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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 Serial Alarm Real-Time Clock DS1305+ Analog Devices / Maxim Integrated 1: $12.12 647In Stock	Mfr. Part No. DS1305+ Mouser Part No 700-DS1305	Analog Devices / Maxim Integrated	Real Time Clock Serial Alarm Real-Time Clock	Datasheet	647In Stock	$12.12 $9.58 $8.13 $8.11 View $8.03 $7.55	Min.: 1 Mult.: 1 Max.: 517	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	DS1305	Through Hole	Tube
Real Time Clock Serial Alarm Real-Time Clock DS1305EN+ Analog Devices / Maxim Integrated 1: $10.59 1,835In Stock	Mfr. Part No. DS1305EN+ Mouser Part No 700-DS1305EN	Analog Devices / Maxim Integrated	Real Time Clock Serial Alarm Real-Time Clock	Datasheet	1,835In Stock	$10.59 $8.27 $7.32 $7.04 View $6.68 $6.55 $6.40	Min.: 1 Mult.: 1 Max.: 1,468	Serial 3-Wire, SPI	YY-MM-DD	HH:MM:SS (24 hr)	TSSOP-20	Backup Switching	2 V	5.5 V	- 40 C	+ 85 C	DS1305EN	SMD/SMT	Tube
Real Time Clock Serial Alarm Real-Time Clock DS1305EN+T&R Analog Devices / Maxim Integrated 1: $9.98 795In Stock	Mfr. Part No. DS1305EN+T&R Mouser Part No 700-DS1305ENT&R	Analog Devices / Maxim Integrated	Real Time Clock Serial Alarm Real-Time Clock	Datasheet	795In Stock	Cut Tape $9.98 $8.27 $7.69 $7.05 View $6.69 $6.56 $6.56 MouseReel Available	Min.: 1 Mult.: 1 Max.: 636	Serial 3-Wire, SPI	YY-MM-DD	HH:MM:SS (24 hr)	TSSOP-20	Backup Switching	2 V	5.5 V	- 40 C	+ 85 C	DS1305EN	SMD/SMT	Reel, Cut Tape, MouseReel
Real Time Clock Serial Alarm Real-Time Clock DS1306E+ Analog Devices / Maxim Integrated 1: $7.86 1,812In Stock	Mfr. Part No. DS1306E+ Mouser Part No 700-DS1306E	Analog Devices / Maxim Integrated	Real Time Clock Serial Alarm Real-Time Clock	Datasheet	1,812In Stock	$7.86 $6.90 $6.40 $5.84 View $5.57 $5.42 $5.27	Min.: 1 Mult.: 1 Max.: 1,449	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	DS1306E	SMD/SMT	Tube
Real Time Clock Serial Alarm Real-Time Clock DS1306EN+ Analog Devices / Maxim Integrated 1: $9.69 635In Stock	Mfr. Part No. DS1306EN+ Mouser Part No 700-DS1306EN	Analog Devices / Maxim Integrated	Real Time Clock Serial Alarm Real-Time Clock	Datasheet	635In Stock	$9.69 $7.50 $6.87 $6.35 $6.07	Min.: 1 Mult.: 1 Max.: 508	Serial 3-Wire, SPI	YY-MM-DD	HH:MM:SS (24 hr)	TSSOP-20	Backup Switching	2 V	5.5 V	- 40 C	+ 85 C	DS1306EN	SMD/SMT	Tube
Real Time Clock Serial Alarm Real-Time Clock DS1306EN+T&R Analog Devices / Maxim Integrated 1: $9.54 1,910In Stock	Mfr. Part No. DS1306EN+T&R Mouser Part No 700-DS1306ENT&R	Analog Devices / Maxim Integrated	Real Time Clock Serial Alarm Real-Time Clock	Datasheet	1,910In Stock	Cut Tape $9.54 $7.42 $6.78 $6.25 $6.10 $6.10 MouseReel Available	Min.: 1 Mult.: 1 Max.: 1,528	Serial 3-Wire, SPI	YY-MM-DD	HH:MM:SS (24 hr)	TSSOP-20	Backup Switching	2 V	5.5 V	- 40 C	+ 85 C	DS1306EN	SMD/SMT	Reel, Cut Tape, MouseReel
Real Time Clock 64 x 8, Serial, I C Real-Time Clock DS1307+ Analog Devices / Maxim Integrated 1: $6.94 691In Stock	Mfr. Part No. DS1307+ Mouser Part No 700-DS1307	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	691In Stock	$6.94 $5.32 $4.92 $4.48 View $4.26 $4.13	Min.: 1 Mult.: 1 Max.: 552	I2C	YY-MM-DD	HH:MM:SS:hh (12 hr, 24 hr)	PDIP-8	Backup Switching	4.5 V	5.5 V	0 C	+ 70 C	DS1307	Through Hole	Tube
Real Time Clock 64 x 8, Serial, I C Real-Time Clock DS1307Z+ Analog Devices / Maxim Integrated 1: $5.70 2,300In Stock	Mfr. Part No. DS1307Z+ Mouser Part No 700-DS1307Z	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	2,300In Stock	$5.70 $4.35 $4.02 $3.63 View $3.44 $3.34 $3.28	Min.: 1 Mult.: 1 Max.: 1,840	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	Tube
Real Time Clock 64 x 8, Serial, I C Real-Time Clock DS1307ZN+ Analog Devices / Maxim Integrated 1: $6.40 427In Stock	Mfr. Part No. DS1307ZN+ Mouser Part No 700-DS1307ZN	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	427In Stock	$6.40 $4.90 $4.53 $3.84	Min.: 1 Mult.: 1 Max.: 341	I2C	YY-MM-DD	HH:MM:SS:hh (12 hr, 24 hr)	SOIC-8	Backup Switching	4.5 V	5.5 V	- 40 C	+ 85 C	DS1307ZN	SMD/SMT	Tube
Real Time Clock Low-Current I C RTC with 56-Byte NV RAM DS1308U-18+T Analog Devices / Maxim Integrated 1: $6.21 439In Stock	Mfr. Part No. DS1308U-18+T Mouser Part No 700-DS1308U-18+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	439In Stock	Cut Tape $6.21 $4.76 $4.40 $4.00 $3.81 $3.81 MouseReel Available	Min.: 1 Mult.: 1 Max.: 351	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	DS1308U	SMD/SMT	Reel, Cut Tape, MouseReel
Real Time Clock Phantom Time Chip DS1315E-5+ Analog Devices / Maxim Integrated 1: $37.85 16In Stock	Mfr. Part No. DS1315E-5+ Mouser Part No 700-DS1315E-5	Analog Devices / Maxim Integrated	Real Time Clock Phantom Time Chip	Datasheet	16In Stock	$37.85 $30.64 $28.84 $27.64 View $25.91 Quote	Min.: 1 Mult.: 1	Phantom Clock	YY-MM-DD-dd	HH:MM:SS:hh (12 hr, 24 hr)	TSSOP-20	Backup Switching	4.5 V	5.5 V	0 C	+ 70 C	DS1315E	SMD/SMT	Tube
Real Time Clock Phantom Time Chip DS1315S-5+ Analog Devices / Maxim Integrated 1: $37.66 96In Stock	Mfr. Part No. DS1315S-5+ Mouser Part No 700-DS1315S-5	Analog Devices / Maxim Integrated	Real Time Clock Phantom Time Chip	Datasheet	96In Stock	$37.66 $30.49 $28.26 $26.57 View $25.45 Quote	Min.: 1 Mult.: 1	Phantom Clock	YY-MM-DD-dd	HH:MM:SS:hh (12 hr, 24 hr)	SO-16	Backup Switching	4.5 V	5.5 V	0 C	+ 70 C	DS1315S	SMD/SMT	Tube
Real Time Clock I C Serial Real-Time Clock DS1337C# Analog Devices / Maxim Integrated 1: $10.37 96In Stock	Mfr. Part No. DS1337C# Mouser Part No 700-DS1337C#	Analog Devices / Maxim Integrated	Real Time Clock I C Serial Real-Time Clock	Datasheet	96In Stock	$10.37 $8.07 $7.49 $6.85 View $6.33 $6.19 $6.01 Quote	Min.: 1 Mult.: 1	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	Tube
Real Time Clock I C Serial Real-Time Clock DS1337U+T&R Analog Devices / Maxim Integrated 1: $5.02 974In Stock	Mfr. Part No. DS1337U+T&R Mouser Part No 700-DS1337UT&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	974In Stock	Cut Tape $5.02 $3.79 $3.48 $3.14 View $2.98 $2.96 $2.96 MouseReel Available	Min.: 1 Mult.: 1 Max.: 779	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	DS1337U	SMD/SMT	Reel, Cut Tape, MouseReel
Real Time Clock I C RTC with 56-Byte NV RAM DS1338C-3# Analog Devices / Maxim Integrated 1: $11.89 51In Stock	Mfr. Part No. DS1338C-3# Mouser Part No 700-DS1338C-3#-	Analog Devices / Maxim Integrated	Real Time Clock I C RTC with 56-Byte NV RAM	Datasheet	51In Stock	$11.89 $9.28 $8.63 $7.91 View $7.51 $7.36 $7.18 Quote	Min.: 1 Mult.: 1	Serial 2-Wire, I2C	YY-MM-DD-dd	HH:MM:SS:hh (12 hr, 24 hr)	SO-16	Backup Switching	2.7 V	3.3 V	- 40 C	+ 85 C	DS1338C	SMD/SMT	Tube
Real Time Clock I C RTC with 56-Byte NV RAM DS1338C-33# Analog Devices / Maxim Integrated 1: $6.90 766In Stock	Mfr. Part No. DS1338C-33# Mouser Part No 700-DS1338C-33#	Analog Devices / Maxim Integrated	Real Time Clock I C RTC with 56-Byte NV RAM	Datasheet	766In Stock	$6.90 $6.75 $6.60 $6.47 View $6.37 $6.27	Min.: 1 Mult.: 1 Max.: 612	Serial 2-Wire, 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	Tube
Real Time Clock I C RTC with 56-Byte NV RAM DS1338U-33+T&R Analog Devices / Maxim Integrated 1: $6.48 2,626In Stock	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	Datasheet	2,626In Stock	Cut Tape $6.48 $4.96 $4.59 $4.17 View $3.97 $3.90 $3.88 $3.88 MouseReel Available	Min.: 1 Mult.: 1 Max.: 2,100	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: $6.64 2,114In Stock	Mfr. Part No. DS1338Z-18+ Mouser Part No 700-DS1338Z-18	Analog Devices / Maxim Integrated	Real Time Clock I C RTC with 56-Byte NV RAM	Datasheet	2,114In Stock	$6.64 $5.09 $4.70 $3.99 View $3.94 $3.90	Min.: 1 Mult.: 1 Max.: 1,691	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 I C RTC with 56-Byte NV RAM DS1338Z-33+T&R Analog Devices / Maxim Integrated 1: $6.64 479In 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	479In Stock	Cut Tape $6.64 $5.09 $4.70 $4.28 $4.19 $4.19 MouseReel Available	Min.: 1 Mult.: 1 Max.: 383	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 I C RTC with 56-Byte NV RAM DS1338Z-3+T&R Analog Devices / Maxim Integrated 1: $6.63 857In Stock	Mfr. Part No. DS1338Z-3+T&R Mouser Part No 700-DS1338Z-3T&R	Analog Devices / Maxim Integrated	Real Time Clock I C RTC with 56-Byte NV RAM	Datasheet	857In Stock	Cut Tape $6.63 $5.08 $4.69 $4.27 View $4.06 $3.94 $3.94 MouseReel Available	Min.: 1 Mult.: 1 Max.: 685	Serial 2-Wire, I2C		HH:MM:SS (24 hr)	SOIC-8		2.7 V	3.3 V	- 40 C	+ 85 C	DS1338Z	SMD/SMT	Reel, Cut Tape, MouseReel
Real Time Clock I C Serial Real-Time Clock DS1339C-33# Analog Devices / Maxim Integrated 1: $13.18 378In Stock	Mfr. Part No. DS1339C-33# Mouser Part No 700-DS1339C-33#	Analog Devices / Maxim Integrated	Real Time Clock I C Serial Real-Time Clock	Datasheet	378In Stock	$13.18 $10.32 $9.61 $8.82 $8.73	Min.: 1 Mult.: 1 Max.: 302	Serial 2-Wire, I2C	YY-MM-DD-dd	HH:MM:SS:hh (12 hr, 24 hr)	SO-16	Backup Switching	2.97 V	5.5 V	- 40 C	+ 85 C	DS1339C	SMD/SMT	Tube
Real Time Clock I C Serial Real-Time Clock DS1339U-33+ Analog Devices / Maxim Integrated 1: $7.04 816In Stock	Mfr. Part No. DS1339U-33+ Mouser Part No 700-DS1339U-33	Analog Devices / Maxim Integrated	Real Time Clock I C Serial Real-Time Clock Learn More about Analog Devices / Maxim Integrated maxim hvac solutions	Datasheet	816In Stock	$7.04 $5.40 $4.58 $4.53 View $4.31 $4.18	Min.: 1 Mult.: 1 Max.: 652	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	Tube
Real Time Clock I C RTC with Trickle Charger DS1340C-18# Analog Devices / Maxim Integrated 1: $12.44 64In Stock	Mfr. Part No. DS1340C-18# Mouser Part No 700-DS1340C-18#-	Analog Devices / Maxim Integrated	Real Time Clock I C RTC with Trickle Charger	Datasheet	64In Stock	$12.44 $9.73 $8.88 $8.24 View $7.90 $7.73 $7.55 Quote	Min.: 1 Mult.: 1	Serial 2-Wire, I2C	YY-MM-DD-dd	HH:MM:SS (24 hr)	SO-16	Backup Switching	1.71 V	1.89 V	- 40 C	+ 85 C	DS1340C	SMD/SMT	Tube
Real Time Clock I C RTC with Trickle Charger DS1340C-33#T&R Analog Devices / Maxim Integrated 1: $11.31 745In Stock	Mfr. Part No. DS1340C-33#T&R Mouser Part No 700-DS1340C-33#T&R-	Analog Devices / Maxim Integrated	Real Time Clock I C RTC with Trickle Charger Learn More about Analog Devices / Maxim Integrated maximds1343	Datasheet	745In Stock	Cut Tape $11.31 $8.84 $8.22 $7.53 View $7.22 $7.14 $7.14 MouseReel Available	Min.: 1 Mult.: 1 Max.: 596	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	Reel, Cut Tape, MouseReel
Real Time Clock I C RTC with Trickle Charger DS1340Z-3+ Analog Devices / Maxim Integrated 1: $6.46 944In Stock	Mfr. Part No. DS1340Z-3+ Mouser Part No 700-DS1340Z-3	Analog Devices / Maxim Integrated	Real Time Clock I C RTC with Trickle Charger Learn More about Analog Devices / Maxim Integrated maximds1343	Datasheet	944In Stock	$6.46 $4.95 $4.58 $4.15 View $3.96 $3.84	Min.: 1 Mult.: 1 Max.: 755	Serial 2-Wire, I2C	YY-MM-DD-dd	HH:MM:SS (24 hr)	SO-8	Backup Switching	2.7 V	3.3 V	- 40 C	+ 85 C	DS1340Z	SMD/SMT	Tube