Real Time Clock

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Description Datasheet Availability Pricing (JPY) Filter the results in the table by unit price based on your quantity.
Qty. RoHS ECAD Model RTC Bus Interface
Date Format
Time Format
Package / Case
Battery Backup Switching
Supply Voltage - Min
Supply Voltage - Max
Minimum Operating Temperature
Maximum Operating Temperature
Series
Mounting Style
Time Keeping Current
Packaging
STMicroelectronics Real Time Clock Serial I2C bus RTC
Datasheet
1,678In Stock
5,000Expected 9/24/2026
MouseReel Available
Min.: 1
Mult.: 1
: 2,500

Serial YY-MM-DD-dd HH:MM:SS:hh (12 hr, 24 hr) SOIC-8 Backup Switching 3 V 5.5 V - 40 C + 85 C M41T82 SMD/SMT Reel, Cut Tape, MouseReel

STMicroelectronics Real Time Clock Serial I2C bus RTC
Datasheet
2,750In 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) QFN-16 Backup Switching 3 V 5.5 V - 40 C + 85 C M41T83 SMD/SMT Reel, Cut Tape, MouseReel

STMicroelectronics Real Time Clock SPI RTC 32.768 kHz 365nA 2.0V to 5.5V
Datasheet
1,083In Stock
MouseReel Available
Min.: 1
Mult.: 1
: 1,000

SPI YY-MM-DD-dd HH:MM:SS:hh (12 hr, 24 hr) QFN-16 Backup Switching 2.7 V 5.5 V - 40 C + 85 C M41T93 SMD/SMT Reel, Cut Tape, MouseReel
STMicroelectronics Real Time Clock Serial SPI bus RTC
Datasheet
877In Stock
MouseReel Available
Min.: 1
Mult.: 1
: 1,000

SPI YY-MM-DD-dd HH:MM:SS:hh (12 hr, 24 hr) SOX-18 Backup Switching 2.38 V 5.5 V - 40 C + 85 C M41T93 SMD/SMT Reel, Cut Tape, MouseReel
STMicroelectronics Real Time Clock Serial 512 (64x8)
Datasheet
1,946In Stock
MouseReel Available
Min.: 1
Mult.: 1
: 936

SPI YY-MM-DD-dd HH:MM:SS:hh (12 hr, 24 hr) 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 Serial 512 (64x8)
Datasheet
2,972In Stock
5,000Expected 4/28/2027
MouseReel Available
Min.: 1
Mult.: 1
: 2,500

Serial YY-MM-DD-dd HH:MM:SS:hh (12 hr, 24 hr) SO-16 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
666In Stock
Min.: 1
Mult.: 1

Parallel YY-MM-DD-dd HH:MM:SS (24 hr) PCDIP-24 Integrated Battery 4.75 V 5.5 V 0 C + 70 C M48T02 Through Hole Tube
STMicroelectronics Real Time Clock 16K (2Kx8) 70ns
Datasheet
443In Stock
Min.: 1
Mult.: 1

Parallel YY-MM-DD-dd HH:MM:SS (24 hr) PCDIP-24 Integrated Battery 4.75 V 5.5 V 0 C + 70 C M48T02 Through Hole Tube
STMicroelectronics Real Time Clock 64K (8Kx8) 150ns
Datasheet
347In Stock
240Expected 10/27/2026
Min.: 1
Mult.: 1

Parallel YY-MM-DD-dd HH:MM:SS (24 hr) PCDIP-28 Integrated Battery 4.75 V 5.5 V 0 C + 70 C M48T08 Through Hole Tube
STMicroelectronics Real Time Clock 16K (2Kx8) 150ns
Datasheet
436In Stock
Min.: 1
Mult.: 1

Parallel YY-MM-DD-dd HH:MM:SS (24 hr) PCDIP-24 Integrated Battery 4.5 V 5.5 V 0 C + 70 C M48T12 Through Hole Tube
STMicroelectronics Real Time Clock 64K (8Kx8) 100ns
Datasheet
68In Stock
1,200Expected 9/17/2026
Min.: 1
Mult.: 1

Parallel YY-MM-DD-dd HH:MM:SS (24 hr) PCDIP-28 Integrated Battery 4.5 V 5.5 V 0 C + 70 C M48T18 Through Hole Tube
STMicroelectronics Real Time Clock 256K (32Kx8) 70ns
Datasheet
280In Stock
Min.: 1
Mult.: 1

Parallel YY-MM-DD-dd HH:MM:SS (24 hr) PCDIP-28 Integrated Battery 4.75 V 5.5 V 0 C + 70 C M48T35 Through Hole Tube

STMicroelectronics Real Time Clock 256K (32Kx8) 70ns
Datasheet
520In Stock
MouseReel Available
Min.: 1
Mult.: 1
: 936

Parallel YY-MM-DD-dd HH:MM:SS (24 hr) SOX-28 Backup Switching 4.5 V 5.5 V 0 C + 70 C M48T35Y SMD/SMT Reel, Cut Tape, MouseReel
STMicroelectronics Real Time Clock 256K (32Kx8) 70ns
Datasheet
64In Stock
480Expected 9/22/2026
Min.: 1
Mult.: 1

Parallel YY-MM-DD-dd HH:MM:SS (24 hr) PCDIP-28 Integrated Battery 4.5 V 5.5 V 0 C + 70 C M48T35Y Through Hole Tube
STMicroelectronics Real Time Clock 64K (8Kx8) 70ns
Datasheet
192In Stock
Min.: 1
Mult.: 1

Parallel YY-MM-DD-dd HH:MM:SS (24 hr) PCDIP-28 Integrated Battery 4.75 V 5.5 V 0 C + 70 C M48T58 Through Hole Tube
STMicroelectronics Real Time Clock 64K (8Kx8) 70ns
Datasheet
183In Stock
240Expected 9/17/2026
Min.: 1
Mult.: 1

Parallel YY-MM-DD-dd HH:MM:SS (24 hr) PCDIP-28 Integrated Battery 4.5 V 5.5 V 0 C + 70 C M48T58Y Through Hole Tube
STMicroelectronics Real Time Clock Serial I2C bus RTC
Datasheet
334In 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) SOX-18 Backup Switching 2.7 V 5.5 V - 40 C + 85 C M41T83 SMD/SMT Reel, Cut Tape, MouseReel
STMicroelectronics Real Time Clock Serial I2C bus RTC
Datasheet
249In Stock
1,000Expected 11/11/2026
MouseReel Available
Min.: 1
Mult.: 1
: 1,000

Serial 2-Wire, I2C YY-MM-DD-dd HH:MM:SS:hh (12 hr, 24 hr) SOX-18 Backup Switching 3 V 5.5 V - 40 C + 85 C M41T83 SMD/SMT Reel, Cut Tape, MouseReel
STMicroelectronics Real Time Clock Serial SPI bus RTC
Datasheet
63In Stock
1,000Expected 11/16/2026
MouseReel Available
Min.: 1
Mult.: 1
: 1,000

SPI YY-MM-DD-dd HH:MM:SS:hh (12 hr, 24 hr) SOX-18 Backup Switching 3 V 5.5 V - 40 C + 85 C M41T93 SMD/SMT Reel, Cut Tape, MouseReel
STMicroelectronics Real Time Clock 2.0-5.5V 512 (64x8)
Datasheet
3,970In Stock
15,000On Order
MouseReel Available
Min.: 1
Mult.: 1
: 2,500

I2C YY-MM-DD-dd HH:MM:SS:hh (12 hr, 24 hr) SOIC-8 Backup Switching 2.7 V 5.5 V - 40 C + 85 C M41T81S SMD/SMT Reel, Cut Tape, MouseReel

STMicroelectronics Real Time Clock Battery Swtchovr-RTC
Datasheet
20,800On Order
MouseReel Available
Min.: 1
Mult.: 1
: 1,000

Serial 2-Wire, I2C YY-MM-DD-dd HH:MM:SS:hh (12 hr, 24 hr) QFN-16 Backup Switching 2.7 V 5.5 V - 40 C + 85 C M41T83 SMD/SMT Reel, Cut Tape, MouseReel
STMicroelectronics Real Time Clock Serial Access Real Time Clock
Datasheet
2,000On Order
MouseReel Available
Min.: 1
Mult.: 1
: 1,000

I2C YY-MM-DD-dd HH:MM:SS:hh (12 hr, 24 hr) 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 256K (32Kx8) 70ns
Datasheet
28In Stock
MouseReel Available
Min.: 1
Mult.: 1
: 936

Parallel YY-MM-DD-dd HH:MM:SS (24 hr) SOIC-44 Backup Switching 4.5 V 5.5 V 0 C + 70 C M48T37Y SMD/SMT Reel, Cut Tape, MouseReel
STMicroelectronics Real Time Clock SERIAL RTC W/AUDIO
Datasheet
Non-Stocked Lead-Time 30 Weeks
Min.: 3,000
Mult.: 3,000
: 3,000

Serial 2-Wire, I2C YY-MM-DD-dd HH:MM:SS (24 hr) DFN-16 Backup Switching 3 V 3.6 V 0 C + 70 C M41T00AUD SMD/SMT Reel

STMicroelectronics Real Time Clock Serial I2C bus RTC
Datasheet
Non-Stocked Lead-Time 30 Weeks
MouseReel Available
Min.: 1
Mult.: 1
: 1,000

Serial HH:MM:SS:hh (12 hr, 24 hr) Backup Switching 2.38 V 5.5 V - 40 C + 85 C M41T83 SMD/SMT Reel, Cut Tape, MouseReel