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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 (CLP) 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: $1.698 5.003In Stock	Mfr. Part # R2023T-E2-F Mouser Part # 848-R2023TE2F	Nisshinbo	Real Time Clock 2-Wire Real Time Clock IC	Datasheet	5.003In Stock	Cut Tape $1.698 $1.242 $1.124 $998 Reel $777 View $936 $900 $810 $775 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: $3.680 1.154In Stock	Mfr. Part # ISL12008IB8Z-T Mouser Part # 968-ISL12008IB8Z-T	Renesas / Intersil	Real Time Clock LW PWR RTC W/RESEAL 8LD	Datasheet	1.154In Stock	Cut Tape $3.680 $2.746 $2.506 $2.256 Reel $1.903 View $2.130 $2.085 $1.971 $1.868 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: $1.549 2.889In Stock	Mfr. Part # S-35190A-I8T1U Mouser Part # 628-S-35190A-I8T1U	ABLIC	Real Time Clock 3-wire Real Time Clock	Datasheet	2.889In Stock	Cut Tape $1.549 $1.265 $1.196 $1.115 View Reel $972 $1.079 $1.057 $1.054 $973 $972 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: $8.510 433In Stock	Mfr. Part # ISL12022MAIBZ Mouser Part # 968-ISL12022MAIBZ	Renesas / Intersil	Real Time Clock REAL TIME CLK ENHANC CD ESD & MOISTURESIS	Datasheet	433In Stock	$8.510 $6.562 $5.582 $5.206 View $4.979 $4.910 $4.899 $4.831 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: $3.213 1.952In Stock	Mfr. Part # ISL12057IBZ Mouser Part # 968-ISL12057IBZ	Renesas / Intersil	Real Time Clock REAL TIME CLK W/ ALARM DS1337 COMP	Datasheet	1.952In Stock	$3.213 $2.392 $2.199 $1.971 View $1.857 $1.777 $1.720 $1.663 $1.629	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: $4.568 1.963In Stock	Mfr. Part # ISL1209IU10Z-TK Mouser Part # 968-ISL1209IU10Z-TK	Renesas / Intersil	Real Time Clock I2CAL TIME CLK/CLNDR W/EVENT DETCT 10LD	Datasheet	1.963In Stock	Cut Tape $4.568 $3.441 $3.167 $2.860 View Reel $2.392 $2.711 $2.689 $2.392 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: $2.108 717In Stock	Mfr. Part # MCP795W12-I/SL Mouser Part # 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	$2.108 $1.948 $1.846 $1.834	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: $1.868 1.445In Stock	Mfr. Part # RV5C348B-E2-F Mouser Part # 848-RV5C348B-E2-F	Nisshinbo	Real Time Clock 4-wire Serial Interface	Datasheet	1.445In Stock	Cut Tape $1.868 $1.367 $1.242 $1.095 Reel $908 View $1.029 $989 $909 $903 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: $1.868 1.720In Stock	Mfr. Part # RV5C348A-E2-F Mouser Part # 848-RV5C348AE2F	Nisshinbo	Real Time Clock 4-Wire Real Time Clock IC	Datasheet	1.720In Stock	Cut Tape $1.868 $1.367 $1.242 $1.095 Reel $908 View $1.029 $989 $909 $870 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: $2.609 673In Stock	Mfr. Part # BQ32000D Mouser Part # 595-BQ32000D	Texas Instruments	Real Time Clock Serial RTC A 595-BQ3 2000DR A 595-BQ3200 A 595-BQ32000DR	Datasheet	673In Stock	$2.609 $2.187 $1.982 $1.698 View $1.652 $1.641 $1.606 $1.584	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: $1.834 3.620In Stock	Mfr. Part # R2051L02-E2 Mouser Part # 848-R2051L02-E2	Nisshinbo	Real Time Clock 2-Wire Real Time Clock IC	Datasheet	3.620In Stock	Cut Tape $1.834 $1.344 $1.219 $1.075 Reel $846 View $1.011 $971 $881 $840 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: $809 1.302In Stock	Mfr. Part # MCP7940M-I/ST Mouser Part # 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	$809 $788 $752 $706 $705	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: $5.423 899In Stock NRND	Mfr. Part # RV-3049-C3-32.768KHZ-OPTION-A-TA-QC Mouser Part # 428-202184-MG01 NRND	Micro Crystal	Real Time Clock 32.768 kHz OPTION A TEMP COMP SPI	Datasheet	899In Stock	$5.423 $4.090 $3.760 $3.384 View $3.213 $3.190 $2.700 $2.689 $2.677	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: $1.698 1.989In Stock	Mfr. Part # R2033T-E2-F Mouser Part # 848-R2033TE2F	Nisshinbo	Real Time Clock 3-Wire Real Time Clock IC	Datasheet	1.989In Stock	Cut Tape $1.698 $1.242 $1.124 $998 View Reel $791 $936 $900 $797 $791 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: $1.857 1.680In Stock	Mfr. Part # R2223T-E2-F Mouser Part # 848-R2223TE2F	Nisshinbo	Real Time Clock 2-Wire Real Time Clock IC		1.680In Stock	Cut Tape $1.857 $1.367 $1.242 $1.103 Reel $845 View $1.046 $997 $846 $841 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: $10.447 895In Stock End of Life	Mfr. Part # BQ4802LYDWR Mouser Part # 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 $10.447 $8.089 $7.508 $6.858 Reel $6.141 View $6.551 $6.369 $5.993 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: $6.642 2.513In Stock	Mfr. Part # DS1337+ Mouser Part # 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	$6.642 $5.058 $4.648 $3.828 View $3.668 $3.612	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: $14.856 253In Stock	Mfr. Part # DS1558Y+ Mouser Part # 700-DS1558Y	Analog Devices / Maxim Integrated	Real Time Clock Watchdog Clocks with NV RAM Control	Datasheet	253In Stock	$14.856 $14.537 $14.218 $13.933	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: $4.261 2.764In Stock	Mfr. Part # MAX31331TETB+ Mouser Part # 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	$4.261 $3.179 $2.905 $2.609 View $2.461 $2.222 $2.119	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: $7.565 2.678In Stock	Mfr. Part # DS1338Z-3+ Mouser Part # 700-DS1338Z-3	Analog Devices / Maxim Integrated	Real Time Clock I C RTC with 56-Byte NV RAM	Datasheet	2.678In Stock	$7.565 $5.799 $5.355 $4.865 View $4.625 $4.489 $4.443	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: $3.668 664In Stock	Mfr. Part # DS1672U-33+T&R Mouser Part # 700-DS1672U-33T&R	Analog Devices / Maxim Integrated	Real Time Clock I C 32-Bit Binary Counter RTC	Datasheet	664In Stock	Cut Tape $3.668 $3.589 $3.509 $3.441 View $3.384 $3.338 $3.338 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: $9.365 1.069In Stock	Mfr. Part # DS1685EN-3+T&R Mouser Part # 700-DS1685EN-3T&R	Analog Devices / Maxim Integrated	Real Time Clock 3V/5V Real-Time Clock	Datasheet	1.069In Stock	Cut Tape $9.365 $9.160 $8.955 $8.772 View Reel $8.510 $8.647 $8.510 $8.510 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: $37.870 86In Stock	Mfr. Part # DS1687-5IND+ Mouser Part # 700-DS1687-5IND	Analog Devices / Maxim Integrated	Real Time Clock 3V/5V Real-Time Clock	Datasheet	86In Stock	$37.870 $30.658 $28.846 $27.662 $25.919	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: $15.813 1.067In Stock	Mfr. Part # DS1305N+ Mouser Part # 700-DS1305N	Analog Devices / Maxim Integrated	Real Time Clock Serial Alarm Real-Time Clock	Datasheet	1.067In Stock	$15.813 $12.384 $11.507 $10.572 View $10.367 $9.855	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: $15.676 162In Stock	Mfr. Part # DS1501YN+ Mouser Part # 700-DS1501YN	Analog Devices / Maxim Integrated	Real Time Clock Y2K-Compliant Watchdog Real-Time Clocks	Datasheet	162In Stock	$15.676 $15.335 $15.004 $14.697	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