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Real Time Clock

Real Time Clocks are in stock with same-day shipping at Mouser 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.
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Image	Part #	Mfr.	Description	Datasheet	Availability	Pricing (GBP) Filter the results in the table by unit price based on your quantity.	Qty.	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	Packaging
Real Time Clock Y2K-Compliant, Nonvolatile Timekeeping R DS1744-70+ Analog Devices / Maxim Integrated 1: £48.63 188In Stock	Mfr. Part No. DS1744-70+ Mouser Part No 700-DS1744-70	Analog Devices / Maxim Integrated	Real Time Clock Y2K-Compliant, Nonvolatile Timekeeping R	Datasheet	188In Stock	£48.63 £40.18 £38.05 £37.57	Min.: 1 Mult.: 1	Parallel	YY-MM-DD-dd	HH:MM:SS (24 hr)	EDIP-28	Integrated Battery	4.5 V	5.5 V	0 C	+ 70 C	DS1744	Through Hole	Tube
Real Time Clock Y2K-Compliant, Nonvolatile Timekeeping R DS1744WP-120+ Analog Devices / Maxim Integrated 1: £45.99 53In Stock	Mfr. Part No. DS1744WP-120+ Mouser Part No 700-DS1744WP-120	Analog Devices / Maxim Integrated	Real Time Clock Y2K-Compliant, Nonvolatile Timekeeping R	Datasheet	53In Stock	£45.99 £37.98 £35.99 £33.43 View £33.42 Quote	Min.: 1 Mult.: 1	Parallel	YY-MM-DD-dd	HH:MM:SS (24 hr)	PowerCap Module-34	Backup Switching	2.97 V	3.63 V	0 C	+ 70 C	DS1744WP	Through Hole	Tray
Real Time Clock Y2K-Compliant, Nonvolatile Timekeeping R DS1746-70IND+ Analog Devices / Maxim Integrated 1: £58.26 35In Stock	Mfr. Part No. DS1746-70IND+ Mouser Part No 700-DS1746-70IND	Analog Devices / Maxim Integrated	Real Time Clock Y2K-Compliant, Nonvolatile Timekeeping R	Datasheet	35In Stock	£58.26 £48.13 £45.59 £45.02 View Quote	Min.: 1 Mult.: 1	Parallel	YY-MM-DD-dd	HH:MM:SS (24 hr)	EDIP-32	Integrated Battery	4.5 V	5.5 V	- 40 C	+ 85 C	DS1746	Through Hole	Tube
Real Time Clock Y2K-Compliant, Nonvolatile Timekeeping R DS1747W-120IND+ Analog Devices / Maxim Integrated 1: £65.82 100In Stock	Mfr. Part No. DS1747W-120IND+ Mouser Part No 700-DS1747W-120IND	Analog Devices / Maxim Integrated	Real Time Clock Y2K-Compliant, Nonvolatile Timekeeping R	Datasheet	100In Stock	£65.82 £54.79 £51.59 £48.72 Quote Quote	Min.: 1 Mult.: 1	Parallel	YY-MM-DD-dd	HH:MM:SS (24 hr)	EDIP-32	Integrated Battery	2.97 V	3.63 V	- 40 C	+ 85 C	DS1747W	Through Hole	Tube
Real Time Clock 3V/5V Real-Time Clocks DS17487-3IND+ Analog Devices / Maxim Integrated 1: £18.16 6In Stock	Mfr. Part No. DS17487-3IND+ Mouser Part No 700-DS17487-3IND	Analog Devices / Maxim Integrated	Real Time Clock 3V/5V Real-Time Clocks	Datasheet	6In Stock	£18.16 £17.77 £17.70	Min.: 1 Mult.: 1	Multiplexed	YY-MM-DD-dd	HH:MM:SS (24 hr)	EDIP-24	Backup Switching	2.7 V	3.7 V	- 40 C	+ 85 C	DS17487	Through Hole	Tube
Real Time Clock 5ppm, I2C Real-Time Clock DS3231M+ Analog Devices / Maxim Integrated 1: £11.62 903In Stock	Mfr. Part No. DS3231M+ Mouser Part No 700-DS3231M+	Analog Devices / Maxim Integrated	Real Time Clock 5ppm, I2C Real-Time Clock Learn More about Analog Devices / Maxim Integrated maximds3231m	Datasheet	903In Stock	£11.62 £9.10 £8.45 £7.77 View £7.70 £7.25 £7.08 Quote	Min.: 1 Mult.: 1	I2C	YY-MM-DD-dd	HH:MM:SS (24 hr)	SO-16	Backup Switching	2.3 V	5.5 V	- 40 C	+ 85 C	DS3231M	SMD/SMT	Tube
Real Time Clock Extremely Accurate I C-Integrated RTC/TC DS3231SN# Analog Devices / Maxim Integrated 1: £13.96 483In Stock	Mfr. Part No. DS3231SN# Mouser Part No 700-DS3231SN#	Analog Devices / Maxim Integrated	Real Time Clock Extremely Accurate I C-Integrated RTC/TC	Datasheet	483In Stock	£13.96 £11.07 £10.11 £9.54 View £9.10 £8.93 Quote	Min.: 1 Mult.: 1	I2C	YY-MM-DD-dd	HH:MM:SS (24 hr)	SO-16	Backup Switching	2.3 V	5.5 V	- 40 C	+ 85 C	DS3231SN	SMD/SMT	Tube
Real Time Clock Extremely Accurate I C RTC with Integrat DS3232S# Analog Devices / Maxim Integrated 1: £11.24 142In Stock	Mfr. Part No. DS3232S# Mouser Part No 700-DS3232S#	Analog Devices / Maxim Integrated	Real Time Clock Extremely Accurate I C RTC with Integrat	Datasheet	142In Stock	£11.24 £9.92 £9.24 £8.48 View £8.39 £7.90 £7.43 Quote	Min.: 1 Mult.: 1	I2C	YY-MM-DD-dd	HH:MM:SS:hh (12 hr, 24 hr)	SO-20	Backup Switching	2.3 V	5.5 V	0 C	+ 70 C	DS3232S	SMD/SMT	Tube
Real Time Clock Extremely Accurate I C RTC with Integrat DS3232SN# Analog Devices / Maxim Integrated 1: £12.89 211In Stock	Mfr. Part No. DS3232SN# Mouser Part No 700-DS3232SN#	Analog Devices / Maxim Integrated	Real Time Clock Extremely Accurate I C RTC with Integrat	Datasheet	211In Stock	£12.89 £10.21 £9.32 £8.76 View £8.45 £8.18 £7.97 Quote	Min.: 1 Mult.: 1	I2C	YY-MM-DD-dd	HH:MM:SS:hh (12 hr, 24 hr)	SO-20	Backup Switching	2.3 V	5.5 V	- 40 C	+ 85 C	DS3232SN	SMD/SMT	Tube
Real Time Clock Extremely Accurate SPI Bus RTC with Inte DS3234S# Analog Devices / Maxim Integrated 1: £12.67 500In Stock	Mfr. Part No. DS3234S# Mouser Part No 700-DS3234S#	Analog Devices / Maxim Integrated	Real Time Clock Extremely Accurate SPI Bus RTC with Inte	Datasheet	500In Stock	£12.67 £9.92 £9.24 £8.48 View £8.39 £7.90 £7.72 Quote	Min.: 1 Mult.: 1	SPI	YY-MM-DD-dd	HH:MM:SS:hh (12 hr, 24 hr)	SO-20	Backup Switching	2 V	5.5 V	0 C	+ 70 C	DS3234S	SMD/SMT	Tube
Real Time Clock Extremely Accurate SPI Bus RTC with Inte DS3234S#T&R Analog Devices / Maxim Integrated 1: £11.39 888In Stock	Mfr. Part No. DS3234S#T&R Mouser Part No 700-DS3234S#T&R-	Analog Devices / Maxim Integrated	Real Time Clock Extremely Accurate SPI Bus RTC with Inte	Datasheet	888In Stock	Cut Tape £11.39 £8.92 £8.29 £7.62 View £7.55 £7.53 £6.42 MouseReel Available	Min.: 1 Mult.: 1	SPI	YY-MM-DD-dd	HH:MM:SS:hh (12 hr, 24 hr)	SO-20	Backup Switching	2 V	5.5 V	0 C	+ 70 C	DS3234S	SMD/SMT	Reel, Cut Tape, MouseReel
Real Time Clock Integrated RC17 w/ NDK Crystal MAX31329NELB+ Analog Devices / Maxim Integrated 1: £3.85 2,705In Stock	Mfr. Part No. MAX31329NELB+ Mouser Part No 700-MAX31329NELB+	Analog Devices / Maxim Integrated	Real Time Clock Integrated RC17 w/ NDK Crystal Learn More about Analog Devices / Maxim Integrated maxim max31329 i2c rtc	Datasheet	2,705In Stock	£3.85 £3.78 £3.77 £2.07 Quote Quote	Min.: 1 Mult.: 1	I2C	YY-MM-DD-dd	HH:MM:SS:hh (12 hr, 24 hr)	LGA-10	Backup Switching	1.6 V	5.5 V	- 40 C	+ 85 C		SMD/SMT	Tray
Real Time Clock RTC with power management MAX31341CETB+T Analog Devices / Maxim Integrated 1: £2.24 6,191In Stock	Mfr. Part No. MAX31341CETB+T Mouser Part No 700-MAX31341CETB+T	Analog Devices / Maxim Integrated	Real Time Clock RTC with power management	Datasheet	6,191In Stock	Cut Tape £2.24 £1.68 £1.53 £1.37 Reel £1.18 View £1.30 £1.26 £1.23 £1.15 MouseReel Available	Min.: 1 Mult.: 1 : 2,500	Serial 2-Wire, I2C	YY-MM-DD-dd	HH:MM:SS (24 hr)	TDFN-10	Backup Switching	1.6 V	3.6 V	- 40 C	+ 85 C		SMD/SMT	Reel, Cut Tape, MouseReel
Real Time Clock 5ppm, I2C Real-Time Clock with Integrated MEMS Oscillator MAX31343ETAY+ Analog Devices / Maxim Integrated 1: £5.40 471In Stock	Mfr. Part No. MAX31343ETAY+ Mouser Part No 700-MAX31343ETAY+	Analog Devices / Maxim Integrated	Real Time Clock 5ppm, I2C Real-Time Clock with Integrated MEMS Oscillator	Datasheet	471In Stock	£5.40 £4.16 £3.84 £3.56 View £3.47 £3.09 £3.07 Quote	Min.: 1 Mult.: 1	Serial 2-Wire, I2C	YY-MM-DD-dd	HH:MM:SS (24 hr)	TDFN-8	Backup Switching	1.6 V	5.5 V	- 40 C	+ 85 C		SMD/SMT	Tray
Real Time Clock Real-Time Clock SPI interface with power management, -40 to +85 C, 16-pin QFN AM1815AQ Ambiq 1: £1.32 106In Stock 3,000Expected 08/01/2027	Mfr. Part No. AM1815AQ Mouser Part No 222-AM1815AQ	Ambiq	Real Time Clock Real-Time Clock SPI interface with power management, -40 to +85 C, 16-pin QFN	Datasheet	106In Stock 3,000Expected 08/01/2027	£1.32 £0.969 £0.882 £0.78 View £0.732 £0.705 £0.701 £0.657 £0.643	Min.: 1 Mult.: 1										Artasie SPI w/ Power Management
Real Time Clock 32.768 kHz +/-3 PPM I2C -40/+85C RV-8803-C7-32.768KHZ-3PPM-TA-QC Micro Crystal 1: £2.76 93,761On Order	Mfr. Part No. RV-8803-C7-32.768KHZ-3PPM-TA-QC Mouser Part No 428-202677-MG01	Micro Crystal	Real Time Clock 32.768 kHz +/-3 PPM I2C -40/+85C Learn More about Micro Crystal real time clock modules	Datasheet	93,761On Order On Order Ship Dates Mfr. No: RV-8803-C7-32.768KHZ-3PPM-TA-QC Stock: 0 On Order: 13,761 Expected 11/11/2026 36,000 Expected 05/03/2027 44,000 Expected 30/04/2027 Factory Lead Time: 29 Weeks	Cut Tape £2.76 £2.25 £2.12 £1.91 View Reel £1.45 £1.51 £1.48 £1.45 MouseReel Available	Min.: 1 Mult.: 1 : 1,000	Serial 2-Wire, I2C	YY-MM-DD-dd	HH:MM:SS:hh (12 hr, 24 hr)		No Backup Switching	1.5 V	5.5 V	- 40 C	+ 85 C	RV-8803-C7	SMD/SMT	Reel, Cut Tape, MouseReel
Real Time Clock 32.768kHz SPI Time Acc. 6ppm AEC RV-3149-C3 32.768kHz OPTION A TB QA Micro Crystal 1: £4.39 52In Stock 1,000Expected 18/06/2027	Mfr. Part No. RV-3149-C3 32.768kHz OPTION A TB QA Mouser Part No 428-203641-MG01	Micro Crystal	Real Time Clock 32.768kHz SPI Time Acc. 6ppm AEC Learn More about Micro Crystal real time clock modules	Datasheet	52In Stock 1,000Expected 18/06/2027	Cut Tape £4.39 £3.33 £3.07 £2.78 View Reel £2.54 £2.64 £2.61 £2.54 MouseReel Available	Min.: 1 Mult.: 1 : 1,000	SPI	YY-MM-DD-dd	HH:MM:SS (24 hr)		Backup Switching	1.3 V	5.5 V	- 40 C	+ 125 C	RV-3149	SMD/SMT	Reel, Cut Tape, MouseReel
Real Time Clock 32.768kHz I2C 2.5ppm 3.2x1.5x0.8mm Temperature Sensor & Real Time Clock RV-3032-C7 32.768kHz-2.5PPM-TA-QC Micro Crystal 1: £3.12 50In Stock 35,000Expected 18/12/2026	Mfr. Part No. RV-3032-C7 32.768kHz-2.5PPM-TA-QC Mouser Part No 428-203803-MG01	Micro Crystal	Real Time Clock 32.768kHz I2C 2.5ppm 3.2x1.5x0.8mm Temperature Sensor & Real Time Clock Learn More about Micro Crystal rv 3032 c7 rtc module	Datasheet	50In Stock 35,000Expected 18/12/2026	Cut Tape £3.12 £2.34 £2.15 £1.93 Reel £1.76 View £1.83 £1.79 £1.74 £1.57 MouseReel Available	Min.: 1 Mult.: 1 : 1,000	Serial 2-Wire, I2C	YY-MM-DD-dd	HH:MM:SS:hh (12 hr, 24 hr)		Backup Switching	1.3 V	5.5 V	- 40 C	+ 105 C	RV-3032-C7	SMD/SMT	Reel, Cut Tape, MouseReel
Real Time Clock 32.768kHz SPI 20ppm 2.0x1.2x0.7 AEC-Q200 RV-8063-C8 32.768kHz-20PPM-TA-QA Micro Crystal 1: £1.49 26In Stock 1,000Expected 05/02/2027	Mfr. Part No. RV-8063-C8 32.768kHz-20PPM-TA-QA Mouser Part No 428-204290-MC01	Micro Crystal	Real Time Clock 32.768kHz SPI 20ppm 2.0x1.2x0.7 AEC-Q200 Learn More about Micro Crystal rv 8063 c8 rtc modules	Datasheet	26In Stock 1,000Expected 05/02/2027	Cut Tape £1.49 £1.09 £0.986 £0.871 Reel £0.786 View £0.818 £0.797 £0.747 £0.733 MouseReel Available	Min.: 1 Mult.: 1 : 1,000	Serial 3-Wire, SPI	YY-MM-DD-dd	HH:MM:SS:hh (12 hr, 24 hr)	SON-8		900 mV	5.5 V	- 40 C	+ 85 C	RV-8063-C8	SMD/SMT	Reel, Cut Tape, MouseReel
Real Time Clock 128 NVRAM Serial RTC 3.0 to 3.6 Vcc M41ST87WSS6F STMicroelectronics 1: £5.88 32In Stock 1,350On Order	Mfr. Part No. M41ST87WSS6F Mouser Part No 511-M41ST87WSS6F	STMicroelectronics	Real Time Clock 128 NVRAM Serial RTC 3.0 to 3.6 Vcc	Datasheet	32In Stock 1,350On Order	Cut Tape £5.88 £4.54 £4.21 £3.81 £3.57 Reel £3.44 MouseReel Available	Min.: 1 Mult.: 1 : 1,350	Serial 2-Wire, I2C	YY-MM-DD-dd	HH:MM:SS:hh (12 hr, 24 hr)	SSOP-20	Backup Switching	2.7 V	3.6 V	- 40 C	+ 85 C	M41ST87W	SMD/SMT	Reel, Cut Tape, MouseReel
Real Time Clock Serial 512 (64x8) M41T81M6F STMicroelectronics 1: £2.43 91In Stock 5,000Expected 23/08/2027	Mfr. Part No. M41T81M6F Mouser Part No 511-M41T81M6F	STMicroelectronics	Real Time Clock Serial 512 (64x8)	Datasheet	91In Stock 5,000Expected 23/08/2027	Cut Tape £2.43 £1.82 £1.66 £1.49 View Reel £1.20 £1.41 £1.37 £1.36 £1.20 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 V	5.5 V	- 40 C	+ 85 C	M41T81	SMD/SMT	Reel, Cut Tape, MouseReel
Real Time Clock Serial I2C bus RTC M41T82ZM6F STMicroelectronics 1: £2.66 76In Stock 25,000On Order	Mfr. Part No. M41T82ZM6F Mouser Part No 511-M41T82ZM6F	STMicroelectronics	Real Time Clock Serial I2C bus RTC	Datasheet	76In Stock 25,000On Order On Order Ship Dates Mfr. No: M41T82ZM6F Stock: 76 Can Dispatch Immediately On Order: 12,500 Expected 31/05/2027 12,500 Expected 25/10/2027 Factory Lead Time: 30 Weeks	Cut Tape £2.66 £2.01 £1.84 £1.65 Reel £1.46 View £1.56 £1.53 £1.48 £1.43 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	2.38 V	5.5 V	- 40 C	+ 85 C	M41T82	SMD/SMT	Reel, Cut Tape, MouseReel
Real Time Clock Serial I2C bus RTC M41T83RMY6F STMicroelectronics 1: £4.10 334In Stock	Mfr. Part No. M41T83RMY6F Mouser Part No 511-M41T83RMY6F	STMicroelectronics	Real Time Clock Serial I2C bus RTC	Datasheet	334In Stock	Cut Tape £4.10 £3.17 £2.92 £2.66 Reel £2.39 View £2.55 £2.50 £2.35 Quote 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
Real Time Clock Serial I2C bus RTC M41T83SMY6F STMicroelectronics 1: £3.91 232In Stock 1,000Expected 19/02/2027	Mfr. Part No. M41T83SMY6F Mouser Part No 511-M41T83SMY6F	STMicroelectronics	Real Time Clock Serial I2C bus RTC	Datasheet	232In Stock 1,000Expected 19/02/2027	Cut Tape £3.91 £2.98 £2.74 £2.44 View Reel £2.18 £2.32 £2.28 £2.18 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
Real Time Clock Serial I2C bus RTC M41T83SQA6F STMicroelectronics 1: £3.40 60In Stock 5,000Expected 06/04/2027	Mfr. Part No. M41T83SQA6F Mouser Part No 511-M41T83SQA6F	STMicroelectronics	Real Time Clock Serial I2C bus RTC	Datasheet	60In Stock 5,000Expected 06/04/2027	Cut Tape £3.40 £2.58 £2.37 £2.10 View Reel £1.88 £2.00 £1.96 £1.88 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