B SOIC-8 No Backup Switching 2.5 V 5.5 V - 40 C + 85 C DS1682 SMD/SMT Reel, Cut Tape, MouseReel
Analog Devices / Maxim Integrated Real Time Clock TOTAL-ELAPSED-TIME RECORDER WITH AL T&R
Datasheet
6,643In Stock
MouseReel Available
Min.: 1
Mult.: 1
: 2,500

Serial 2-Wire, I2C Binary Binary 16 B SO-8 No Backup Switching 2.5 V 5.5 V - 40 C + 85 C DS1683 SMD/SMT Reel, Cut Tape, MouseReel
Analog Devices / Maxim Integrated Real Time Clock Y2K-Compliant, Nonvolatile Timekeeping R
Datasheet
328In Stock
Min.: 1
Mult.: 1

Parallel YY-MM-DD-dd HH:MM:SS (24 hr) 128 kB EDIP-32 Integrated Battery 4.5 V 5.5 V 0 C + 70 C DS1746 Through Hole Tube
Analog Devices / Maxim Integrated Real Time Clock Y2K-Compliant, Nonvolatile Timekeeping R
Datasheet
298In Stock
Min.: 1
Mult.: 1

Parallel YY-MM-DD-dd HH:MM:SS (24 hr) 512 kB EDIP-32 Integrated Battery 4.5 V 5.5 V 0 C + 70 C DS1747 Through Hole Tube
Analog Devices / Maxim Integrated Real Time Clock Y2K-Compliant, Nonvolatile Timekeeping R
Datasheet
573In Stock
Min.: 1
Mult.: 1

Parallel YY-MM-DD-dd HH:MM:SS (24 hr) 512 kB EDIP-32 Integrated Battery 2.97 V 3.63 V - 40 C + 85 C DS1747W Through Hole Tube
Analog Devices / Maxim Integrated Real Time Clock 5ppm, I2C Real-Time Clock
Datasheet
2,688In Stock
MouseReel Available
Min.: 1
Mult.: 1
: 2,500

I2C YY-MM-DD-dd HH:MM:SS (24 hr) SO-8 Backup Switching 2.3 V 5.5 V - 45 C + 85 C DS3231MZ SMD/SMT Reel, Cut Tape, MouseReel

Analog Devices / Maxim Integrated Real Time Clock Extremely Accurate I C-Integrated RTC/TC
Datasheet
5,842In 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 DS3231SN SMD/SMT Tube

Analog Devices / Maxim Integrated Real Time Clock 5ppm, I C Real-Time Clock with SRAM
Datasheet
2,917In Stock
Min.: 1
Mult.: 1

I2C YY-MM-DD-dd HH:MM:SS:hh (12 hr, 24 hr) 236 B SOIC-8 Backup Switching 2.3 V 4.5 V - 40 C + 85 C DS3232MZ SMD/SMT Tube
Micro Crystal Real Time Clock 32.768 kHz +/-3 PPM I2C -40/+85C
Datasheet
11,583In Stock
MouseReel Available
Min.: 1
Mult.: 1
: 1,000

Serial 2-Wire, I2C YY-MM-DD-dd HH:MM:SS:hh (12 hr, 24 hr) No Backup Switching 1.5 V 5.5 V - 40 C + 85 C RV-8803-C7 SMD/SMT Reel, Cut Tape, MouseReel
Micro Crystal Real Time Clock 32.768kHz SPI Time Acc. 6ppm
Datasheet
1,060In Stock
MouseReel Available
Min.: 1
Mult.: 1
: 1,000

SPI YY-MM-DD-dd HH:MM:SS (24 hr) 8 B Backup Switching 1.3 V 5.5 V - 40 C + 85 C RV-3149 SMD/SMT Reel, Cut Tape, MouseReel
STMicroelectronics Real Time Clock Serial 512 (64x8)
Datasheet
10,437In Stock
MouseReel Available
Min.: 1
Mult.: 1
: 2,500

I2C YY-MM-DD-dd HH:MM:SS:hh (12 hr, 24 hr) 20 B SOIC-8 Backup Switching 2 V 5.5 V - 40 C + 85 C M41T81 SMD/SMT Reel, Cut Tape, MouseReel
STMicroelectronics Real Time Clock Serial SPI bus RTC
Datasheet
5,350In Stock
2,870Expected 2026-05-12
MouseReel Available
Min.: 1
Mult.: 1
: 1,000

SPI YY-MM-DD-dd HH:MM:SS:hh (12 hr, 24 hr) 32 B SOX-18 Backup Switching 2.7 V 5.5 V - 40 C + 85 C M41T93 SMD/SMT Reel, Cut Tape, MouseReel
STMicroelectronics Real Time Clock Serial 512 (64x8)
Datasheet
2,383In Stock
MouseReel Available
Min.: 1
Mult.: 1
: 936

SPI YY-MM-DD-dd HH:MM:SS:hh (12 hr, 24 hr) 64 B SOX-28 Backup Switching 2.7 V 5.5 V - 40 C + 85 C M41T94 SMD/SMT Reel, Cut Tape, MouseReel
STMicroelectronics Real Time Clock 16K (2Kx8) 150ns
Datasheet
880In Stock
Min.: 1
Mult.: 1

Parallel YY-MM-DD-dd HH:MM:SS (24 hr) 2 kB PCDIP-24 Integrated Battery 4.75 V 5.5 V 0 C + 70 C M48T02 Through Hole Tube
STMicroelectronics Real Time Clock 64K (8Kx8) 100ns
Datasheet
1,605In Stock
Min.: 1
Mult.: 1

Parallel YY-MM-DD-dd HH:MM:SS (24 hr) 8 kB PCDIP-28 Integrated Battery 4.75 V 5.5 V 0 C + 70 C M48T08 Through Hole Tube

STMicroelectronics Real Time Clock 64K (8Kx8) 100ns
Datasheet
1,062In 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
ABLIC Real Time Clock 3WIRE REAL TIME CLCK
Datasheet
4,821In Stock
Min.: 1
Mult.: 1
: 5,000

SNT-A-8 S-35192 Reel, Cut Tape
NXP Semiconductors Real Time Clock Low Power Real time clocks
Datasheet
67,289In Stock
MouseReel Available
Min.: 1
Mult.: 1
: 4,000

I2C YY-MM-DD-dd HH:MM:SS:hh (12 hr, 24 hr) HWSON-8 No Backup Switching 900 mV 5.5 V - 40 C + 85 C PCF85063TP SMD/SMT Reel, Cut Tape, MouseReel

NXP Semiconductors Real Time Clock Low Power Real time clocks
Datasheet
123,498In Stock
67,500Expected 2026-05-25
MouseReel Available
Min.: 1
Mult.: 1
: 2,500

Serial 2-Wire, I2C YY-MM-DD-dd HH:MM:SS:hh (12 hr, 24 hr) SO-8 Backup Switching 900 mV 5.5 V - 40 C + 85 C PCF85263A SMD/SMT Reel, Cut Tape, MouseReel
NXP Semiconductors Real Time Clock Binary I2C 1-5V RTC IC
Datasheet
30,492In 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 5.5 V - 40 C + 85 C PCF8563 SMD/SMT Reel, Cut Tape, MouseReel
ABRACON Real Time Clock 32.768 KHZ
Datasheet
12,109In Stock
MouseReel Available
Min.: 1
Mult.: 1
: 3,000

I2C YY-MM-DD-dd HH:MM:SS:hh (12 hr, 24 hr) 256 B QFN-16 Backup Switching 1.7 V 3.6 V - 40 C + 85 C AB18x5 SMD/SMT Reel, Cut Tape, MouseReel
Micro Crystal Real Time Clock 32.768 kHz +/-20 PPM I2C -40/+85C
Datasheet
1,041In Stock
MouseReel Available
Min.: 1
Mult.: 1
: 1,000

Serial 2-Wire, I2C YY-MM-DD-dd HH:MM:SS:hh (12 hr, 24 hr) No Backup Switching 1 V 4.4 V - 40 C + 85 C RV-4162-C7 SMD/SMT Reel, Cut Tape, MouseReel
Micro Crystal Real Time Clock 32.768kHz I2C Time Acc. 1ppm
Datasheet
10,109In Stock
18,000Expected 2026-06-22
MouseReel Available
Min.: 1
Mult.: 1
: 1,000

I2C YY-MM-DD-dd HH:MM:SS (24 hr) 2 B Backup Switching 1.2 V 5.5 V - 40 C + 85 C RV-3028 SMD/SMT Reel, Cut Tape, MouseReel