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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 (IDR) 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 Real-Time Clock I2C Interface Integrated Circuit, -40 to +85 C, 16-pin QFN AM0805AQ Ambiq 1: Rp12.475,28 2.609In 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	2.609In Stock	Rp12.475,28	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: Rp13.759,50 1.527In Stock 15.000Expected 08/01/2027	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	1.527In Stock 15.000Expected 08/01/2027	Rp13.759,50	Min.: 1 Mult.: 1										Artasie I2C w/ Power Management
Real Time Clock 32.768 kHz +/-3 PPM I2C -40/+85C RV-8803-C7-32.768KHZ-3PPM-TA-QC Micro Crystal 1: Rp53.753,78 3.815In Stock 94.000On 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	3.815In Stock 94.000On Order On Order Ship Dates Mfr. No: RV-8803-C7-32.768KHZ-3PPM-TA-QC Stock: 3.815 Can Dispatch Immediately On Order: 14.000 Expected 11/11/2026 44.000 Expected 30/04/2027 36.000 Expected 17/06/2027 Factory Lead Time: 34 Weeks	Cut Tape Rp53.753,78 Rp43.846,94 Rp41.278,50 Rp37.242,38 View Reel Rp28.252,84 Rp29.353,60 Rp28.803,22 Rp28.252,84 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 Serial 512 (64x8) M41ST85WMH6F STMicroelectronics 1: Rp190.248,02 565In Stock	Mfr. Part No. M41ST85WMH6F Mouser Part No 511-M41ST85WMH6F	STMicroelectronics	Real Time Clock Serial 512 (64x8)	Datasheet	565In Stock	Cut Tape Rp190.248,02 Rp148.419,14 Rp137.961,92 Rp126.403,94 Reel Rp112.460,98 View Rp120.533,22 Rp116.497,10 Rp109.709,08 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: Rp199.421,02 1.148In Stock	Mfr. Part No. M41ST87WMX6TR Mouser Part No 511-M41ST87WMX6TR	STMicroelectronics	Real Time Clock Serial 1280 (160x8)	Datasheet	1.148In Stock	Cut Tape Rp199.421,02 Rp155.757,54 Rp144.933,40 Rp132.825,04 View Reel Rp118.882,08 Rp127.321,24 Rp125.853,56 Rp118.882,08 Quote 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 2.0 to 5.5V 64 (8X8) M41T00SM6F STMicroelectronics 1: Rp78.337,42 788In Stock 5.000Expected 25/11/2026	Mfr. Part No. M41T00SM6F Mouser Part No 511-M41T00SM6F	STMicroelectronics	Real Time Clock 2.0 to 5.5V 64 (8X8)	Datasheet	788In Stock 5.000Expected 25/11/2026	Cut Tape Rp78.337,42 Rp59.257,58 Rp54.487,62 Rp49.167,28 View Reel Rp42.195,80 Rp46.598,84 Rp46.048,46 Rp44.397,32 Rp42.195,80 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: Rp86.226,20 1.876In Stock 12.500On Order	Mfr. Part No. M41T0M6F Mouser Part No 511-M41T0M6F	STMicroelectronics	Real Time Clock Serial 64 (8X8)	Datasheet	1.876In Stock 12.500On Order On Order Ship Dates Mfr. No: M41T0M6F Stock: 1.876 Can Dispatch Immediately On Order: 5.000 Expected 22/12/2026 7.500 Expected 17/05/2027 Factory Lead Time: 30 Weeks	Cut Tape Rp86.226,20 Rp65.495,22 Rp60.358,34 Rp54.671,08 View Reel Rp45.681,54 Rp51.919,18 Rp51.001,88 Rp45.681,54 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: Rp66.229,06 1.784In Stock 2.500Expected 19/04/2027	Mfr. Part No. M41T11M6F Mouser Part No 511-M41T11M6F	STMicroelectronics	Real Time Clock Serial 512 (64x8)	Datasheet	1.784In Stock 2.500Expected 19/04/2027	Cut Tape Rp66.229,06 Rp49.901,12 Rp45.681,54 Rp41.095,04 Reel Rp34.673,94 View Rp38.710,06 Rp37.976,22 Rp35.958,16 Rp33.206,26 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: Rp186.945,74 1.380In Stock	Mfr. Part No. M41T11MH6F Mouser Part No 511-M41T11MH6F	STMicroelectronics	Real Time Clock Serial 512 (64x8)	Datasheet	1.380In Stock	Cut Tape Rp186.945,74 Rp145.483,78 Rp135.210,02 Rp123.652,04 Reel Rp110.442,92 View Rp117.414,40 Rp110.626,38 Rp103.471,44 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 Serial 160 (20x8) M41T80M6F STMicroelectronics 1: Rp105.489,50 1.840In Stock	Mfr. Part No. M41T80M6F Mouser Part No 511-M41T80M6F	STMicroelectronics	Real Time Clock Serial 160 (20x8)	Datasheet	1.840In Stock	Cut Tape Rp105.489,50 Rp81.639,70 Rp74.851,68 Rp68.247,12 View Reel Rp61.092,18 Rp64.577,92 Rp62.559,86 Rp61.642,56 Rp61.092,18 Quote 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	No Backup Switching	2 V	5.5 V	- 40 C	+ 85 C	M41T80	SMD/SMT	Reel, Cut Tape, MouseReel
Real Time Clock 2.0-5.5V 512 (64x8) M41T81SM6F STMicroelectronics 1: Rp54.854,54 2.475In Stock 17.500On Order	Mfr. Part No. M41T81SM6F Mouser Part No 511-M41T81SM6F	STMicroelectronics	Real Time Clock 2.0-5.5V 512 (64x8)	Datasheet	2.475In Stock 17.500On Order On Order Ship Dates Mfr. No: M41T81SM6F Stock: 2.475 Can Dispatch Immediately On Order: 7.500 Expected 19/07/2027 10.000 Expected 18/10/2027 Factory Lead Time: 30 Weeks	Cut Tape Rp54.854,54 Rp40.911,58 Rp37.425,84 Rp33.756,64 View Reel Rp28.986,68 Rp31.922,04 Rp30.821,28 Rp30.637,82 Rp28.986,68 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
Real Time Clock Serial I2C bus RTC M41T82SM6F STMicroelectronics 1: Rp59.807,96 3.212In Stock 5.000Expected 08/11/2027	Mfr. Part No. M41T82SM6F Mouser Part No 511-M41T82SM6F	STMicroelectronics	Real Time Clock Serial I2C bus RTC	Datasheet	3.212In Stock 5.000Expected 08/11/2027	Cut Tape Rp59.807,96 Rp44.764,24 Rp41.095,04 Rp36.875,46 Reel Rp30.821,28 View Rp34.857,40 Rp33.940,10 Rp33.022,80 Rp30.454,36 MouseReel Available	Min.: 1 Mult.: 1 : 2.500	Serial	YY-MM-DD-dd	HH:MM:SS:hh (12 hr, 24 hr)	SOIC-8	Backup Switching	3 V	5.5 V	- 40 C	+ 85 C	M41T82	SMD/SMT	Reel, Cut Tape, MouseReel
Real Time Clock SPI RTC 32.768 kHz 365nA 2.0V to 5.5V M41T93RQA6F STMicroelectronics 1: Rp153.739,48 879In Stock	Mfr. Part No. M41T93RQA6F Mouser Part No 511-M41T93RQA6F	STMicroelectronics	Real Time Clock SPI RTC 32.768 kHz 365nA 2.0V to 5.5V	Datasheet	879In Stock	Cut Tape Rp153.739,48 Rp118.515,16 Rp109.709,08 Rp100.169,16 Reel Rp89.711,94 View Rp92.647,30 Rp88.427,72 Quote MouseReel Available	Min.: 1 Mult.: 1 : 1.000	SPI	YY-MM-DD-dd	HH:MM:SS:hh (12 hr, 24 hr)	QFN-16	Backup Switching	2.7 V	5.5 V	- 40 C	+ 85 C	M41T93	SMD/SMT	Reel, Cut Tape, MouseReel
Real Time Clock Serial SPI bus RTC M41T93ZMY6F STMicroelectronics 1: Rp201.072,16 757In Stock	Mfr. Part No. M41T93ZMY6F Mouser Part No 511-M41T93ZMY6F	STMicroelectronics	Real Time Clock Serial SPI bus RTC	Datasheet	757In Stock	Cut Tape Rp201.072,16 Rp157.041,76 Rp146.034,16 Rp133.925,80 View Reel Rp118.331,70 Rp128.238,54 Rp123.468,58 Rp118.331,70 Quote MouseReel Available	Min.: 1 Mult.: 1 : 1.000	SPI	YY-MM-DD-dd	HH:MM:SS:hh (12 hr, 24 hr)	SOX-18	Backup Switching	2.38 V	5.5 V	- 40 C	+ 85 C	M41T93	SMD/SMT	Reel, Cut Tape, MouseReel
Real Time Clock Serial 512 (64x8) M41T94MQ6F STMicroelectronics 1: Rp100.536,08 2.618In Stock 5.000Expected 28/04/2027	Mfr. Part No. M41T94MQ6F Mouser Part No 511-M41T94MQ6F	STMicroelectronics	Real Time Clock Serial 512 (64x8)	Datasheet	2.618In Stock 5.000Expected 28/04/2027	Cut Tape Rp100.536,08 Rp76.686,28 Rp70.815,56 Rp64.211,00 View Reel Rp55.221,46 Rp61.092,18 Rp59.807,96 Rp59.257,58 Rp55.221,46 Quote MouseReel Available	Min.: 1 Mult.: 1 : 2.500	Serial	YY-MM-DD-dd	HH:MM:SS:hh (12 hr, 24 hr)	SO-16	Backup Switching	2.7 V	5.5 V	- 40 C	+ 85 C	M41T94	SMD/SMT	Reel, Cut Tape, MouseReel
Real Time Clock 16K (2Kx8) 150ns M48T02-150PC1 STMicroelectronics 1: Rp574.229,80 637In Stock	Mfr. Part No. M48T02-150PC1 Mouser Part No 511-M48T0215PC1	STMicroelectronics	Real Time Clock 16K (2Kx8) 150ns	Datasheet	637In Stock	Rp574.229,80 Rp456.448,48 Rp417.371,50 Rp395.356,30 Rp380.312,58	Min.: 1 Mult.: 1	Parallel	YY-MM-DD-dd	HH:MM:SS (24 hr)	PCDIP-24	Integrated Battery	4.75 V	5.5 V	0 C	+ 70 C	M48T02	Through Hole	Tube
Real Time Clock 16K (2Kx8) 70ns M48T02-70PC1 STMicroelectronics 1: Rp554.966,50 427In Stock	Mfr. Part No. M48T02-70PC1 Mouser Part No 511-M48T0270PC1	STMicroelectronics	Real Time Clock 16K (2Kx8) 70ns	Datasheet	427In Stock	Rp554.966,50 Rp441.037,84 Rp417.188,04 Rp387.650,98 View Rp374.258,40 Rp359.581,60 Quote	Min.: 1 Mult.: 1	Parallel	YY-MM-DD-dd	HH:MM:SS (24 hr)	PCDIP-24	Integrated Battery	4.75 V	5.5 V	0 C	+ 70 C	M48T02	Through Hole	Tube
Real Time Clock 256K (32Kx8) 70ns M48T35-70PC1 STMicroelectronics 1: Rp1.002.241,98 233In Stock	Mfr. Part No. M48T35-70PC1 Mouser Part No 511-M48T3570PC1	STMicroelectronics	Real Time Clock 256K (32Kx8) 70ns	Datasheet	233In Stock	Rp1.002.241,98 Rp815.479,70 Rp765.762,04 Rp722.465,48 View Rp722.098,56 Quote	Min.: 1 Mult.: 1	Parallel	YY-MM-DD-dd	HH:MM:SS (24 hr)	PCDIP-28	Integrated Battery	4.75 V	5.5 V	0 C	+ 70 C	M48T35	Through Hole	Tube
Real Time Clock 256K (32Kx8) 70ns M48T35Y-70MH1F STMicroelectronics 1: Rp443.973,20 235In Stock	Mfr. Part No. M48T35Y-70MH1F Mouser Part No 511-M48T35Y-70MH1F	STMicroelectronics	Real Time Clock 256K (32Kx8) 70ns	Datasheet	235In Stock	Cut Tape Rp443.973,20 Rp355.545,48 Rp333.346,82 Rp309.130,10 View Reel Rp283.629,16 Rp302.525,54 Rp283.812,62 Rp283.629,16 Quote MouseReel Available	Min.: 1 Mult.: 1 : 936	Parallel	YY-MM-DD-dd	HH:MM:SS (24 hr)	SOX-28	Backup Switching	4.5 V	5.5 V	0 C	+ 70 C	M48T35Y	SMD/SMT	Reel, Cut Tape, MouseReel
Real Time Clock 64K (8Kx8) 70ns M48T58-70PC1 STMicroelectronics 1: Rp878.039,56 179In Stock	Mfr. Part No. M48T58-70PC1 Mouser Part No 511-M48T5870PC1	STMicroelectronics	Real Time Clock 64K (8Kx8) 70ns	Datasheet	179In Stock	Rp878.039,56 Rp714.393,24 Rp671.280,14 Rp656.603,34 View Rp617.709,82 Quote	Min.: 1 Mult.: 1	Parallel	YY-MM-DD-dd	HH:MM:SS (24 hr)	PCDIP-28	Integrated Battery	4.75 V	5.5 V	0 C	+ 70 C	M48T58	Through Hole	Tube
Real Time Clock 64K (8Kx8) 70ns M48T58Y-70PC1 STMicroelectronics 1: Rp685.039,64 415In Stock	Mfr. Part No. M48T58Y-70PC1 Mouser Part No 511-M48T58Y70PC1	STMicroelectronics	Real Time Clock 64K (8Kx8) 70ns	Datasheet	415In Stock	Rp685.039,64 Rp551.664,22 Rp517.540,66 Rp491.672,80 View Rp469.290,68 Quote	Min.: 1 Mult.: 1	Parallel	YY-MM-DD-dd	HH:MM:SS (24 hr)	PCDIP-28	Integrated Battery	4.5 V	5.5 V	0 C	+ 70 C	M48T58Y	Through Hole	Tube
Real Time Clock I2C GP RTCC 64B SRAM MCP7940NT-I/MNY Microchip Technology 1: Rp18.529,46 9.596In Stock	Mfr. Part No. MCP7940NT-I/MNY Mouser Part No 579-MCP7940NT-I/MNY	Microchip Technology	Real Time Clock I2C GP RTCC 64B SRAM Learn More about Microchip Technology microchip mcp7940n calendar	Datasheet	9.596In Stock	Cut Tape Rp18.529,46 Reel Rp15.227,18 MouseReel Available	Min.: 1 Mult.: 1 : 3.300	Serial 2-Wire, I2C	YY-MM-DD-dd	HH:MM:SS:hh (12 hr, 24 hr)	TDFN-8	Backup Switching	1.8 V	5.5 V	- 40 C	+ 85 C		SMD/SMT	Reel, Cut Tape, MouseReel
Real Time Clock I2C GP RTCC 1Kb EE 64B SRAM ID MCP79410T-I/MNY Microchip Technology 1: Rp22.382,12 3.167In Stock	Mfr. Part No. MCP79410T-I/MNY Mouser Part No 579-MCP79410T-I/MNY	Microchip Technology	Real Time Clock I2C GP RTCC 1Kb EE 64B SRAM ID Learn More about Microchip Technology microchip mcp794xx calendars	Datasheet	3.167In Stock	Cut Tape Rp22.382,12 Reel Rp18.346,00 MouseReel Available	Min.: 1 Mult.: 1 : 3.300	I2C	YY-MM-DD-dd	HH:MM:SS:hh (12 hr, 24 hr)	TDFN-8	Backup Switching	1.8 V	5.5 V	- 40 C	+ 85 C		SMD/SMT	Reel, Cut Tape, MouseReel
Real Time Clock I2C GP RTCC 1Kb EE 64B SRAM EUI-48 MCP79411T-I/SN Microchip Technology 1: Rp22.565,58 5.458In Stock	Mfr. Part No. MCP79411T-I/SN Mouser Part No 579-MCP79411TISN	Microchip Technology	Real Time Clock I2C GP RTCC 1Kb EE 64B SRAM EUI-48 Learn More about Microchip Technology microchip mcp794xx calendars	Datasheet	5.458In Stock	Cut Tape Rp22.565,58 Reel Rp18.896,38 MouseReel Available	Min.: 1 Mult.: 1 : 3.300	I2C	YY-MM-DD-dd	HH:MM:SS:hh (12 hr, 24 hr)	SOIC-8	Backup Switching	1.8 V	5.5 V	- 40 C	+ 85 C		SMD/SMT	Reel, Cut Tape, MouseReel
Real Time Clock SPI GP RTCC 2Kb EE 64B SRAM ID MCP79520T-I/MS Microchip Technology 1: Rp27.335,54 1.890In Stock 2.500Expected 10/11/2026	Mfr. Part No. MCP79520T-I/MS Mouser Part No 579-MCP79520T-I/MS	Microchip Technology	Real Time Clock SPI GP RTCC 2Kb EE 64B SRAM ID Learn More about Microchip Technology microchip mcp795xx	Datasheet	1.890In Stock 2.500Expected 10/11/2026	Cut Tape Rp27.335,54 Reel Rp22.932,50 MouseReel Available	Min.: 1 Mult.: 1 : 2.500	Serial, I2C, SPI	YY-MM-DD-dd	HH:MM:SS:hh (12 hr, 24 hr)		Backup Switching	1.8 V	3.6 V	- 40 C	+ 85 C		SMD/SMT	Reel, Cut Tape, MouseReel