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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 (GBP) 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 1.6-5.5V RX8804CE:XA3 Epson Timing 1: £7.93 257In Stock	Mfr. Part No. RX8804CE:XA3 Mouser Part No 732-RX8804CE:XA3	Epson Timing	Real Time Clock 1.6-5.5V Learn More about Epson Timing epson rx8804ce clock modules	Datasheet	257In Stock	Cut Tape £7.93 £6.17 £5.52 £5.44 Reel £4.62 Quote Quote MouseReel Available	Min.: 1 Mult.: 1 : 250	I2C	YY-MM-DD-dd	HH:MM:SS (24 hr)		No Backup Switching	1.6 V	5.5 V	- 40 C	+ 105 C	RX8804CE	SMD/SMT	Reel, Cut Tape, MouseReel
Real Time Clock I2C-BUS RTC +/-5.0PPM-30 70C SOP-14 PIN BULK RX8900SA:UCB PURE SN Epson Timing 1: £4.49 99In Stock	Mfr. Part No. RX8900SA:UCB PURE SN Mouser Part No 732-X8900SAUCBPURESN	Epson Timing	Real Time Clock I2C-BUS RTC +/-5.0PPM-30 70C SOP-14 PIN BULK Learn More about Epson Timing epson rx8900sa rtc modules	Datasheet	99In Stock	£4.49 £3.44 £3.18 £2.94 View £2.82 £2.75 £2.73 £2.68 Quote	Min.: 1 Mult.: 1										RX8900SA		Bulk
Real Time Clock 32.768kHz-DTCXO 5ppm I2C-Bus RX8900SA UB0 PURE SN Epson Timing 1: £2.29 543In Stock	Mfr. Part No. RX8900SA UB0 PURE SN Mouser Part No 732-RX8900SAUB0SN	Epson Timing	Real Time Clock 32.768kHz-DTCXO 5ppm I2C-Bus Learn More about Epson Timing epson rx8900sa rtc modules	Datasheet	543In Stock	Cut Tape £2.29 £1.71 £1.56 £1.41 Reel £1.20 View £1.33 £1.32 £1.17 £1.14 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	RX8900SA	SMD/SMT	Reel, Cut Tape, MouseReel
Real Time Clock RX-8803LC:UB PURE SN I2C-BUS RTC +/-5.0PPM-40 85C VSOJ-12 PIN BULK RX-8803LCUB PURE SN BULK Epson Timing 1: £8.76 5In Stock	Mfr. Part No. RX-8803LCUB PURE SN BULK Mouser Part No 732-8803LCUBPRSNBULK	Epson Timing	Real Time Clock RX-8803LC:UB PURE SN I2C-BUS RTC +/-5.0PPM-40 85C VSOJ-12 PIN BULK Learn More about Epson Timing epson rx 8803lc trc module	Datasheet	5In Stock	£8.76 £6.30 £6.08 £5.84 View £5.73 £5.56 £5.49 Quote	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	RX-8803LC	SMD/SMT	Bulk
Real Time Clock Built-In TXCO Real Time Clock Module with I2C Bus AB-RTC-TH-32.768kHz-2-T3 ABRACON 1: £2.48 2,960In Stock New Product	Mfr. Part No. AB-RTC-TH-32.768kHz-2-T3 Mouser Part No 815-ABRTCTH32768K2T3 New Product	ABRACON	Real Time Clock Built-In TXCO Real Time Clock Module with I2C Bus Learn More about ABRACON ab rtc tx 32 modules	Datasheet	2,960In Stock	Cut Tape £2.48 £1.85 £1.69 £1.53 Reel £1.39 View £1.45 £1.41 £1.40 £1.34 MouseReel Available	Min.: 1 Mult.: 1 : 3,000	I2C				Backup Switching	1.6 V	5.5 V	- 40 C	+ 85 C	AB-RTC-TH-32.768kHz-2	SMD/SMT	Reel, Cut Tape, MouseReel
Real Time Clock Built-In TXCO Real Time Clock Module with I2C Bus AB-RTC-TA-32.768kHz-2-T3 ABRACON 1: £1.42 2,348In Stock New Product	Mfr. Part No. AB-RTC-TA-32.768kHz-2-T3 Mouser Part No 815-ABRTCTA32768K2T3 New Product	ABRACON	Real Time Clock Built-In TXCO Real Time Clock Module with I2C Bus Learn More about ABRACON ab rtc tx 32 modules	Datasheet	2,348In Stock	Cut Tape £1.42 £1.05 £0.943 £0.841 Reel £0.746 View £0.826 £0.651 MouseReel Available	Min.: 1 Mult.: 1 : 3,000	I2C			SOP-8	Backup Switching	1.6 V	5.5 V	- 40 C	+ 85 C	AB-RTC-TA-32.768kHz-2	SMD/SMT	Reel, Cut Tape, MouseReel
Real Time Clock Built-In TXCO Real Time Clock Module with I2C Bus AB-RTC-TC-32.768kHz-2-T ABRACON 1: £2.76 2,049In Stock New Product	Mfr. Part No. AB-RTC-TC-32.768kHz-2-T Mouser Part No 815-ABRTCTC32768K2T3 New Product	ABRACON	Real Time Clock Built-In TXCO Real Time Clock Module with I2C Bus Learn More about ABRACON ab rtc tx 32 modules	Datasheet	2,049In Stock	Cut Tape £2.76 £2.08 £1.90 £1.73 Reel £1.53 View £1.63 £1.58 £1.47 MouseReel Available	Min.: 1 Mult.: 1 : 1,300	I2C				Backup Switching	1.6 V	5.5 V	- 40 C	+ 85 C	AB-RTC-TC-32.768kHz-2	SMD/SMT	Reel, Cut Tape, MouseReel
Real Time Clock Built-In XO Real Time Clock Module with I2C Bus AB-RTC-XB-32.768kHz-2-T3 ABRACON 1: £1.99 1,968In Stock New Product	Mfr. Part No. AB-RTC-XB-32.768kHz-2-T3 Mouser Part No 815-ABRTCXB32768K2T3 New Product	ABRACON	Real Time Clock Built-In XO Real Time Clock Module with I2C Bus Learn More about ABRACON ab rtc xb 32 module	Datasheet	1,968In Stock	Cut Tape £1.99 £1.48 £1.35 £1.20 Reel £1.10 View £1.15 £1.10 £1.09 MouseReel Available	Min.: 1 Mult.: 1 : 3,000	I2C				Backup Switching	1.2 V	5.5 V	- 40 C	+ 85 C	AB-RTC-XB-32.768kHz-2	SMD/SMT	Reel, Cut Tape, MouseReel
Real Time Clock 32.768kHz I2C 20ppm 2.0x1.2x0.7mm RV-8263-C8 32.768kHz-20PPM-TA-QC Micro Crystal 1: £1.42 4,324In Stock	Mfr. Part No. RV-8263-C8 32.768kHz-20PPM-TA-QC Mouser Part No 428-204208-MC01	Micro Crystal	Real Time Clock 32.768kHz I2C 20ppm 2.0x1.2x0.7mm Learn More about Micro Crystal rv 8263 c8 rtc modules	Datasheet	4,324In Stock	Cut Tape £1.42 £1.05 £0.934 £0.828 Reel £0.746 View £0.779 £0.747 £0.706 MouseReel Available	Min.: 1 Mult.: 1 : 1,000	I2C	YY-MM-DD-dd	HH:MM:SS:hh (12 hr, 24 hr)	SON-8		900 mV	5.5 V	- 40 C	+ 85 C	RV-8263-C8	SMD/SMT	Reel, Cut Tape, MouseReel
Real Time Clock 32.768kHz I2C 2.5ppm 3.2x1.5x0.8mm Temperature Sensor & Real Time Clock RV-3032-C7 32.768kHz-2.5PPM-TA-QC Micro Crystal 1: £3.12 16,722In Stock 36,000Expected 04/11/2026	Mfr. Part No. RV-3032-C7 32.768kHz-2.5PPM-TA-QC Mouser Part No 428-203803-MG01	Micro Crystal	Real Time Clock 32.768kHz I2C 2.5ppm 3.2x1.5x0.8mm Temperature Sensor & Real Time Clock Learn More about Micro Crystal rv 3032 c7 rtc module	Datasheet	16,722In Stock 36,000Expected 04/11/2026	Cut Tape £3.12 £2.34 £2.15 £1.93 Reel £1.76 View £1.83 £1.79 £1.74 £1.57 MouseReel Available	Min.: 1 Mult.: 1 : 1,000	Serial 2-Wire, I2C	YY-MM-DD-dd	HH:MM:SS:hh (12 hr, 24 hr)		Backup Switching	1.3 V	5.5 V	- 40 C	+ 105 C	RV-3032-C7	SMD/SMT	Reel, Cut Tape, MouseReel
Real Time Clock I2C GP RTCC 1Kb EE 64B SRAM ID MCP79410T-I/SN Microchip Technology 1: £0.834 15,679In Stock	Mfr. Part No. MCP79410T-I/SN Mouser Part No 579-MCP79410T-I/SN	Microchip Technology	Real Time Clock I2C GP RTCC 1Kb EE 64B SRAM ID Learn More about Microchip Technology microchip mcp794xx calendars	Datasheet	15,679In Stock	Cut Tape £0.834 Reel £0.703 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 32.768 KHZ IC RTC CLK AB-RTCMC-32.768kHz-EOA9-S3-DBT ABRACON 1: £6.36 3,378In Stock	Mfr. Part No. AB-RTCMC-32.768kHz-EOA9-S3-DBT Mouser Part No 815-ABMC-327EOA9S3DB	ABRACON	Real Time Clock 32.768 KHZ IC RTC CLK Learn More about ABRACON Abracon ABRTC MC	Datasheet	3,378In Stock	Cut Tape £6.36 £4.93 £4.48 £4.15 Reel £3.73 View £3.96 £3.88 £3.60 MouseReel Available	Min.: 1 Mult.: 1 : 1,000	SPI	YY-MM-DD-dd	HH:MM:SS (24 hr)		Backup Switching	1.4 V	5.5 V	- 40 C	+ 125 C	AB-RTCMC	SMD/SMT	Reel, Cut Tape, MouseReel
Real Time Clock Trickle-Charge Timekeeping Chip DS1302ZN+T&R Analog Devices / Maxim Integrated 1: £4.82 4,691In Stock	Mfr. Part No. DS1302ZN+T&R Mouser Part No 700-DS1302ZNT&R	Analog Devices / Maxim Integrated	Real Time Clock Trickle-Charge Timekeeping Chip Learn More about Analog Devices / Maxim Integrated maxim ds1302 timekeeping chip	Datasheet	4,691In Stock	Cut Tape £4.82 £3.69 £3.41 £3.11 £3.05 Reel £2.61 MouseReel Available	Min.: 1 Mult.: 1 Max.: 3,752 : 2,500	Serial 3-Wire	YY-MM-DD-dd	HH:MM:SS (24 hr)	SOIC-8	Backup Switching	2 V	5.5 V	- 40 C	+ 85 C	DS1302ZN	SMD/SMT	Reel, Cut Tape, MouseReel
Real Time Clock 64 x 8, Serial, I C Real-Time Clock DS1307Z+T&R Analog Devices / Maxim Integrated 1: £4.39 10,747In Stock	Mfr. Part No. DS1307Z+T&R Mouser Part No 700-DS1307ZT&R	Analog Devices / Maxim Integrated	Real Time Clock 64 x 8, Serial, I C Real-Time Clock Learn More about Analog Devices / Maxim Integrated maxim ds1307	Datasheet	10,747In Stock	Cut Tape £4.39 £3.35 £3.08 £2.80 £2.75 Reel £2.34 MouseReel Available	Min.: 1 Mult.: 1 Max.: 8,597 : 2,500	I2C	YY-MM-DD	HH:MM:SS:hh (12 hr, 24 hr)	SOIC-8	Backup Switching	4.5 V	5.5 V	0 C	+ 70 C	DS1307Z	SMD/SMT	Reel, Cut Tape, MouseReel
Real Time Clock I C RTC with Trickle Charger DS1340U-33+T&R Analog Devices / Maxim Integrated 1: £4.89 5,993In Stock	Mfr. Part No. DS1340U-33+T&R Mouser Part No 700-DS1340U-33T&R	Analog Devices / Maxim Integrated	Real Time Clock I C RTC with Trickle Charger Learn More about Analog Devices / Maxim Integrated maximds1343	Datasheet	5,993In Stock	Cut Tape £4.89 £3.75 £3.46 £3.15 £3.07 Reel £2.70 MouseReel Available	Min.: 1 Mult.: 1 Max.: 4,794 : 3,000	Serial 2-Wire, I2C	YY-MM-DD-dd	HH:MM:SS (24 hr)	uSOP-8	Backup Switching	2.97 V	5.5 V	- 40 C	+ 85 C	DS1340U	SMD/SMT	Reel, Cut Tape, MouseReel
Real Time Clock Low-Voltage SPI/3-Wire RTCs with Trickle DS1394U-33+T&R Analog Devices / Maxim Integrated 1: £4.86 5,058In Stock	Mfr. Part No. DS1394U-33+T&R Mouser Part No 700-DS1394U-33T&R	Analog Devices / Maxim Integrated	Real Time Clock Low-Voltage SPI/3-Wire RTCs with Trickle	Datasheet	5,058In Stock	Cut Tape £4.86 £3.73 £3.45 £3.13 View Reel £2.78 £2.98 £2.92 £2.78 MouseReel Available	Min.: 1 Mult.: 1 Max.: 4,070 : 3,000	Serial 3-Wire, 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	DS1394U	SMD/SMT	Reel, Cut Tape, MouseReel
Real Time Clock Y2K-Compliant, Nonvolatile Timekeeping R DS1746-70+ Analog Devices / Maxim Integrated 1: £52.72 456In Stock	Mfr. Part No. DS1746-70+ Mouser Part No 700-DS1746-70	Analog Devices / Maxim Integrated	Real Time Clock Y2K-Compliant, Nonvolatile Timekeeping R	Datasheet	456In Stock	£52.72 £43.55 £41.25 £40.73	Min.: 1 Mult.: 1 Max.: 365	Parallel	YY-MM-DD-dd	HH:MM:SS (24 hr)	EDIP-32	Integrated Battery	4.5 V	5.5 V	0 C	+ 70 C	DS1746	Through Hole	Tube
Real Time Clock 5ppm, I C Real-Time Clock with SRAM DS3232MZ+TRL Analog Devices / Maxim Integrated 1: £10.54 5,095In Stock	Mfr. Part No. DS3232MZ+TRL Mouser Part No 700-DS3232MZ+TRL	Analog Devices / Maxim Integrated	Real Time Clock 5ppm, I C Real-Time Clock with SRAM	Datasheet	5,095In Stock	Cut Tape £10.54 £8.28 £7.71 £7.10 View Reel £6.22 £6.98 £6.77 £6.69 £6.22 MouseReel Available	Min.: 1 Mult.: 1 Max.: 4,088 : 2,500	Serial 2-Wire, I2C	YY-MM-DD-dd	HH:MM:SS:hh (12 hr, 24 hr)	SO-8	Backup Switching	2.3 V	4.5 V	- 40 C	+ 85 C	DS3232MZ	SMD/SMT	Reel, Cut Tape, MouseReel
Real Time Clock Extremely Accurate I C RTC with Integrat DS3232SN#T&R Analog Devices / Maxim Integrated 1: £12.15 9,003In Stock	Mfr. Part No. DS3232SN#T&R Mouser Part No 700-DS3232SN#T&R-	Analog Devices / Maxim Integrated	Real Time Clock Extremely Accurate I C RTC with Integrat	Datasheet	9,003In Stock	Cut Tape £12.15 £9.63 £8.97 £8.23 View Reel £7.50 £8.16 £7.68 £7.50 Quote MouseReel Available	Min.: 1 Mult.: 1 Max.: 7,202 : 1,000	I2C	YY-MM-DD-dd	HH:MM:SS:hh (12 hr, 24 hr)	SO-20	Backup Switching	2.3 V	5.5 V	- 40 C	+ 85 C	DS3232SN	SMD/SMT	Reel, Cut Tape, MouseReel
Real Time Clock Automotive high-spee d CMOS timer with i TLC3555QDRQ1 Texas Instruments 1: £0.811 4,862In Stock	Mfr. Part No. TLC3555QDRQ1 Mouser Part No 595-TLC3555QDRQ1	Texas Instruments	Real Time Clock Automotive high-spee d CMOS timer with i Learn More about Texas Instruments ti tlc3555 q1 high speed cmos timer	Datasheet	4,862In Stock	Cut Tape £0.811 £0.578 £0.52 £0.458 View Reel £0.396 £0.428 £0.41 £0.396 £0.396 MouseReel Available	Min.: 1 Mult.: 1 Max.: 1,001 : 3,000				SOIC-8	No Backup Switching	1.5 V	18 V	- 40 C	+ 125 C	TLC3555	SMD/SMT	Reel, Cut Tape, MouseReel
Real Time Clock 32.768 kHz +/-20 PPM I2C -40/+85C RV-4162-C7-32.768kHz-20PPM-TA-QC Micro Crystal 1: £2.51 15,187In Stock	Mfr. Part No. RV-4162-C7-32.768kHz-20PPM-TA-QC Mouser Part No 428-200007-MG01	Micro Crystal	Real Time Clock 32.768 kHz +/-20 PPM I2C -40/+85C Learn More about Micro Crystal real time clock modules	Datasheet	15,187In Stock	Cut Tape £2.51 £1.87 £1.69 £1.53 Reel £1.34 View £1.44 £1.40 £1.31 £1.28 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 V	4.4 V	- 40 C	+ 85 C	RV-4162-C7	SMD/SMT	Reel, Cut Tape, MouseReel
Real Time Clock 32.768 kHz +/-3 PPM I2C -40/+85C RV-8803-C7-32.768KHZ-3PPM-TA-QC Micro Crystal 1: £2.79 14,412In Stock 78,000On 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	14,412In Stock 78,000On Order On Order Ship Dates Mfr. No: RV-8803-C7-32.768KHZ-3PPM-TA-QC Stock: 14,412 Can Dispatch Immediately On Order: 44,000 Expected 30/04/2027 34,000 TBD Factory Lead Time: 39 Weeks	Cut Tape £2.79 £2.14 £1.98 £1.77 View Reel £1.56 £1.68 £1.65 £1.56 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 I2C bus RTC M41T82ZM6F STMicroelectronics 1: £2.66 7,927In Stock	Mfr. Part No. M41T82ZM6F Mouser Part No 511-M41T82ZM6F	STMicroelectronics	Real Time Clock Serial I2C bus RTC	Datasheet	7,927In Stock	Cut Tape £2.66 £2.01 £1.84 £1.65 Reel £1.46 View £1.56 £1.53 £1.48 £1.43 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	2.38 V	5.5 V	- 40 C	+ 85 C	M41T82	SMD/SMT	Reel, Cut Tape, MouseReel
Real Time Clock Serial SPI bus RTC M41T93RMY6F STMicroelectronics 1: £8.01 5,229In Stock 1,000Expected 08/10/2026	Mfr. Part No. M41T93RMY6F Mouser Part No 511-M41T93RMY6F	STMicroelectronics	Real Time Clock Serial SPI bus RTC	Datasheet	5,229In Stock 1,000Expected 08/10/2026	Cut Tape £8.01 £6.25 £5.82 £5.33 Reel £4.85 View £5.11 £5.05 £4.71 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	2.7 V	5.5 V	- 40 C	+ 85 C	M41T93	SMD/SMT	Reel, Cut Tape, MouseReel
Real Time Clock 64K (8Kx8) 100ns M48T18-100PC1 STMicroelectronics 1: £35.26 1,361In Stock	Mfr. Part No. M48T18-100PC1 Mouser Part No 511-M48T1810PC1	STMicroelectronics	Real Time Clock 64K (8Kx8) 100ns	Datasheet	1,361In Stock	£35.26 £28.50 £26.75 £26.21	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	M48T18	Through Hole	Tube