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
Analog Devices / Maxim Integrated Real Time Clock 1M, Nonvolatile, Y2K-Compliant Timekeepi
Datasheet
14In 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 - 40 C + 85 C DS1556W Through Hole Tube

Analog Devices / Maxim Integrated Real Time Clock Portable System Controller
Datasheet
19In Stock
Min.: 1
Mult.: 1

Serial 3-Wire YY-MM-DD-dd HH:MM:SS (24 hr) TSSOP-20 Backup Switching 2.97 V 3.63 V 0 C + 70 C DS1670E SMD/SMT Tube
Analog Devices / Maxim Integrated Real Time Clock I C 32-Bit Binary Counter RTC
Datasheet
130In Stock
Min.: 1
Mult.: 1

Serial 2-Wire, I2C Binary Binary SOIC-8 Backup Switching 2.7 V 5.5 V - 40 C + 85 C DS1672S SMD/SMT Tube
Analog Devices / Maxim Integrated Real Time Clock I C 32-Bit Binary Counter RTC
Datasheet
246In Stock
Min.: 1
Mult.: 1

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

Analog Devices / Maxim Integrated Real Time Clock I C 32-Bit Binary Counter RTC
Datasheet
208In Stock
Min.: 1
Mult.: 1

Serial 2-Wire, I2C Binary Binary uSOP-8 Backup Switching 2.97 V 3.63 V - 40 C + 85 C DS1672U SMD/SMT Tube
Analog Devices / Maxim Integrated Real Time Clock 3V/5V Real-Time Clock
Datasheet
37In Stock
Min.: 1
Mult.: 1

Multiplexed YY-MM-DD-dd HH:MM:SS:hh (12 hr, 24 hr) 242 B PDIP-24 Backup Switching 4.5 V 5.5 V 0 C + 70 C DS1685 Through Hole Tube
Analog Devices / Maxim Integrated Real Time Clock 3V/5V Real-Time Clock
Datasheet
122In Stock
Min.: 1
Mult.: 1

Multiplexed YY-MM-DD-dd HH:MM:SS:hh (12 hr, 24 hr) 242 B TSSOP-24 Backup Switching 4.5 V 5.5 V - 40 C + 85 C DS1685EN SMD/SMT Tube

Analog Devices / Maxim Integrated Real Time Clock 3V/5V Real-Time Clock
Datasheet
90In Stock
Min.: 1
Mult.: 1

Multiplexed YY-MM-DD-dd HH:MM:SS:hh (12 hr, 24 hr) 242 B SO-24 Backup Switching 2.7 V 3.7 V 0 C + 70 C DS1685S SMD/SMT Tube

Analog Devices / Maxim Integrated Real Time Clock 3V/5V Real-Time Clock
Datasheet
132In Stock
Min.: 1
Mult.: 1

Multiplexed YY-MM-DD-dd HH:MM:SS:hh (12 hr, 24 hr) 242 B SO-24 Backup Switching 4.5 V 5.5 V 0 C + 70 C DS1685S SMD/SMT Tube

Analog Devices / Maxim Integrated Real Time Clock 3V/5V Real-Time Clock
Datasheet
20In Stock
Min.: 1
Mult.: 1

Multiplexed YY-MM-DD-dd HH:MM:SS:hh (12 hr, 24 hr) 242 B SOIC-24 Backup Switching 2.7 V 3.7 V - 40 C + 85 C DS1685SN SMD/SMT Tube

Analog Devices / Maxim Integrated Real Time Clock 3V/5V Real-Time Clock
Datasheet
74In Stock
Min.: 1
Mult.: 1

Multiplexed YY-MM-DD-dd HH:MM:SS:hh (12 hr, 24 hr) 242 B SOIC-24 Backup Switching 4.5 V 5.5 V - 40 C + 85 C DS1685SN SMD/SMT Tube
Analog Devices / Maxim Integrated Real Time Clock 3V/5V Real-Time Clock
Datasheet
61In Stock
70Expected 23/03/2026
Min.: 1
Mult.: 1

Multiplexed YY-MM-DD-dd HH:MM:SS:hh (12 hr, 24 hr) 242 B EDIP-24 Integrated Battery 4.5 V 5.5 V 0 C + 70 C DS1687 Through Hole Tube

Analog Devices / Maxim Integrated Real Time Clock 3V/5V Real-Time Clocks
Datasheet
62In Stock
Min.: 1
Mult.: 1

Multiplexed YY-MM-DD-dd HH:MM:SS:hh (12 hr, 24 hr) 2 kB SO-24 Backup Switching 4.5 V 5.5 V 0 C + 70 C DS17285S SMD/SMT 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) 2 kB EDIP-24 Integrated Battery 4.5 V 5.5 V 0 C + 70 C DS17287 Through Hole Tube
Analog Devices / Maxim Integrated Real Time Clock Y2K-Compliant, Nonvolatile Timekeeping R
Datasheet
29In Stock
Min.: 1
Mult.: 1

Parallel YY-MM-DD-dd HH:MM:SS (24 hr) 32 kB EDIP-28 Integrated Battery 2.97 V 3.63 V 0 C + 70 C DS1744W Through Hole Tube
Analog Devices / Maxim Integrated Real Time Clock Y2K-Compliant, Nonvolatile Timekeeping R
Datasheet
15In Stock
Min.: 1
Mult.: 1

Parallel YY-MM-DD-dd HH:MM:SS (24 hr) 32 kB EDIP-28 Integrated Battery 2.97 V 3.63 V - 40 C + 85 C DS1744W Through Hole Tube
Analog Devices / Maxim Integrated Real Time Clock Y2K-Compliant, Nonvolatile Timekeeping R
Datasheet
25In 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 0 C + 70 C DS1747W Through Hole Tube
Analog Devices / Maxim Integrated Real Time Clock 3V/5V Real-Time Clocks
Datasheet
53In Stock
Min.: 1
Mult.: 1

Multiplexed YY-MM-DD-dd HH:MM:SS:hh (12 hr, 24 hr) 4 kB EDIP-24 Integrated Battery 4.5 V 5.5 V 0 C + 70 C DS17487 Through Hole Tube

Analog Devices / Maxim Integrated Real Time Clock 3V/5V Real-Time Clocks
Datasheet
28In Stock
Min.: 1
Mult.: 1

Multiplexed YY-MM-DD-dd HH:MM:SS:hh (12 hr, 24 hr) 8 kB SO-24 Backup Switching 4.5 V 5.5 V 0 C + 70 C DS17885S SMD/SMT Tube
Analog Devices / Maxim Integrated Real Time Clock Extremely Accurate I C RTC with Integrat
Datasheet
110In Stock
Min.: 1
Mult.: 1

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 0 C + 70 C DS3232S SMD/SMT Tube
Analog Devices / Maxim Integrated Real Time Clock Extremely Accurate I C RTC with Integrat
Datasheet
258In Stock
MouseReel Available
Min.: 1
Mult.: 1
Reel: 1.000

SO-20 0 C + 70 C DS3232S SMD/SMT Reel, Cut Tape, MouseReel
Analog Devices / Maxim Integrated Real Time Clock Extremely Accurate I C RTC with Integrat
Datasheet
52In Stock
Min.: 1
Mult.: 1

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 Tube
Analog Devices / Maxim Integrated Real Time Clock 5ppm, I2C Real-Time Clock with Integrated MEMS Oscillator
Datasheet
38In Stock
2.024Expected 23/02/2026
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-8 Backup Switching 1.6 V 5.5 V - 40 C + 85 C SMD/SMT Reel, Cut Tape, MouseReel
Nisshinbo Real Time Clock 4-Wire Real Time Clock IC
Datasheet
83In Stock
2.000Expected 03/04/2026
MouseReel Available
Min.: 1
Mult.: 1
Reel: 2.000

Serial 4-Wire, SPI 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 R2043T SMD/SMT Reel, Cut Tape, MouseReel
Nisshinbo Real Time Clock 2-Wire Real Time Clock IC
Datasheet
709In 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