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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	Qualification	Packaging
Real Time Clock Timer Control Periph eral A 926-DP8570AV A 926-DP8570AVX/NOPB DP8570AV/NOPB Texas Instruments 1: $53.09 7In Stock	Mfr. Part No. DP8570AV/NOPB Mouser Part No 926-DP8570AV/NOPB	Texas Instruments	Real Time Clock Timer Control Periph eral A 926-DP8570AV A 926-DP8570AVX/NOPB	Datasheet	7In Stock	$53.09 $43.49 $40.63 $38.66 View $37.70 Quote	Min.: 1 Mult.: 1	Parallel	YY-MM-DD-dd	HH:MM:SS:hh (12 hr, 24 hr)	PLCC-28	Backup Switching	4.5 V	5.5 V	- 40 C	+ 85 C	DP8570A	SMD/SMT		Tube
Real Time Clock LDAL TIME CLK & TEMP COMPENSATED CR ISL12020MIRZ-T7A Renesas / Intersil 1: $11.66 160In Stock 250Expected 30/10/2026	Mfr. Part No. ISL12020MIRZ-T7A Mouser Part No 968-ISL12020MIRZ-T7A	Renesas / Intersil	Real Time Clock LDAL TIME CLK & TEMP COMPENSATED CR	Datasheet	160In Stock 250Expected 30/10/2026	Cut Tape $11.66 $9.11 $8.47 $7.77 Reel $7.40 View $7.06 $6.92 Quote MouseReel Available	Min.: 1 Mult.: 1 : 250	I2C	YY-MM-DD-dd	HH:MM:SS (24 hr)	DFN-20	Backup Switching	2.7 V	5.5 V	- 40 C	+ 85 C	ISL12020	SMD/SMT		Reel, Cut Tape, MouseReel
Real Time Clock REAL TIME CLK/CLNDR W/TEMP COMP 8 L ISL12022IBZ-T7A Renesas / Intersil 1: $5.32 47In Stock 2,500On Order	Mfr. Part No. ISL12022IBZ-T7A Mouser Part No 968-ISL12022IBZ-T7A	Renesas / Intersil	Real Time Clock REAL TIME CLK/CLNDR W/TEMP COMP 8 L	Datasheet	47In Stock 2,500On Order On Order Ship Dates Mfr. No: ISL12022IBZ-T7A Stock: 47 Can Dispatch Immediately On Order: 1,000 Expected 26/07/2027 1,500 Expected 30/07/2027 Factory Lead Time: 36 Weeks	Cut Tape $5.32 $4.05 $3.74 $3.39 Reel $3.22 View $3.09 $3.03 $2.98 Quote MouseReel Available	Min.: 1 Mult.: 1 : 250	Serial 2-Wire, I2C	YY-MM-DD-dd	HH:MM:SS (24 hr)	SOIC-8	Backup Switching	2.7 V	5.5 V	- 40 C	+ 85 C	ISL12022	SMD/SMT		Reel, Cut Tape, MouseReel
Real Time Clock REAL TIME CLK W/ ALARM DS1337 COMP ISL12057IBZ-T Renesas / Intersil 1: $2.85 351In Stock 17,500On Order	Mfr. Part No. ISL12057IBZ-T Mouser Part No 968-ISL12057IBZ-T	Renesas / Intersil	Real Time Clock REAL TIME CLK W/ ALARM DS1337 COMP	Datasheet	351In Stock 17,500On Order On Order Ship Dates Mfr. No: ISL12057IBZ-T Stock: 351 Can Dispatch Immediately On Order: 7,500 Expected 16/04/2027 10,000 Expected 14/06/2027 Factory Lead Time: 36 Weeks	Cut Tape $2.85 $2.13 $1.95 $1.75 Reel $1.54 View $1.66 $1.60 $1.57 $1.45 MouseReel Available	Min.: 1 Mult.: 1 : 2,500	I2C	YY-MM-DD-dd	HH:MM:SS (24 hr)	SOIC-8	No Backup Switching	1.8 V	3.6 V	- 40 C	+ 85 C	ISL12057	SMD/SMT		Reel, Cut Tape, MouseReel
Real Time Clock REAL TIME CLK W/ ALARM DS1337 COMP ISL12057IUZ Renesas / Intersil 1: $2.97 751In Stock 6,450On Order	Mfr. Part No. ISL12057IUZ Mouser Part No 968-ISL12057IUZ	Renesas / Intersil	Real Time Clock REAL TIME CLK W/ ALARM DS1337 COMP	Datasheet	751In Stock 6,450On Order On Order Ship Dates Mfr. No: ISL12057IUZ Stock: 751 Can Dispatch Immediately On Order: 3,100 Expected 25/01/2027 3,350 Expected 08/03/2027 Factory Lead Time: 36 Weeks	$2.97 $2.22 $1.94 $1.81 View $1.71 $1.65 $1.57 $1.53 $1.50	Min.: 1 Mult.: 1	I2C	YY-MM-DD-dd	HH:MM:SS (24 hr)	MSOP-8	No Backup Switching	1.8 V	3.6 V	- 40 C	+ 85 C	ISL12057	SMD/SMT		Tube
Real Time Clock REAL TIME CLK W/ ALARM & TIMR FUNCTNS ISL12058IBZ Renesas / Intersil 1: $2.85 566In Stock	Mfr. Part No. ISL12058IBZ Mouser Part No 968-ISL12058IBZ	Renesas / Intersil	Real Time Clock REAL TIME CLK W/ ALARM & TIMR FUNCTNS	Datasheet	566In Stock	$2.85 $2.13 $1.95 $1.75 View $1.66 $1.61 $1.51 $1.46 $1.44	Min.: 1 Mult.: 1	I2C	YY-MM-DD-dd	HH:MM:SS (24 hr)	SOIC-8	No Backup Switching	1.8 V	3.6 V	- 40 C	+ 85 C	ISL12058	SMD/SMT		Tube
Real Time Clock RTC I2c Serial IC 1.8 to 5.5V 32kHz 1337AGDVGI Renesas Electronics 1: $2.90 7In Stock 768Expected 10/01/2028	Mfr. Part No. 1337AGDVGI Mouser Part No 972-1337AGDVGI	Renesas Electronics	Real Time Clock RTC I2c Serial IC 1.8 to 5.5V 32kHz	Datasheet	7In Stock 768Expected 10/01/2028	$2.90 $2.17	Min.: 1 Mult.: 1				MSOP-8						1337AGD	SMD/SMT		Tube
Real Time Clock .9RTC BASE 1338-31DCGI8 Renesas Electronics 1: $3.93 5In Stock 6,000Expected 10/01/2028	Mfr. Part No. 1338-31DCGI8 Mouser Part No 972-1338-31DCGI8	Renesas Electronics	Real Time Clock .9RTC BASE	Datasheet	5In Stock 6,000Expected 10/01/2028	Cut Tape $3.93 $2.93 $2.68 $2.41 View Reel $2.24 $2.27 $2.24 $2.24 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: $1.69 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 14/01/2027 7,500 Expected 15/02/2027 Factory Lead Time: 27 Weeks	Cut Tape $1.69 $1.24 $1.12 $0.99 View Reel $0.792 $0.93 $0.893 $0.883 $0.792 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: $27.09 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	$27.09 $21.65 $20.29 $18.80 View $18.09 $17.66	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 Real Time Clock MSOP-8 T&R 2.5K PT7C433833AUEX Diodes Incorporated 1: $1.48 2,103In Stock Factory Special Order	Mfr. Part No. PT7C433833AUEX Mouser Part No 729-PT7C433833AUEX Factory Special Order	Diodes Incorporated	Real Time Clock Real Time Clock MSOP-8 T&R 2.5K Learn More about Diodes Incorporated diodes timing solutions	Datasheet	2,103In Stock	Cut Tape $1.48 $1.08 $0.984 $0.873 Reel View $0.82 $0.788 $0.778 $0.729 $0.728	Min.: 1 Mult.: 1 : 2,500	Serial 2-Wire, I2C	YY-MM-DD-dd	HH:MM:SS:hh (12 hr, 24 hr)		Backup Switching	2.7 V	5.5 V	- 40 C	+ 85 C		SMD/SMT		Reel, Cut Tape
Real Time Clock 4096k NV SRAM with Phantom Clock DS1251W-120IND+ Analog Devices / Maxim Integrated 1: $89.50 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	$89.50 $74.53 $67.80 $64.25 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: $21.12 96In Stock	Mfr. Part No. DS12887A+ Mouser Part No 700-DS12887A	Analog Devices / Maxim Integrated	Real Time Clock Real-Time Clocks	Datasheet	96In Stock	$21.12 $16.44 $15.66 $14.46 View $13.79 $13.54 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: $20.46 54In Stock	Mfr. Part No. DS12C887A+ Mouser Part No 700-DS12C887A	Analog Devices / Maxim Integrated	Real Time Clock Real-Time Clocks	Datasheet	54In Stock	$20.46 $16.22 $15.15 $13.98 View $13.33 $13.10 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: $22.39 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	$22.39 $17.90 $16.77 $15.54 View $14.95 $14.59	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: $7.95 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	$7.95 $6.13 $5.68 $5.05 View $4.75 $4.69 $4.57 $4.39 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: $9.71 198In Stock	Mfr. Part No. DS1305E+ Mouser Part No 700-DS1305E	Analog Devices / Maxim Integrated	Real Time Clock Serial Alarm Real-Time Clock	Datasheet	198In Stock	$9.71 $7.56 $7.02 $6.42 View $6.09 $5.96 $5.82 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: $11.15 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	$11.15 $8.75 $7.43 $7.41 View $6.88 $6.72 $6.52 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 Low-Current I C RTC with 56-Byte NV RAM DS1308U-18+ Analog Devices / Maxim Integrated 1: $6.21 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	$6.21 $4.76 $4.03 $3.99 View $3.80 $3.69 $3.64 $3.60	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: $6.45 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	$6.45 $4.94 $4.19 $4.14 View $3.95 $3.83 $3.78 $3.74	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: $6.45 133In 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	133In Stock	$6.45 $4.94 $4.53 $4.14 View $3.95 $3.79 $3.73 $3.67 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: $4.66 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	$4.66 $3.78 $3.48 $3.13 View $2.97 $2.90 $2.71	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: $5.02 308In 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	308In Stock	$5.02 $3.79 $3.47 $3.13 View $2.97 $2.95 $2.77 $2.71	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 RTC with 56-Byte NV RAM DS1338U-3+ Analog Devices / Maxim Integrated 1: $6.64 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	$6.64 $5.09 $4.32 $4.27 View $4.06 $3.94 $3.90 $3.85	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: $6.23 350In 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	350In Stock	$6.23 $5.09 $4.32 $4.27 View $4.06 $3.94 $3.90 $3.85	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