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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.	RTC Bus Interface	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 DS1744-70IND+ Analog Devices / Maxim Integrated 1: £55.98 170In Stock	Mfr. Part No. DS1744-70IND+ Mouser Part No 700-DS1744-70IND	Analog Devices / Maxim Integrated	Real Time Clock Y2K-Compliant, Nonvolatile Timekeeping R	Datasheet	170In Stock	£55.98 £46.23 £43.79 £43.25	Min.: 1 Mult.: 1 Max.: 136	Parallel	YY-MM-DD-dd	HH:MM:SS (24 hr)	EDIP-28	Integrated Battery	4.5 V	5.5 V	- 40 C	+ 85 C	DS1744	Through Hole	Tube
Real Time Clock 3V/5V Real-Time Clocks DS17887-5+ Analog Devices / Maxim Integrated 1: £32.65 72In Stock	Mfr. Part No. DS17887-5+ Mouser Part No 700-DS17887-5	Analog Devices / Maxim Integrated	Real Time Clock 3V/5V Real-Time Clocks	Datasheet	72In Stock	£32.65 £26.68 £25.18 £24.48 View £22.77 Quote	Min.: 1 Mult.: 1	Multiplexed	YY-MM-DD-dd	HH:MM:SS:hh (12 hr, 24 hr)	EDIP-24	Integrated Battery	4.5 V	5.5 V	0 C	+ 70 C	DS17887	Through Hole	Tube
Real Time Clock Ultra-Low power RTC w/ integrated power MAX31334EWC+T Analog Devices / Maxim Integrated 1: £2.98 1,499In Stock	Mfr. Part No. MAX31334EWC+T Mouser Part No 700-MAX31334EWC+T	Analog Devices / Maxim Integrated	Real Time Clock Ultra-Low power RTC w/ integrated power Learn More about Analog Devices / Maxim Integrated maxim max31334 rtc	Datasheet	1,499In Stock	Cut Tape £2.98 £2.22 £2.03 £1.82 View £1.72 £1.68 £1.60 £1.60	Min.: 1 Mult.: 1 Max.: 1,199										MAX31334		Reel, Cut Tape
Real Time Clock 3V/5V Real-Time Clock DS1685EN-3+T&R Analog Devices / Maxim Integrated 1: £6.17 1,069In Stock	Mfr. Part No. DS1685EN-3+T&R Mouser Part No 700-DS1685EN-3T&R	Analog Devices / Maxim Integrated	Real Time Clock 3V/5V Real-Time Clock	Datasheet	1,069In Stock	Cut Tape £6.17 £6.03 £6.01 Reel £6.01 MouseReel Available	Min.: 1 Mult.: 1 Max.: 855 : 1,000	Multiplexed	YY-MM-DD-dd	HH:MM:SS:hh (12 hr, 24 hr)	TSSOP-24	Backup Switching	2.7 V	3.7 V	- 40 C	+ 85 C	DS1685EN	SMD/SMT	Reel, Cut Tape, MouseReel
Real Time Clock 3V/5V Real-Time Clock DS1687-5IND+ Analog Devices / Maxim Integrated 1: £24.96 86In Stock	Mfr. Part No. DS1687-5IND+ Mouser Part No 700-DS1687-5IND	Analog Devices / Maxim Integrated	Real Time Clock 3V/5V Real-Time Clock	Datasheet	86In Stock	£24.96 £20.20 £19.01 £18.23 £17.08	Min.: 1 Mult.: 1	Multiplexed	YY-MM-DD-dd	HH:MM:SS:hh (12 hr, 24 hr)	EDIP-24	Integrated Battery	4.5 V	5.5 V	- 40 C	+ 85 C	DS1687	Through Hole	Tube
Real Time Clock Y2K-Compliant, Nonvolatile Timekeeping R DS1746WP-120+ Analog Devices / Maxim Integrated 1: £49.29 75In Stock	Mfr. Part No. DS1746WP-120+ Mouser Part No 700-DS1746WP-120	Analog Devices / Maxim Integrated	Real Time Clock Y2K-Compliant, Nonvolatile Timekeeping R	Datasheet	75In Stock	£49.29 £40.71 £38.33 £36.63 Quote 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	DS1746WP	SMD/SMT	Tray
Real Time Clock I C Serial Real-Time Clock DS1337C#T&R Analog Devices / Maxim Integrated 1: £4.00 1,316In Stock	Mfr. Part No. DS1337C#T&R Mouser Part No 700-DS1337C#T&R-	Analog Devices / Maxim Integrated	Real Time Clock I C Serial Real-Time Clock Learn More about Analog Devices / Maxim Integrated maxim ds1337 rtc	Datasheet	1,316In Stock	Cut Tape £4.00 £3.91 £3.89 Reel £3.89 MouseReel Available	Min.: 1 Mult.: 1 Max.: 1,052 : 1,000	I2C	YY-MM-DD-dd	HH:MM:SS:hh (12 hr, 24 hr)	SO-16	No Backup Switching	1.8 V	5.5 V	- 40 C	+ 85 C	DS1337C	SMD/SMT	Reel, Cut Tape, MouseReel
Real Time Clock I C Serial Real-Time Clock DS1339U-3+ Analog Devices / Maxim Integrated 1: £2.91 1,309In Stock	Mfr. Part No. DS1339U-3+ Mouser Part No 700-DS1339U-3	Analog Devices / Maxim Integrated	Real Time Clock I C Serial Real-Time Clock Learn More about Analog Devices / Maxim Integrated maxim hvac solutions	Datasheet	1,309In Stock	£2.91 £2.85 £2.83	Min.: 1 Mult.: 1 Max.: 1,047	Serial 2-Wire, I2C	YY-MM-DD-dd	HH:MM:SS:hh (12 hr, 24 hr)	uSOP-8	Backup Switching	2.7 V	3.3 V	- 40 C	+ 85 C	DS1339U	SMD/SMT	Tube
Real Time Clock I C Serial Real-Time Clock DS1339U-3+T&R Analog Devices / Maxim Integrated 1: £2.91 2,423In Stock	Mfr. Part No. DS1339U-3+T&R Mouser Part No 700-DS1339U-3T&R	Analog Devices / Maxim Integrated	Real Time Clock I C Serial Real-Time Clock Learn More about Analog Devices / Maxim Integrated maxim hvac solutions	Datasheet	2,423In Stock	Cut Tape £2.91 £2.85 £2.83 £2.83 MouseReel Available	Min.: 1 Mult.: 1 Max.: 1,938	Serial 2-Wire, I2C	YY-MM-DD-dd	HH:MM:SS:hh (12 hr, 24 hr)	uSOP-8	Backup Switching	2.7 V	3.3 V	- 40 C	+ 85 C	DS1339U	SMD/SMT	Reel, Cut Tape, MouseReel
Real Time Clock Serial Alarm Real-Time Clock DS1306N+ Analog Devices / Maxim Integrated 1: £9.92 185In Stock	Mfr. Part No. DS1306N+ Mouser Part No 700-DS1306N	Analog Devices / Maxim Integrated	Real Time Clock Serial Alarm Real-Time Clock	Datasheet	185In Stock	£9.92 £7.76 £7.22 £6.63	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 I C Serial Real-Time Clock DS1337+ Analog Devices / Maxim Integrated 1: £4.37 2,613In Stock	Mfr. Part No. DS1337+ Mouser Part No 700-DS1337	Analog Devices / Maxim Integrated	Real Time Clock I C Serial Real-Time Clock Learn More about Analog Devices / Maxim Integrated maxim ds1337 rtc	Datasheet	2,613In Stock	£4.37 £3.33 £3.06 £2.52 View £2.42 £2.38	Min.: 1 Mult.: 1 Max.: 2,090	I2C	YY-MM-DD-dd	HH:MM:SS:hh (12 hr, 24 hr)	DIP-8	No Backup Switching	1.8 V	5.5 V	- 40 C	+ 85 C	DS1337	Through Hole	Tube
Real Time Clock Watchdog Clocks with NV RAM Control DS1558Y+ Analog Devices / Maxim Integrated 1: £9.79 253In Stock	Mfr. Part No. DS1558Y+ Mouser Part No 700-DS1558Y	Analog Devices / Maxim Integrated	Real Time Clock Watchdog Clocks with NV RAM Control	Datasheet	253In Stock	£9.79 £9.58 £9.54	Min.: 1 Mult.: 1 Max.: 202	Parallel	YY-MM-DD-dd	HH:MM:SS (24 hr)	TQFP-48	Backup Switching	4.5 V	5.5 V	- 40 C	+ 85 C	DS1558Y	SMD/SMT	Tray
Real Time Clock Ultra-Low power 12C Real Time clock w/ p MAX31331TETB+ Analog Devices / Maxim Integrated 1: £2.81 2,764In Stock	Mfr. Part No. MAX31331TETB+ Mouser Part No 700-MAX31331TETB+	Analog Devices / Maxim Integrated	Real Time Clock Ultra-Low power 12C Real Time clock w/ p Learn More about Analog Devices / Maxim Integrated maxim max31331 real time clock	Datasheet	2,764In Stock	£2.81 £2.10 £1.91 £1.72 View £1.62 £1.47 £1.40	Min.: 1 Mult.: 1 Max.: 2,211												Tray
Real Time Clock Serial Alarm Real-Time Clock DS1305N+ Analog Devices / Maxim Integrated 1: £9.73 1,067In Stock	Mfr. Part No. DS1305N+ Mouser Part No 700-DS1305N	Analog Devices / Maxim Integrated	Real Time Clock Serial Alarm Real-Time Clock	Datasheet	1,067In Stock	£9.73 £7.63 £6.95 £6.34 View £6.11 £5.88	Min.: 1 Mult.: 1 Max.: 853	Serial 3-Wire, SPI	YY-MM-DD	HH:MM:SS (24 hr)	DIP-16	Backup Switching	2 V	5.5 V	- 40 C	+ 85 C	DS1305N	Through Hole	Tube
Real Time Clock Y2K-Compliant Watchdog Real-Time Clocks DS1501YN+ Analog Devices / Maxim Integrated 1: £10.33 162In Stock	Mfr. Part No. DS1501YN+ Mouser Part No 700-DS1501YN	Analog Devices / Maxim Integrated	Real Time Clock Y2K-Compliant Watchdog Real-Time Clocks	Datasheet	162In Stock	£10.33 £10.11 £10.07	Min.: 1 Mult.: 1 Max.: 129	Parallel	YY-MM-DD-dd	HH:MM:SS (24 hr)	PDIP-28	Backup Switching	4.5 V	5.5 V	- 40 C	+ 85 C	DS1501YN	Through Hole	Tube
Real Time Clock I C 32-Bit Binary Counter RTC DS1672S-3+T&R Analog Devices / Maxim Integrated 1: £2.38 1,880In Stock	Mfr. Part No. DS1672S-3+T&R Mouser Part No 700-DS1672S-3T&R	Analog Devices / Maxim Integrated	Real Time Clock I C 32-Bit Binary Counter RTC	Datasheet	1,880In Stock	Cut Tape £2.38 £2.33 £2.33 MouseReel Available	Min.: 1 Mult.: 1 Max.: 1,584	Serial 2-Wire, I2C	Binary	Binary	SOIC-8	Backup Switching	2.7 V	3.3 V	- 40 C	+ 85 C	DS1672S	SMD/SMT	Reel, Cut Tape, MouseReel
Real Time Clock Trickle-Charge Timekeeping Chip DS1302S+T&R Analog Devices / Maxim Integrated 1: £2.51 1,803In Stock	Mfr. Part No. DS1302S+T&R Mouser Part No 700-DS1302ST&R	Analog Devices / Maxim Integrated	Real Time Clock Trickle-Charge Timekeeping Chip Learn More about Analog Devices / Maxim Integrated maxim ds1302 timekeeping chip	Datasheet	1,803In Stock	Cut Tape £2.51 £2.46 £2.45 £2.45 MouseReel Available	Min.: 1 Mult.: 1 Max.: 1,442	Serial 3-Wire	YY-MM-DD-dd	HH:MM:SS (24 hr)	SOIC-8	Backup Switching	2 V	5.5 V	0 C	+ 70 C	DS1302S	SMD/SMT	Reel, Cut Tape, MouseReel
Real Time Clock Low-Current I C RTC with 56-Byte NV RAM DS1308U-33+T Analog Devices / Maxim Integrated 1: £4.85 2,262In Stock	Mfr. Part No. DS1308U-33+T Mouser Part No 700-DS1308U-33+T	Analog Devices / Maxim Integrated	Real Time Clock Low-Current I C RTC with 56-Byte NV RAM Learn More about Analog Devices / Maxim Integrated maxim ds1308	Datasheet	2,262In Stock	Cut Tape £4.85 £3.71 £3.43 £3.12 View £2.98 £2.88 £2.85 £2.85 MouseReel Available	Min.: 1 Mult.: 1 Max.: 1,809	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	DS1308U	SMD/SMT	Reel, Cut Tape, MouseReel
Real Time Clock I C RTC with Trickle Charger DS1340U-3+T&R Analog Devices / Maxim Integrated 1: £2.82 1,516In Stock	Mfr. Part No. DS1340U-3+T&R Mouser Part No 700-DS1340U-3T&R	Analog Devices / Maxim Integrated	Real Time Clock I C RTC with Trickle Charger Learn More about Analog Devices / Maxim Integrated maximds1343	Datasheet	1,516In Stock	Cut Tape £2.82 £2.76 £2.76 MouseReel Available	Min.: 1 Mult.: 1 Max.: 1,212	Serial 2-Wire, I2C	YY-MM-DD-dd	HH:MM:SS (24 hr)	uSOP-8	Backup Switching	2.7 V	3.3 V	- 40 C	+ 85 C	DS1340U	SMD/SMT	Reel, Cut Tape, MouseReel
Real Time Clock Low-Current I C RTCs for High-ESR Crystals DS1341U+T&R Analog Devices / Maxim Integrated 1: £3.85 2,859In Stock	Mfr. Part No. DS1341U+T&R Mouser Part No 700-DS1341U+T&R	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	2,859In Stock	Cut Tape £3.85 £2.90 £2.66 £2.41 View £2.28 £2.27 £2.26 £2.26 MouseReel Available	Min.: 1 Mult.: 1 Max.: 2,287	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	DS1341U	SMD/SMT	Reel, Cut Tape, MouseReel
Real Time Clock 256k Nonvolatile, Y2K-Compliant Timekeep DS1554-70IND+ Analog Devices / Maxim Integrated 1: £31.10 173In Stock	Mfr. Part No. DS1554-70IND+ Mouser Part No 700-DS1554-70IND	Analog Devices / Maxim Integrated	Real Time Clock 256k Nonvolatile, Y2K-Compliant Timekeep	Datasheet	173In Stock	£31.10 £30.42 £30.33	Min.: 1 Mult.: 1 Max.: 138	Parallel	YY-MM-DD-dd	HH:MM:SS (24 hr)	EDIP-32	Integrated Battery	4.5 V	5.5 V	- 40 C	+ 85 C	DS1554	Through Hole	Tube
Real Time Clock 1M, Nonvolatile, Y2K-Compliant Timekeepi DS1556WP-120IND+ Analog Devices / Maxim Integrated 1: £40.38 38In Stock	Mfr. Part No. DS1556WP-120IND+ Mouser Part No 700-DS1556WP-120IND	Analog Devices / Maxim Integrated	Real Time Clock 1M, Nonvolatile, Y2K-Compliant Timekeepi	Datasheet	38In Stock	£40.38 £39.49 £39.35	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	- 40 C	+ 85 C	DS1556WP	SMD/SMT	Tray
Real Time Clock 32.768kHz SPI Time Acc. 6ppm RV-3149-C3 32.768kHz OPTION A TA QC Micro Crystal 1: £4.09 354In Stock	Mfr. Part No. RV-3149-C3 32.768kHz OPTION A TA QC Mouser Part No 428-203658-MG01	Micro Crystal	Real Time Clock 32.768kHz SPI Time Acc. 6ppm Learn More about Micro Crystal real time clock modules	Datasheet	354In Stock	Cut Tape £4.09 £3.07 £2.83 £2.55 Reel £2.32 View £2.43 £2.40 £2.29 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	+ 85 C	RV-3149	SMD/SMT	Reel, Cut Tape, MouseReel
Real Time Clock Real-time Clock IC PT7C4337AWEX Diodes Incorporated 1: £0.917 327In Stock	Mfr. Part No. PT7C4337AWEX Mouser Part No 729-PT7C4337AWEX	Diodes Incorporated	Real Time Clock Real-time Clock IC Learn More about Diodes Incorporated diodes timing solutions	Datasheet	327In Stock	Cut Tape £0.917 £0.661 £0.598 £0.528 View Reel £0.48 £0.496 £0.481 £0.48 MouseReel Available	Min.: 1 Mult.: 1 : 2,500	Serial 2-Wire, I2C	YY-MM-DD-dd	HH:MM:SS:hh (12 hr, 24 hr)		No Backup Switching	1.2 V	5.5 V	- 40 C	+ 85 C		SMD/SMT	Reel, Cut Tape, MouseReel
Real Time Clock RV-8803-C7, Real-Time Clock, I C-bus, 3ppm @ -40 to +85C (SMD 3.2 x 1.5 x 0.8) RV-8803-C7-TA-QC Micro Crystal 1: £3.09 83In Stock 3,000On Order	Mfr. Part No. RV-8803-C7-TA-QC Mouser Part No 428-RV-8803-C7-TA-QC	Micro Crystal	Real Time Clock RV-8803-C7, Real-Time Clock, I C-bus, 3ppm @ -40 to +85C (SMD 3.2 x 1.5 x 0.8)	Datasheet	83In Stock 3,000On Order On Order Ship Dates Mfr. No: RV-8803-C7-TA-QC Stock: 83 Can Dispatch Immediately On Order: 1,000 Expected 16/04/2027 2,000 Expected 27/09/2027 Factory Lead Time: 45 Weeks	Cut Tape £3.09 £2.30 £2.10 £1.89 £1.84 Reel £1.55	Min.: 1 Mult.: 1 : 1,000										RV-8803-C7	SMD/SMT	Reel, Cut Tape