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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 3V/5V Real-Time Clock DS1685S-3+ Analog Devices / Maxim Integrated 1: $12.42 80In Stock	Mfr. Part No. DS1685S-3+ Mouser Part No 700-DS1685S-3	Analog Devices / Maxim Integrated	Real Time Clock 3V/5V Real-Time Clock	Datasheet	80In Stock	$12.42 $9.73 $9.05 $8.31 View $8.23 $7.74 $7.57 Quote	Min.: 1 Mult.: 1	Multiplexed	YY-MM-DD-dd	HH:MM:SS:hh (12 hr, 24 hr)	SO-24	Backup Switching	2.7 V	3.7 V	0 C	+ 70 C	DS1685S	SMD/SMT		Tube
Real Time Clock 3V/5V Real-Time Clock DS1685SN-3+ Analog Devices / Maxim Integrated 1: $15.59 20In Stock	Mfr. Part No. DS1685SN-3+ Mouser Part No 700-DS1685SN-3	Analog Devices / Maxim Integrated	Real Time Clock 3V/5V Real-Time Clock	Datasheet	20In Stock	$15.59 $12.31 $11.37 $10.51 View $10.14 $9.80 $9.58 Quote	Min.: 1 Mult.: 1	Multiplexed	YY-MM-DD-dd	HH:MM:SS:hh (12 hr, 24 hr)	SOIC-24	Backup Switching	2.7 V	3.7 V	- 40 C	+ 85 C	DS1685SN	SMD/SMT		Tube
Real Time Clock 3V/5V Real-Time Clock DS1687-3+ Analog Devices / Maxim Integrated 1: $30.64 68In Stock	Mfr. Part No. DS1687-3+ Mouser Part No 700-DS1687-3	Analog Devices / Maxim Integrated	Real Time Clock 3V/5V Real-Time Clock	Datasheet	68In Stock	$30.64 $24.49 $22.95 $21.26 View $20.46 $19.98 Quote	Min.: 1 Mult.: 1	Multiplexed	YY-MM-DD-dd	HH:MM:SS:hh (12 hr, 24 hr)	EDIP-24	Integrated Battery	2.7 V	3.7 V	0 C	+ 70 C	DS1687	Through Hole		Tube
Real Time Clock 3V/5V Real-Time Clocks DS17285SN-5+ Analog Devices / Maxim Integrated 1: $21.04 42In Stock	Mfr. Part No. DS17285SN-5+ Mouser Part No 700-DS17285SN-5	Analog Devices / Maxim Integrated	Real Time Clock 3V/5V Real-Time Clocks	Datasheet	42In Stock	$21.04 $16.68 $15.59 $14.38 View $13.71 $13.47 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	DS17285SN	SMD/SMT		Tube
Real Time Clock Y2K-Compliant, Nonvolatile Timekeeping R DS1744-70+ Analog Devices / Maxim Integrated 1: $64.78 188In Stock	Mfr. Part No. DS1744-70+ Mouser Part No 700-DS1744-70	Analog Devices / Maxim Integrated	Real Time Clock Y2K-Compliant, Nonvolatile Timekeeping R	Datasheet	188In Stock	$64.78 $53.51 $50.68 $50.04 Quote Quote	Min.: 1 Mult.: 1	Parallel	YY-MM-DD-dd	HH:MM:SS (24 hr)	EDIP-28	Integrated Battery	4.5 V	5.5 V	0 C	+ 70 C	DS1744	Through Hole		Tube
Real Time Clock Y2K-Compliant, Nonvolatile Timekeeping R DS1744WP-120+ Analog Devices / Maxim Integrated 1: $61.25 53In Stock	Mfr. Part No. DS1744WP-120+ Mouser Part No 700-DS1744WP-120	Analog Devices / Maxim Integrated	Real Time Clock Y2K-Compliant, Nonvolatile Timekeeping R	Datasheet	53In Stock	$61.25 $50.59 $47.93 $44.52 View Quote	Min.: 1 Mult.: 1	Parallel	YY-MM-DD-dd	HH:MM:SS (24 hr)	PowerCap Module-34	Backup Switching	2.97 V	3.63 V	0 C	+ 70 C	DS1744WP	Through Hole		Tray
Real Time Clock Y2K-Compliant, Nonvolatile Timekeeping R DS1746-70IND+ Analog Devices / Maxim Integrated 1: $77.61 35In Stock	Mfr. Part No. DS1746-70IND+ Mouser Part No 700-DS1746-70IND	Analog Devices / Maxim Integrated	Real Time Clock Y2K-Compliant, Nonvolatile Timekeeping R	Datasheet	35In Stock	$77.61 $64.10 $60.72 $59.96 View Quote	Min.: 1 Mult.: 1	Parallel	YY-MM-DD-dd	HH:MM:SS (24 hr)	EDIP-32	Integrated Battery	4.5 V	5.5 V	- 40 C	+ 85 C	DS1746	Through Hole		Tube
Real Time Clock 3V/5V Real-Time Clocks DS17487-3IND+ Analog Devices / Maxim Integrated 1: $24.19 6In Stock	Mfr. Part No. DS17487-3IND+ Mouser Part No 700-DS17487-3IND	Analog Devices / Maxim Integrated	Real Time Clock 3V/5V Real-Time Clocks	Datasheet	6In Stock	$24.19 $23.66 $23.14 $22.68 View $22.33 $21.99 Quote	Min.: 1 Mult.: 1	Multiplexed	YY-MM-DD-dd	HH:MM:SS (24 hr)	EDIP-24	Backup Switching	2.7 V	3.7 V	- 40 C	+ 85 C	DS17487	Through Hole		Tube
Real Time Clock 5ppm, I2C Real-Time Clock DS3231M+ Analog Devices / Maxim Integrated 1: $15.48 912In Stock	Mfr. Part No. DS3231M+ Mouser Part No 700-DS3231M+	Analog Devices / Maxim Integrated	Real Time Clock 5ppm, I2C Real-Time Clock Learn More about Analog Devices / Maxim Integrated maximds3231m	Datasheet	912In Stock	$15.48 $12.12 $11.26 $10.35 View $10.25 $9.65 $9.43 Quote	Min.: 1 Mult.: 1	I2C	YY-MM-DD-dd	HH:MM:SS (24 hr)	SO-16	Backup Switching	2.3 V	5.5 V	- 40 C	+ 85 C	DS3231M	SMD/SMT		Tube
Real Time Clock Extremely Accurate I C-Integrated RTC/TC DS3231SN# Analog Devices / Maxim Integrated 1: $18.59 762In Stock	Mfr. Part No. DS3231SN# Mouser Part No 700-DS3231SN#	Analog Devices / Maxim Integrated	Real Time Clock Extremely Accurate I C-Integrated RTC/TC	Datasheet	762In Stock	$18.59 $14.74 $13.46 $12.71 View $12.12 $11.90 Quote	Min.: 1 Mult.: 1	I2C	YY-MM-DD-dd	HH:MM:SS (24 hr)	SO-16	Backup Switching	2.3 V	5.5 V	- 40 C	+ 85 C	DS3231SN	SMD/SMT		Tube
Real Time Clock 5ppm, I C Real-Time Clock with SRAM DS3232MZ/V+ Analog Devices / Maxim Integrated 1: $13.53 179In Stock	Mfr. Part No. DS3232MZ/V+ Mouser Part No 700-DS3232MZ/V+	Analog Devices / Maxim Integrated	Real Time Clock 5ppm, I C Real-Time Clock with SRAM	Datasheet	179In Stock	$13.53 $10.64 $9.04 $8.64 View $8.18 $8.05 Quote	Min.: 1 Mult.: 1	I2C	YY-MM-DD-dd	HH:MM:SS:hh (12 hr, 24 hr)	SOIC-8	Backup Switching	2.3 V	4.5 V	- 40 C	+ 85 C	DS3232MZ	SMD/SMT	AEC-Q100	Tube
Real Time Clock Extremely Accurate I C RTC with Integrat DS3232S# Analog Devices / Maxim Integrated 1: $14.96 142In Stock	Mfr. Part No. DS3232S# Mouser Part No 700-DS3232S#	Analog Devices / Maxim Integrated	Real Time Clock Extremely Accurate I C RTC with Integrat	Datasheet	142In Stock	$14.96 $13.21 $12.30 $11.29 View $11.18 $10.52 $9.89 Quote	Min.: 1 Mult.: 1	I2C	YY-MM-DD-dd	HH:MM:SS:hh (12 hr, 24 hr)	SO-20	Backup Switching	2.3 V	5.5 V	0 C	+ 70 C	DS3232S	SMD/SMT		Tube
Real Time Clock Extremely Accurate I C RTC with Integrat DS3232SN# Analog Devices / Maxim Integrated 1: $17.17 211In Stock	Mfr. Part No. DS3232SN# Mouser Part No 700-DS3232SN#	Analog Devices / Maxim Integrated	Real Time Clock Extremely Accurate I C RTC with Integrat	Datasheet	211In Stock	$17.17 $13.60 $12.42 $11.66 View $11.25 $10.90 $10.62 Quote	Min.: 1 Mult.: 1	I2C	YY-MM-DD-dd	HH:MM:SS:hh (12 hr, 24 hr)	SO-20	Backup Switching	2.3 V	5.5 V	- 40 C	+ 85 C	DS3232SN	SMD/SMT		Tube
Real Time Clock Extremely Accurate SPI Bus RTC with Inte DS3234S# Analog Devices / Maxim Integrated 1: $16.87 550In Stock	Mfr. Part No. DS3234S# Mouser Part No 700-DS3234S#	Analog Devices / Maxim Integrated	Real Time Clock Extremely Accurate SPI Bus RTC with Inte	Datasheet	550In Stock	$16.87 $13.21 $12.30 $11.29 View $11.18 $10.52 $10.28 Quote	Min.: 1 Mult.: 1	SPI	YY-MM-DD-dd	HH:MM:SS:hh (12 hr, 24 hr)	SO-20	Backup Switching	2 V	5.5 V	0 C	+ 70 C	DS3234S	SMD/SMT		Tube
Real Time Clock Integrated RC17 w/ NDK Crystal MAX31329NELB+ Analog Devices / Maxim Integrated 1: $5.13 2,705In Stock	Mfr. Part No. MAX31329NELB+ Mouser Part No 700-MAX31329NELB+	Analog Devices / Maxim Integrated	Real Time Clock Integrated RC17 w/ NDK Crystal Learn More about Analog Devices / Maxim Integrated maxim max31329 i2c rtc	Datasheet	2,705In Stock	$5.13 $5.03 $5.02 $2.76 Quote Quote	Min.: 1 Mult.: 1	I2C	YY-MM-DD-dd	HH:MM:SS:hh (12 hr, 24 hr)	LGA-10	Backup Switching	1.6 V	5.5 V	- 40 C	+ 85 C		SMD/SMT		Tray
Real Time Clock RTC with power management MAX31341CETB+T Analog Devices / Maxim Integrated 1: $2.99 6,441In Stock	Mfr. Part No. MAX31341CETB+T Mouser Part No 700-MAX31341CETB+T	Analog Devices / Maxim Integrated	Real Time Clock RTC with power management	Datasheet	6,441In Stock	Cut Tape $2.99 $2.24 $2.04 $1.83 Reel $1.57 View $1.73 $1.67 $1.64 $1.53 MouseReel Available	Min.: 1 Mult.: 1 : 2,500	Serial 2-Wire, I2C	YY-MM-DD-dd	HH:MM:SS (24 hr)	TDFN-10	Backup Switching	1.6 V	3.6 V	- 40 C	+ 85 C		SMD/SMT		Reel, Cut Tape, MouseReel
Real Time Clock 5ppm, I2C Real-Time Clock with Integrated MEMS Oscillator MAX31343ETAY+ Analog Devices / Maxim Integrated 1: $7.20 471In Stock	Mfr. Part No. MAX31343ETAY+ Mouser Part No 700-MAX31343ETAY+	Analog Devices / Maxim Integrated	Real Time Clock 5ppm, I2C Real-Time Clock with Integrated MEMS Oscillator	Datasheet	471In Stock	$7.20 $5.53 $5.12 $4.74 View $4.63 $4.12 Quote	Min.: 1 Mult.: 1	Serial 2-Wire, I2C	YY-MM-DD-dd	HH:MM:SS (24 hr)	TDFN-8	Backup Switching	1.6 V	5.5 V	- 40 C	+ 85 C		SMD/SMT		Tray
Real Time Clock Real-Time Clock SPI interface with power management, -40 to +85 C, 16-pin QFN AM1815AQ Ambiq 1: $0.75 106In Stock 3,000Expected 08/01/2027	Mfr. Part No. AM1815AQ Mouser Part No 222-AM1815AQ	Ambiq	Real Time Clock Real-Time Clock SPI interface with power management, -40 to +85 C, 16-pin QFN	Datasheet	106In Stock 3,000Expected 08/01/2027	$0.75 $0.744	Min.: 1 Mult.: 1										Artasie SPI w/ Power Management
Real Time Clock 32.768 kHz +/-20 PPM I2C -40/+85C RV-4162-C7-32.768kHz-20PPM-TA-QC Micro Crystal 1: $2.61 470In Stock 33,000Expected 13/11/2026	Mfr. Part No. RV-4162-C7-32.768kHz-20PPM-TA-QC Mouser Part No 428-200007-MG01	Micro Crystal	Real Time Clock 32.768 kHz +/-20 PPM I2C -40/+85C Learn More about Micro Crystal real time clock modules	Datasheet	470In Stock 33,000Expected 13/11/2026	Cut Tape $2.61 $1.94 $1.77 $1.59 Reel $1.39 View $1.50 $1.46 $1.36 $1.33 MouseReel Available	Min.: 1 Mult.: 1 : 1,000	Serial 2-Wire, I2C	YY-MM-DD-dd	HH:MM:SS:hh (12 hr, 24 hr)		No Backup Switching	1 V	4.4 V	- 40 C	+ 85 C	RV-4162-C7	SMD/SMT		Reel, Cut Tape, MouseReel
Real Time Clock 32.768 kHz +/-3 PPM I2C -40/+85C RV-8803-C7-32.768KHZ-3PPM-TA-QC Micro Crystal 1: $2.93 63,660On Order	Mfr. Part No. RV-8803-C7-32.768KHZ-3PPM-TA-QC Mouser Part No 428-202677-MG01	Micro Crystal	Real Time Clock 32.768 kHz +/-3 PPM I2C -40/+85C Learn More about Micro Crystal real time clock modules	Datasheet	63,660On Order On Order Ship Dates Mfr. No: RV-8803-C7-32.768KHZ-3PPM-TA-QC Stock: 0 On Order: 19,660 Expected 11/11/2026 44,000 Expected 30/04/2027 Factory Lead Time: 34 Weeks	Cut Tape $2.93 $2.39 $2.25 $2.03 View Reel $1.54 $1.60 $1.57 $1.54 MouseReel Available	Min.: 1 Mult.: 1 : 1,000	Serial 2-Wire, I2C	YY-MM-DD-dd	HH:MM:SS:hh (12 hr, 24 hr)		No Backup Switching	1.5 V	5.5 V	- 40 C	+ 85 C	RV-8803-C7	SMD/SMT		Reel, Cut Tape, MouseReel
Real Time Clock 32.768kHz SPI Time Acc. 6ppm AEC RV-3149-C3 32.768kHz OPTION A TB QA Micro Crystal 1: $4.66 52In Stock 1,000Expected 18/06/2027	Mfr. Part No. RV-3149-C3 32.768kHz OPTION A TB QA Mouser Part No 428-203641-MG01	Micro Crystal	Real Time Clock 32.768kHz SPI Time Acc. 6ppm AEC Learn More about Micro Crystal real time clock modules	Datasheet	52In Stock 1,000Expected 18/06/2027	Cut Tape $4.66 $3.54 $3.26 $2.95 View Reel $2.69 $2.80 $2.77 $2.69 MouseReel Available	Min.: 1 Mult.: 1 : 1,000	SPI	YY-MM-DD-dd	HH:MM:SS (24 hr)		Backup Switching	1.3 V	5.5 V	- 40 C	+ 125 C	RV-3149	SMD/SMT		Reel, Cut Tape, MouseReel
Real Time Clock 32.768kHz I2C 2.5ppm 3.2x1.5x0.8mm Temperature Sensor & Real Time Clock RV-3032-C7 32.768kHz-2.5PPM-TA-QC Micro Crystal 1: $3.31 252In Stock 36,000Expected 18/12/2026	Mfr. Part No. RV-3032-C7 32.768kHz-2.5PPM-TA-QC Mouser Part No 428-203803-MG01	Micro Crystal	Real Time Clock 32.768kHz I2C 2.5ppm 3.2x1.5x0.8mm Temperature Sensor & Real Time Clock Learn More about Micro Crystal rv 3032 c7 rtc module	Datasheet	252In Stock 36,000Expected 18/12/2026	Cut Tape $3.31 $2.48 $2.28 $2.05 Reel $1.87 View $1.94 $1.90 $1.84 $1.67 MouseReel Available	Min.: 1 Mult.: 1 : 1,000	Serial 2-Wire, I2C	YY-MM-DD-dd	HH:MM:SS:hh (12 hr, 24 hr)		Backup Switching	1.3 V	5.5 V	- 40 C	+ 105 C	RV-3032-C7	SMD/SMT		Reel, Cut Tape, MouseReel
Real Time Clock 32.768kHz SPI 20ppm 2.0x1.2x0.7 AEC-Q200 RV-8063-C8 32.768kHz-20PPM-TA-QA Micro Crystal 1: $1.58 26In Stock 1,000Expected 05/02/2027	Mfr. Part No. RV-8063-C8 32.768kHz-20PPM-TA-QA Mouser Part No 428-204290-MC01	Micro Crystal	Real Time Clock 32.768kHz SPI 20ppm 2.0x1.2x0.7 AEC-Q200 Learn More about Micro Crystal rv 8063 c8 rtc modules	Datasheet	26In Stock 1,000Expected 05/02/2027	Cut Tape $1.58 $1.16 $1.05 $0.924 Reel $0.833 View $0.868 $0.845 $0.793 $0.778 MouseReel Available	Min.: 1 Mult.: 1 : 1,000	Serial 3-Wire, SPI	YY-MM-DD-dd	HH:MM:SS:hh (12 hr, 24 hr)	SON-8		900 mV	5.5 V	- 40 C	+ 85 C	RV-8063-C8	SMD/SMT		Reel, Cut Tape, MouseReel
Real Time Clock 128 NVRAM Serial RTC 3.0 to 3.6 Vcc M41ST87WSS6F STMicroelectronics 1: $7.77 23In Stock 1,350On Order	Mfr. Part No. M41ST87WSS6F Mouser Part No 511-M41ST87WSS6F	STMicroelectronics	Real Time Clock 128 NVRAM Serial RTC 3.0 to 3.6 Vcc	Datasheet	23In Stock 1,350On Order	Cut Tape $7.77 $6.00 $5.55 $5.07 Reel $4.35 View $4.76 $4.75 $4.13 MouseReel Available	Min.: 1 Mult.: 1 : 1,350	Serial 2-Wire, I2C	YY-MM-DD-dd	HH:MM:SS:hh (12 hr, 24 hr)	SSOP-20	Backup Switching	2.7 V	3.6 V	- 40 C	+ 85 C	M41ST87W	SMD/SMT		Reel, Cut Tape, MouseReel
Real Time Clock Serial 512 (64x8) M41T81M6F STMicroelectronics 1: $3.04 61In Stock 5,000Expected 23/08/2027	Mfr. Part No. M41T81M6F Mouser Part No 511-M41T81M6F	STMicroelectronics	Real Time Clock Serial 512 (64x8)	Datasheet	61In Stock 5,000Expected 23/08/2027	Cut Tape $3.04 $2.28 $2.09 $1.88 View Reel $1.49 $1.78 $1.69 $1.61 $1.49 MouseReel Available	Min.: 1 Mult.: 1 : 2,500	I2C	YY-MM-DD-dd	HH:MM:SS:hh (12 hr, 24 hr)	SOIC-8	Backup Switching	2 V	5.5 V	- 40 C	+ 85 C	M41T81	SMD/SMT		Reel, Cut Tape, MouseReel