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 (IDR) 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

Diodes Incorporated Real Time Clock 2-Wire Real-time Clock module
Datasheet
162In Stock
MouseReel Available
Min.: 1
Mult.: 1
Reel: 2.500

Reel, Cut Tape, MouseReel

Diodes Incorporated Real Time Clock Real-time Clock IC
Datasheet
147In Stock
MouseReel Available
Min.: 1
Mult.: 1
Reel: 2.500

Reel, Cut Tape, MouseReel
NXP Semiconductors Real Time Clock Low Power Real time clocks
Datasheet
3.452In Stock
MouseReel Available
Min.: 1
Mult.: 1
Reel: 4.000

SPI YY-MM-DD-dd HH:MM:SS:hh (12 hr, 24 hr) DFN2626-10 No Backup Switching 900 mV 5.5 V - 40 C + 85 C PCF85063B SMD/SMT Reel, Cut Tape, MouseReel
NXP Semiconductors Real Time Clock ULTRA LOW POWER RTC IC
Datasheet
3.613In Stock
MouseReel Available
Min.: 1
Mult.: 1
Reel: 6.000

Serial YY-MM-DD-dd HH:MM:SS (24 hr) Backup Switching 1.8 V 5.5 V - 40 C + 85 C PCF8563 SMD/SMT Reel, Cut Tape, MouseReel

NXP Semiconductors Real Time Clock ULTRA LOW PWR CLOCK RTC IC
Datasheet
3.510In Stock
MouseReel Available
Min.: 1
Mult.: 1
Reel: 2.500

Serial 2-Wire, I2C YY-MM-DD-dd HH:MM:SS (24 hr) TSSOP-8 No Backup Switching 1.8 V 5.5 V - 40 C + 85 C PCF8563 SMD/SMT Reel, Cut Tape, MouseReel
Texas Instruments Real Time Clock Timer Control Periph eral A 926-DP8570AV A 926-DP8570AVX/NOPB
Datasheet
35In Stock
18Expected 08/04/2026
Min.: 1
Mult.: 1

Parallel YY-MM-DD-dd HH:MM:SS:hh (12 hr, 24 hr) 32 B PLCC-28 Backup Switching 4.5 V 5.5 V - 40 C + 85 C DP8570A SMD/SMT Tube
Renesas / Intersil Real Time Clock LDAL TIME CLK & TEMP COMPENSATED CR
Datasheet
2In Stock
MouseReel Available
Min.: 1
Mult.: 1
Reel: 250

I2C YY-MM-DD-dd HH:MM:SS (24 hr) 128 B DFN-20 Backup Switching 2.7 V 5.5 V - 40 C + 85 C ISL12020 SMD/SMT Reel, Cut Tape, MouseReel
Renesas / Intersil Real Time Clock I2C REAL TIME CLOCK/ CALENDAR 8LD
Datasheet
184In Stock
1.200Expected 27/04/2026
Min.: 1
Mult.: 1

I2C YY-MM-DD-dd HH:MM:SS (24 hr) 2 B SOIC-8 Backup Switching 2.7 V 5.5 V - 40 C + 85 C ISL1208 SMD/SMT Tube
Renesas / Intersil Real Time Clock I2CAL TIME CLK/CLNDR 8LD
Datasheet
214In Stock
MouseReel Available
Min.: 1
Mult.: 1
Reel: 250

I2C YY-MM-DD-dd HH:MM:SS (24 hr) 2 B SOIC-8 Backup Switching 2.7 V 5.5 V - 40 C + 85 C ISL1208 SMD/SMT Reel, Cut Tape, MouseReel

Renesas / Intersil Real Time Clock REAL TIME CLKRTC IN
Datasheet
39In Stock
2.500Expected 29/06/2026
MouseReel Available
Min.: 1
Mult.: 1
Reel: 2.500

I2C YY-MM-DD-dd HH:MM:SS (24 hr) 2 B MSOP-10 Backup Switching 2.7 V 5.5 V - 40 C + 85 C ISL1219 SMD/SMT Reel, Cut Tape, MouseReel
Analog Devices / Maxim Integrated Real Time Clock Low-Current I C RTCs for High-ESR Crystals
Datasheet
156In Stock
MouseReel Available
Min.: 1
Mult.: 1
Reel: 2.500

Serial 2-Wire, I2C YY-MM-DD-dd HH:MM:SS:hh (12 hr, 24 hr) TDFN-EP-8 No Backup Switching 1.8 V 5.5 V - 40 C + 85 C DS1341T SMD/SMT Reel, Cut Tape, MouseReel

Analog Devices / Maxim Integrated Real Time Clock Low-Current SPI/3-Wire RTCs
Datasheet
53In Stock
Min.: 1
Mult.: 1

Serial 3-Wire, SPI YY-MM-DD-dd HH:MM:SS:hh (12 hr, 24 hr) 96 B TSSOP-20 Backup Switching 2.7 V 5.5 V - 40 C + 85 C DS1344E SMD/SMT Tube

Analog Devices / Maxim Integrated Real Time Clock Y2K-Compliant Watchdog Real-Time Clocks
Datasheet
20In Stock
Min.: 1
Mult.: 1

Parallel YY-MM-DD-dd HH:MM:SS (24 hr) 256 B SO-28 Backup Switching 3 V 3.6 V - 40 C + 85 C DS1501WZN+ SMD/SMT Tube
Analog Devices / Maxim Integrated Real Time Clock 256k Nonvolatile, Y2K-Compliant Timekeep
Datasheet
19In Stock
Min.: 1
Mult.: 1

Parallel YY-MM-DD-dd HH:MM:SS (24 hr) 32 kB EDIP-32 Integrated Battery 4.5 V 5.5 V 0 C + 70 C DS1554 Through Hole Tube
Analog Devices / Maxim Integrated Real Time Clock 256k Nonvolatile, Y2K-Compliant Timekeep
Datasheet
15In 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 DS1554P SMD/SMT Tray
Analog Devices / Maxim Integrated Real Time Clock 256k Nonvolatile, Y2K-Compliant Timekeep
Datasheet
2In 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 0 C + 70 C DS1554WP SMD/SMT Tray

Analog Devices / Maxim Integrated Real Time Clock Portable System Controller
Datasheet
69In Stock
Min.: 1
Mult.: 1

Serial 3-Wire YY-MM-DD-dd HH:MM:SS (24 hr) TSSOP-20 Backup Switching 4.5 V 5.5 V 0 C + 70 C DS1673E SMD/SMT Tube

Analog Devices / Maxim Integrated Real Time Clock Real-Time Event Recorder
Datasheet
48In Stock
Min.: 1
Mult.: 1

I2C YY-MM-DD-dd HH:MM:SS (24 hr) 32 B PDIP-8 Backup Switching 4.5 V 5.5 V - 40 C + 85 C DS1678 Through Hole Tube

Analog Devices / Maxim Integrated Real Time Clock 3V/5V Real-Time Clocks
Datasheet
10In Stock
Min.: 1
Mult.: 1

Multiplexed YY-MM-DD-dd HH:MM:SS:hh (12 hr, 24 hr) 2 kB SO-24 Backup Switching 2.7 V 3.7 V - 40 C + 85 C DS17285SN SMD/SMT Tube

Analog Devices / Maxim Integrated Real Time Clock Y2K-Compliant, Nonvolatile Timekeeping R
Datasheet
1In Stock
Min.: 1
Mult.: 1

Parallel YY-MM-DD-dd HH:MM:SS (24 hr) 512 kB Backup Switching 4.5 V 5.5 V - 40 C + 85 C DS1747P SMD/SMT Tray

Analog Devices / Maxim Integrated Real Time Clock 3V/5V Real-Time Clocks
Datasheet
5In Stock
Min.: 1
Mult.: 1

Multiplexed YY-MM-DD-dd HH:MM:SS:hh (12 hr, 24 hr) 4 kB SO-24 Backup Switching 4.5 V 5.5 V 0 C + 70 C DS17485S SMD/SMT Tube
Analog Devices / Maxim Integrated Real Time Clock 3V/5V Real-Time Clocks
Datasheet
6In Stock
Min.: 1
Mult.: 1

Multiplexed YY-MM-DD-dd HH:MM:SS (24 hr) 4 kB EDIP-24 Backup Switching 2.7 V 3.7 V - 40 C + 85 C DS17487 Through Hole Tube
Analog Devices / Maxim Integrated Real Time Clock 3V/5V Real-Time Clocks
Datasheet
1In Stock
Min.: 1
Mult.: 1

Multiplexed YY-MM-DD-dd HH:MM:SS:hh (12 hr, 24 hr) 8 kB EDIP-24 Integrated Battery 2.7 V 3.7 V - 40 C + 85 C DS17887 Through Hole Tube
Epson Timing Real Time Clock 32.768kHz-DTCXO 3.4ppm I2C-Bus
Datasheet
710In Stock
MouseReel Available
Min.: 1
Mult.: 1
Reel: 1.000

I2C YY-MM-DD-dd HH:MM:SS (24 hr) Backup Switching 2.5 V 5.5 V - 40 C + 85 C RX8900CE SMD/SMT Reel, Cut Tape, MouseReel
Epson Timing Real Time Clock 32.768kHz-DTCXO 3.4ppm I2C-Bus
Datasheet
Product Comments
1.087In Stock
MouseReel Available
Min.: 1
Mult.: 1
Reel: 250

I2C YY-MM-DD-dd HH:MM:SS (24 hr) Backup Switching 2.5 V 5.5 V - 40 C + 85 C RX8900CE SMD/SMT Reel, Cut Tape, MouseReel