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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 (PEN) 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 2-Wire Real Time Clock IC R2223L-E2 Nisshinbo 1: S/ 6.42 5,351In Stock	Mfr. Part # R2223L-E2 Mouser Part # 848-R2223L-E2	Nisshinbo	Real Time Clock 2-Wire Real Time Clock IC		5,351In Stock	Cut Tape S/ 6.42 S/ 4.71 S/ 4.24 S/ 3.74 Reel S/ 3.12 View S/ 3.51 S/ 3.38 S/ 3.34 S/ 3.05 MouseReel Available	Min.: 1 Mult.: 1 : 3,000	Serial 2-Wire, I2C	BCD	BCD	QFN1818-12	No Backup Switching	1.5 V	5.5 V	- 40 C	+ 85 C	R2223L	SMD/SMT	Reel, Cut Tape, MouseReel
Real Time Clock 2-Wire Real Time Clock IC RV5C387A-E2-F Nisshinbo 1: S/ 6.38 6,891In Stock	Mfr. Part # RV5C387A-E2-F Mouser Part # 848-RV5C387A-E2-F	Nisshinbo	Real Time Clock 2-Wire Real Time Clock IC	Datasheet	6,891In Stock	Cut Tape S/ 6.38 S/ 4.67 S/ 4.24 S/ 4.05 Reel S/ 3.42 MouseReel Available	Min.: 1 Mult.: 1 : 2,000	Serial 2-Wire, I2C	YY-MM-DD-dd	HH:MM:SS:hh (12 hr, 24 hr)	SSOP-10	No Backup Switching	2 V	5.5 V	- 40 C	+ 85 C	RV5C387	SMD/SMT	Reel, Cut Tape, MouseReel
Real Time Clock 64k NV SRAM with Phantom Clock DS1243Y-120+ Analog Devices / Maxim Integrated 1: S/ 233.59 1,413In Stock	Mfr. Part # DS1243Y-120+ Mouser Part # 700-DS1243Y-120	Analog Devices / Maxim Integrated	Real Time Clock 64k NV SRAM with Phantom Clock	Datasheet	1,413In Stock	S/ 233.59 S/ 190.93 S/ 180.18 S/ 175.20 View S/ 162.86 Quote	Min.: 1 Mult.: 1 Max.: 1,136	Parallel	YY-MM-DD-dd	HH:MM:SS:hh (12 hr, 24 hr)	EDIP-28	Integrated Battery	4.5 V	5.5 V	0 C	+ 70 C	DS1243Y	Through Hole	Tube
Real Time Clock 4096k NV SRAM with Phantom Clock DS1251WP-120IND+ Analog Devices / Maxim Integrated 1: S/ 365.47 320In Stock	Mfr. Part # DS1251WP-120IND+ Mouser Part # 700-DS1251WP-120IND	Analog Devices / Maxim Integrated	Real Time Clock 4096k NV SRAM with Phantom Clock	Datasheet	320In Stock	S/ 365.47 S/ 304.35 S/ 286.53 S/ 270.61	Min.: 1 Mult.: 1 Max.: 256	Parallel	YY-MM-DD-dd	HH:MM:SS:hh (12 hr, 24 hr)	PowerCap Module-34		2.97 V	3.63 V	- 40 C	+ 85 C	DS1251WP	SMD/SMT	Tray
Real Time Clock Real-Time Clocks DS12885S+T&R Analog Devices / Maxim Integrated 1: S/ 33.44 484In Stock	Mfr. Part # DS12885S+T&R Mouser Part # 700-DS12885ST&R	Analog Devices / Maxim Integrated	Real Time Clock Real-Time Clocks	Datasheet	484In Stock	Cut Tape S/ 33.44 S/ 32.70 S/ 32.00 S/ 31.33 S/ 30.87 S/ 30.87 MouseReel Available	Min.: 1 Mult.: 1 Max.: 387	Multiplexed	YY-MM-DD-dd	HH:MM:SS (24 hr)	SO-24		4.5 V	5.5 V	0 C	+ 70 C	DS12885S	SMD/SMT	Reel, Cut Tape, MouseReel
Real Time Clock Trickle-Charge Timekeeping Chip DS1302S+ Analog Devices / Maxim Integrated 1: S/ 23.39 439In Stock	Mfr. Part # DS1302S+ Mouser Part # 700-DS1302S	Analog Devices / Maxim Integrated	Real Time Clock Trickle-Charge Timekeeping Chip Learn More about Analog Devices / Maxim Integrated maxim ds1302 timekeeping chip	Datasheet	439In Stock	S/ 23.39 S/ 17.94 S/ 16.58 S/ 15.06 S/ 14.32	Min.: 1 Mult.: 1 Max.: 351	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 DS1302ZN+T&R Analog Devices / Maxim Integrated 1: S/ 24.99 4,281In Stock	Mfr. Part # DS1302ZN+T&R Mouser Part # 700-DS1302ZNT&R	Analog Devices / Maxim Integrated	Real Time Clock Trickle-Charge Timekeeping Chip Learn More about Analog Devices / Maxim Integrated maxim ds1302 timekeeping chip	Datasheet	4,281In Stock	Cut Tape S/ 24.99 S/ 19.15 S/ 17.71 S/ 16.11 S/ 15.80 Reel S/ 13.55 MouseReel Available	Min.: 1 Mult.: 1 Max.: 3,432 : 2,500	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	DS1302ZN	SMD/SMT	Reel, Cut Tape, MouseReel
Real Time Clock Serial Alarm Real-Time Clock DS1305E+T&R Analog Devices / Maxim Integrated 1: S/ 37.80 2,765In Stock	Mfr. Part # DS1305E+T&R Mouser Part # 700-DS1305ET&R	Analog Devices / Maxim Integrated	Real Time Clock Serial Alarm Real-Time Clock	Datasheet	2,765In Stock	Cut Tape S/ 37.80 S/ 29.43 S/ 27.33 S/ 25.03 S/ 24.06 Reel S/ 24.06 MouseReel Available	Min.: 1 Mult.: 1 Max.: 2,216 : 2,500	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 1: S/ 51.42 185In Stock	Mfr. Part # DS1306N+ Mouser Part # 700-DS1306N	Analog Devices / Maxim Integrated	Real Time Clock Serial Alarm Real-Time Clock	Datasheet	185In Stock	S/ 51.42 S/ 40.25 S/ 37.45 S/ 34.37	Min.: 1 Mult.: 1 Max.: 148	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 1: S/ 30.40 364In Stock	Mfr. Part # DS1307N+ Mouser Part # 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	Datasheet	364In Stock	S/ 30.40 S/ 23.47 S/ 21.21 S/ 19.81 S/ 18.61	Min.: 1 Mult.: 1 Max.: 291	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 I C RTC with 56-Byte NV RAM DS1338C-33#T&R Analog Devices / Maxim Integrated 1: S/ 44.92 1,410In Stock	Mfr. Part # DS1338C-33#T&R Mouser Part # 700-DS1338C-33#T&R-	Analog Devices / Maxim Integrated	Real Time Clock I C RTC with 56-Byte NV RAM	Datasheet	1,410In Stock	Cut Tape S/ 44.92 S/ 35.07 S/ 32.62 S/ 29.89 S/ 29.47 Reel S/ 24.99 MouseReel Available	Min.: 1 Mult.: 1 Max.: 1,128 : 1,000	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 I C RTC with 56-Byte NV RAM DS1338U-33+T&R Analog Devices / Maxim Integrated 1: S/ 25.22 3,657In Stock	Mfr. Part # DS1338U-33+T&R Mouser Part # 700-DS1338U-33T&R	Analog Devices / Maxim Integrated	Real Time Clock I C RTC with 56-Byte NV RAM	Datasheet	3,657In Stock	Cut Tape S/ 25.22 S/ 19.31 S/ 17.87 S/ 16.23 View Reel S/ 15.10 S/ 15.45 S/ 15.18 S/ 15.10 S/ 15.10 MouseReel Available	Min.: 1 Mult.: 1 Max.: 2,925 : 3,000	Serial 2-Wire, I2C	YY-MM-DD-dd	HH:MM:SS:hh (12 hr, 24 hr)	uSOP-8	Backup Switching	3 V	5.5 V	- 40 C	+ 85 C	DS1338U	SMD/SMT	Reel, Cut Tape, MouseReel
Real Time Clock I C RTC with 56-Byte NV RAM DS1338Z-18+ Analog Devices / Maxim Integrated 1: S/ 25.85 2,114In Stock	Mfr. Part # DS1338Z-18+ Mouser Part # 700-DS1338Z-18	Analog Devices / Maxim Integrated	Real Time Clock I C RTC with 56-Byte NV RAM	Datasheet	2,114In Stock	S/ 25.85 S/ 19.81 S/ 18.29 S/ 15.53 View S/ 15.34 S/ 15.18	Min.: 1 Mult.: 1 Max.: 2,187	Serial 2-Wire, I2C	YY-MM-DD-dd	HH:MM:SS:hh (12 hr, 24 hr)	SOIC-8	Backup Switching	1.71 V	5.5 V	- 40 C	+ 85 C	DS1338Z	SMD/SMT	Tube
Real Time Clock Low-Current I C RTCs for High-ESR Crystals DS1342U+ Analog Devices / Maxim Integrated 1: S/ 10.24 1,063In Stock	Mfr. Part # DS1342U+ Mouser Part # 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	Datasheet	1,063In Stock	S/ 10.24 S/ 10.00 S/ 9.81 S/ 9.61 View S/ 9.46 S/ 9.30	Min.: 1 Mult.: 1 Max.: 850	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 1: S/ 18.65 2,294In Stock	Mfr. Part # DS1371U+ Mouser Part # 700-DS1371U	Analog Devices / Maxim Integrated	Real Time Clock I C, 32-Bit Binary Counter Watchdog Clock	Datasheet	2,294In Stock	S/ 18.65 S/ 15.96 S/ 13.55 S/ 13.23 View S/ 12.81 S/ 12.65	Min.: 1 Mult.: 1 Max.: 1,835	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 1: S/ 51.23 685In Stock	Mfr. Part # DS1374C-33# Mouser Part # 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	Datasheet	685In Stock	S/ 51.23 S/ 40.09 S/ 36.36 S/ 34.22 View S/ 33.16 S/ 31.92	Min.: 1 Mult.: 1 Max.: 548	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 1: S/ 33.55 2,731In Stock	Mfr. Part # DS1388Z-33+T&R Mouser Part # 700-DS1388Z-33T&R	Analog Devices / Maxim Integrated	Real Time Clock I C RTC/Supervisor with Trickle Charger	Datasheet	2,731In Stock	Cut Tape S/ 33.55 S/ 25.89 S/ 23.98 S/ 21.91 View Reel S/ 20.20 S/ 20.59 S/ 20.55 S/ 20.20 S/ 20.20 MouseReel Available	Min.: 1 Mult.: 1 Max.: 2,184 : 2,500	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 1: S/ 25.22 3,920In Stock	Mfr. Part # DS1394U-33+T&R Mouser Part # 700-DS1394U-33T&R	Analog Devices / Maxim Integrated	Real Time Clock Low-Voltage SPI/3-Wire RTCs with Trickle	Datasheet	3,920In Stock	Cut Tape S/ 25.22 S/ 19.31 S/ 17.87 S/ 16.23 View Reel S/ 14.40 S/ 15.45 S/ 15.18 S/ 15.10 S/ 14.40 MouseReel Available	Min.: 1 Mult.: 1 Max.: 3,136 : 3,000	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 Total-Elapsed-Time Recorder with Alarm DS1682S+T&R Analog Devices / Maxim Integrated 1: S/ 36.82 10,035In Stock	Mfr. Part # DS1682S+T&R Mouser Part # 700-DS1682ST&R	Analog Devices / Maxim Integrated	Real Time Clock Total-Elapsed-Time Recorder with Alarm	Datasheet	10,035In Stock	Cut Tape S/ 36.82 S/ 28.69 S/ 26.59 S/ 24.37 S/ 23.74 Reel S/ 20.86 MouseReel Available	Min.: 1 Mult.: 1 Max.: 8,028 : 2,500	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 1: S/ 31.02 5,849In Stock	Mfr. Part # DS1683S+T&R Mouser Part # 700-DS1683S+T&R	Analog Devices / Maxim Integrated	Real Time Clock TOTAL-ELAPSED-TIME RECORDER WITH AL T&R	Datasheet	5,849In Stock	Cut Tape S/ 31.02 S/ 23.94 S/ 22.15 S/ 20.20 S/ 19.35 Reel S/ 16.62 MouseReel Available	Min.: 1 Mult.: 1 Max.: 4,695 : 2,500	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 DS1744-70+ Analog Devices / Maxim Integrated 1: S/ 252.16 263In Stock	Mfr. Part # DS1744-70+ Mouser Part # 700-DS1744-70	Analog Devices / Maxim Integrated	Real Time Clock Y2K-Compliant, Nonvolatile Timekeeping R	Datasheet	263In Stock	S/ 252.16 S/ 208.29 S/ 197.27 S/ 194.78	Min.: 1 Mult.: 1 Max.: 231	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 DS1746P-70+ Analog Devices / Maxim Integrated 1: S/ 259.71 33In Stock	Mfr. Part # DS1746P-70+ Mouser Part # 700-DS1746P-70	Analog Devices / Maxim Integrated	Real Time Clock Y2K-Compliant, Nonvolatile Timekeeping R	Datasheet	33In Stock	S/ 259.71 S/ 214.52 S/ 203.23 S/ 200.62 Quote Quote	Min.: 1 Mult.: 1	Parallel	YY-MM-DD-dd	HH:MM:SS (24 hr)	PowerCap Module-34	Backup Switching	4.5 V	5.5 V	0 C	+ 70 C	DS1746P	SMD/SMT	Tray
Real Time Clock Y2K-Compliant, Nonvolatile Timekeeping R DS1746W-120+ Analog Devices / Maxim Integrated 1: S/ 268.93 110In Stock	Mfr. Part # DS1746W-120+ Mouser Part # 700-DS1746W-120	Analog Devices / Maxim Integrated	Real Time Clock Y2K-Compliant, Nonvolatile Timekeeping R	Datasheet	110In Stock	S/ 268.93 S/ 222.14 S/ 210.39	Min.: 1 Mult.: 1 Max.: 88	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 1: S/ 339.46 295In Stock	Mfr. Part # DS1747-70+ Mouser Part # 700-DS1747-70	Analog Devices / Maxim Integrated	Real Time Clock Y2K-Compliant, Nonvolatile Timekeeping R	Datasheet	295In Stock	S/ 339.46 S/ 282.63 S/ 266.09 S/ 251.34	Min.: 1 Mult.: 1 Max.: 236	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 1: S/ 341.22 223In Stock	Mfr. Part # DS1747W-120IND+ Mouser Part # 700-DS1747W-120IND	Analog Devices / Maxim Integrated	Real Time Clock Y2K-Compliant, Nonvolatile Timekeeping R	Datasheet	223In Stock	S/ 341.22 S/ 284.07 S/ 267.45 S/ 252.62	Min.: 1 Mult.: 1 Max.: 178	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