Real Time Clocks for Instrument Clusters

Real Time Clocks (RTCs) are IC devices that keep track of time. A typical RTC can provide the time of day as well as the date via a serial bus such as I2C or SPI.  Although similar in many ways, RTCs should not be confused with clock generators, which are used to synchronize various parts of a circuit.

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Results: 21
Select Image Part # Mfr. Description Datasheet Availability Pricing (CAD) Filter the results in the table by unit price based on your quantity. Qty. RoHS ECAD Model Interface Type 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
Renesas / Intersil Real Time Clock REAL TIME CLK W/ ALARM DS1337 COMP 1,191In Stock
$4.06
$3.02
$2.78
$2.49
Min.: 1
Mult.: 1
I2C YY-MM-DD-dd HH:MM:SS (24 hr) SOIC-8 No Backup Switching 1.8 V 3.6 V - 40 C + 85 C ISL12057 SMD/SMT 500 nA Tube

STMicroelectronics Real Time Clock Serial SPI bus RTC 1,019In Stock
Cut Tape
$11.06
$8.83
$7.91
$7.21
Reel
$6.26
Min.: 1
Mult.: 1
: 1,000
Serial YY-MM-DD-dd HH:MM:SS:hh (12 hr, 24 hr) Backup Switching 2.38 V 5.5 V - 40 C + 85 C M41T93 SMD/SMT 8 uA Reel, Cut Tape, MouseReel
Microchip Technology Real Time Clock I2C GP RTCC 1Kb EE 64B SRAM EUI-48 11,841In Stock
$1.60
$1.51
$1.44
Min.: 1
Mult.: 1
I2C YY-MM-DD-dd HH:MM:SS:hh (12 hr, 24 hr) SOIC-8 Backup Switching 1.8 V 5.5 V - 40 C + 85 C SMD/SMT 1.2 uA Tube
Renesas / Intersil Real Time Clock REAL TIME CLK W/ ALARM & TIMR FUNCTNS 851In Stock
$4.06
$3.02
$2.78
$2.48
Min.: 1
Mult.: 1
I2C YY-MM-DD-dd HH:MM:SS (24 hr) TDFN-8 No Backup Switching 1.8 V 3.6 V - 40 C + 85 C ISL12058 SMD/SMT 400 nA Tube
Microchip Technology Real Time Clock I2C GP RTCC 1Kb EE 64B SRAM EUI-64 3,207In Stock
$1.63
$1.51
$1.48
Min.: 1
Mult.: 1
I2C YY-MM-DD-dd HH:MM:SS:hh (12 hr, 24 hr) SOIC-8 Backup Switching 1.8 V 5.5 V - 40 C + 85 C SMD/SMT 1.2 uA Tube

STMicroelectronics Real Time Clock SPI RTC 32.768 kHz 365nA 2.0V to 5.5V 762In Stock
Cut Tape
$11.20
$9.35
$8.65
$7.91
Reel
$7.06
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 8 uA Reel, Cut Tape, MouseReel
STMicroelectronics Real Time Clock Serial SPI bus RTC 507In Stock
Cut Tape
$15.78
$12.33
$11.46
$10.51
Reel
$9.29
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 8 uA Reel, Cut Tape, MouseReel
Microchip Technology Real Time Clock I2C GP RTCC 1Kb EE 64B SRAM ID 3,167In Stock
Cut Tape
$1.77
Reel
$1.48
Min.: 1
Mult.: 1
: 3,300
I2C YY-MM-DD-dd HH:MM:SS:hh (12 hr, 24 hr) TDFN-8 Backup Switching 1.8 V 5.5 V - 40 C + 85 C SMD/SMT 1.2 uA Reel, Cut Tape, MouseReel

NXP Semiconductors Real Time Clock RTC IC with 400 kHz I2C interface in TSSOP8 package. 6,025In Stock
27,500On Order
Cut Tape
$1.37
$0.93
$0.837
$0.779
Reel
$0.655
Min.: 1
Mult.: 1
: 2,500
I2C YY-MM-DD-dd HH:MM:SS:hh (12 hr, 24 hr) TSSOP-8 No Backup Switching 900 mV 5.5 V - 40 C + 85 C PCF85063A SMD/SMT Reel, Cut Tape, MouseReel
Renesas / Intersil Real Time Clock REAL TIME CLK ENHANC CD ESD & MOISTURESIS 433In Stock
$10.74
$8.28
$7.66
$6.98
Min.: 1
Mult.: 1
Serial 2-Wire, I2C YY-MM-DD-dd HH:MM:SS (24 hr) SOIC-20 Backup Switching 2.7 V 5.5 V - 40 C + 85 C ISL12022 SMD/SMT Tube
Renesas / Intersil Real Time Clock REAL TIME CLK W/ ALARM DS1337 COMP 4,696In Stock
Cut Tape
$4.20
$3.14
$2.87
$2.58
Reel
$2.19
Min.: 1
Mult.: 1
: 2,500
I2C YY-MM-DD-dd HH:MM:SS (24 hr) MSOP-8 No Backup Switching 1.8 V 3.6 V - 40 C + 85 C ISL12057 SMD/SMT 500 nA Reel, Cut Tape, MouseReel
Microchip Technology Real Time Clock I2C GP RTCC 1Kb EE 64B SRAM ID 607In Stock
$1.56
$1.45
$1.42
Min.: 1
Mult.: 1
I2C YY-MM-DD-dd HH:MM:SS:hh (12 hr, 24 hr) TSSOP-8 Backup Switching 1.8 V 5.5 V - 40 C + 85 C SMD/SMT 1.2 uA Tube
STMicroelectronics Real Time Clock Serial SPI bus RTC 20In Stock
1,000Expected 2026-12-03
Cut Tape
$14.82
$11.53
$10.71
$9.46
Reel
$8.88
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 8 uA Reel, Cut Tape, MouseReel

STMicroelectronics Real Time Clock Serial SPI bus RTC 165In Stock
Cut Tape
$11.97
$9.85
$8.86
$8.16
Reel
$6.81
Min.: 1
Mult.: 1
: 1,000
SPI 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 M41T93 SMD/SMT 8 uA Reel, Cut Tape, MouseReel
Texas Instruments Real Time Clock Timer Control Periph eral A 926-DP8570AV A 926-DP8570AVX/NOPB 7In Stock
$76.45
$62.63
$58.51
$55.67
Min.: 1
Mult.: 1
Parallel YY-MM-DD-dd HH:MM:SS:hh (12 hr, 24 hr) PLCC-28 Backup Switching 4.5 V 5.5 V - 40 C + 85 C DP8570A SMD/SMT 400 uA Tube
Renesas / Intersil Real Time Clock REAL TIME CLK/CLNDR W/TEMP COMP 8 L 47In Stock
2,500On Order
Cut Tape
$7.66
$5.83
$5.39
$4.88
Reel
$4.64
Min.: 1
Mult.: 1
: 250
Serial 2-Wire, I2C YY-MM-DD-dd HH:MM:SS (24 hr) SOIC-8 Backup Switching 2.7 V 5.5 V - 40 C + 85 C ISL12022 SMD/SMT Reel, Cut Tape, MouseReel
Renesas / Intersil Real Time Clock REAL TIME CLK W/ ALARM DS1337 COMP 97In Stock
17,500On Order
Cut Tape
$4.10
$3.07
$2.81
$2.52
Reel
$2.22
Min.: 1
Mult.: 1
: 2,500
I2C YY-MM-DD-dd HH:MM:SS (24 hr) SOIC-8 No Backup Switching 1.8 V 3.6 V - 40 C + 85 C ISL12057 SMD/SMT 500 nA Reel, Cut Tape, MouseReel
Renesas / Intersil Real Time Clock REAL TIME CLK W/ ALARM DS1337 COMP 751In Stock
6,450On Order
$4.28
$3.20
$2.79
$2.61
Min.: 1
Mult.: 1
I2C YY-MM-DD-dd HH:MM:SS (24 hr) MSOP-8 No Backup Switching 1.8 V 3.6 V - 40 C + 85 C ISL12057 SMD/SMT 500 nA Tube
Renesas / Intersil Real Time Clock REAL TIME CLK W/ ALARM & TIMR FUNCTNS 566In Stock
$4.10
$3.07
$2.81
$2.52
Min.: 1
Mult.: 1
I2C YY-MM-DD-dd HH:MM:SS (24 hr) SOIC-8 No Backup Switching 1.8 V 3.6 V - 40 C + 85 C ISL12058 SMD/SMT 400 nA Tube
Renesas / Intersil Real Time Clock REAL TIME CLK/CLNDR W/TEMP COMP 8 L
6,360On Order
$7.75
$5.80
$5.37
$4.88
Min.: 1
Mult.: 1
Serial 2-Wire, I2C YY-MM-DD-dd HH:MM:SS (24 hr) SOIC-8 Backup Switching 2.7 V 5.5 V - 40 C + 85 C ISL12022 SMD/SMT Tube
Renesas / Intersil Real Time Clock REAL TIME CLK/CLNDR W/TEMP COMP 8 L
2,467Expected 2027-01-12
Cut Tape
$7.52
$5.72
$5.27
$4.78
$4.74
Reel
$4.74
Min.: 1
Mult.: 1
: 2,500
Serial 2-Wire, I2C YY-MM-DD-dd HH:MM:SS (24 hr) SOIC-8 Backup Switching 2.7 V 5.5 V - 40 C + 85 C ISL12022 SMD/SMT Reel, Cut Tape, MouseReel