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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 (USD) 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 I C RTC with 56-Byte NV RAM DS1338U-33+T&R Analog Devices / Maxim Integrated Restricted Availability	Mfr. Part No. DS1338U-33+T&R Mouser Part No 700-DS1338U-33T&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	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-33+T&R Analog Devices / Maxim Integrated 1: $6.64 179In Stock	Mfr. Part No. DS1338Z-33+T&R Mouser Part No 700-DS1338Z-33T&R	Analog Devices / Maxim Integrated	Real Time Clock I C RTC with 56-Byte NV RAM	Datasheet	179In Stock	Cut Tape $6.64 $5.09 $4.70 $4.28 $4.19 $3.59 MouseReel Available	Min.: 1 Mult.: 1	Serial 2-Wire, I2C	YY-MM-DD-dd	HH:MM:SS:hh (12 hr, 24 hr)	SOIC-8	Backup Switching	3 V	5.5 V	- 40 C	+ 85 C	DS1338Z	SMD/SMT	Reel, Cut Tape, MouseReel
Real Time Clock Low-Current, I C, Serial Real-Time Clock DS1339AU+ Analog Devices / Maxim Integrated Restricted Availability	Mfr. Part No. DS1339AU+ Mouser Part No 700-DS1339AU+	Analog Devices / Maxim Integrated	Real Time Clock Low-Current, I C, Serial Real-Time Clock Learn More about Analog Devices / Maxim Integrated maxim hvac solutions Mouser does not presently sell this product in your region.	Datasheet			Restricted Availability	Serial 2-Wire, I2C	YY-MM-DD-dd	HH:MM:SS:hh (12 hr, 24 hr)	uSOP-8	Backup Switching	1.71 V	5.5 V	- 40 C	+ 85 C	DS1339AU	SMD/SMT	Tube
Real Time Clock SERIAL RTC 1.8-3.3V HESR USOP DS1339BU+ Analog Devices / Maxim Integrated 1: $7.39 25In Stock	Mfr. Part No. DS1339BU+ Mouser Part No 700-DS1339BU+	Analog Devices / Maxim Integrated	Real Time Clock SERIAL RTC 1.8-3.3V HESR USOP Learn More about Analog Devices / Maxim Integrated maxim hvac solutions	Datasheet	25In Stock	$7.39 $5.70 $4.84 $4.80 View $4.45 $4.25 $4.11 $3.96	Min.: 1 Mult.: 1	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	DS1339BU	SMD/SMT	Tube
Real Time Clock I C Serial Real-Time Clock DS1339U-2+ Analog Devices / Maxim Integrated 1: $7.05 290In Stock	Mfr. Part No. DS1339U-2+ Mouser Part No 700-DS1339U-2	Analog Devices / Maxim Integrated	Real Time Clock I C Serial Real-Time Clock Learn More about Analog Devices / Maxim Integrated maxim hvac solutions	Datasheet	290In Stock	$7.05 $5.34 $4.82 $4.45 View $4.23 $4.09 $4.00 $3.99 Quote	Min.: 1 Mult.: 1	Serial 2-Wire, I2C	YY-MM-DD-dd	HH:MM:SS:hh (12 hr, 24 hr)	uSOP-8	Backup Switching	1.8 V	2.2 V	- 40 C	+ 85 C	DS1339U	SMD/SMT	Tube
Real Time Clock I C Serial Real-Time Clock DS1339U-33+T&R Analog Devices / Maxim Integrated 1: $7.04 336In Stock	Mfr. Part No. DS1339U-33+T&R Mouser Part No 700-DS1339U-33T&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	336In Stock	Cut Tape $7.04 $5.40 $4.99 $4.54 View $4.32 $4.19 $4.14 $4.08 MouseReel Available	Min.: 1 Mult.: 1	Serial 2-Wire, I2C	YY-MM-DD-dd	HH:MM:SS:hh (12 hr, 24 hr)	uSOP-8	Backup Switching	2.97 V	5.5 V	- 40 C	+ 85 C	DS1339U	SMD/SMT	Reel, Cut Tape, MouseReel
Real Time Clock I C RTC with Trickle Charger DS1340C-33# Analog Devices / Maxim Integrated 1: $11.94 175In Stock	Mfr. Part No. DS1340C-33# Mouser Part No 700-DS1340C-33#	Analog Devices / Maxim Integrated	Real Time Clock I C RTC with Trickle Charger	Datasheet	175In Stock	$11.94 $9.35 $8.70 $7.98 View $7.91 $7.44 $7.27 Quote	Min.: 1 Mult.: 1	Serial 2-Wire, I2C	YY-MM-DD-dd	HH:MM:SS (24 hr)	SO-16	Backup Switching	2.97 V	5.5 V	- 40 C	+ 85 C	DS1340C	SMD/SMT	Tube
Real Time Clock I C RTC with Trickle Charger DS1340U-33+ Analog Devices / Maxim Integrated 1: $6.64 13In Stock	Mfr. Part No. DS1340U-33+ Mouser Part No 700-DS1340U-33	Analog Devices / Maxim Integrated	Real Time Clock I C RTC with Trickle Charger Learn More about Analog Devices / Maxim Integrated maximds1343	Datasheet	13In Stock	$6.64 $5.09 $4.66 $4.27 View $4.06 $3.94 $3.90 $3.85	Min.: 1 Mult.: 1	I2C	YY-MM-DD-dd	HH:MM:SS (24 hr)	uSOP-8	Backup Switching	2.97 V	5.5 V	- 40 C	+ 85 C	DS1340U	SMD/SMT	Tube
Real Time Clock Low-Current I C RTCs for High-ESR Crystals DS1341U+ Analog Devices / Maxim Integrated 1: $5.13 121In Stock	Mfr. Part No. DS1341U+ Mouser Part No 700-DS1341U	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	121In Stock	$5.13 $3.86 $3.28 $3.20 View $3.03 $2.99 $2.81 $2.73	Min.: 1 Mult.: 1	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	Tube
Real Time Clock Low-Current SPI/3-Wire RTCs DS1343E-3+ Analog Devices / Maxim Integrated 1: $4.54 17In Stock	Mfr. Part No. DS1343E-3+ Mouser Part No 700-DS1343E-3+	Analog Devices / Maxim Integrated	Real Time Clock Low-Current SPI/3-Wire RTCs Learn More about Analog Devices / Maxim Integrated maximds1343	Datasheet	17In Stock	$4.54 $4.44 $4.34 $4.25 View $4.19 $4.13 $4.06 $4.00	Min.: 1 Mult.: 1	Serial 3-Wire, SPI	YY-MM-DD-dd	HH:MM:SS:hh (12 hr, 24 hr)	TSSOP-20	Backup Switching	2.7 V	5.5 V	- 40 C	+ 85 C	DS1343E	SMD/SMT	Tube
Real Time Clock Low-Current SPI/3-Wire RTCs DS1344E-33+ Analog Devices / Maxim Integrated 1: $8.24 49In Stock	Mfr. Part No. DS1344E-33+ Mouser Part No 700-DS1344E-33+	Analog Devices / Maxim Integrated	Real Time Clock Low-Current SPI/3-Wire RTCs Learn More about Analog Devices / Maxim Integrated maximds1343	Datasheet	49In Stock	$8.24 $6.35 $5.88 $5.36 View $4.96 $4.80 $4.57	Min.: 1 Mult.: 1	Serial 3-Wire, SPI	YY-MM-DD-dd	HH:MM:SS:hh (12 hr, 24 hr)	TSSOP-20	Backup Switching	3 V	5.5 V	- 40 C	+ 85 C	DS1344E	SMD/SMT	Tube
Real Time Clock I C, 32-Bit, Binary Counter Clock with 64-Bit ID DS1372U+ Analog Devices / Maxim Integrated 1: $5.12 112In Stock	Mfr. Part No. DS1372U+ Mouser Part No 700-DS1372U	Analog Devices / Maxim Integrated	Real Time Clock I C, 32-Bit, Binary Counter Clock with 64-Bit ID	Datasheet	112In Stock	$5.12 $3.90 $3.31 $3.25 View $3.09 $2.99 $2.93 $2.87	Min.: 1 Mult.: 1	I2C	Binary	Binary	uSOP-8	No Backup Switching	2.4 V	5.5 V	- 40 C	+ 85 C	DS1372U+	SMD/SMT	Tube
Real Time Clock I C, 32-Bit Binary Counter Watchdog RTC with Trickle Charger and Reset Input/Output DS1374U-3+ Analog Devices / Maxim Integrated 1: $6.48 91In Stock	Mfr. Part No. DS1374U-3+ Mouser Part No 700-DS1374U-3	Analog Devices / Maxim Integrated	Real Time Clock I C, 32-Bit Binary Counter Watchdog RTC with Trickle Charger and Reset Input/Output	Datasheet	91In Stock	$6.48 $4.96 $4.47 $4.24 View $4.00 $3.89 $3.82 $3.73	Min.: 1 Mult.: 1	I2C	Binary	Binary	uSOP-10	Backup Switching	2.7 V	3.3 V	- 40 C	+ 85 C	DS1374U	SMD/SMT	Tube
Real Time Clock I C, 32-Bit Binary Counter Watchdog RTC with Trickle Charger and Reset Input/Output DS1374U-33+ Analog Devices / Maxim Integrated 1: $6.64 4In Stock	Mfr. Part No. DS1374U-33+ Mouser Part No 700-DS1374U-33	Analog Devices / Maxim Integrated	Real Time Clock I C, 32-Bit Binary Counter Watchdog RTC with Trickle Charger and Reset Input/Output	Datasheet	4In Stock	$6.64 $5.09 $4.32 $4.27 View $4.06 $3.94 $3.90 $3.85	Min.: 1 Mult.: 1	I2C	Binary	Binary	uSOP-10	Backup Switching	2.97 V	5.5 V	- 40 C	+ 85 C	DS1374U	SMD/SMT	Tube
Real Time Clock I C, 32-Bit Binary Counter Watchdog RTC with Trickle Charger and Reset Input/Output DS1374U-33+T&R Analog Devices / Maxim Integrated 1: $6.18 301In Stock	Mfr. Part No. DS1374U-33+T&R Mouser Part No 700-DS1374U-33T&R	Analog Devices / Maxim Integrated	Real Time Clock I C, 32-Bit Binary Counter Watchdog RTC with Trickle Charger and Reset Input/Output	Datasheet	301In Stock	Cut Tape $6.18 $4.71 $4.70 $4.28 $4.19 $3.59 MouseReel Available	Min.: 1 Mult.: 1	Serial 2-Wire, I2C	Binary	Binary	uSOP-10	Backup Switching	2.97 V	5.5 V	- 40 C	+ 85 C	DS1374U	SMD/SMT	Reel, Cut Tape, MouseReel
Real Time Clock Low-Voltage SPI/3-Wire RTCs with Trickle DS1390U-33+ Analog Devices / Maxim Integrated 1: $6.64 22In Stock	Mfr. Part No. DS1390U-33+ Mouser Part No 700-DS1390U-33	Analog Devices / Maxim Integrated	Real Time Clock Low-Voltage SPI/3-Wire RTCs with Trickle	Datasheet	22In Stock	$6.64 $5.09 $4.32 $4.27 View $4.06 $3.94 $3.90 $3.85	Min.: 1 Mult.: 1	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	DS1390U	SMD/SMT	Tube
Real Time Clock Low-Voltage SPI/3-Wire RTCs with Trickle DS1391U-3+ Analog Devices / Maxim Integrated 1: $6.64 40In Stock	Mfr. Part No. DS1391U-3+ Mouser Part No 700-DS1391U-3	Analog Devices / Maxim Integrated	Real Time Clock Low-Voltage SPI/3-Wire RTCs with Trickle	Datasheet	40In Stock	$6.64 $5.09 $4.32 $4.27 View $4.06 $3.94 $3.90 $3.85	Min.: 1 Mult.: 1	SPI	YY-MM-DD-dd	HH:MM:SS:hh (12 hr, 24 hr)	uSOP-10	Backup Switching	2.7 V	3.3 V	- 40 C	+ 85 C	DS1391U	SMD/SMT	Tube
Real Time Clock Low-Voltage SPI/3-Wire RTCs with Trickle DS1391U-33+ Analog Devices / Maxim Integrated 1: $6.64 201In Stock	Mfr. Part No. DS1391U-33+ Mouser Part No 700-DS1391U-33	Analog Devices / Maxim Integrated	Real Time Clock Low-Voltage SPI/3-Wire RTCs with Trickle	Datasheet	201In Stock	$6.64 $5.09 $4.32 $4.27 View $4.06 $3.94 $3.90 $3.85	Min.: 1 Mult.: 1	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	DS1391U	SMD/SMT	Tube
Real Time Clock Low-Voltage SPI/3-Wire RTCs with Trickle DS1393U-33+ Analog Devices / Maxim Integrated 1: $7.68 43In Stock	Mfr. Part No. DS1393U-33+ Mouser Part No 700-DS1393U-33	Analog Devices / Maxim Integrated	Real Time Clock Low-Voltage SPI/3-Wire RTCs with Trickle	Datasheet	43In Stock	$7.68 $5.92 $5.03 $4.99 View $4.62 $4.48 $4.26	Min.: 1 Mult.: 1	Serial 3-Wire	YY-MM-DD-dd	HH:MM:SS:hh (12 hr, 24 hr)		Backup Switching	2.97 V	5.5 V	- 40 C	+ 85 C	DS1393U	SMD/SMT	Tube
Real Time Clock Y2K-Compliant Watchdog Real-Time Clocks DS1501WZN+ Analog Devices / Maxim Integrated 1: $22.28 5In Stock	Mfr. Part No. DS1501WZN+ Mouser Part No 700-DS1501WZN	Analog Devices / Maxim Integrated	Real Time Clock Y2K-Compliant Watchdog Real-Time Clocks	Datasheet	5In Stock	$22.28 $17.66 $16.60 $15.23 $14.58	Min.: 1 Mult.: 1	Parallel	YY-MM-DD-dd	HH:MM:SS (24 hr)	SO-28	Backup Switching	3 V	3.6 V	- 40 C	+ 85 C	DS1501WZN+	SMD/SMT	Tube
Real Time Clock Y2K-Compliant Watchdog Real-Time Clocks DS1501YZ+ Analog Devices / Maxim Integrated 1: $20.02 6In Stock	Mfr. Part No. DS1501YZ+ Mouser Part No 700-DS1501YZ	Analog Devices / Maxim Integrated	Real Time Clock Y2K-Compliant Watchdog Real-Time Clocks	Datasheet	6In Stock	$20.02 $16.24 $13.79 $13.50 View $12.90 $12.63 Quote	Min.: 1 Mult.: 1	Parallel	YY-MM-DD-dd	HH:MM:SS (24 hr)	SO-28	Backup Switching	4.5 V	5.5 V	0 C	+ 70 C	DS1501YZ+	SMD/SMT	Tube
Real Time Clock 256k Nonvolatile, Y2K-Compliant Timekeep DS1554P-70IND+ Analog Devices / Maxim Integrated 1: $60.21 5In Stock	Mfr. Part No. DS1554P-70IND+ Mouser Part No 700-DS1554P-70IND	Analog Devices / Maxim Integrated	Real Time Clock 256k Nonvolatile, Y2K-Compliant Timekeep	Datasheet	5In Stock	$60.21 $49.21 $46.46 $45.16 View $41.98 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	- 40 C	+ 85 C	DS1554P	SMD/SMT	Tray
Real Time Clock 256k Nonvolatile, Y2K-Compliant Timekeep DS1554W-120IND+ Analog Devices / Maxim Integrated 1: $59.35 9In Stock	Mfr. Part No. DS1554W-120IND+ Mouser Part No 700-DS1554W-120IND	Analog Devices / Maxim Integrated	Real Time Clock 256k Nonvolatile, Y2K-Compliant Timekeep	Datasheet	9In Stock	$59.35 $48.60 $45.62 $43.05 View $41.50 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	DS1554W	Through Hole	Tube
Real Time Clock 256k Nonvolatile, Y2K-Compliant Timekeep DS1554WP-120+ Analog Devices / Maxim Integrated 1: $32.19 2In Stock	Mfr. Part No. DS1554WP-120+ Mouser Part No 700-DS1554WP-120	Analog Devices / Maxim Integrated	Real Time Clock 256k Nonvolatile, Y2K-Compliant Timekeep	Datasheet	2In Stock	$32.19 $31.48 $30.80 $30.18 View $29.72 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	DS1554WP	SMD/SMT	Tray
Real Time Clock 256k Nonvolatile, Y2K-Compliant Timekeep DS1554WP-120IND+ Analog Devices / Maxim Integrated 1: $56.61 33In Stock	Mfr. Part No. DS1554WP-120IND+ Mouser Part No 700-DS1554WP-120IND	Analog Devices / Maxim Integrated	Real Time Clock 256k Nonvolatile, Y2K-Compliant Timekeep	Datasheet	33In Stock	$56.61 $46.27 $43.68 $42.46 View $38.32 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	- 40 C	+ 85 C	DS1554WP	SMD/SMT	Tray