Real Time Clock

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Description Datasheet Availability Pricing (TWD) 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
Packaging

STMicroelectronics Real Time Clock 64K (8Kx8) 100ns
Datasheet
997In 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) 150ns
Datasheet
419In 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
STMicroelectronics Real Time Clock 256K (32Kx8) 70ns
Datasheet
392In Stock
Min.: 1
Mult.: 1

Parallel YY-MM-DD-dd HH:MM:SS (24 hr) 32 kB 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
1,073In 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
STMicroelectronics Real Time Clock Low-Pwr serial RTC W/ battry switchover
Datasheet
2,455In Stock
MouseReel Available
Min.: 1
Mult.: 1
: 2,500

Serial 2-Wire, I2C YY-MM-DD-dd HH:MM:SS (24 hr) 8 B SOIC-8 Backup Switching 2 V 5.5 V - 40 C + 85 C M41T01 SMD/SMT Reel, Cut Tape, MouseReel
STMicroelectronics Real Time Clock Serial 160 (20x8)
Datasheet
2,510In Stock
MouseReel Available
Min.: 1
Mult.: 1
: 2,500

Serial 2-Wire, I2C YY-MM-DD-dd HH:MM:SS:hh (12 hr, 24 hr) 20 B SOIC-8 No Backup Switching 2 V 5.5 V - 40 C + 85 C M41T80 SMD/SMT Reel, Cut Tape, MouseReel

STMicroelectronics Real Time Clock Serial SPI bus RTC
Datasheet
1,071In Stock
MouseReel Available
Min.: 1
Mult.: 1
: 1,000

Serial YY-MM-DD-dd HH:MM:SS:hh (12 hr, 24 hr) 32 B Backup Switching 2.38 V 5.5 V - 40 C + 85 C M41T93 SMD/SMT Reel, Cut Tape, MouseReel
STMicroelectronics Real Time Clock Serial I2C bus RTC
Datasheet
795In Stock
MouseReel Available
Min.: 1
Mult.: 1
: 1,000

Serial YY-MM-DD-dd HH:MM:SS:hh (12 hr, 24 hr) 32 B Backup Switching 2.38 V 5.5 V - 40 C + 85 C M41T83 SMD/SMT Reel, Cut Tape, MouseReel

STMicroelectronics Real Time Clock Serial SPI bus RTC
Datasheet
176In Stock
MouseReel Available
Min.: 1
Mult.: 1
: 1,000

SPI YY-MM-DD-dd HH:MM:SS:hh (12 hr, 24 hr) 32 B QFN-16 Backup Switching 3 V 5.5 V - 40 C + 85 C M41T93 SMD/SMT Reel, Cut Tape, MouseReel
STMicroelectronics Real Time Clock 256K (32Kx8) 100ns
Datasheet
360In Stock
MouseReel Available
Min.: 1
Mult.: 1
: 936

Parallel YY-MM-DD-dd HH:MM:SS (24 hr) 256 kB SOIC-44 Backup Switching 3 V 3.6 V 0 C + 70 C M48T37V SMD/SMT Reel, Cut Tape, MouseReel
STMicroelectronics Real Time Clock 2.0 to 5.5V 64 (8X8)
Datasheet
6,361In Stock
5,000Expected 11/25/2026
MouseReel Available
Min.: 1
Mult.: 1
: 2,500

Serial YYYY-MM-DD HH:MM:SS (24 hr) 8 B SOIC-8 Backup Switching 2.7 V 5.5 V - 40 C + 85 C M41T00S SMD/SMT Reel, Cut Tape, MouseReel
STMicroelectronics Real Time Clock Serial 64 (8X8)
Datasheet
9,036In Stock
5,000Expected 8/10/2026
MouseReel Available
Min.: 1
Mult.: 1
: 2,500

Serial 2-Wire, I2C YY-MM-DD-dd HH:MM:SS (24 hr) 8 B SOIC-8 No Backup Switching 2 V 5.5 V - 40 C + 85 C M41T0 SMD/SMT Reel, Cut Tape, MouseReel
STMicroelectronics Real Time Clock Serial I2C bus RTC
Datasheet
10,768In 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 Serial SPI bus RTC
Datasheet
8,031In Stock
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 16K (2Kx8) 150ns
Datasheet
714In 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
1,543In 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) 70ns
Datasheet
1,040In 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 M48T58Y SMD/SMT Reel, Cut Tape, MouseReel
STMicroelectronics Real Time Clock Serial 512 (64x8)
Datasheet
847In Stock
MouseReel Available
Min.: 1
Mult.: 1
: 936

Serial YY-MM-DD-dd HH:MM:SS:hh (12 hr, 24 hr) 64 B SOH-28 Backup Switching 2.7 V 3.6 V - 40 C + 85 C M41ST85W SMD/SMT Reel, Cut Tape, MouseReel

STMicroelectronics Real Time Clock Serial 512 (64x8)
Datasheet
1,331In Stock
MouseReel Available
Min.: 1
Mult.: 1
: 1,000

Serial YY-MM-DD-dd HH:MM:SS:hh (12 hr, 24 hr) 64 B SOX-28 Backup Switching 2.7 V 3.6 V - 40 C + 85 C M41ST85W SMD/SMT Reel, Cut Tape, MouseReel

STMicroelectronics Real Time Clock Serial 1280 (160x8)
Datasheet
653In Stock
1,000Expected 8/17/2026
MouseReel Available
Min.: 1
Mult.: 1
: 1,000

Serial YY-MM-DD-dd HH:MM:SS:hh (12 hr, 24 hr) 160 B SOX-28 Backup Switching 2.7 V 3.6 V - 40 C + 85 C M41ST87W SMD/SMT Reel, Cut Tape, MouseReel

STMicroelectronics Real Time Clock 128 NVRAM Serial RTC 3.0 to 3.6 Vcc
Datasheet
415In Stock
MouseReel Available
Min.: 1
Mult.: 1
: 1,350

Serial 2-Wire, I2C YY-MM-DD-dd HH:MM:SS:hh (12 hr, 24 hr) 160 B SSOP-20 Backup Switching 2.7 V 3.6 V - 40 C + 85 C M41ST87W SMD/SMT Reel, Cut Tape, MouseReel
STMicroelectronics Real Time Clock Serial 64 (8X8)
Datasheet
5,423In Stock
MouseReel Available
Min.: 1
Mult.: 1
: 2,500

Serial 2-Wire, I2C YYYY-MM-DD HH:MM:SS (24 hr) 8 B SOIC-8 Backup Switching 2 V 5.5 V - 40 C + 85 C M41T00 SMD/SMT Reel, Cut Tape, MouseReel
STMicroelectronics Real Time Clock Serial 512 (64x8)
Datasheet
3,437In Stock
MouseReel Available
Min.: 1
Mult.: 1
: 2,500

Serial YY-MM-DD-dd HH:MM:SS (24 hr) 64 B SOIC-8 Backup Switching 2 V 5.5 V - 40 C + 85 C M41T11 SMD/SMT Reel, Cut Tape, MouseReel
STMicroelectronics Real Time Clock Serial 512 (64x8)
Datasheet
713In Stock
MouseReel Available
Min.: 1
Mult.: 1
: 936

Serial YY-MM-DD-dd HH:MM:SS (24 hr) 64 B SOX-28 Backup Switching 2 V 5.5 V - 40 C + 85 C M41T11 SMD/SMT Reel, Cut Tape, MouseReel
STMicroelectronics Real Time Clock Serial 512 (64x8)
Datasheet
9,007In 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