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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 (HKD) 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 Trickle-Charge Timekeeping Chip DS1302S+ Analog Devices / Maxim Integrated Restricted Availability	Mfr. Part No. DS1302S+ Mouser Part No 700-DS1302S	Analog Devices / Maxim Integrated	Real Time Clock Trickle-Charge Timekeeping Chip Learn More about Analog Devices / Maxim Integrated maxim ds1302 timekeeping chip Mouser does not presently sell this product in your region.	Datasheet			Restricted Availability	Serial 3-Wire	YY-MM-DD-dd	HH:MM:SS (24 hr)	SOIC-8	Backup Switching	2 V	5.5 V	- 40 C	+ 70 C	DS1302S	SMD/SMT	Tube
Real Time Clock Trickle-Charge Timekeeping Chip DS1302SN+ Analog Devices / Maxim Integrated Restricted Availability	Mfr. Part No. DS1302SN+ Mouser Part No 700-DS1302SN	Analog Devices / Maxim Integrated	Real Time Clock Trickle-Charge Timekeeping Chip Learn More about Analog Devices / Maxim Integrated maxim ds1302 timekeeping chip Mouser does not presently sell this product in your region.	Datasheet			Restricted Availability	Serial 3-Wire	YY-MM-DD-dd	HH:MM:SS (24 hr)	SOIC-8	Backup Switching	2 V	5.5 V	- 40 C	+ 85 C	DS1302SN	SMD/SMT	Tube
Real Time Clock Serial Alarm Real-Time Clock DS1305E+T&R Analog Devices / Maxim Integrated Restricted Availability	Mfr. Part No. DS1305E+T&R Mouser Part No 700-DS1305ET&R	Analog Devices / Maxim Integrated	Real Time Clock Serial Alarm Real-Time Clock Mouser does not presently sell this product in your region.	Datasheet			Restricted Availability	Serial 3-Wire, SPI	YY-MM-DD	HH:MM:SS (24 hr)	TSSOP-20	Backup Switching	2 V	5.5 V	0 C	+ 70 C	DS1305E	SMD/SMT	Reel, Cut Tape, MouseReel
Real Time Clock Serial Alarm Real-Time Clock DS1306N+ Analog Devices / Maxim Integrated Restricted Availability	Mfr. Part No. DS1306N+ Mouser Part No 700-DS1306N	Analog Devices / Maxim Integrated	Real Time Clock Serial Alarm Real-Time Clock Mouser does not presently sell this product in your region.	Datasheet			Restricted Availability	Serial 3-Wire, SPI	YY-MM-DD	HH:MM:SS (24 hr)	DIP-16	Backup Switching	2 V	5.5 V	0 C	+ 70 C	DS1306N	Through Hole	Tube
Real Time Clock 64 x 8, Serial, I C Real-Time Clock DS1307N+ Analog Devices / Maxim Integrated Restricted Availability	Mfr. Part No. DS1307N+ Mouser Part No 700-DS1307N	Analog Devices / Maxim Integrated	Real Time Clock 64 x 8, Serial, I C Real-Time Clock Learn More about Analog Devices / Maxim Integrated maxim ds1307 Mouser does not presently sell this product in your region.	Datasheet			Restricted Availability	I2C	YY-MM-DD	HH:MM:SS:hh (12 hr, 24 hr)	PDIP-8	Backup Switching	4.5 V	5.5 V	- 40 C	+ 85 C	DS1307N	Through Hole	Tube
Real Time Clock 64 x 8, Serial, I C Real-Time Clock DS1307Z+T&R Analog Devices / Maxim Integrated Restricted Availability	Mfr. Part No. DS1307Z+T&R Mouser Part No 700-DS1307ZT&R	Analog Devices / Maxim Integrated	Real Time Clock 64 x 8, Serial, I C Real-Time Clock Learn More about Analog Devices / Maxim Integrated maxim ds1307 Mouser does not presently sell this product in your region.	Datasheet			Restricted Availability	I2C	YY-MM-DD	HH:MM:SS:hh (12 hr, 24 hr)	SOIC-8	Backup Switching	4.5 V	5.5 V	0 C	+ 70 C	DS1307Z	SMD/SMT	Reel, Cut Tape, MouseReel
Real Time Clock I C RTC with 56-Byte NV RAM DS1338C-33#T&R Analog Devices / Maxim Integrated Restricted Availability	Mfr. Part No. DS1338C-33#T&R Mouser Part No 700-DS1338C-33#T&R-	Analog Devices / Maxim Integrated	Real Time Clock I C RTC with 56-Byte NV RAM Mouser does not presently sell this product in your region.	Datasheet			Restricted Availability	I2C	YY-MM-DD-dd	HH:MM:SS:hh (12 hr, 24 hr)	SO-16	Backup Switching	3 V	5.5 V	- 40 C	+ 85 C	DS1338C	SMD/SMT	Reel, Cut Tape, MouseReel
Real Time Clock Low-Current I C RTCs for High-ESR Crystals DS1342U+ Analog Devices / Maxim Integrated Restricted Availability	Mfr. Part No. DS1342U+ Mouser Part No 700-DS1342U	Analog Devices / Maxim Integrated	Real Time Clock Low-Current I C RTCs for High-ESR Crystals Learn More about Analog Devices / Maxim Integrated maxim ds134x Mouser does not presently sell this product in your region.	Datasheet			Restricted Availability	I2C	YY-MM-DD-dd	HH:MM:SS:hh (12 hr, 24 hr)	uSOP-8	No Backup Switching	1.8 V	5.5 V	- 40 C	+ 85 C	DS1342U	SMD/SMT	Tube
Real Time Clock I C, 32-Bit Binary Counter Watchdog Clock DS1371U+ Analog Devices / Maxim Integrated Restricted Availability	Mfr. Part No. DS1371U+ Mouser Part No 700-DS1371U	Analog Devices / Maxim Integrated	Real Time Clock I C, 32-Bit Binary Counter Watchdog Clock Mouser does not presently sell this product in your region.	Datasheet			Restricted Availability	I2C	Binary	Binary	uSOP-8	No Backup Switching	1.7 V	5.5 V	- 40 C	+ 85 C	DS1371U	SMD/SMT	Tube
Real Time Clock I C, 32-Bit Binary Counter Watchdog RTC with Trickle Charger and Reset Input/Output DS1374C-33# Analog Devices / Maxim Integrated Restricted Availability	Mfr. Part No. DS1374C-33# Mouser Part No 700-DS1374C-33#	Analog Devices / Maxim Integrated	Real Time Clock I C, 32-Bit Binary Counter Watchdog RTC with Trickle Charger and Reset Input/Output Mouser does not presently sell this product in your region.	Datasheet			Restricted Availability	I2C	Binary	Binary	SO-16	Backup Switching	2.97 V	5.5 V	- 40 C	+ 85 C	DS1374C	SMD/SMT	Tube
Real Time Clock I C RTC/Supervisor with Trickle Charger DS1388Z-33+T&R Analog Devices / Maxim Integrated Restricted Availability	Mfr. Part No. DS1388Z-33+T&R Mouser Part No 700-DS1388Z-33T&R	Analog Devices / Maxim Integrated	Real Time Clock I C RTC/Supervisor with Trickle Charger Mouser does not presently sell this product in your region.	Datasheet			Restricted Availability	I2C	YY-MM-DD-dd	HH:MM:SS:hh (12 hr, 24 hr)	SOIC-8	Backup Switching	2.97 V	3.63 V	- 40 C	+ 85 C	DS1388Z	SMD/SMT	Reel, Cut Tape, MouseReel
Real Time Clock Low-Voltage SPI/3-Wire RTCs with Trickle DS1394U-33+T&R Analog Devices / Maxim Integrated Restricted Availability	Mfr. Part No. DS1394U-33+T&R Mouser Part No 700-DS1394U-33T&R	Analog Devices / Maxim Integrated	Real Time Clock Low-Voltage SPI/3-Wire RTCs with Trickle Mouser does not presently sell this product in your region.	Datasheet			Restricted Availability	Serial 3-Wire, SPI	YY-MM-DD-dd	HH:MM:SS:hh (12 hr, 24 hr)	uSOP-10	Backup Switching	2.97 V	5.5 V	- 40 C	+ 85 C	DS1394U	SMD/SMT	Reel, Cut Tape, MouseReel
Real Time Clock I C 32-Bit Binary Counter RTC DS1672S-33+T&R Analog Devices / Maxim Integrated Restricted Availability	Mfr. Part No. DS1672S-33+T&R Mouser Part No 700-DS1672S-33T&R	Analog Devices / Maxim Integrated	Real Time Clock I C 32-Bit Binary Counter RTC Mouser does not presently sell this product in your region.	Datasheet			Restricted Availability	Serial 2-Wire, I2C	Binary	Binary	SOIC-8	Backup Switching	2.97 V	3.63 V	- 40 C	+ 85 C	DS1672S	SMD/SMT	Reel, Cut Tape, MouseReel
Real Time Clock Total-Elapsed-Time Recorder with Alarm DS1682S+T&R Analog Devices / Maxim Integrated Restricted Availability	Mfr. Part No. DS1682S+T&R Mouser Part No 700-DS1682ST&R	Analog Devices / Maxim Integrated	Real Time Clock Total-Elapsed-Time Recorder with Alarm Mouser does not presently sell this product in your region.	Datasheet			Restricted Availability	Serial 2-Wire	Binary	Binary	SOIC-8	No Backup Switching	2.5 V	5.5 V	- 40 C	+ 85 C	DS1682	SMD/SMT	Reel, Cut Tape, MouseReel
Real Time Clock TOTAL-ELAPSED-TIME RECORDER WITH AL T&R DS1683S+T&R Analog Devices / Maxim Integrated Restricted Availability	Mfr. Part No. DS1683S+T&R Mouser Part No 700-DS1683S+T&R	Analog Devices / Maxim Integrated	Real Time Clock TOTAL-ELAPSED-TIME RECORDER WITH AL T&R Mouser does not presently sell this product in your region.	Datasheet			Restricted Availability	Serial 2-Wire, I2C	Binary	Binary	SO-8	No Backup Switching	2.5 V	5.5 V	- 40 C	+ 85 C	DS1683	SMD/SMT	Reel, Cut Tape, MouseReel
Real Time Clock Y2K-Compliant, Nonvolatile Timekeeping R DS1746W-120+ Analog Devices / Maxim Integrated Restricted Availability	Mfr. Part No. DS1746W-120+ Mouser Part No 700-DS1746W-120	Analog Devices / Maxim Integrated	Real Time Clock Y2K-Compliant, Nonvolatile Timekeeping R Mouser does not presently sell this product in your region.	Datasheet			Restricted Availability	Parallel	YY-MM-DD-dd	HH:MM:SS (24 hr)	EDIP-32	Integrated Battery	2.97 V	3.63 V	0 C	+ 70 C	DS1746W	Through Hole	Tube
Real Time Clock Y2K-Compliant, Nonvolatile Timekeeping R DS1747-70+ Analog Devices / Maxim Integrated Restricted Availability	Mfr. Part No. DS1747-70+ Mouser Part No 700-DS1747-70	Analog Devices / Maxim Integrated	Real Time Clock Y2K-Compliant, Nonvolatile Timekeeping R Mouser does not presently sell this product in your region.	Datasheet			Restricted Availability	Parallel	YY-MM-DD-dd	HH:MM:SS (24 hr)	EDIP-32	Integrated Battery	4.5 V	5.5 V	0 C	+ 70 C	DS1747	Through Hole	Tube
Real Time Clock Y2K-Compliant, Nonvolatile Timekeeping R DS1747W-120IND+ Analog Devices / Maxim Integrated Restricted Availability	Mfr. Part No. DS1747W-120IND+ Mouser Part No 700-DS1747W-120IND	Analog Devices / Maxim Integrated	Real Time Clock Y2K-Compliant, Nonvolatile Timekeeping R Mouser does not presently sell this product in your region.	Datasheet			Restricted Availability	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 1-Wire Time Chip With Interrupt DS2417P+T&R Analog Devices / Maxim Integrated Restricted Availability	Mfr. Part No. DS2417P+T&R Mouser Part No 700-DS2417PT&R	Analog Devices / Maxim Integrated	Real Time Clock 1-Wire Time Chip With Interrupt Mouser does not presently sell this product in your region.	Datasheet			Restricted Availability	Serial 1-Wire	Binary	Binary		Backup Switching	2.5 V	5.5 V	- 40 C	+ 85 C	DS2417P	SMD/SMT	Reel, Cut Tape, MouseReel
Real Time Clock 5ppm, I C Real-Time Clock with SRAM DS3232MZ+ Analog Devices / Maxim Integrated Restricted Availability	Mfr. Part No. DS3232MZ+ Mouser Part No 700-DS3232MZ+	Analog Devices / Maxim Integrated	Real Time Clock 5ppm, I C Real-Time Clock with SRAM Mouser does not presently sell this product in your region.	Datasheet			Restricted Availability	I2C	YY-MM-DD-dd	HH:MM:SS:hh (12 hr, 24 hr)	SOIC-8	Backup Switching	2.3 V	4.5 V	- 40 C	+ 85 C	DS3232MZ	SMD/SMT	Tube
Real Time Clock Low Current Real Time Clock with I2C Int MAX31341BEWC+T Analog Devices / Maxim Integrated Restricted Availability	Mfr. Part No. MAX31341BEWC+T Mouser Part No 700-MAX31341BEWC+T	Analog Devices / Maxim Integrated	Real Time Clock Low Current Real Time Clock with I2C Int Learn More about Analog Devices / Maxim Integrated maxim max31341b clock Mouser does not presently sell this product in your region.	Datasheet			Restricted Availability	Serial 2-Wire, I2C	YY-MM-DD-dd	HH:MM:SS (24 hr)		Backup Switching	1.6 V	3.6 V	- 40 C	+ 85 C	MAX31341	SMD/SMT	Reel, Cut Tape, MouseReel
Real Time Clock 5ppm, I2C Real-Time Clock with Integrated MEMS Oscillator MAX31343ETAY+T Analog Devices / Maxim Integrated Restricted Availability	Mfr. Part No. MAX31343ETAY+T Mouser Part No 700-MAX31343ETAY+T	Analog Devices / Maxim Integrated	Real Time Clock 5ppm, I2C Real-Time Clock with Integrated MEMS Oscillator Mouser does not presently sell this product in your region.	Datasheet			Restricted Availability	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	Reel, Cut Tape, MouseReel
Real Time Clock Real-Time Clock I2C Interface Integrated Circuit, -40 to +85 C, 16-pin QFN AM0805AQ Ambiq 1: HK$7.15 2,609In Stock	Mfr. Part No. AM0805AQ Mouser Part No 222-AM0805AQ	Ambiq	Real Time Clock Real-Time Clock I2C Interface Integrated Circuit, -40 to +85 C, 16-pin QFN Learn More about Ambiq artasie am08x5 clocks	Datasheet	2,609In Stock	HK$7.15 HK$6.03	Min.: 1 Mult.: 1										Artasie I2C
Real Time Clock Real-Time Clock I2C interface with power management, -40 to +85 C, 16-pin QFN AM1805AQ Ambiq 1: HK$8.06 1,527In Stock 15,000Expected 8/1/2027	Mfr. Part No. AM1805AQ Mouser Part No 222-AM1805AQ	Ambiq	Real Time Clock Real-Time Clock I2C interface with power management, -40 to +85 C, 16-pin QFN Learn More about Ambiq am18x5 rtcs	Datasheet	1,527In Stock 15,000Expected 8/1/2027	HK$8.06 HK$6.69	Min.: 1 Mult.: 1										Artasie I2C w/ Power Management
Real Time Clock Serial 512 (64x8) M41ST85WMH6F STMicroelectronics 1: HK$85.41 565In Stock	Mfr. Part No. M41ST85WMH6F Mouser Part No 511-M41ST85WMH6F	STMicroelectronics	Real Time Clock Serial 512 (64x8)	Datasheet	565In Stock	Cut Tape HK$85.41 HK$66.58 HK$61.90 HK$56.72 Reel HK$50.72 View HK$54.09 HK$52.20 HK$49.57 Quote MouseReel Available	Min.: 1 Mult.: 1 : 936	Serial	YY-MM-DD-dd	HH:MM:SS:hh (12 hr, 24 hr)	SOH-28	Backup Switching	2.7 V	3.6 V	- 40 C	+ 85 C	M41ST85W	SMD/SMT	Reel, Cut Tape, MouseReel