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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 3V/5V Real-Time Clocks DS17287-5+ Analog Devices / Maxim Integrated 1: $34.02 1In Stock	Mfr. Part # DS17287-5+ Mouser Part # 700-DS17287-5	Analog Devices / Maxim Integrated	Real Time Clock 3V/5V Real-Time Clocks	Datasheet	1In Stock	$34.02 $27.03 $25.56 $23.76 View $22.93 $22.65 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	DS17287	Through Hole	Tube
Real Time Clock Y2K-Compliant, Nonvolatile Timekeeping R DS1744W-120+ Analog Devices / Maxim Integrated 1: $62.46 15In Stock	Mfr. Part # DS1744W-120+ Mouser Part # 700-DS1744W-120	Analog Devices / Maxim Integrated	Real Time Clock Y2K-Compliant, Nonvolatile Timekeeping R	Datasheet	15In Stock	$62.46 $51.59 $48.86 $48.25 View Quote	Min.: 1 Mult.: 1	Parallel	YY-MM-DD-dd	HH:MM:SS (24 hr)	EDIP-28	Integrated Battery	2.97 V	3.63 V	0 C	+ 70 C	DS1744W	Through Hole	Tube
Real Time Clock Y2K-Compliant, Nonvolatile Timekeeping R DS1744W-120IND+ Analog Devices / Maxim Integrated 1: $65.63 15In Stock	Mfr. Part # DS1744W-120IND+ Mouser Part # 700-DS1744W-120IND	Analog Devices / Maxim Integrated	Real Time Clock Y2K-Compliant, Nonvolatile Timekeeping R	Datasheet	15In Stock	$65.63 $54.21 $51.34 $50.70 View Quote	Min.: 1 Mult.: 1	Parallel	YY-MM-DD-dd	HH:MM:SS (24 hr)	EDIP-28	Integrated Battery	2.97 V	3.63 V	- 40 C	+ 85 C	DS1744W	Through Hole	Tube
Real Time Clock 3V/5V Real-Time Clocks DS17485S-5+ Analog Devices / Maxim Integrated 1: $14.28 5In Stock	Mfr. Part # DS17485S-5+ Mouser Part # 700-DS17485S-5	Analog Devices / Maxim Integrated	Real Time Clock 3V/5V Real-Time Clocks	Datasheet	5In Stock	$14.28 $13.97 $13.67 $13.39 View $13.19 $12.99 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	DS17485S	SMD/SMT	Tube
Real Time Clock 3V/5V Real-Time Clocks DS17887-3IND+ Analog Devices / Maxim Integrated 1: $41.79 1In Stock	Mfr. Part # DS17887-3IND+ Mouser Part # 700-DS17887-3IND+	Analog Devices / Maxim Integrated	Real Time Clock 3V/5V Real-Time Clocks	Datasheet	1In Stock	$41.79 $40.87 $39.98 $39.18 View $38.58 Quote	Min.: 1 Mult.: 1	Multiplexed	YY-MM-DD-dd	HH:MM:SS:hh (12 hr, 24 hr)	EDIP-24	Integrated Battery	2.7 V	3.7 V	- 40 C	+ 85 C	DS17887	Through Hole	Tube
Real Time Clock 1-Wire Time Chip With Interrupt DS2417P+ Analog Devices / Maxim Integrated 1: $4.92 185In Stock	Mfr. Part # DS2417P+ Mouser Part # 700-DS2417P	Analog Devices / Maxim Integrated	Real Time Clock 1-Wire Time Chip With Interrupt	Datasheet	185In Stock	$4.92 $3.75 $3.46 $3.13 View $2.97 $2.88 $2.84 $2.81 Quote	Min.: 1 Mult.: 1	Serial 1-Wire	Binary	Binary	TSOC-6	Backup Switching	2.2 V	6 V	- 40 C	+ 85 C	DS2417P	SMD/SMT	Tube
Real Time Clock Extremely Accurate I C-Integrated RTC/TC DS3231SN#T&R Analog Devices / Maxim Integrated 1: $16.69 1In Stock	Mfr. Part # DS3231SN#T&R Mouser Part # 700-DS3231SN#T&R-	Analog Devices / Maxim Integrated	Real Time Clock Extremely Accurate I C-Integrated RTC/TC Learn More about Analog Devices / Maxim Integrated maximds3231m	Datasheet	1In Stock	Cut Tape $16.69 $13.22 $12.35 $11.37 View $11.23 $10.87 $10.38 Quote MouseReel Available	Min.: 1 Mult.: 1	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	Reel, Cut Tape, MouseReel
Real Time Clock Extremely Accurate I C RTC with Integrat DS3232S#T&R Analog Devices / Maxim Integrated 1: $15.17 13In Stock	Mfr. Part # DS3232S#T&R Mouser Part # 700-DS3232S#T&R-	Analog Devices / Maxim Integrated	Real Time Clock Extremely Accurate I C RTC with Integrat	Datasheet	13In Stock	Cut Tape $15.17 $11.88 $11.06 $10.15 View $10.06 $10.04 $8.53 MouseReel Available	Min.: 1 Mult.: 1				SO-20				0 C	+ 70 C	DS3232S	SMD/SMT	Reel, Cut Tape, MouseReel
Real Time Clock ULTRA LO PWR CLK/CAL RTC IC PCF8563T/F4,118 NXP Semiconductors 1: $1.73 30In Stock	Mfr. Part # PCF8563T/F4,118 Mouser Part # 771-PCF8563TD-T	NXP Semiconductors	Real Time Clock ULTRA LO PWR CLK/CAL RTC IC	Datasheet	30In Stock	Cut Tape $1.73 $1.27 $1.15 $1.03 $0.87 View $0.969 $0.932 $0.927 $0.851 MouseReel Available	Min.: 1 Mult.: 1	I2C	YY-MM-DD-dd	HH:MM:SS (24 hr)	SOIC-8	No Backup Switching	1.8 V	5.5 V	- 40 C	+ 85 C	PCF8563	SMD/SMT	Reel, Cut Tape, MouseReel
Real Time Clock 256K (32Kx8) 100ns M48T37V-10MH1F STMicroelectronics 1: $25.10 56In Stock	Mfr. Part # M48T37V-10MH1F Mouser Part # 511-M48T37V-10MH1F	STMicroelectronics	Real Time Clock 256K (32Kx8) 100ns	Datasheet	56In Stock	Cut Tape $25.10 $20.06 $18.81 $17.43 View Reel $16.37 $16.77 $16.37 $16.37 MouseReel Available	Min.: 1 Mult.: 1 : 936	Parallel	YY-MM-DD-dd	HH:MM:SS (24 hr)	SOIC-44	Backup Switching	3 V	3.6 V	0 C	+ 70 C	M48T37V	SMD/SMT	Reel, Cut Tape, MouseReel
Real Time Clock Low Power High Stability +/-3 ppm -40 +85C I C Real Time Clock 3.2 x 2.5 mm ECS-RTC-3225-5699C3-TR ECS 1: $5.31 2,348In Stock	Mfr. Part # ECS-RTC-3225-5699C3-TR Mouser Part # 520-RTC-32255699C3TR	ECS	Real Time Clock Low Power High Stability +/-3 ppm -40 +85C I C Real Time Clock 3.2 x 2.5 mm Learn More about ECS rtc3225 rtcsop8 rtcs	Datasheet	2,348In Stock	Cut Tape $5.31 $4.05 $3.73 $3.38 View Reel $3.00 $3.22 $3.16 $3.15 $3.00 MouseReel Available	Min.: 1 Mult.: 1 : 3,000	I2C	YY-MM-DD	HH:MM:SS (24 hr)		Backup Switching	2.5 V	5 V	- 40 C	+ 85 C		SMD/SMT	Reel, Cut Tape, MouseReel
Real Time Clock Low Power High Stability 5 ppm -40 +85 C I C Real Time Clock 3.2 x 2.5 mm ECS-RTC-3225-5699HS-TR ECS 1: $5.72 783In Stock	Mfr. Part # ECS-RTC-3225-5699HS-TR Mouser Part # 520-RTC-32255699HSTR	ECS	Real Time Clock Low Power High Stability 5 ppm -40 +85 C I C Real Time Clock 3.2 x 2.5 mm Learn More about ECS rtc 3225 5699hs rtc	Datasheet	783In Stock	Cut Tape $5.72 $4.38 $4.04 $3.66 Reel $3.29 View $3.49 $3.43 $3.26 MouseReel Available	Min.: 1 Mult.: 1 : 1,000	I2C	YY-MM-DD	HH:MM:SS (24 hr)		Backup Switching	1.6 V	5 V	- 40 C	+ 85 C		SMD/SMT	Reel, Cut Tape, MouseReel
Real Time Clock 2-Wire Real-time Clock module PT7C43390LEX Diodes Incorporated 1: $1.78 324In Stock	Mfr. Part # PT7C43390LEX Mouser Part # 729-PT7C43390LEX	Diodes Incorporated	Real Time Clock 2-Wire Real-time Clock module Learn More about Diodes Incorporated diodes timing solutions	Datasheet	324In Stock	Cut Tape $1.78 $1.31 $1.19 $1.06 View Reel $0.888 $0.99 $0.952 $0.947 $0.888 MouseReel Available	Min.: 1 Mult.: 1 : 2,500												Reel, Cut Tape, MouseReel
Real Time Clock RX-4045SA:AA0 PURE SN 5+/-5PPM 1K T/R RX-4045SAAA0 PURE SN Epson Timing 1: $4.70 1,506In Stock	Mfr. Part # RX-4045SAAA0 PURE SN Mouser Part # 732-R4045SAAA0PURESN	Epson Timing	Real Time Clock RX-4045SA:AA0 PURE SN 5+/-5PPM 1K T/R Learn More about Epson Timing epson rx 4045sa realtime clock module	Datasheet	1,506In Stock	Cut Tape $4.70 $3.56 $3.27 $2.96 Reel $2.72 View $2.89 $2.83 $2.46	Min.: 1 Mult.: 1 : 1,000	Serial 4-Wire	YY-MM-DD-dd	HH:MM:SS (24 hr)		No Backup Switching	1.7 V	5.5 V	- 40 C	+ 85 C		SMD/SMT	Reel, Cut Tape
Real Time Clock RX-4045SA:AA3 PURE SN 5+/-5PPM 250 T/R RX-4045SAAA3 PURE SN Epson Timing 1: $9.57 703In Stock	Mfr. Part # RX-4045SAAA3 PURE SN Mouser Part # 732-RX-4045SA:AA3S	Epson Timing	Real Time Clock RX-4045SA:AA3 PURE SN 5+/-5PPM 250 T/R	Datasheet	703In Stock	Cut Tape $9.57 $7.45 $6.34 $5.91 Reel $5.64 View $5.60 Quote MouseReel Available	Min.: 1 Mult.: 1 : 250	Serial 4-Wire	YY-MM-DD-dd	HH:MM:SS (24 hr)	SOP-14	No Backup Switching	1.7 V	5.5 V	- 40 C	+ 85 C	RX-4045SA	SMD/SMT	Reel, Cut Tape, MouseReel
Real Time Clock I2C Bus 5 +/-23ppm RX-8025SA:AA0 Epson Timing 1: $4.10 1,052In Stock	Mfr. Part # RX-8025SA:AA0 Mouser Part # 732-RX-8025SA:AA0	Epson Timing	Real Time Clock I2C Bus 5 +/-23ppm Learn More about Epson Timing epson rx 8025sa rtc modules	Datasheet	1,052In Stock	Cut Tape $4.10 $3.09 $2.84 $2.56 Reel $2.27 View $2.43 $2.41 $2.22 MouseReel Available	Min.: 1 Mult.: 1 : 1,000	I2C	YY-MM-DD-dd	HH:MM:SS (24 hr)	SOP-14	No Backup Switching	1.7 V	5.5 V	- 40 C	+ 85 C	RX-8025SA	SMD/SMT	Reel, Cut Tape, MouseReel
Real Time Clock 32.768KHz 3.0Volts 5+/-5ppm -40C +85C RX-8025SA:AA3 Epson Timing 1: $8.75 453In Stock 500Expected 5/17/2027	Mfr. Part # RX-8025SA:AA3 Mouser Part # 732-RX-8025SA:AA3	Epson Timing	Real Time Clock 32.768KHz 3.0Volts 5+/-5ppm -40C +85C Learn More about Epson Timing epson rx 8025sa rtc modules	Datasheet	453In Stock 500Expected 5/17/2027	Cut Tape $8.75 $6.78 $5.68 $5.37 Reel $5.36 View $5.29 $5.15 Quote MouseReel Available	Min.: 1 Mult.: 1 : 250	I2C	YY-MM-DD-dd	HH:MM:SS (24 hr)	SOP-14	No Backup Switching	1.7 V	5.5 V	- 40 C	+ 85 C	RX-8025SA	SMD/SMT	Reel, Cut Tape, MouseReel
Real Time Clock I2C-BUS RTC +/-5.0PPM-30 70C SOP-14 PIN 250TR RX-8803SA:UB3 PURE SN Epson Timing 1: $4.71 976In Stock	Mfr. Part # RX-8803SA:UB3 PURE SN Mouser Part # 732-RX-8803SAUB3	Epson Timing	Real Time Clock I2C-BUS RTC +/-5.0PPM-30 70C SOP-14 PIN 250TR	Datasheet	976In Stock	Cut Tape $4.71 $3.56 $3.27 $2.96 Reel $2.81 View $2.69 $2.52	Min.: 1 Mult.: 1 : 250	I2C	YY-MM-DD-dd	HH:MM:SS (24 hr)	SOP-14	No Backup Switching	1.6 V	5.5 V	- 40 C	+ 85 C	RX-8803SA	SMD/SMT	Reel, Cut Tape
Real Time Clock RX4111CE:A3 REAL TIME CLOCK SPI-BUS 3.0V 11.5PPM 250TR RX4111CE A3 Epson Timing 1: $4.74 3,235In Stock	Mfr. Part # RX4111CE A3 Mouser Part # 732-RX4111CEA3	Epson Timing	Real Time Clock RX4111CE:A3 REAL TIME CLOCK SPI-BUS 3.0V 11.5PPM 250TR Learn More about Epson Timing epson rx4111ce rx8111ce rtc modules	Datasheet	3,235In Stock	Cut Tape $4.74 $3.57 $3.28 $2.89 Reel $2.86 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 RX4901CE XS C0 REAL TIME CLOCK MODULE SPI-Bus 3.0V +/-3ppm 2k TR RX4901CE XS C06 Epson Timing 1: $5.85 636In Stock	Mfr. Part # RX4901CE XS C06 Mouser Part # 732-RX4901CEXSC06	Epson Timing	Real Time Clock RX4901CE XS C0 REAL TIME CLOCK MODULE SPI-Bus 3.0V +/-3ppm 2k TR Learn More about Epson Timing epson rx8901ce rx4901ce real time clock modules	Datasheet	636In Stock	Cut Tape $5.85 $4.46 $4.11 $3.73 View Reel $3.30 $3.48 $3.32 $3.31 $3.30 Quote 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 REAL TIME CLOCK 3.0V 5+/-23PPM 1K TR RX6110SA:B0 PURE SN Epson Timing 1: $1.63 1,346In Stock	Mfr. Part # RX6110SA:B0 PURE SN Mouser Part # 732-RX6110SAB0PURESN	Epson Timing	Real Time Clock REAL TIME CLOCK 3.0V 5+/-23PPM 1K TR	Datasheet	1,346In Stock	Cut Tape $1.63 $1.33 $1.26 $1.19 Reel $1.17 View $1.18 $1.16 MouseReel Available	Min.: 1 Mult.: 1 : 1,000	Serial, I2C, SPI	YY-MM-DD-dd	HH:MM:SS (24 hr)		Backup Switching	1.6 V	5.5 V	- 40 C	+ 85 C	RX6110SA	SMD/SMT	Reel, Cut Tape, MouseReel
Real Time Clock 32.768kHz 5ppm I2C-Bus RX8130CE B0 Epson Timing 1: $1.42 16,409In Stock	Mfr. Part # RX8130CE B0 Mouser Part # 732-RX8130CEB0	Epson Timing	Real Time Clock 32.768kHz 5ppm I2C-Bus	Datasheet	16,409In Stock	Cut Tape $1.42 $1.03 $0.931 $0.825 Reel $0.719 View $0.774 $0.744 $0.687 $0.676 MouseReel Available	Min.: 1 Mult.: 1 : 1,000	Serial 2-Wire, 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 5ppm I2C-Bus RX8130CE B3 Epson Timing 1: $2.82 1,634In Stock	Mfr. Part # RX8130CE B3 Mouser Part # 732-RX8130CEB3	Epson Timing	Real Time Clock 32.768kHz 5ppm I2C-Bus	Datasheet	1,634In Stock	Cut Tape $2.82 $2.10 $1.93 $1.73 Reel $1.65 View $1.57 $1.51 $1.46 $1.45 MouseReel Available	Min.: 1 Mult.: 1 : 250	Serial 2-Wire, 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 I2C-BUS RTC +/-5.0PPM-40 85C 10 PIN 1K T/R RX8900CE:UB0 Epson Timing 1: $2.90 1,256In Stock	Mfr. Part # RX8900CE:UB0 Mouser Part # 732-RX8900CE:UB0	Epson Timing	Real Time Clock I2C-BUS RTC +/-5.0PPM-40 85C 10 PIN 1K T/R Learn More about Epson Timing epson rx8900ce rtc modules	Datasheet	1,256In Stock	Cut Tape $2.90 $2.16 $1.98 $1.78 Reel $1.57 View $1.68 $1.62 $1.43 $1.41 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:XB A0 REAL TIME CLOCK MODULE I2C-Bus 3.0V +/-5ppm 2k TR RX8901CE XB A06 Epson Timing 1: $4.51 3,163In Stock	Mfr. Part # RX8901CE XB A06 Mouser Part # 732-RX8901CEXBA06	Epson Timing	Real Time Clock RX8901CE:XB A0 REAL TIME CLOCK MODULE I2C-Bus 3.0V +/-5ppm 2k TR Learn More about Epson Timing epson rx8901ce rx4901ce real time clock modules	Datasheet	3,163In Stock	Cut Tape $4.51 $3.41 $3.13 $2.83 Reel $2.54 View $2.76 $2.70 $2.37 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	RX8901CE	SMD/SMT	Reel, Cut Tape, MouseReel