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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 RTC I2c Serial IC 1.8 to 5.5V 32kHz 1337AGDCGI8 Renesas Electronics 1: Rp64.211,00 2.700Expected 13/03/2028	Mfr. Part No. 1337AGDCGI8 Mouser Part No 972-1337AGDCGI8	Renesas Electronics	Real Time Clock RTC I2c Serial IC 1.8 to 5.5V 32kHz	Datasheet	2.700Expected 13/03/2028	Cut Tape Rp64.211,00 Rp47.883,06 Rp43.846,94 Rp39.260,44 View Reel Rp34.490,48 Rp37.058,92 Rp36.325,08 Rp34.673,94 Rp34.490,48 MouseReel Available	Min.: 1 Mult.: 1 : 3.000				SOIC-8						1337AGD	SMD/SMT	Reel, Cut Tape, MouseReel
Real Time Clock .9RTC BASE 1338-31DCGI Renesas Electronics 1: Rp71.549,40 1.305Expected 18/02/2028	Mfr. Part No. 1338-31DCGI Mouser Part No 972-1338-31DCGI	Renesas Electronics	Real Time Clock .9RTC BASE	Datasheet	1.305Expected 18/02/2028	Rp71.549,40 Rp53.570,32 Rp46.965,76 Rp43.296,56 View Rp41.278,50 Rp41.095,04	Min.: 1 Mult.: 1	Serial 2-Wire, I2C	YY-MM-DD-dd	HH:MM:SS:hh (12 hr, 24 hr)	SOIC-8	Backup Switching	1.3 V	3.7 V	- 40 C	+ 85 C	1338	SMD/SMT	Tube
Real Time Clock Real Time Clock 1339-31DVGI8 Renesas Electronics 1: Rp60.908,72 2.500Expected 17/01/2028	Mfr. Part No. 1339-31DVGI8 Mouser Part No 972-1339-31DVGI8	Renesas Electronics	Real Time Clock Real Time Clock	Datasheet	2.500Expected 17/01/2028	Cut Tape Rp60.908,72 Rp45.498,08 Rp43.113,10 Reel Rp33.756,64	Min.: 1 Mult.: 1 : 2.500	Serial 2-Wire, I2C	YY-MM-DD-dd	HH:MM:SS:hh (12 hr, 24 hr)	TSSOP-8	Backup Switching	1.3 V	3.7 V	- 40 C	+ 85 C	1339	SMD/SMT	Reel, Cut Tape
Real Time Clock SPI GP RTCC 1Kb EE 64B SRAM EUI-64 MCP79512-I/MS Microchip Technology 1: Rp25.500,94 500On Order	Mfr. Part No. MCP79512-I/MS Mouser Part No 579-MCP79512-I/MS	Microchip Technology	Real Time Clock SPI GP RTCC 1Kb EE 64B SRAM EUI-64 Learn More about Microchip Technology microchip mcp795xx	Datasheet	500On Order	Rp25.500,94 Rp23.482,88 Rp22.382,12	Min.: 1 Mult.: 1	SPI	YY-MM-DD-dd	HH:MM:SS:hh (12 hr, 24 hr)	MSOP-10	Backup Switching	1.8 V	3.6 V	- 40 C	+ 85 C		SMD/SMT	Tube
Real Time Clock 256K (32Kx8) 70ns M48T37Y-70MH1F STMicroelectronics 1: Rp376.276,46 28In Stock	Mfr. Part No. M48T37Y-70MH1F Mouser Part No 511-M48T37Y-70MH1F	STMicroelectronics	Real Time Clock 256K (32Kx8) 70ns	Datasheet	28In Stock	Cut Tape Rp376.276,46 Rp323.439,98 Rp302.342,08 Rp267.668,14 View Reel Rp247.304,08 Rp261.063,58 Rp247.671,00 Rp247.304,08 Quote MouseReel Available	Min.: 1 Mult.: 1 : 936	Parallel	YY-MM-DD-dd	HH:MM:SS (24 hr)	SOIC-44	Backup Switching	4.5 V	5.5 V	0 C	+ 70 C	M48T37Y	SMD/SMT	Reel, Cut Tape, MouseReel
Real Time Clock 32.768kHz, 20PPM, Real-Time Clock Module with SPI-Bus RV-8063-C8 32.768kHz-20PPM-TA-QC Micro Crystal 1: Rp27.702,46 1.000Expected 05/02/2027	Mfr. Part No. RV-8063-C8 32.768kHz-20PPM-TA-QC Mouser Part No 428-204233-MC01	Micro Crystal	Real Time Clock 32.768kHz, 20PPM, Real-Time Clock Module with SPI-Bus Learn More about Micro Crystal rv 8063 c8 rtc modules	Datasheet	1.000Expected 05/02/2027	Cut Tape Rp27.702,46 Rp20.364,06 Rp18.180,89 Rp16.126,13 Reel Rp14.566,72 View Rp15.153,80 Rp15.007,03 Rp13.851,23 Rp13.557,69 MouseReel Available	Min.: 1 Mult.: 1 : 1.000	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 RTC I2c Serial IC 1.8 to 5.5V 32kHz 1337AGDCGI Renesas Electronics 1: Rp64.211,00 291Expected 18/02/2028	Mfr. Part No. 1337AGDCGI Mouser Part No 972-1337AGDCGI	Renesas Electronics	Real Time Clock RTC I2c Serial IC 1.8 to 5.5V 32kHz	Datasheet	291Expected 18/02/2028	Rp64.211,00 Rp47.883,06 Rp43.846,94 Rp39.076,98 Rp37.242,38	Min.: 1 Mult.: 1	Serial 2-Wire, I2C	YY-MM-DD-dd	HH:MM:SS:hh (12 hr, 24 hr)	SOIC-8	No Backup Switching	1.8 V	5.5 V	- 40 C	+ 85 C	1337AGD	SMD/SMT	Tube
Real Time Clock 1338D-31 REAL TIME CLOCK 1338D-31DVGI Renesas Electronics 1: Rp53.203,40 384Expected 18/02/2028	Mfr. Part No. 1338D-31DVGI Mouser Part No 972-1338D-31DVGI	Renesas Electronics	Real Time Clock 1338D-31 REAL TIME CLOCK	Datasheet	384Expected 18/02/2028	Rp53.203,40 Rp39.810,82 Rp36.325,08 Rp32.472,42 Rp30.270,90	Min.: 1 Mult.: 1										1338		Tube
Real Time Clock Real Time Clock 1339-31DVGI Renesas Electronics 1: Rp61.826,02 57On Order	Mfr. Part No. 1339-31DVGI Mouser Part No 972-1339-31DVGI	Renesas Electronics	Real Time Clock Real Time Clock	Datasheet	57On Order	Rp61.826,02 Rp46.231,92 Rp45.131,16 Rp43.480,02 View Rp42.562,72 Rp42.195,80 Rp33.573,18	Min.: 1 Mult.: 1	Serial 2-Wire, I2C	YY-MM-DD-dd	HH:MM:SS:hh (12 hr, 24 hr)	TSSOP-8	Backup Switching	1.3 V	3.7 V	- 40 C	+ 85 C	1339	SMD/SMT	Tube
Real Time Clock Parallel RTC A 595-B Q4802LYPWR A 595-BQ A 595-BQ4802LYPWR BQ4802LYPW Texas Instruments 1: Rp185.111,14 199Expected 20/05/2027 End of Life	Mfr. Part No. BQ4802LYPW Mouser Part No 595-BQ4802LYPW End of Life	Texas Instruments	Real Time Clock Parallel RTC A 595-B Q4802LYPWR A 595-BQ A 595-BQ4802LYPWR	Datasheet	199Expected 20/05/2027	Rp185.111,14 Rp149.519,90 Rp126.954,32 Rp115.029,42 View Rp114.112,12 Rp112.094,06 Rp110.076,00 Quote	Min.: 1 Mult.: 1	Parallel	YY-MM-DD-dd	HH:MM:SS (24 hr)	TSSOP-28	Backup Switching	2.7 V	3.6 V	0 C	+ 70 C	BQ4802LY	SMD/SMT	Tube
Real Time Clock 3.0Volt -40 to 85C I2C BUS RX-8035LC:B3 PURE SN Epson Timing 1: Rp183.460,00 500Expected 06/11/2026	Mfr. Part No. RX-8035LC:B3 PURE SN Mouser Part No 732-RX-8035LC:B3	Epson Timing	Real Time Clock 3.0Volt -40 to 85C I2C BUS	Datasheet	500Expected 06/11/2026	Cut Tape Rp183.460,00 Rp142.731,88 Rp132.641,58 Rp121.450,52 Reel Rp115.396,34 View Rp111.910,60 Rp109.709,08 Quote MouseReel Available	Min.: 1 Mult.: 1 : 250	I2C	YY-MM-DD-dd	HH:MM:SS (24 hr)	VSOJ-12	Backup Switching	2.4 V	5.5 V	- 40 C	+ 85 C	RX-8035LC	SMD/SMT	Reel, Cut Tape, MouseReel
Real Time Clock RX4901CE XB C0 REAL TIME CLOCK MODULE SPI-Bus 3.0V +/-5ppm 2k TR RX4901CE XB C06 Epson Timing 1: Rp84.941,98 1.023Expected 28/12/2026	Mfr. Part No. RX4901CE XB C06 Mouser Part No 732-RX4901CEXBC06	Epson Timing	Real Time Clock RX4901CE XB C0 REAL TIME CLOCK MODULE SPI-Bus 3.0V +/-5ppm 2k TR Learn More about Epson Timing epson rx8901ce rx4901ce real time clock modules	Datasheet	1.023Expected 28/12/2026	Cut Tape Rp84.941,98 Rp64.211,00 Rp59.074,12 Rp53.386,86 View Reel Rp45.498,08 Rp50.634,96 Rp49.901,12 Rp47.332,68 Rp45.498,08 MouseReel Available	Min.: 1 Mult.: 1 : 2.000	I2C	YY-MM-DD-dd	HH:MM:SS (24 hr)		Backup Switching	1.6 V	5.5 V	- 40 C	+ 105 C	RX4901CE	SMD/SMT	Reel, Cut Tape, MouseReel
Real Time Clock RX8111CE:B3 REAL TIME CLOCK I2C-BUS 3.0V 23PPM 250TR RX8111CE B3 Epson Timing 1: Rp66.229,06 1.750On Order	Mfr. Part No. RX8111CE B3 Mouser Part No 732-RX8111CEB3	Epson Timing	Real Time Clock RX8111CE:B3 REAL TIME CLOCK I2C-BUS 3.0V 23PPM 250TR Learn More about Epson Timing epson rx4111ce rx8111ce rtc modules	Datasheet	1.750On Order On Order Ship Dates Mfr. No: RX8111CE B3 Stock: 0 On Order: 750 Expected 04/11/2026 500 Expected 12/11/2026 500 Expected 26/04/2027 Factory Lead Time: 20 Weeks	Cut Tape Rp66.229,06 Rp49.534,20 Rp45.314,62 Rp40.728,12 Reel Rp36.508,54 View Rp35.224,32 Rp34.123,56 MouseReel Available	Min.: 1 Mult.: 1 : 250	Serial 2-Wire, I2C	YY-MM-DD-dd	HH:MM:SS (24 hr)		Backup Switching	1.6 V	5.5 V	- 40 C	+ 85 C	RX8111CE	SMD/SMT	Reel, Cut Tape, MouseReel
Real Time Clock 32.768kHz-DTCXO 3.4ppm I2C-Bus RX8900CE UA0 Epson Timing 1: Rp72.833,62 886Expected 12/11/2026	Mfr. Part No. RX8900CE UA0 Mouser Part No 732-RX8900CEUA0	Epson Timing	Real Time Clock 32.768kHz-DTCXO 3.4ppm I2C-Bus Learn More about Epson Timing epson rx8900ce rtc modules	Datasheet	886Expected 12/11/2026	Cut Tape Rp72.833,62 Rp55.038,00 Rp50.634,96 Rp45.681,54 View Reel Rp41.278,50 Rp43.296,56 Rp42.195,80 Rp41.278,50 MouseReel Available	Min.: 1 Mult.: 1 : 1.000	I2C	YY-MM-DD-dd	HH:MM:SS (24 hr)		Backup Switching	2.5 V	5.5 V	- 40 C	+ 85 C	RX8900CE	SMD/SMT	Reel, Cut Tape, MouseReel
Real Time Clock RX8901CE XS A0 REAL TIME CLOCK MODULE I2C-Bus 3.0V +/-3ppm 2k TR RX8901CE XS A06 Epson Timing 1: Rp110.626,38 2.000Expected 07/12/2026	Mfr. Part No. RX8901CE XS A06 Mouser Part No 732-RX8901CEXSA06	Epson Timing	Real Time Clock RX8901CE XS A0 REAL TIME CLOCK MODULE I2C-Bus 3.0V +/-3ppm 2k TR Learn More about Epson Timing epson rx8901ce rx4901ce real time clock modules	Datasheet	2.000Expected 07/12/2026	Cut Tape Rp110.626,38 Rp84.758,52 Rp78.337,42 Rp71.182,48 View Reel Rp62.743,32 Rp67.880,20 Rp67.146,36 Rp62.743,32 MouseReel Available	Min.: 1 Mult.: 1 : 2.000	I2C	YY-MM-DD-dd	HH:MM:SS (24 hr)		No Backup Switching	1.6 V	5.5 V	- 40 C	+ 105 C	RX8901CE	SMD/SMT	Reel, Cut Tape, MouseReel
Real Time Clock Real Time Clock TSSOP-8 T&R 2.5K PT7C4563CLEX Diodes Incorporated 2.500: Rp8.549,24 17.500Factory Stock Available New Product	Mfr. Part No. PT7C4563CLEX Mouser Part No 621-PT7C4563CLEX New Product	Diodes Incorporated	Real Time Clock Real Time Clock TSSOP-8 T&R 2.5K	Datasheet	17.500Factory Stock Available More Info Available	Reel Rp8.549,24	Min.: 2.500 Mult.: 2.500 : 2.500	I2C	BCD	BCD	TSSOP-8		1.3 V	5.5 V	- 40 C	+ 85 C	PT7C4563C	SMD/SMT	Reel
Real Time Clock RX4111CE:B3 REAL TIME CLOCK SPI-BUS 3.0V 23PPM 250TR RX4111CE B3 Epson Timing 1: Rp71.549,40 250Expected 03/02/2027	Mfr. Part No. RX4111CE B3 Mouser Part No 732-RX4111CEB3	Epson Timing	Real Time Clock RX4111CE:B3 REAL TIME CLOCK SPI-BUS 3.0V 23PPM 250TR Learn More about Epson Timing epson rx4111ce rx8111ce rtc modules	Datasheet	250Expected 03/02/2027	Cut Tape Rp71.549,40 Rp53.937,24 Rp49.534,20 Rp44.764,24 Reel Rp41.645,42 View Rp41.095,04 Rp39.260,44 Rp38.710,06 Rp38.343,14 MouseReel Available	Min.: 1 Mult.: 1 : 250	Serial 4-Wire, SPI				Backup Switching	1.6 V	5.5 V	- 40 C	+ 85 C	RX4111CE	SMD/SMT	Reel, Cut Tape, MouseReel
Real Time Clock I2C GP RTCC 64B SRAM ID MCP79400T-I/MNY Microchip Technology 1: Rp20.364,06 Non-Stocked Lead-Time 12 Weeks	Mfr. Part No. MCP79400T-I/MNY Mouser Part No 579-MCP79400TIMNY	Microchip Technology	Real Time Clock I2C GP RTCC 64B SRAM ID Learn More about Microchip Technology microchip mcp7940n calendar	Datasheet	Non-Stocked Lead-Time 12 Weeks	Cut Tape Rp20.364,06 Reel Rp16.951,70	Min.: 1 Mult.: 1 : 3.300												Reel, Cut Tape
Real Time Clock I2C GP RTCC 64B SRAM ID MCP79400T-I/ST Microchip Technology 2.500: Rp16.236,21 Non-Stocked Lead-Time 10 Weeks	Mfr. Part No. MCP79400T-I/ST Mouser Part No 579-MCP79400TIST	Microchip Technology	Real Time Clock I2C GP RTCC 64B SRAM ID Learn More about Microchip Technology microchip mcp7940n calendar	Datasheet	Non-Stocked Lead-Time 10 Weeks	Reel Rp16.236,21	Min.: 2.500 Mult.: 2.500 : 2.500												Reel
Real Time Clock I2C GP RTCC 64B SRAM EUI-48 MCP79401T-I/MS Microchip Technology 2.500: Rp18.125,85 Non-Stocked Lead-Time 9 Weeks	Mfr. Part No. MCP79401T-I/MS Mouser Part No 579-MCP79401TIMS	Microchip Technology	Real Time Clock I2C GP RTCC 64B SRAM EUI-48 Learn More about Microchip Technology microchip mcp7940n calendar	Datasheet	Non-Stocked Lead-Time 9 Weeks	Reel Rp18.125,85	Min.: 2.500 Mult.: 2.500 : 2.500												Reel
Real Time Clock I2C GP RTCC 64B SRAM EUI-48 MCP79401T-I/SN Microchip Technology 3.300: Rp16.951,70 Non-Stocked Lead-Time 10 Weeks	Mfr. Part No. MCP79401T-I/SN Mouser Part No 579-MCP79401TISN	Microchip Technology	Real Time Clock I2C GP RTCC 64B SRAM EUI-48 Learn More about Microchip Technology microchip mcp7940n calendar	Datasheet	Non-Stocked Lead-Time 10 Weeks	Reel Rp16.951,70	Min.: 3.300 Mult.: 3.300 : 3.300												Reel
Real Time Clock I2C GP RTCC 64B SRAM EUI-48 MCP79401T-I/ST Microchip Technology 2.500: Rp18.125,85 Non-Stocked Lead-Time 10 Weeks	Mfr. Part No. MCP79401T-I/ST Mouser Part No 579-MCP79401TIST	Microchip Technology	Real Time Clock I2C GP RTCC 64B SRAM EUI-48 Learn More about Microchip Technology microchip mcp7940n calendar	Datasheet	Non-Stocked Lead-Time 10 Weeks	Reel Rp18.125,85	Min.: 2.500 Mult.: 2.500 : 2.500												Reel
Real Time Clock I2C GP RTCC 64B SRAM EUI-64 MCP79402-I/ST Microchip Technology 1: Rp19.813,68 Non-Stocked Lead-Time 10 Weeks	Mfr. Part No. MCP79402-I/ST Mouser Part No 579-MCP79402IST	Microchip Technology	Real Time Clock I2C GP RTCC 64B SRAM EUI-64 Learn More about Microchip Technology microchip mcp7940n calendar	Datasheet	Non-Stocked Lead-Time 10 Weeks	Rp19.813,68 Rp18.529,46 Rp18.125,85	Min.: 1 Mult.: 1	Serial 2-Wire, I2C	YY-MM-DD-dd	HH:MM:SS:hh (12 hr, 24 hr)	TSSOP-8	Backup Switching	1.8 V	5.5 V	- 40 C	+ 85 C		SMD/SMT	Tube
Real Time Clock I2C GP RTCC 64B SRAM EUI-64 MCP79402T-I/MNY Microchip Technology 3.300: Rp18.896,38 Non-Stocked Lead-Time 12 Weeks	Mfr. Part No. MCP79402T-I/MNY Mouser Part No 579-MCP79402TIMNY	Microchip Technology	Real Time Clock I2C GP RTCC 64B SRAM EUI-64 Learn More about Microchip Technology microchip mcp7940n calendar	Datasheet	Non-Stocked Lead-Time 12 Weeks	Reel Rp18.896,38	Min.: 3.300 Mult.: 3.300 : 3.300												Reel
Real Time Clock I2C GP RTCC 64B SRAM EUI-64 MCP79402T-I/MS Microchip Technology 2.500: Rp18.125,85 Non-Stocked Lead-Time 9 Weeks	Mfr. Part No. MCP79402T-I/MS Mouser Part No 579-MCP79402TIMS	Microchip Technology	Real Time Clock I2C GP RTCC 64B SRAM EUI-64 Learn More about Microchip Technology microchip mcp7940n calendar	Datasheet	Non-Stocked Lead-Time 9 Weeks	Reel Rp18.125,85	Min.: 2.500 Mult.: 2.500 : 2.500												Reel