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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 I C Serial Real-Time Clock DS1339U-3+T&R Analog Devices / Maxim Integrated 1: $3.87 423In Stock	Mfr. Part No. DS1339U-3+T&R Mouser Part No 700-DS1339U-3T&R	Analog Devices / Maxim Integrated	Real Time Clock I C Serial Real-Time Clock Learn More about Analog Devices / Maxim Integrated maxim hvac solutions	Datasheet	423In Stock	Cut Tape $3.87 $3.79 $3.77 $3.77 MouseReel Available	Min.: 1 Mult.: 1	Serial 2-Wire, 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	DS1339U	SMD/SMT	Reel, Cut Tape, MouseReel
Real Time Clock AECQ-200 IC RTC Ultra small Low Power CLK/CALENDAR I2C MODULE 3215 AB-RTC-XLA-32.768KHZ-2-T1 ABRACON 1: $3.07 900In Stock New Product	Mfr. Part No. AB-RTC-XLA-32.768KHZ-2-T1 Mouser Part No 815-TCXLA32768KHZ2T1 New Product	ABRACON	Real Time Clock AECQ-200 IC RTC Ultra small Low Power CLK/CALENDAR I2C MODULE 3215 Learn More about ABRACON ab rtc xl low power rtcs	Datasheet	900In Stock	Cut Tape $3.07 $2.30 $2.11 $1.90 Reel $1.65 View $1.79 $1.73 $1.62 $1.59 MouseReel Available	Min.: 1 Mult.: 1 : 1,000	I2C		HH:MM:SS (24 hr)	SON-8	No Backup Switching	900 mV	5.5 V	- 40 C	+ 85 C	AB-RTC-XLA	SMD/SMT	Reel, Cut Tape, MouseReel
Real Time Clock Low Power Consumption I C RTC 3.2 x 2.5 x 1.0 mm (lwh) ECS-RTC-3225-5609-TR ECS 1: $5.07 11,700In Stock	Mfr. Part No. ECS-RTC-3225-5609-TR Mouser Part No 520-ECSRTC32255609TR	ECS	Real Time Clock Low Power Consumption I C RTC 3.2 x 2.5 x 1.0 mm (lwh) Learn More about ECS rtc real time clock module	Datasheet	11,700In Stock	Cut Tape $5.07 $3.86 $3.56 $3.23 Reel $2.83 View $3.07 $2.91 $2.79 $2.73 MouseReel Available	Min.: 1 Mult.: 1 : 1,000	I2C	YY-MM-DD	HH:MM:SS (24 hr)		Backup Switching	2.5 V	5 V	- 20 C	+ 80 C		SMD/SMT	Reel, Cut Tape, MouseReel
Real Time Clock RX8130CE:B6 REAL TIME CLOCK +/-23PPM 2K TR RX8130CE B6 Epson Timing 1: $1.40 91,582In Stock	Mfr. Part No. RX8130CE B6 Mouser Part No 732-RX8130CEB6	Epson Timing	Real Time Clock RX8130CE:B6 REAL TIME CLOCK +/-23PPM 2K TR	Datasheet	91,582In Stock	Cut Tape $1.40 $1.00 $0.905 $0.80 Reel $0.658 View $0.749 $0.719 $0.702 $0.651 MouseReel Available	Min.: 1 Mult.: 1 : 2,000	I2C	YY-MM-DD-dd	HH:MM:SS (24 hr)		Backup Switching	1.25 V	5.5 V	- 40 C	+ 85 C	RX8130CE	SMD/SMT	Reel, Cut Tape, MouseReel
Real Time Clock 32.768kHz SPI Time Acc. 25ppm RV-3149-C3 32.768kHz OPTION B TA QC Micro Crystal 1: $4.65 717In Stock	Mfr. Part No. RV-3149-C3 32.768kHz OPTION B TA QC Mouser Part No 428-203605-MG01	Micro Crystal	Real Time Clock 32.768kHz SPI Time Acc. 25ppm Learn More about Micro Crystal real time clock modules	Datasheet	717In Stock	Cut Tape $4.65 $3.49 $3.21 $2.88 Reel $2.52 View $2.72 $2.66 $2.45 $2.40 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	+ 85 C	RV-3149	SMD/SMT	Reel, Cut Tape, MouseReel
Real Time Clock RX8010SJ Epson Timing 1: $3.47 54,168In Stock	Mfr. Part No. RX8010SJ Mouser Part No 732-RX8010SJ	Epson Timing	Real Time Clock	Datasheet	54,168In Stock	$3.47 $2.58 $2.36 $2.11 View $2.00 $1.95 $1.85 $1.80 $1.76	Min.: 1 Mult.: 1	Serial 2-Wire, I2C	YY-MM-DD-dd	HH:MM:SS (24 hr)		No Backup Switching	1.6 V	5.5 V	- 40 C	+ 85 C	RX8010SJ	SMD/SMT	Bulk
Real Time Clock REAL TIME CLK W/ ALARM & TIMR FUNCTNS ISL12058IRTZ Renesas / Intersil 1: $2.83 953In Stock	Mfr. Part No. ISL12058IRTZ Mouser Part No 968-ISL12058IRTZ	Renesas / Intersil	Real Time Clock REAL TIME CLK W/ ALARM & TIMR FUNCTNS	Datasheet	953In Stock	$2.83 $2.11 $1.93 $1.72 View $1.62 $1.59 $1.52 $1.48 $1.44	Min.: 1 Mult.: 1	I2C	YY-MM-DD-dd	HH:MM:SS (24 hr)	TDFN-8	No Backup Switching	1.8 V	3.6 V	- 40 C	+ 85 C	ISL12058	SMD/SMT	Tube
Real Time Clock Real-time Clock Mod I2C Bus PT7C4307WEX Diodes Incorporated 1: $1.31 4,411In Stock Factory Special Order	Mfr. Part No. PT7C4307WEX Mouser Part No 729-PT7C4307WEX Factory Special Order	Diodes Incorporated	Real Time Clock Real-time Clock Mod I2C Bus Learn More about Diodes Incorporated diodes timing solutions	Datasheet	4,411In Stock	Cut Tape $1.31 $0.943 $0.854 $0.754 Reel $0.629 View $0.707 $0.679 $0.648 $0.614 MouseReel Available	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 V	5.5 V	- 40 C	+ 85 C		SMD/SMT	Reel, Cut Tape, MouseReel
Real Time Clock w/242x8 NVSRAM Alarm Wake-up BQ3285ES Texas Instruments 1: $18.28 85In Stock End of Life	Mfr. Part No. BQ3285ES Mouser Part No 595-BQ3285ES End of Life	Texas Instruments	Real Time Clock w/242x8 NVSRAM Alarm Wake-up	Datasheet	85In Stock	$18.28 $14.50 $13.54 $12.50 View $11.92 $11.70 Quote	Min.: 1 Mult.: 1	Multiplexed	YY-MM-DD-dd	HH:MM:SS (24 hr)	SOIC-24		4.5 V	5.5 V	0 C	+ 70 C	BQ3285E	SMD/SMT	Tube
Real Time Clock 256k Nonvolatile, Y2K-Compliant Timekeep DS1554P-70+ Analog Devices / Maxim Integrated 1: $34.18 37In Stock	Mfr. Part No. DS1554P-70+ Mouser Part No 700-DS1554P-70	Analog Devices / Maxim Integrated	Real Time Clock 256k Nonvolatile, Y2K-Compliant Timekeep	Datasheet	37In Stock	$34.18 $33.42 $33.32	Min.: 1 Mult.: 1	Parallel	YY-MM-DD-dd	HH:MM:SS (24 hr)	PowerCap Module-34	Backup Switching	4.5 V	5.5 V	0 C	+ 70 C	DS1554P	SMD/SMT	Tray
Real Time Clock 1M, Nonvolatile, Y2K-Compliant Timekeepi DS1556W-120IND+ Analog Devices / Maxim Integrated 1: $78.08 14In Stock	Mfr. Part No. DS1556W-120IND+ Mouser Part No 700-DS1556W-120IND	Analog Devices / Maxim Integrated	Real Time Clock 1M, Nonvolatile, Y2K-Compliant Timekeepi	Datasheet	14In Stock	$78.08 $65.03 $61.21 $57.84 View Quote	Min.: 1 Mult.: 1	Parallel	YY-MM-DD-dd	HH:MM:SS (24 hr)	EDIP-32	Integrated Battery	2.97 V	3.63 V	- 40 C	+ 85 C	DS1556W	Through Hole	Tube
Real Time Clock 3V/5V Real-Time Clocks DS17487-5+ Analog Devices / Maxim Integrated 1: $36.46 49In Stock	Mfr. Part No. DS17487-5+ Mouser Part No 700-DS17487-5	Analog Devices / Maxim Integrated	Real Time Clock 3V/5V Real-Time Clocks	Datasheet	49In Stock	$36.46 $29.53 $27.76 $26.62 View $24.97 $24.96 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	DS17487	Through Hole	Tube
Real Time Clock 3V/5V Real-Time Clocks DS17885S-5+ Analog Devices / Maxim Integrated 1: $37.44 28In Stock	Mfr. Part No. DS17885S-5+ Mouser Part No 700-DS17885S-5	Analog Devices / Maxim Integrated	Real Time Clock 3V/5V Real-Time Clocks	Datasheet	28In Stock	$37.44 $30.31 $28.53 $26.75 View $25.63 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	DS17885S	SMD/SMT	Tube
Real Time Clock I C RTC with Trickle Charger DS1340U-3+ Analog Devices / Maxim Integrated 1: $3.76 204In Stock	Mfr. Part No. DS1340U-3+ Mouser Part No 700-DS1340U-3	Analog Devices / Maxim Integrated	Real Time Clock I C RTC with Trickle Charger Learn More about Analog Devices / Maxim Integrated maximds1343	Datasheet	204In Stock	$3.76 $3.68	Min.: 1 Mult.: 1	Serial 2-Wire, I2C	YY-MM-DD-dd	HH:MM:SS (24 hr)	uSOP-8	Backup Switching	2.7 V	3.3 V	- 40 C	+ 85 C	DS1340U	SMD/SMT	Tube
Real Time Clock 1M, Nonvolatile, Y2K-Compliant Timekeepi DS1556P-70+ Analog Devices / Maxim Integrated 1: $51.25 20In Stock	Mfr. Part No. DS1556P-70+ Mouser Part No 700-DS1556P-70	Analog Devices / Maxim Integrated	Real Time Clock 1M, Nonvolatile, Y2K-Compliant Timekeepi	Datasheet	20In Stock	$51.25 $50.11 $49.97	Min.: 1 Mult.: 1	Parallel	YY-MM-DD-dd	HH:MM:SS (24 hr)		Backup Switching	4.5 V	5.5 V	0 C	+ 70 C	DS1556P	SMD/SMT	Tray
Real Time Clock 3V/5V Real-Time Clocks DS17287-3+ Analog Devices / Maxim Integrated 1: $33.59 54In Stock	Mfr. Part No. DS17287-3+ Mouser Part No 700-DS17287-3	Analog Devices / Maxim Integrated	Real Time Clock 3V/5V Real-Time Clocks	Datasheet	54In Stock	$33.59 $26.99 $25.59 $24.13 View $22.99 $22.98 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	0 C	+ 70 C	DS17287	Through Hole	Tube
Real Time Clock I C RTC with Trickle Charger DS1340U-18+ Analog Devices / Maxim Integrated 1: $7.68 259In Stock	Mfr. Part No. DS1340U-18+ Mouser Part No 700-DS1340U-18	Analog Devices / Maxim Integrated	Real Time Clock I C RTC with Trickle Charger Learn More about Analog Devices / Maxim Integrated maximds1343	Datasheet	259In Stock	$7.68 $5.92 $5.30 $4.99 View $4.62 $4.48 $4.26	Min.: 1 Mult.: 1	Serial 2-Wire, I2C	YY-MM-DD-dd	HH:MM:SS (24 hr)	uSOP-8	Backup Switching	1.71 V	1.89 V	- 40 C	+ 85 C	DS1340U	SMD/SMT	Tube
Real Time Clock Y2K-Compliant, Nonvolatile Timekeeping R DS1746W-120IND+ Analog Devices / Maxim Integrated 1: $76.35 23In Stock	Mfr. Part No. DS1746W-120IND+ Mouser Part No 700-DS1746W-120IND	Analog Devices / Maxim Integrated	Real Time Clock Y2K-Compliant, Nonvolatile Timekeeping R	Datasheet	23In Stock	$76.35 $63.07 $59.57 $56.70	Min.: 1 Mult.: 1	Parallel	YY-MM-DD-dd	HH:MM:SS (24 hr)	EDIP-32	Integrated Battery	2.97 V	3.63 V	- 40 C	+ 85 C	DS1746W	Through Hole	Tube
Real Time Clock Low-Current SPI/3-Wire RTCs DS1343E-33+ Analog Devices / Maxim Integrated 1: $8.18 155In Stock	Mfr. Part No. DS1343E-33+ Mouser Part No 700-DS1343E-33+	Analog Devices / Maxim Integrated	Real Time Clock Low-Current SPI/3-Wire RTCs Learn More about Analog Devices / Maxim Integrated maximds1343	Datasheet	155In Stock	$8.18 $6.30 $5.83 $5.31 View $4.92 $4.91 $4.76 $4.54	Min.: 1 Mult.: 1	Serial 3-Wire, SPI	YY-MM-DD-dd	HH:MM:SS:hh (12 hr, 24 hr)	TSSOP-20	Backup Switching	3 V	5.5 V	- 40 C	+ 85 C	DS1343E	SMD/SMT	Tube
Real Time Clock 1M, Nonvolatile, Y2K-Compliant Timekeepi DS1556-70+ Analog Devices / Maxim Integrated 1: $82.68 16In Stock	Mfr. Part No. DS1556-70+ Mouser Part No 700-DS1556-70	Analog Devices / Maxim Integrated	Real Time Clock 1M, Nonvolatile, Y2K-Compliant Timekeepi	Datasheet	16In Stock	$82.68 $68.85 $64.81 $61.23 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	0 C	+ 70 C	DS1556	Through Hole	Tube
Real Time Clock Y2K-Compliant, Nonvolatile Timekeeping R DS1746WP-120IND+ Analog Devices / Maxim Integrated 1: $53.31 20In Stock	Mfr. Part No. DS1746WP-120IND+ Mouser Part No 700-DS1746WP-120IND	Analog Devices / Maxim Integrated	Real Time Clock Y2K-Compliant, Nonvolatile Timekeeping R	Datasheet	20In Stock	$53.31 $52.13 $51.96	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	- 40 C	+ 85 C	DS1746WP	SMD/SMT	Tray
Real Time Clock Y2K-Compliant, Nonvolatile Timekeeping R DS1747W-120+ Analog Devices / Maxim Integrated 1: $82.41 21In Stock	Mfr. Part No. DS1747W-120+ Mouser Part No 700-DS1747W-120	Analog Devices / Maxim Integrated	Real Time Clock Y2K-Compliant, Nonvolatile Timekeeping R	Datasheet	21In Stock	$82.41 $68.62 $64.60 $61.02 Quote Quote	Min.: 1 Mult.: 1	Parallel	YY-MM-DD-dd	HH:MM:SS (24 hr)	EDIP-32	Integrated Battery	2.97 V	3.63 V	0 C	+ 70 C	DS1747W	Through Hole	Tube
Real Time Clock AECQ-200 IC RTC Ultra small Low Power CLK/CALENDAR I2C MODULE 2012 AB-RTC-XPA-32.768KHZ-2-T1 ABRACON 1: $2.91 800In Stock New Product	Mfr. Part No. AB-RTC-XPA-32.768KHZ-2-T1 Mouser Part No 815-AB-XPA-32768K2T1 New Product	ABRACON	Real Time Clock AECQ-200 IC RTC Ultra small Low Power CLK/CALENDAR I2C MODULE 2012 Learn More about ABRACON ultra low power rtc modules	Datasheet	800In Stock	Cut Tape $2.91 $2.17 $1.98 $1.78 Reel $1.56 View $1.67 $1.64 $1.51 $1.48 MouseReel Available	Min.: 1 Mult.: 1 : 1,000	I2C			DFN-8	Integrated Battery	900 mV	5.5 V	- 40 C	+ 85 C	AB-RTC-XPA-32.768kHz-2	SMD/SMT	Reel, Cut Tape, MouseReel
Real Time Clock IC RTC Ultra small Low Power CLK/CALENDAR I2C MODULE 3215 AB-RTC-XL-32.768KHZ-2-T1 ABRACON 1: $2.92 852In Stock New Product	Mfr. Part No. AB-RTC-XL-32.768KHZ-2-T1 Mouser Part No 815-RTCXL32768KHZ2T1 New Product	ABRACON	Real Time Clock IC RTC Ultra small Low Power CLK/CALENDAR I2C MODULE 3215 Learn More about ABRACON ab rtc xl low power rtcs	Datasheet	852In Stock	Cut Tape $2.92 $2.17 $1.99 $1.79 Reel $1.59 View $1.69 $1.65 $1.54 $1.51 MouseReel Available	Min.: 1 Mult.: 1 : 1,000	I2C		HH:MM:SS (24 hr)	SON-8	No Backup Switching	900 mV	5.5 V	- 40 C	+ 85 C	AB-RTC-XL	SMD/SMT	Reel, Cut Tape, MouseReel
Real Time Clock IC RTC Ultra small Low Power CLK/CALENDAR I2C MODULE 2012 AB-RTC-XP-32.768KHZ-2-T1 ABRACON 1: $2.80 800In Stock New Product	Mfr. Part No. AB-RTC-XP-32.768KHZ-2-T1 Mouser Part No 815-XP32762T1 New Product	ABRACON	Real Time Clock IC RTC Ultra small Low Power CLK/CALENDAR I2C MODULE 2012 Learn More about ABRACON ultra low power rtc modules	Datasheet	800In Stock	Cut Tape $2.80 $2.09 $1.91 $1.71 Reel $1.50 View $1.62 $1.58 $1.45 $1.43 MouseReel Available	Min.: 1 Mult.: 1 : 1,000	I2C			DFN-8	Integrated Battery	900 mV	5.5 V	- 40 C	+ 85 C	AB-RTC-XP-32.768kHz-2	SMD/SMT	Reel, Cut Tape, MouseReel