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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.	RTC Bus Interface	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 RTC/Supervisor with Trickle Charger DS1388Z-33+T&R Analog Devices / Maxim Integrated 1: $8.62 2,973In Stock	Mfr. Part No. DS1388Z-33+T&R Mouser Part No 700-DS1388Z-33T&R	Analog Devices / Maxim Integrated	Real Time Clock I C RTC/Supervisor with Trickle Charger	Datasheet	2,973In Stock	Cut Tape $8.62 $6.65 $6.16 $5.63 View Reel $5.19 $5.29 $5.28 $5.19 $5.19 MouseReel Available	Min.: 1 Mult.: 1 Max.: 2,378 : 2,500	I2C	YY-MM-DD-dd	HH:MM:SS:hh (12 hr, 24 hr)	SOIC-8	Backup Switching	2.97 V	3.63 V	- 40 C	+ 85 C	DS1388Z	SMD/SMT	Reel, Cut Tape, MouseReel
Real Time Clock I C RTC/Supervisor with Trickle Charger DS1388Z-5+ Analog Devices / Maxim Integrated 1: $9.69 433In Stock	Mfr. Part No. DS1388Z-5+ Mouser Part No 700-DS1388Z-5	Analog Devices / Maxim Integrated	Real Time Clock I C RTC/Supervisor with Trickle Charger	Datasheet	433In Stock	$9.69 $7.54 $7.00 $6.40 $6.33	Min.: 1 Mult.: 1 Max.: 346	I2C	YY-MM-DD-dd	HH:MM:SS:hh (12 hr, 24 hr)	SOIC-8	Backup Switching	4.5 V	5.5 V	- 40 C	+ 85 C	DS1388Z	SMD/SMT	Tube
Real Time Clock Low-Voltage SPI/3-Wire RTCs with Trickle DS1391U-33+T&R Analog Devices / Maxim Integrated 1: $6.48 5,105In Stock	Mfr. Part No. DS1391U-33+T&R Mouser Part No 700-DS1391U-33T&R	Analog Devices / Maxim Integrated	Real Time Clock Low-Voltage SPI/3-Wire RTCs with Trickle	Datasheet	5,105In Stock	Cut Tape $6.48 $4.97 $4.59 $4.18 View Reel $3.70 $3.97 $3.90 $3.88 $3.70 MouseReel Available	Min.: 1 Mult.: 1 Max.: 4,084 : 3,000	SPI	YY-MM-DD-dd	HH:MM:SS:hh (12 hr, 24 hr)	uSOP-10	Backup Switching	2.97 V	5.5 V	- 40 C	+ 85 C	DS1391U	SMD/SMT	Reel, Cut Tape, MouseReel
Real Time Clock Total-Elapsed-Time Recorder with Alarm DS1682S+T&R Analog Devices / Maxim Integrated 1: $9.47 1,143In Stock 12,500Expected 2026/10/09	Mfr. Part No. DS1682S+T&R Mouser Part No 700-DS1682ST&R	Analog Devices / Maxim Integrated	Real Time Clock Total-Elapsed-Time Recorder with Alarm	Datasheet	1,143In Stock 12,500Expected 2026/10/09	Cut Tape $9.47 $7.37 $6.83 $6.26 $6.11 $6.11 MouseReel Available	Min.: 1 Mult.: 1 Max.: 2,126	Serial 2-Wire	Binary	Binary	SOIC-8	No Backup Switching	2.5 V	5.5 V	- 40 C	+ 85 C	DS1682	SMD/SMT	Reel, Cut Tape, MouseReel
Real Time Clock TOTAL-ELAPSED-TIME RECORDER WITH AL T&R DS1683S+T&R Analog Devices / Maxim Integrated 1: $7.97 7,345In Stock	Mfr. Part No. DS1683S+T&R Mouser Part No 700-DS1683S+T&R	Analog Devices / Maxim Integrated	Real Time Clock TOTAL-ELAPSED-TIME RECORDER WITH AL T&R	Datasheet	7,345In Stock	Cut Tape $7.97 $6.15 $5.69 $5.19 $4.97 Reel $4.28 MouseReel Available	Min.: 1 Mult.: 1 Max.: 5,916 : 2,500	Serial 2-Wire, I2C	Binary	Binary	SO-8	No Backup Switching	2.5 V	5.5 V	- 40 C	+ 85 C	DS1683	SMD/SMT	Reel, Cut Tape, MouseReel
Real Time Clock 3V/5V Real-Time Clock DS1685EN-3+T&R Analog Devices / Maxim Integrated 1: $14.22 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 $14.22 $11.14 $10.37 $9.52 View Reel $9.42 $9.43 $9.42 $9.42 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 Y2K-Compliant, Nonvolatile Timekeeping R DS1746P-70+ Analog Devices / Maxim Integrated 1: $66.73 33In Stock	Mfr. Part No. DS1746P-70+ Mouser Part No 700-DS1746P-70	Analog Devices / Maxim Integrated	Real Time Clock Y2K-Compliant, Nonvolatile Timekeeping R	Datasheet	33In Stock	$66.73 $55.11 $52.22 $51.54	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	DS1746P	SMD/SMT	Tray
Real Time Clock Y2K-Compliant, Nonvolatile Timekeeping R DS1746W-120+ Analog Devices / Maxim Integrated 1: $69.11 110In Stock	Mfr. Part No. DS1746W-120+ Mouser Part No 700-DS1746W-120	Analog Devices / Maxim Integrated	Real Time Clock Y2K-Compliant, Nonvolatile Timekeeping R	Datasheet	110In Stock	$69.11 $57.08 $54.06	Min.: 1 Mult.: 1 Max.: 88	Parallel	YY-MM-DD-dd	HH:MM:SS (24 hr)	EDIP-32	Integrated Battery	2.97 V	3.63 V	0 C	+ 70 C	DS1746W	Through Hole	Tube
Real Time Clock Y2K-Compliant, Nonvolatile Timekeeping R DS1747-70+ Analog Devices / Maxim Integrated 1: $87.23 354In Stock 7Expected 2026/10/26	Mfr. Part No. DS1747-70+ Mouser Part No 700-DS1747-70	Analog Devices / Maxim Integrated	Real Time Clock Y2K-Compliant, Nonvolatile Timekeeping R	Datasheet	354In Stock 7Expected 2026/10/26	$87.23 $72.62 $68.37 $64.58	Min.: 1 Mult.: 1 Max.: 283	Parallel	YY-MM-DD-dd	HH:MM:SS (24 hr)	EDIP-32	Integrated Battery	4.5 V	5.5 V	0 C	+ 70 C	DS1747	Through Hole	Tube
Real Time Clock Y2K-Compliant, Nonvolatile Timekeeping R DS1747W-120IND+ Analog Devices / Maxim Integrated 1: $87.68 223In Stock	Mfr. Part No. DS1747W-120IND+ Mouser Part No 700-DS1747W-120IND	Analog Devices / Maxim Integrated	Real Time Clock Y2K-Compliant, Nonvolatile Timekeeping R	Datasheet	223In Stock	$87.68 $72.99 $68.72 $64.91	Min.: 1 Mult.: 1 Max.: 178	Parallel	YY-MM-DD-dd	HH:MM:SS (24 hr)	EDIP-32	Integrated Battery	2.97 V	3.63 V	- 40 C	+ 85 C	DS1747W	Through Hole	Tube
Real Time Clock 1-Wire Time Chip With Interrupt DS2417P+T&R Analog Devices / Maxim Integrated 1: $4.92 5,876In Stock	Mfr. Part No. DS2417P+T&R Mouser Part No 700-DS2417PT&R	Analog Devices / Maxim Integrated	Real Time Clock 1-Wire Time Chip With Interrupt	Datasheet	5,876In Stock	Cut Tape $4.92 $3.76 $3.47 $3.13 View Reel $2.81 $2.98 $2.90 $2.85 $2.83 $2.81 MouseReel Available	Min.: 1 Mult.: 1 Max.: 4,700 : 4,000	Serial 1-Wire	Binary	Binary		Backup Switching	2.5 V	5.5 V	- 40 C	+ 85 C	DS2417P	SMD/SMT	Reel, Cut Tape, MouseReel
Real Time Clock Extremely Accurate I C-Integrated RTC/TC DS3231SN# Analog Devices / Maxim Integrated 1: $18.60 1,417In 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	1,417In Stock	$18.60 $14.75 $13.47 $12.71 View $12.12 $11.90	Min.: 1 Mult.: 1 Max.: 1,194	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+ Analog Devices / Maxim Integrated 1: $15.61 2,553In Stock	Mfr. Part No. DS3232MZ+ Mouser Part No 700-DS3232MZ+	Analog Devices / Maxim Integrated	Real Time Clock 5ppm, I C Real-Time Clock with SRAM	Datasheet	2,553In Stock	$15.61 $12.22 $11.68 $9.92 View $9.73 $9.51	Min.: 1 Mult.: 1 Max.: 2,042	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	Tube
Real Time Clock Extremely Accurate SPI Bus RTC with Inte DS3234S#T&R Analog Devices / Maxim Integrated 1: $15.18 1,898In Stock	Mfr. Part No. DS3234S#T&R Mouser Part No 700-DS3234S#T&R-	Analog Devices / Maxim Integrated	Real Time Clock Extremely Accurate SPI Bus RTC with Inte	Datasheet	1,898In Stock	Cut Tape $15.18 $11.89 $11.05 $10.15 View Reel $8.55 $10.06 $10.04 $8.55 MouseReel Available	Min.: 1 Mult.: 1 Max.: 1,518 : 1,000	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	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: $1.99 960In Stock	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	960In Stock	Cut Tape $1.99 $1.45 $1.31 $1.16 Reel $1.05 View $1.09 $1.06 $0.996 $0.977 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 Real-Time Clock I2C Interface Integrated Circuit, -40 to +85 C, 16-pin QFN AM0805AQ Ambiq 1: $0.87 2,659In Stock	Mfr. Part No. AM0805AQ Mouser Part No 222-AM0805AQ	Ambiq	Real Time Clock Real-Time Clock I2C Interface Integrated Circuit, -40 to +85 C, 16-pin QFN Learn More about Ambiq artasie am08x5 clocks	Datasheet	2,659In Stock	$0.87 $0.734	Min.: 1 Mult.: 1										Artasie I2C
Real Time Clock Real-Time Clock I2C interface with power management, -40 to +85 C, 16-pin QFN AM1805AQ Ambiq 1: $0.98 14,470In Stock 15,000Expected 2027/01/08	Mfr. Part No. AM1805AQ Mouser Part No 222-AM1805AQ	Ambiq	Real Time Clock Real-Time Clock I2C interface with power management, -40 to +85 C, 16-pin QFN Learn More about Ambiq am18x5 rtcs	Datasheet	14,470In Stock 15,000Expected 2027/01/08	$0.98 $0.814	Min.: 1 Mult.: 1										Artasie I2C w/ Power Management
Real Time Clock Serial 512 (64x8) M41ST85WMH6F STMicroelectronics 1: $10.40 565In Stock	Mfr. Part No. M41ST85WMH6F Mouser Part No 511-M41ST85WMH6F	STMicroelectronics	Real Time Clock Serial 512 (64x8)	Datasheet	565In Stock	Cut Tape $10.40 $8.11 $7.54 $6.90 Reel $6.18 View $6.58 $6.35 $6.04 Quote MouseReel Available	Min.: 1 Mult.: 1 : 936	Serial	YY-MM-DD-dd	HH:MM:SS:hh (12 hr, 24 hr)	SOH-28	Backup Switching	2.7 V	3.6 V	- 40 C	+ 85 C	M41ST85W	SMD/SMT	Reel, Cut Tape, MouseReel
Real Time Clock Serial 1280 (160x8) M41ST87WMX6TR STMicroelectronics 1: $10.79 1,273In Stock	Mfr. Part No. M41ST87WMX6TR Mouser Part No 511-M41ST87WMX6TR	STMicroelectronics	Real Time Clock Serial 1280 (160x8)	Datasheet	1,273In Stock	Cut Tape $10.79 $8.42 $7.83 $7.18 Reel $6.43 View $6.83 $6.69 $6.22 MouseReel Available	Min.: 1 Mult.: 1 : 1,000	Serial	YY-MM-DD-dd	HH:MM:SS:hh (12 hr, 24 hr)	SOX-28	Backup Switching	2.7 V	3.6 V	- 40 C	+ 85 C	M41ST87W	SMD/SMT	Reel, Cut Tape, MouseReel
Real Time Clock 128 NVRAM Serial RTC 3.0 to 3.6 Vcc M41ST87WSS6F STMicroelectronics 1: $7.77 361In 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	361In Stock 1,350On Order	Cut Tape $7.77 $6.00 $5.55 $5.07 Reel $4.35 View $4.76 $4.14 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 2.0 to 5.5V 64 (8X8) M41T00SM6F STMicroelectronics 1: $4.27 4,676In Stock 5,000Expected 2026/11/25	Mfr. Part No. M41T00SM6F Mouser Part No 511-M41T00SM6F	STMicroelectronics	Real Time Clock 2.0 to 5.5V 64 (8X8)	Datasheet	4,676In Stock 5,000Expected 2026/11/25	Cut Tape $4.27 $3.23 $2.97 $2.67 View Reel $2.30 $2.54 $2.51 $2.42 $2.30 MouseReel Available	Min.: 1 Mult.: 1 : 2,500	Serial	YYYY-MM-DD	HH:MM:SS (24 hr)	SOIC-8	Backup Switching	2.7 V	5.5 V	- 40 C	+ 85 C	M41T00S	SMD/SMT	Reel, Cut Tape, MouseReel
Real Time Clock Serial 64 (8X8) M41T0M6F STMicroelectronics 1: $4.70 4,627In Stock 12,500On Order	Mfr. Part No. M41T0M6F Mouser Part No 511-M41T0M6F	STMicroelectronics	Real Time Clock Serial 64 (8X8)	Datasheet	4,627In Stock 12,500On Order On Order Ship Dates Mfr. No: M41T0M6F Stock: 4,627 Can Dispatch Immediately On Order: 5,000 Expected 2026/10/19 7,500 Expected 2027/05/17 Factory Lead Time: 30 Weeks	Cut Tape $4.70 $3.55 $3.26 $2.95 Reel $2.54 View $2.80 $2.78 $2.61 $2.45 MouseReel Available	Min.: 1 Mult.: 1 : 2,500	Serial 2-Wire, I2C	YY-MM-DD-dd	HH:MM:SS (24 hr)	SOIC-8	No Backup Switching	2 V	5.5 V	- 40 C	+ 85 C	M41T0	SMD/SMT	Reel, Cut Tape, MouseReel
Real Time Clock Serial 512 (64x8) M41T11M6F STMicroelectronics 1: $3.61 2,817In Stock	Mfr. Part No. M41T11M6F Mouser Part No 511-M41T11M6F	STMicroelectronics	Real Time Clock Serial 512 (64x8)	Datasheet	2,817In Stock	Cut Tape $3.61 $2.72 $2.49 $2.24 Reel $1.90 View $2.11 $2.07 $1.97 $1.81 MouseReel Available	Min.: 1 Mult.: 1 : 2,500	Serial	YY-MM-DD-dd	HH:MM:SS (24 hr)	SOIC-8	Backup Switching	2 V	5.5 V	- 40 C	+ 85 C	M41T11	SMD/SMT	Reel, Cut Tape, MouseReel
Real Time Clock Serial 512 (64x8) M41T11MH6F STMicroelectronics 1: $10.19 1,385In Stock	Mfr. Part No. M41T11MH6F Mouser Part No 511-M41T11MH6F	STMicroelectronics	Real Time Clock Serial 512 (64x8)	Datasheet	1,385In Stock	Cut Tape $10.19 $7.93 $7.37 $6.75 Reel $6.02 View $6.40 $6.04 $5.64 Quote MouseReel Available	Min.: 1 Mult.: 1 : 936	Serial	YY-MM-DD-dd	HH:MM:SS (24 hr)	SOX-28	Backup Switching	2 V	5.5 V	- 40 C	+ 85 C	M41T11	SMD/SMT	Reel, Cut Tape, MouseReel
Real Time Clock 2.0-5.5V 512 (64x8) M41T81SM6F STMicroelectronics 1: $2.90 34In Stock 15,000On Order	Mfr. Part No. M41T81SM6F Mouser Part No 511-M41T81SM6F	STMicroelectronics	Real Time Clock 2.0-5.5V 512 (64x8)	Datasheet	34In Stock 15,000On Order On Order Ship Dates Mfr. No: M41T81SM6F Stock: 34 Can Dispatch Immediately On Order: 7,500 Expected 2026/11/04 7,500 Expected 2027/07/19 Factory Lead Time: 30 Weeks	Cut Tape $2.90 $2.15 $1.97 $1.76 View Reel $1.50 $1.66 $1.63 $1.54 $1.50 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	2.7 V	5.5 V	- 40 C	+ 85 C	M41T81S	SMD/SMT	Reel, Cut Tape, MouseReel