.hide-partial { max-height: none; } .show-more { display: none; }

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.
More...

Please view our large selection of real time clocks below.

.catnav-wrapper { height: auto; overflow: visible; } .catalog-nav-tabs ul { white-space: normal; }

Results: 790

Applied Filters:

Manufacturer

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

Qualification

Time Keeping Current

Packaging

Reset All

Search within results

In Stock

Normally Stocked

Active

New Products

RoHS Compliant

.search-refine-wrapper { display: inline-block; min-width: 100%; } .scroll-body { overflow-x: visible; } .search-table-wrapper { overflow: visible; } .hide-partial { max-height: none; } .show-more { display: none; }

Image	Part #	Mfr.	Description	Datasheet	Availability	Pricing (SGD) 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	Qualification	Packaging
Real Time Clock .9RTC BASE 1338-31DCGI8 Renesas Electronics 1: $5.34 5In Stock 6,000Expected 10/1/2028	Mfr. Part No. 1338-31DCGI8 Mouser Part No 972-1338-31DCGI8	Renesas Electronics	Real Time Clock .9RTC BASE	Datasheet	5In Stock 6,000Expected 10/1/2028	Cut Tape $5.34 $3.98 $3.64 $3.28 View Reel $3.05 $3.09 $3.05 $3.05 MouseReel Available	Min.: 1 Mult.: 1 : 3,000	Serial 2-Wire, I2C	YY-MM-DD-dd	HH:MM:SS:hh (12 hr, 24 hr)	SOIC-8	Backup Switching	1.3 V	3.7 V	- 40 C	+ 85 C	1338	SMD/SMT		Reel, Cut Tape, MouseReel
Real Time Clock Automotive tiny Real-Time Clock/calendar with alarm function and I2C-bus PCA85063ATT/AJ NXP Semiconductors 1: $2.43 13In Stock 12,500On Order NRND	Mfr. Part No. PCA85063ATT/AJ Mouser Part No 771-PCA85063ATT/AJ NRND	NXP Semiconductors	Real Time Clock Automotive tiny Real-Time Clock/calendar with alarm function and I2C-bus	Datasheet	13In Stock 12,500On Order On Order Ship Dates Mfr. No: PCA85063ATT/AJ Stock: 13 Can Dispatch Immediately On Order: 5,000 Expected 14/1/2027 7,500 Expected 1/2/2027 Factory Lead Time: 27 Weeks	Cut Tape $2.43 $1.80 $1.58 $1.40 View Reel $1.15 $1.31 $1.26 $1.23 $1.15 MouseReel Available	Min.: 1 Mult.: 1 : 2,500	I2C	YY-MM-DD-dd	HH:MM:SS:hh (12 hr, 24 hr)	TSSOP-8	No Backup Switching	900 mV	5.5 V	- 40 C	+ 105 C	PCA85063A	SMD/SMT	AEC-Q100	Reel, Cut Tape, MouseReel
Real Time Clock Parallel RTC A 595-B Q4802YDWR A 595-BQ4 A 595-BQ4802YDWR BQ4802YDW Texas Instruments 1: $36.84 7In Stock End of Life	Mfr. Part No. BQ4802YDW Mouser Part No 595-BQ4802YDW End of Life	Texas Instruments	Real Time Clock Parallel RTC A 595-B Q4802YDWR A 595-BQ4 A 595-BQ4802YDWR	Datasheet	7In Stock	$36.84 $29.44 $27.59 $25.57 View $24.60 $24.02	Min.: 1 Mult.: 1	Parallel	YY-MM-DD-dd	HH:MM:SS (24 hr)	SOIC-28	Backup Switching	4.5 V	5.5 V	0 C	+ 70 C	BQ4802Y	SMD/SMT		Tube
Real Time Clock 4096k NV SRAM with Phantom Clock DS1251W-120IND+ Analog Devices / Maxim Integrated 1: $121.72 2In Stock	Mfr. Part No. DS1251W-120IND+ Mouser Part No 700-DS1251W-120IND	Analog Devices / Maxim Integrated	Real Time Clock 4096k NV SRAM with Phantom Clock	Datasheet	2In Stock	$121.72 $101.36 $92.21 $87.38 View Quote	Min.: 1 Mult.: 1	Parallel	YY-MM-DD-dd	HH:MM:SS:hh (12 hr, 24 hr)	EDIP-32		2.97 V	3.63 V	- 40 C	+ 85 C	DS1251W	Through Hole		Tube
Real Time Clock Real-Time Clocks DS12887A+ Analog Devices / Maxim Integrated 1: $28.72 51In Stock	Mfr. Part No. DS12887A+ Mouser Part No 700-DS12887A	Analog Devices / Maxim Integrated	Real Time Clock Real-Time Clocks	Datasheet	51In Stock	$28.72 $22.36 $21.30 $19.67 View $18.75 $18.41 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	DS12887A	Through Hole		Tube
Real Time Clock Real-Time Clocks DS12C887A+ Analog Devices / Maxim Integrated 1: $27.83 53In Stock	Mfr. Part No. DS12C887A+ Mouser Part No 700-DS12C887A	Analog Devices / Maxim Integrated	Real Time Clock Real-Time Clocks	Datasheet	53In Stock	$27.83 $22.06 $20.60 $19.01 View $18.13 $17.82 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	DS12C887A	Through Hole		Tube
Real Time Clock RTCs with Constant-Voltage Trickle Charg DS12CR887-33+ Analog Devices / Maxim Integrated 1: $30.45 14In Stock	Mfr. Part No. DS12CR887-33+ Mouser Part No 700-DS12CR887-33	Analog Devices / Maxim Integrated	Real Time Clock RTCs with Constant-Voltage Trickle Charg	Datasheet	14In Stock	$30.45 $24.34 $22.81 $21.13 View $20.33 $19.84	Min.: 1 Mult.: 1	Multiplexed	YY-MM-DD-dd	HH:MM:SS:hh (12 hr, 24 hr)	EDIP-24	Integrated Battery	2.97 V	3.63 V	- 40 C	+ 85 C	DS12CR887	Through Hole		Tube
Real Time Clock RTCs with Constant-Voltage Trickle Charg DS12R885S-5+ Analog Devices / Maxim Integrated 1: $10.81 20In Stock	Mfr. Part No. DS12R885S-5+ Mouser Part No 700-DS12R885S-5	Analog Devices / Maxim Integrated	Real Time Clock RTCs with Constant-Voltage Trickle Charg	Datasheet	20In Stock	$10.81 $8.34 $7.72 $6.87 View $6.46 $6.38 $6.22 $5.97 Quote	Min.: 1 Mult.: 1	Multiplexed	YY-MM-DD-dd	HH:MM:SS:hh (12 hr, 24 hr)	SO-24	Backup Switching	4.5 V	5.5 V	- 40 C	+ 85 C	DS12R885S	SMD/SMT		Tube
Real Time Clock Serial Alarm Real-Time Clock DS1305E+ Analog Devices / Maxim Integrated 1: $13.21 123In Stock	Mfr. Part No. DS1305E+ Mouser Part No 700-DS1305E	Analog Devices / Maxim Integrated	Real Time Clock Serial Alarm Real-Time Clock	Datasheet	123In Stock	$13.21 $10.28 $9.55 $8.73 View $8.28 $8.11 $7.92 Quote	Min.: 1 Mult.: 1	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		Tube
Real Time Clock Serial Alarm Real-Time Clock DS1306+ Analog Devices / Maxim Integrated 1: $15.16 103In Stock	Mfr. Part No. DS1306+ Mouser Part No 700-DS1306	Analog Devices / Maxim Integrated	Real Time Clock Serial Alarm Real-Time Clock	Datasheet	103In Stock	$15.16 $11.90 $10.10 $10.08 View $9.36 $9.14 $8.87 Quote	Min.: 1 Mult.: 1	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	DS1306	Through Hole		Tube
Real Time Clock 64 x 8, Serial, I C Real-Time Clock DS1307ZN+ Analog Devices / Maxim Integrated 1: $8.70 372In 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	372In Stock	$8.70 $6.66 $6.16 $5.22 View $5.17 $5.10 $5.05	Min.: 1 Mult.: 1	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+ Analog Devices / Maxim Integrated 1: $8.45 142In Stock	Mfr. Part No. DS1308U-18+ Mouser Part No 700-DS1308U-18+	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	142In Stock	$8.45 $6.47 $5.48 $5.43 View $5.17 $5.02 $4.95 $4.90	Min.: 1 Mult.: 1	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		Tube
Real Time Clock Low-Current I C RTC with 56-Byte NV RAM DS1308U-3+ Analog Devices / Maxim Integrated 1: $8.77 91In Stock	Mfr. Part No. DS1308U-3+ Mouser Part No 700-DS1308U-3+	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	91In Stock	$8.77 $6.72 $5.70 $5.63 View $5.37 $5.21 $5.14 $5.09	Min.: 1 Mult.: 1	I2C	YY-MM-DD-dd	HH:MM:SS:hh (12 hr, 24 hr)	uSOP-8	Backup Switching	2.7 V	5.5 V	- 40 C	+ 85 C	DS1308U	SMD/SMT		Tube
Real Time Clock Low-Current I C RTC with 56-Byte NV RAM DS1308U-33+ Analog Devices / Maxim Integrated 1: $8.77 116In Stock	Mfr. Part No. DS1308U-33+ Mouser Part No 700-DS1308U-33+	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	116In Stock	$8.77 $6.72 $6.16 $5.63 View $5.37 $5.15 $5.07 $4.99 Quote	Min.: 1 Mult.: 1	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		Tube
Real Time Clock I C Serial Real-Time Clock DS1337S+ Analog Devices / Maxim Integrated 1: $6.34 148In Stock	Mfr. Part No. DS1337S+ Mouser Part No 700-DS1337S	Analog Devices / Maxim Integrated	Real Time Clock I C Serial Real-Time Clock Learn More about Analog Devices / Maxim Integrated maxim ds1337 rtc	Datasheet	148In Stock	$6.34 $5.14 $4.73 $4.26 View $4.04 $3.94 $3.69	Min.: 1 Mult.: 1	I2C	YY-MM-DD-dd	HH:MM:SS:hh (12 hr, 24 hr)	SO-8	No Backup Switching	1.8 V	5.5 V	- 40 C	+ 85 C	DS1337S	SMD/SMT		Tube
Real Time Clock I C Serial Real-Time Clock DS1337U+ Analog Devices / Maxim Integrated 1: $6.83 297In Stock	Mfr. Part No. DS1337U+ Mouser Part No 700-DS1337U	Analog Devices / Maxim Integrated	Real Time Clock I C Serial Real-Time Clock Learn More about Analog Devices / Maxim Integrated maxim ds1337 rtc	Datasheet	297In Stock	$6.83 $5.15 $4.72 $4.26 View $4.04 $4.01 $3.77 $3.69	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	DS1337U	SMD/SMT		Tube
Real Time Clock I C Serial Real-Time Clock DS1337U+T&R Analog Devices / Maxim Integrated 1: $6.83 459In 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	459In Stock	Cut Tape $6.83 $5.15 $4.73 $4.27 View $4.05 $4.03 $4.01 $3.40 MouseReel Available	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	DS1337U	SMD/SMT		Reel, Cut Tape, MouseReel
Real Time Clock I C RTC with 56-Byte NV RAM DS1338U-3+ Analog Devices / Maxim Integrated 1: $9.02 119In Stock	Mfr. Part No. DS1338U-3+ Mouser Part No 700-DS1338U-3	Analog Devices / Maxim Integrated	Real Time Clock I C RTC with 56-Byte NV RAM	Datasheet	119In Stock	$9.02 $6.91 $6.38 $5.81 View $5.52 $5.36 $5.30 $5.24	Min.: 1 Mult.: 1	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	DS1338U	SMD/SMT		Tube
Real Time Clock I C RTC with 56-Byte NV RAM DS1338U-33+ Analog Devices / Maxim Integrated 1: $8.47 347In Stock	Mfr. Part No. DS1338U-33+ Mouser Part No 700-DS1338U-33	Analog Devices / Maxim Integrated	Real Time Clock I C RTC with 56-Byte NV RAM	Datasheet	347In Stock	$8.47 $6.92 $5.88 $5.81 View $5.52 $5.36 $5.30 $5.24	Min.: 1 Mult.: 1	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		Tube
Real Time Clock I C RTC with 56-Byte NV RAM DS1338Z-33+T&R Analog Devices / Maxim Integrated 1: $9.03 146In 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	146In Stock	Cut Tape $9.03 $6.92 $6.39 $5.82 $5.70 $4.88 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 SERIAL RTC 1.8-3.3V HESR USOP DS1339BU+ Analog Devices / Maxim Integrated 1: $10.05 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	$10.05 $7.75 $6.58 $6.53 View $6.05 $5.78 $5.59 $5.39	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: $9.59 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	$9.59 $7.26 $6.56 $6.05 View $5.75 $5.56 $5.44 $5.43 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: $9.57 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 $9.57 $7.34 $6.79 $6.17 View $5.88 $5.70 $5.63 $5.55 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: $16.24 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	$16.24 $12.72 $11.83 $10.85 View $10.76 $10.12 $9.89 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: $9.03 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	$9.03 $6.92 $6.34 $5.81 View $5.52 $5.36 $5.30 $5.24	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