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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 2-Wire Real Time Clock IC R2023T-E2-F Nisshinbo 1: $1.49 5,003In Stock	Mfr. Part No. R2023T-E2-F Mouser Part No 848-R2023TE2F	Nisshinbo	Real Time Clock 2-Wire Real Time Clock IC	Datasheet	5,003In Stock	Cut Tape $1.49 $1.09 $0.987 $0.876 Reel $0.682 View $0.822 $0.79 $0.711 $0.68 MouseReel Available	Min.: 1 Mult.: 1 : 2,000	Serial 2-Wire, I2C	YY-MM-DD-dd	HH:MM:SS:hh (12 hr, 24 hr)	TSSOP-10	No Backup Switching	1.7 V	5.5 V	- 40 C	+ 85 C	R2023T	SMD/SMT	Reel, Cut Tape, MouseReel
Real Time Clock LW PWR RTC W/RESEAL 8LD ISL12008IB8Z-T Renesas / Intersil 1: $3.23 1,154In Stock	Mfr. Part No. ISL12008IB8Z-T Mouser Part No 968-ISL12008IB8Z-T	Renesas / Intersil	Real Time Clock LW PWR RTC W/RESEAL 8LD	Datasheet	1,154In Stock	Cut Tape $3.23 $2.41 $2.20 $1.98 Reel $1.67 View $1.87 $1.83 $1.73 $1.64 MouseReel Available	Min.: 1 Mult.: 1 : 2,500	Serial 2-Wire, I2C	YY-MM-DD-dd	HH:MM:SS:hh (12 hr, 24 hr)	SOIC-8	Backup Switching	2.7 V	5.5 V	- 40 C	+ 85 C	ISL12008	SMD/SMT	Reel, Cut Tape, MouseReel
Real Time Clock 3-wire Real Time Clock S-35190A-I8T1U ABLIC 1: $1.36 2,889In Stock	Mfr. Part No. S-35190A-I8T1U Mouser Part No 628-S-35190A-I8T1U	ABLIC	Real Time Clock 3-wire Real Time Clock	Datasheet	2,889In Stock	Cut Tape $1.36 $1.11 $1.05 $0.979 View Reel $0.853 $0.947 $0.928 $0.925 $0.854 $0.853 MouseReel Available	Min.: 1 Mult.: 1 : 5,000	Serial 3-Wire	YY-MM-DD-dd	HH:MM:SS (24 hr)	SNT-A-8	Backup Switching	1.3 V	5.5 V	- 40 C	+ 85 C	S-35190	SMD/SMT	Reel, Cut Tape, MouseReel
Real Time Clock REAL TIME CLK ENHANC CD ESD & MOISTURESIS ISL12022MAIBZ Renesas / Intersil 1: $7.47 433In Stock	Mfr. Part No. ISL12022MAIBZ Mouser Part No 968-ISL12022MAIBZ	Renesas / Intersil	Real Time Clock REAL TIME CLK ENHANC CD ESD & MOISTURESIS	Datasheet	433In Stock	$7.47 $5.76 $4.90 $4.57 View $4.37 $4.31 $4.30 $4.24 Quote	Min.: 1 Mult.: 1	Serial 2-Wire, I2C	YY-MM-DD-dd	HH:MM:SS (24 hr)	SOIC-20	Backup Switching	2.7 V	5.5 V	- 40 C	+ 85 C	ISL12022	SMD/SMT	Tube
Real Time Clock REAL TIME CLK W/ ALARM DS1337 COMP ISL12057IBZ Renesas / Intersil 1: $2.82 1,952In Stock	Mfr. Part No. ISL12057IBZ Mouser Part No 968-ISL12057IBZ	Renesas / Intersil	Real Time Clock REAL TIME CLK W/ ALARM DS1337 COMP	Datasheet	1,952In Stock	$2.82 $2.10 $1.93 $1.73 View $1.63 $1.56 $1.51 $1.46 $1.43	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	ISL12057	SMD/SMT	Tube
Real Time Clock I2CAL TIME CLK/CLNDR W/EVENT DETCT 10LD ISL1209IU10Z-TK Renesas / Intersil 1: $4.01 1,963In Stock	Mfr. Part No. ISL1209IU10Z-TK Mouser Part No 968-ISL1209IU10Z-TK	Renesas / Intersil	Real Time Clock I2CAL TIME CLK/CLNDR W/EVENT DETCT 10LD	Datasheet	1,963In Stock	Cut Tape $4.01 $3.02 $2.78 $2.51 View Reel $2.10 $2.38 $2.36 $2.10 MouseReel Available	Min.: 1 Mult.: 1 : 1,000	I2C	YY-MM-DD-dd	HH:MM:SS (24 hr)	MSOP-10	Backup Switching	2.7 V	5.5 V	- 40 C	+ 85 C	ISL1209	SMD/SMT	Reel, Cut Tape, MouseReel
Real Time Clock 1Kb EE 64B SRAM WD TED EUI-64 MCP795W12-I/SL Microchip Technology 1: $1.85 717In Stock	Mfr. Part No. MCP795W12-I/SL Mouser Part No 579-MCP795W12-I/SL	Microchip Technology	Real Time Clock 1Kb EE 64B SRAM WD TED EUI-64 Learn More about Microchip Technology microchip mcp795xx	Datasheet	717In Stock	$1.85 $1.71 $1.62 $1.61	Min.: 1 Mult.: 1	SPI	YY-MM-DD-dd	HH:MM:SS:hh (12 hr, 24 hr)	SOIC-14	Backup Switching	1.8 V	5.5 V	- 40 C	+ 85 C		SMD/SMT	Tube
Real Time Clock 4-wire Serial Interface RV5C348B-E2-F Nisshinbo 1: $1.64 1,445In Stock	Mfr. Part No. RV5C348B-E2-F Mouser Part No 848-RV5C348B-E2-F	Nisshinbo	Real Time Clock 4-wire Serial Interface	Datasheet	1,445In Stock	Cut Tape $1.64 $1.20 $1.09 $0.961 Reel $0.797 View $0.903 $0.868 $0.798 $0.793 MouseReel Available	Min.: 1 Mult.: 1 : 2,000	Serial 4-Wire	YY-MM-DD-dd	HH:MM:SS:hh (12 hr, 24 hr)	SSOP-10	Backup Switching	2 V	5.5 V	- 40 C	+ 85 C	RV5C348	SMD/SMT	Reel, Cut Tape, MouseReel
Real Time Clock 4-Wire Real Time Clock IC RV5C348A-E2-F Nisshinbo 1: $1.64 1,720In Stock	Mfr. Part No. RV5C348A-E2-F Mouser Part No 848-RV5C348AE2F	Nisshinbo	Real Time Clock 4-Wire Real Time Clock IC	Datasheet	1,720In Stock	Cut Tape $1.64 $1.20 $1.09 $0.961 Reel $0.797 View $0.903 $0.868 $0.798 $0.764 MouseReel Available	Min.: 1 Mult.: 1 : 2,000	Serial 4-Wire, SPI	YY-MM-DD-dd	HH:MM:SS:hh (12 hr, 24 hr)	SSOP-10	Backup Switching	2 V	5.5 V	- 40 C	+ 85 C	RV5C348	SMD/SMT	Reel, Cut Tape, MouseReel
Real Time Clock Serial RTC A 595-BQ3 2000DR A 595-BQ3200 A 595-BQ32000DR BQ32000D Texas Instruments 1: $2.29 673In Stock	Mfr. Part No. BQ32000D Mouser Part No 595-BQ32000D	Texas Instruments	Real Time Clock Serial RTC A 595-BQ3 2000DR A 595-BQ3200 A 595-BQ32000DR	Datasheet	673In Stock	$2.29 $1.92 $1.74 $1.49 View $1.45 $1.44 $1.41 $1.39	Min.: 1 Mult.: 1	Serial	YY-MM-DD-dd	HH:MM:SS:hh (12 hr, 24 hr)	SOIC-8	Backup Switching	3 V	3.6 V	- 40 C	+ 85 C	BQ32000	SMD/SMT	Tube
Real Time Clock 2-Wire Real Time Clock IC R2051L02-E2 Nisshinbo 1: $1.61 3,620In Stock	Mfr. Part No. R2051L02-E2 Mouser Part No 848-R2051L02-E2	Nisshinbo	Real Time Clock 2-Wire Real Time Clock IC	Datasheet	3,620In Stock	Cut Tape $1.61 $1.18 $1.07 $0.944 Reel $0.743 View $0.887 $0.852 $0.773 $0.737 MouseReel Available	Min.: 1 Mult.: 1 : 3,000	Serial 2-Wire, I2C	YY-MM-DD-dd	HH:MM:SS:hh (12 hr, 24 hr)	QFN023023-16	Backup Switching	750 mV	5.5 V	- 40 C	+ 85 C	R2051L	SMD/SMT	Reel, Cut Tape, MouseReel
Real Time Clock I2C RTCC 64B SRAM No VBAT MCP7940M-I/ST Microchip Technology 1: $0.71 1,302In Stock	Mfr. Part No. MCP7940M-I/ST Mouser Part No 579-MCP7940M-I/ST	Microchip Technology	Real Time Clock I2C RTCC 64B SRAM No VBAT Learn More about Microchip Technology microchip real time clocks	Datasheet	1,302In Stock	$0.71 $0.692 $0.66 $0.62 $0.619	Min.: 1 Mult.: 1	I2C	YY-MM-DD-dd	HH:MM:SS:hh (12 hr, 24 hr)	TSSOP-8	No Backup Switching	1.8 V	5.5 V	- 40 C	+ 85 C		SMD/SMT	Tube
Real Time Clock 32.768 kHz OPTION A TEMP COMP SPI RV-3049-C3-32.768KHZ-OPTION-A-TA-QC Micro Crystal 1: $4.76 899In Stock NRND	Mfr. Part No. RV-3049-C3-32.768KHZ-OPTION-A-TA-QC Mouser Part No 428-202184-MG01 NRND	Micro Crystal	Real Time Clock 32.768 kHz OPTION A TEMP COMP SPI	Datasheet	899In Stock	$4.76 $3.59 $3.30 $2.97 View $2.82 $2.80 $2.37 $2.36 $2.35	Min.: 1 Mult.: 1	Serial 2-Wire, I2C	YY-MM-DD-dd	HH:MM:SS (24 hr)		Backup Switching	1.3 V	5.5 V	- 40 C	+ 85 C	RV-3049-C3	SMD/SMT
Real Time Clock 3-Wire Real Time Clock IC R2033T-E2-F Nisshinbo 1: $1.49 1,989In Stock	Mfr. Part No. R2033T-E2-F Mouser Part No 848-R2033TE2F	Nisshinbo	Real Time Clock 3-Wire Real Time Clock IC	Datasheet	1,989In Stock	Cut Tape $1.49 $1.09 $0.987 $0.876 View Reel $0.694 $0.822 $0.79 $0.70 $0.694 MouseReel Available	Min.: 1 Mult.: 1 : 2,000	Serial 3-Wire	YY-MM-DD-dd	HH:MM:SS:hh (12 hr, 24 hr)	TSSOP-10	No Backup Switching	1.7 V	5.5 V	- 40 C	+ 85 C	R2033T	SMD/SMT	Reel, Cut Tape, MouseReel
Real Time Clock 2-Wire Real Time Clock IC R2223T-E2-F Nisshinbo 1: $1.63 1,680In Stock	Mfr. Part No. R2223T-E2-F Mouser Part No 848-R2223TE2F	Nisshinbo	Real Time Clock 2-Wire Real Time Clock IC		1,680In Stock	Cut Tape $1.63 $1.20 $1.09 $0.968 Reel $0.742 View $0.918 $0.875 $0.743 $0.738 MouseReel Available	Min.: 1 Mult.: 1 : 2,000	Serial 2-Wire, I2C	YY-MM-DD-dd	HH:MM:SS:hh (12 hr, 24 hr)	TSSOP-10	No Backup Switching	1.5 V	5.5 V	- 40 C	+ 85 C	R2223T	SMD/SMT	Reel, Cut Tape, MouseReel
Real Time Clock Parallel RTC A 595-B Q4802LYDW A 595-BQ4 A 595-BQ4802LYDW BQ4802LYDWR Texas Instruments 1: $9.17 895In Stock End of Life	Mfr. Part No. BQ4802LYDWR Mouser Part No 595-BQ4802LYDWR End of Life	Texas Instruments	Real Time Clock Parallel RTC A 595-B Q4802LYDW A 595-BQ4 A 595-BQ4802LYDW	Datasheet	895In Stock	Cut Tape $9.17 $7.10 $6.59 $6.02 Reel $5.39 View $5.75 $5.59 $5.26 Quote MouseReel Available	Min.: 1 Mult.: 1 : 1,000	Parallel	YY-MM-DD-dd	HH:MM:SS (24 hr)	SOIC-28	Backup Switching	2.7 V	3.6 V	0 C	+ 70 C	BQ4802LY	SMD/SMT	Reel, Cut Tape, MouseReel
Real Time Clock I C Serial Real-Time Clock DS1337+ Analog Devices / Maxim Integrated 1: $5.83 2,513In 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	2,513In Stock	$5.83 $4.44 $4.08 $3.36 View $3.22 $3.17	Min.: 1 Mult.: 1 Max.: 2,010	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: $13.04 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	$13.04 $12.76 $12.48 $12.23	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: $3.74 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	$3.74 $2.79 $2.55 $2.29 View $2.16 $1.95 $1.86	Min.: 1 Mult.: 1 Max.: 2,211												Tray
Real Time Clock I C RTC with 56-Byte NV RAM DS1338Z-3+ Analog Devices / Maxim Integrated 1: $6.64 2,678In Stock	Mfr. Part No. DS1338Z-3+ Mouser Part No 700-DS1338Z-3	Analog Devices / Maxim Integrated	Real Time Clock I C RTC with 56-Byte NV RAM	Datasheet	2,678In Stock	$6.64 $5.09 $4.70 $4.27 View $4.06 $3.94 $3.90	Min.: 1 Mult.: 1 Max.: 2,142	I2C	YY-MM-DD-dd	HH:MM:SS:hh (12 hr, 24 hr)	SOIC-8	Backup Switching	2.7 V	5.5 V	- 40 C	+ 85 C	DS1338Z	SMD/SMT	Tube
Real Time Clock I C 32-Bit Binary Counter RTC DS1672U-33+T&R Analog Devices / Maxim Integrated 1: $3.22 664In Stock	Mfr. Part No. DS1672U-33+T&R Mouser Part No 700-DS1672U-33T&R	Analog Devices / Maxim Integrated	Real Time Clock I C 32-Bit Binary Counter RTC	Datasheet	664In Stock	Cut Tape $3.22 $3.15 $3.08 $3.02 View $2.97 $2.93 $2.93 MouseReel Available	Min.: 1 Mult.: 1 Max.: 531	Serial 2-Wire, I2C	Binary	Binary		Backup Switching	2.97 V	3.63 V	- 40 C	+ 85 C	DS1672U	SMD/SMT	Reel, Cut Tape, MouseReel
Real Time Clock 3V/5V Real-Time Clock DS1685EN-3+T&R Analog Devices / Maxim Integrated 1: $8.22 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 $8.22 $8.04 $7.86 $7.70 View Reel $7.47 $7.59 $7.47 $7.47 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: $33.24 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	$33.24 $26.91 $25.32 $24.28 $22.75	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 Serial Alarm Real-Time Clock DS1305N+ Analog Devices / Maxim Integrated 1: $13.88 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	$13.88 $10.87 $10.10 $9.28 View $9.10 $8.65	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: $13.76 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	$13.76 $13.46 $13.17 $12.90	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