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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 Portable System Controller DS1670E+ Analog Devices / Maxim Integrated 1: $15.72 90In Stock	Mfr. Part No. DS1670E+ Mouser Part No 700-DS1670E	Analog Devices / Maxim Integrated	Real Time Clock Portable System Controller	Datasheet	90In Stock	$15.72 $12.31 $11.46 $10.40 View $10.28 $9.74 $9.52 Quote	Min.: 1 Mult.: 1	Serial 3-Wire	YY-MM-DD-dd	HH:MM:SS (24 hr)	TSSOP-20	Backup Switching	2.97 V	3.63 V	0 C	+ 70 C	DS1670E	SMD/SMT	Tube
Real Time Clock I C 32-Bit Binary Counter RTC DS1672S-33+ Analog Devices / Maxim Integrated 1: $5.90 53In Stock	Mfr. Part No. DS1672S-33+ Mouser Part No 700-DS1672S-33	Analog Devices / Maxim Integrated	Real Time Clock I C 32-Bit Binary Counter RTC	Datasheet	53In Stock	$5.90 $4.50 $4.14 $3.51 View $3.45 $3.41 $3.37	Min.: 1 Mult.: 1	Serial 2-Wire, I2C	Binary	Binary	SOIC-8	Backup Switching	2.97 V	3.63 V	- 40 C	+ 85 C	DS1672S	SMD/SMT	Tube
Real Time Clock Portable System Controller DS1673E-3+ Analog Devices / Maxim Integrated 1: $16.34 69In Stock	Mfr. Part No. DS1673E-3+ Mouser Part No 700-DS1673E-3	Analog Devices / Maxim Integrated	Real Time Clock Portable System Controller	Datasheet	69In Stock	$16.34 $12.94 $11.32 $10.94 View $10.63 $10.32 $10.09 Quote	Min.: 1 Mult.: 1	Serial 3-Wire	Binary	Binary	TSSOP-20	Backup Switching	2.7 V	3.3 V	0 C	+ 70 C	DS1673E	SMD/SMT	Tube
Real Time Clock Portable System Controller DS1673E-5+ Analog Devices / Maxim Integrated 1: $14.93 9In Stock	Mfr. Part No. DS1673E-5+ Mouser Part No 700-DS1673E-5	Analog Devices / Maxim Integrated	Real Time Clock Portable System Controller	Datasheet	9In Stock	$14.93 $11.69 $10.28 $9.95 View $9.90 $9.32 $9.18 Quote	Min.: 1 Mult.: 1	Serial 3-Wire	YY-MM-DD-dd	HH:MM:SS (24 hr)	TSSOP-20	Backup Switching	4.5 V	5.5 V	0 C	+ 70 C	DS1673E	SMD/SMT	Tube
Real Time Clock Total-Elapsed-Time Recorder with Alarm DS1682S+ Analog Devices / Maxim Integrated 1: $9.74 6In Stock	Mfr. Part No. DS1682S+ Mouser Part No 700-DS1682S	Analog Devices / Maxim Integrated	Real Time Clock Total-Elapsed-Time Recorder with Alarm	Datasheet	6In Stock	$9.74 $7.57 $7.03 $6.43 View $6.10 $5.98 $5.84 Quote	Min.: 1 Mult.: 1	I2C	Binary	Binary	SOIC-8	No Backup Switching	2.5 V	5.5 V	- 40 C	+ 85 C	DS1682	SMD/SMT	Tube
Real Time Clock 3V/5V Real-Time Clock DS1685E-3+ Analog Devices / Maxim Integrated 1: $12.44 71In Stock	Mfr. Part No. DS1685E-3+ Mouser Part No 700-DS1685E-3	Analog Devices / Maxim Integrated	Real Time Clock 3V/5V Real-Time Clock	Datasheet	71In Stock	$12.44 $9.74 $9.07 $8.32 View $8.24 $7.76 $7.58 Quote	Min.: 1 Mult.: 1	Multiplexed	YY-MM-DD-dd	HH:MM:SS:hh (12 hr, 24 hr)	TSSOP-24	Backup Switching	2.7 V	3.7 V	0 C	+ 70 C	DS1685E	SMD/SMT	Tube
Real Time Clock 3V/5V Real-Time Clock DS1685EN-3+ Analog Devices / Maxim Integrated 1: $14.22 18In Stock	Mfr. Part No. DS1685EN-3+ Mouser Part No 700-DS1685EN-3	Analog Devices / Maxim Integrated	Real Time Clock 3V/5V Real-Time Clock	Datasheet	18In Stock	$14.22 $11.14 $10.37 $9.51 View $9.42 $8.86 $8.66 Quote	Min.: 1 Mult.: 1	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	Tube
Real Time Clock 3V/5V Real-Time Clock DS1685SN-5+ Analog Devices / Maxim Integrated 1: $15.16 24In Stock	Mfr. Part No. DS1685SN-5+ Mouser Part No 700-DS1685SN-5	Analog Devices / Maxim Integrated	Real Time Clock 3V/5V Real-Time Clock	Datasheet	24In Stock	$15.16 $11.87 $10.57 $9.87 View $9.72 $9.21 $9.03 Quote	Min.: 1 Mult.: 1	Multiplexed	YY-MM-DD-dd	HH:MM:SS:hh (12 hr, 24 hr)	SOIC-24	Backup Switching	4.5 V	5.5 V	- 40 C	+ 85 C	DS1685SN	SMD/SMT	Tube
Real Time Clock 3V/5V Real-Time Clock DS1687-3IND+ Analog Devices / Maxim Integrated 1: $35.09 30In Stock	Mfr. Part No. DS1687-3IND+ Mouser Part No 700-DS1687-3IND	Analog Devices / Maxim Integrated	Real Time Clock 3V/5V Real-Time Clock	Datasheet	30In Stock	$35.09 $27.91 $26.43 $24.57 View $23.72 $23.03 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	- 40 C	+ 85 C	DS1687	Through Hole	Tube
Real Time Clock 3V/5V Real-Time Clock DS1687-5+ Analog Devices / Maxim Integrated 1: $29.53 63In Stock	Mfr. Part No. DS1687-5+ Mouser Part No 700-DS1687-5	Analog Devices / Maxim Integrated	Real Time Clock 3V/5V Real-Time Clock	Datasheet	63In Stock	$29.53 $23.61 $22.12 $20.49 View $19.72 $19.25 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	DS1687	Through Hole	Tube
Real Time Clock 3V/5V Real-Time Clocks DS17285SN-3+ Analog Devices / Maxim Integrated 1: $12.60 10In Stock	Mfr. Part No. DS17285SN-3+ Mouser Part No 700-DS17285SN-3	Analog Devices / Maxim Integrated	Real Time Clock 3V/5V Real-Time Clocks	Datasheet	10In Stock	$12.60 $12.33 $12.06 $11.82 View $11.64 $11.46 $11.29 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	- 40 C	+ 85 C	DS17285SN	SMD/SMT	Tube
Real Time Clock 3V/5V Real-Time Clocks DS17287-5+ Analog Devices / Maxim Integrated 1: $34.02 1In Stock	Mfr. Part No. DS17287-5+ Mouser Part No 700-DS17287-5	Analog Devices / Maxim Integrated	Real Time Clock 3V/5V Real-Time Clocks	Datasheet	1In Stock	$34.02 $27.03 $25.56 $23.76 View $22.93 $22.65 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	DS17287	Through Hole	Tube
Real Time Clock Y2K-Compliant, Nonvolatile Timekeeping R DS1744W-120+ Analog Devices / Maxim Integrated 1: $62.46 15In Stock	Mfr. Part No. DS1744W-120+ Mouser Part No 700-DS1744W-120	Analog Devices / Maxim Integrated	Real Time Clock Y2K-Compliant, Nonvolatile Timekeeping R	Datasheet	15In Stock	$62.46 $51.59 $48.86 $48.25 View Quote	Min.: 1 Mult.: 1	Parallel	YY-MM-DD-dd	HH:MM:SS (24 hr)	EDIP-28	Integrated Battery	2.97 V	3.63 V	0 C	+ 70 C	DS1744W	Through Hole	Tube
Real Time Clock Y2K-Compliant, Nonvolatile Timekeeping R DS1744W-120IND+ Analog Devices / Maxim Integrated 1: $65.63 15In Stock	Mfr. Part No. DS1744W-120IND+ Mouser Part No 700-DS1744W-120IND	Analog Devices / Maxim Integrated	Real Time Clock Y2K-Compliant, Nonvolatile Timekeeping R	Datasheet	15In Stock	$65.63 $54.21 $51.34 $50.70 View Quote	Min.: 1 Mult.: 1	Parallel	YY-MM-DD-dd	HH:MM:SS (24 hr)	EDIP-28	Integrated Battery	2.97 V	3.63 V	- 40 C	+ 85 C	DS1744W	Through Hole	Tube
Real Time Clock 3V/5V Real-Time Clocks DS17485S-5+ Analog Devices / Maxim Integrated 1: $14.28 5In Stock	Mfr. Part No. DS17485S-5+ Mouser Part No 700-DS17485S-5	Analog Devices / Maxim Integrated	Real Time Clock 3V/5V Real-Time Clocks	Datasheet	5In Stock	$14.28 $13.97 $13.67 $13.39 View $13.19 $12.99 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	0 C	+ 70 C	DS17485S	SMD/SMT	Tube
Real Time Clock 3V/5V Real-Time Clocks DS17887-3IND+ Analog Devices / Maxim Integrated 1: $41.79 1In Stock	Mfr. Part No. DS17887-3IND+ Mouser Part No 700-DS17887-3IND+	Analog Devices / Maxim Integrated	Real Time Clock 3V/5V Real-Time Clocks	Datasheet	1In Stock	$41.79 $40.87 $39.98 $39.18 View $38.58 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	- 40 C	+ 85 C	DS17887	Through Hole	Tube
Real Time Clock 1-Wire Time Chip With Interrupt DS2417P+ Analog Devices / Maxim Integrated 1: $4.92 235In Stock	Mfr. Part No. DS2417P+ Mouser Part No 700-DS2417P	Analog Devices / Maxim Integrated	Real Time Clock 1-Wire Time Chip With Interrupt	Datasheet	235In Stock	$4.92 $3.75 $3.46 $3.13 View $2.97 $2.88 $2.84 $2.81 Quote	Min.: 1 Mult.: 1	Serial 1-Wire	Binary	Binary	TSOC-6	Backup Switching	2.2 V	6 V	- 40 C	+ 85 C	DS2417P	SMD/SMT	Tube
Real Time Clock Extremely Accurate I C-Integrated RTC/TC DS3231SN#T&R Analog Devices / Maxim Integrated 1: $16.69 1In Stock	Mfr. Part No. DS3231SN#T&R Mouser Part No 700-DS3231SN#T&R-	Analog Devices / Maxim Integrated	Real Time Clock Extremely Accurate I C-Integrated RTC/TC Learn More about Analog Devices / Maxim Integrated maximds3231m	Datasheet	1In Stock	Cut Tape $16.69 $13.22 $12.35 $11.37 View $11.23 $10.87 $10.38 Quote MouseReel Available	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	Reel, Cut Tape, MouseReel
Real Time Clock Extremely Accurate I C RTC with Integrat DS3232S#T&R Analog Devices / Maxim Integrated 1: $15.17 13In Stock	Mfr. Part No. DS3232S#T&R Mouser Part No 700-DS3232S#T&R-	Analog Devices / Maxim Integrated	Real Time Clock Extremely Accurate I C RTC with Integrat	Datasheet	13In Stock	Cut Tape $15.17 $11.88 $11.06 $10.15 View $10.06 $10.04 $8.53 MouseReel Available	Min.: 1 Mult.: 1				SO-20				0 C	+ 70 C	DS3232S	SMD/SMT	Reel, Cut Tape, MouseReel
Real Time Clock 3.5ppm, I2C RTC with Integrated Crystal and Power Management MAX31328NELB+ Analog Devices / Maxim Integrated 1: $6.69 200In Stock	Mfr. Part No. MAX31328NELB+ Mouser Part No 700-MAX31328NELB+	Analog Devices / Maxim Integrated	Real Time Clock 3.5ppm, I2C RTC with Integrated Crystal and Power Management Learn More about Analog Devices / Maxim Integrated maxim max31328 i2c rtc	Datasheet	200In Stock	$6.69 $5.30 $4.90 $4.46 View $4.12 $4.02 $3.96 $3.43 Quote	Min.: 1 Mult.: 1	I2C	YY-MM-DD-dd	HH:MM:SS:hh (12 hr, 24 hr)	LGA-10	Backup Switching	2.3 V	5.5 V	- 40 C	+ 85 C	MAX31328	SMD/SMT	Tray
Real Time Clock ULTRA LO PWR CLK/CAL RTC IC PCF8563T/F4,118 NXP Semiconductors 1: $1.73 45In Stock	Mfr. Part No. PCF8563T/F4,118 Mouser Part No 771-PCF8563TD-T	NXP Semiconductors	Real Time Clock ULTRA LO PWR CLK/CAL RTC IC	Datasheet	45In Stock	Cut Tape $1.73 $1.27 $1.15 $1.03 $0.87 View $0.969 $0.932 $0.927 $0.851 MouseReel Available	Min.: 1 Mult.: 1	I2C	YY-MM-DD-dd	HH:MM:SS (24 hr)	SOIC-8	No Backup Switching	1.8 V	5.5 V	- 40 C	+ 85 C	PCF8563	SMD/SMT	Reel, Cut Tape, MouseReel
Real Time Clock Low Power High Stability +/-3 ppm -40 +85C I C Real Time Clock 3.2 x 2.5 mm ECS-RTC-3225-5699C3-TR ECS 1: $5.31 2,348In Stock	Mfr. Part No. ECS-RTC-3225-5699C3-TR Mouser Part No 520-RTC-32255699C3TR	ECS	Real Time Clock Low Power High Stability +/-3 ppm -40 +85C I C Real Time Clock 3.2 x 2.5 mm Learn More about ECS rtc3225 rtcsop8 rtcs	Datasheet	2,348In Stock	Cut Tape $5.31 $4.05 $3.73 $3.38 View Reel $3.00 $3.22 $3.16 $3.15 $3.00 MouseReel Available	Min.: 1 Mult.: 1 : 3,000	I2C	YY-MM-DD	HH:MM:SS (24 hr)		Backup Switching	2.5 V	5 V	- 40 C	+ 85 C		SMD/SMT	Reel, Cut Tape, MouseReel
Real Time Clock Low Power High Stability 5 ppm -40 +85 C I C Real Time Clock 3.2 x 2.5 mm ECS-RTC-3225-5699HS-TR ECS 1: $5.67 783In Stock	Mfr. Part No. ECS-RTC-3225-5699HS-TR Mouser Part No 520-RTC-32255699HSTR	ECS	Real Time Clock Low Power High Stability 5 ppm -40 +85 C I C Real Time Clock 3.2 x 2.5 mm Learn More about ECS rtc 3225 5699hs rtc	Datasheet	783In Stock	Cut Tape $5.67 $4.33 $3.99 $3.62 Reel $3.27 View $3.45 $3.37 $3.26 MouseReel Available	Min.: 1 Mult.: 1 : 1,000	I2C	YY-MM-DD	HH:MM:SS (24 hr)		Backup Switching	1.6 V	5 V	- 40 C	+ 85 C		SMD/SMT	Reel, Cut Tape, MouseReel
Real Time Clock RX-4045SA:AA0 PURE SN 5+/-5PPM 1K T/R RX-4045SAAA0 PURE SN Epson Timing 1: $4.70 1,506In Stock	Mfr. Part No. RX-4045SAAA0 PURE SN Mouser Part No 732-R4045SAAA0PURESN	Epson Timing	Real Time Clock RX-4045SA:AA0 PURE SN 5+/-5PPM 1K T/R Learn More about Epson Timing epson rx 4045sa realtime clock module	Datasheet	1,506In Stock	Cut Tape $4.70 $3.56 $3.27 $2.96 Reel $2.72 View $2.89 $2.83 $2.46	Min.: 1 Mult.: 1 : 1,000	Serial 4-Wire	YY-MM-DD-dd	HH:MM:SS (24 hr)		No Backup Switching	1.7 V	5.5 V	- 40 C	+ 85 C		SMD/SMT	Reel, Cut Tape
Real Time Clock RX-4045SA:AA3 PURE SN 5+/-5PPM 250 T/R RX-4045SAAA3 PURE SN Epson Timing 1: $9.57 703In Stock	Mfr. Part No. RX-4045SAAA3 PURE SN Mouser Part No 732-RX-4045SA:AA3S	Epson Timing	Real Time Clock RX-4045SA:AA3 PURE SN 5+/-5PPM 250 T/R	Datasheet	703In Stock	Cut Tape $9.57 $7.45 $6.34 $5.91 Reel $5.64 View $5.60 Quote MouseReel Available	Min.: 1 Mult.: 1 : 250	Serial 4-Wire	YY-MM-DD-dd	HH:MM:SS (24 hr)	SOP-14	No Backup Switching	1.7 V	5.5 V	- 40 C	+ 85 C	RX-4045SA	SMD/SMT	Reel, Cut Tape, MouseReel