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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	Time Keeping Current	Packaging
Real Time Clock Extremely Accurate I C-Integrated RTC/TC DS3231SN#T&R Analog Devices / Maxim Integrated Restricted Availability	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 Mouser does not presently sell this product in your region.	Datasheet			Restricted Availability	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	1 uA	Reel, Cut Tape, MouseReel
Real Time Clock Micro Crystal RV-3129-C3-32.768k-OPTION-A-TB-QA RV-3129-C3-32.768k-OPTION-A-TB-QA Micro Crystal 1,000: $2.60 Non-Stocked	Mfr. Part # RV-3129-C3-32.768k-OPTION-A-TB-QA Mouser Part # 428-203618-MG1	Micro Crystal	Real Time Clock	Datasheet	Non-Stocked	$2.60	Min.: 1,000 Mult.: 1,000												800 nA
Real Time Clock Micro Crystal RV-3129-C3-32.768k-OPTION-B-TB-QA RV-3129-C3-32.768k-OPTION-B-TB-QA Micro Crystal 1,000: $2.17 Non-Stocked	Mfr. Part # RV-3129-C3-32.768k-OPTION-B-TB-QA Mouser Part # 428-203639-MG1	Micro Crystal	Real Time Clock	Datasheet	Non-Stocked	$2.17	Min.: 1,000 Mult.: 1,000												800 nA
Real Time Clock Micro Crystal RV-3149-C3-32.768k-OPTION-A-TB-QA RV-3149-C3-32.768k-OPTION-A-TB-QA Micro Crystal 1,000: $2.60 Non-Stocked	Mfr. Part # RV-3149-C3-32.768k-OPTION-A-TB-QA Mouser Part # 428-203641-MG1	Micro Crystal	Real Time Clock	Datasheet	Non-Stocked	$2.60	Min.: 1,000 Mult.: 1,000												800 nA
Real Time Clock Micro Crystal RV-3149-C3-32.768k-OPTION-B-TB-QA RV-3149-C3-32.768k-OPTION-B-TB-QA Micro Crystal 1,000: $2.17 Non-Stocked	Mfr. Part # RV-3149-C3-32.768k-OPTION-B-TB-QA Mouser Part # 428-203684-MG1	Micro Crystal	Real Time Clock	Datasheet	Non-Stocked	$2.17	Min.: 1,000 Mult.: 1,000												800 nA
Real Time Clock Real Time Clock SEAM3225 T&R 3K Diodes Incorporated RT313242N3 RT313242N3 Diodes Incorporated 3,000: $1.58 Non-Stocked Lead-Time 32 Weeks New Product	Mfr. Part # RT313242N3 Mouser Part # 621-RT313242N3 New Product	Diodes Incorporated	Real Time Clock Real Time Clock SEAM3225 T&R 3K	Datasheet	Non-Stocked Lead-Time 32 Weeks	Reel $1.58	Min.: 3,000 Mult.: 3,000 : 3,000	I2C	YYYY-MM-DD	HH:MM:SS (24 hr)	SMD-10		1.3 V	5.5 V	- 40 C	+ 85 C		SMD/SMT		Reel
Real Time Clock Real Time Clock SEAM3225 T&R 3K Diodes Incorporated RT313242Q3 RT313242Q3 Diodes Incorporated 3,000: $1.71 Non-Stocked Lead-Time 32 Weeks New Product	Mfr. Part # RT313242Q3 Mouser Part # 621-RT313242Q3 New Product	Diodes Incorporated	Real Time Clock Real Time Clock SEAM3225 T&R 3K	Datasheet	Non-Stocked Lead-Time 32 Weeks	Reel $1.71	Min.: 3,000 Mult.: 3,000 : 3,000	I2C	YYYY-MM-DD	HH:MM:SS (24 hr)	SMD-10		1.3 V	5.5 V	- 40 C	+ 85 C		SMD/SMT		Reel
Real Time Clock Real Time Clock SEAM3225 T&R 3K Diodes Incorporated RT313243N3 RT313243N3 Diodes Incorporated 3,000: $1.37 Non-Stocked Lead-Time 32 Weeks New Product	Mfr. Part # RT313243N3 Mouser Part # 621-RT313243N3 New Product	Diodes Incorporated	Real Time Clock Real Time Clock SEAM3225 T&R 3K	Datasheet	Non-Stocked Lead-Time 32 Weeks	Reel $1.37	Min.: 3,000 Mult.: 3,000 : 3,000	I2C	YYYY-MM-DD	HH:MM:SS (24 hr)	SMD-10		1.3 V	5.5 V	- 40 C	+ 85 C		SMD/SMT		Reel
Real Time Clock Real Time Clock SEAM3225 T&R 3K Diodes Incorporated RT313243Q1 RT313243Q1 Diodes Incorporated 3,000: $1.97 Non-Stocked Lead-Time 32 Weeks New Product	Mfr. Part # RT313243Q1 Mouser Part # 621-RT313243Q1 New Product	Diodes Incorporated	Real Time Clock Real Time Clock SEAM3225 T&R 3K	Datasheet	Non-Stocked Lead-Time 32 Weeks	Reel $1.97	Min.: 3,000 Mult.: 3,000 : 3,000	I2C	YYYY-MM-DD	HH:MM:SS (24 hr)	SMD-10		1.3 V	5.5 V	- 40 C	+ 125 C		SMD/SMT		Reel
Real Time Clock Real Time Clock SEAM3225 T&R 3K Diodes Incorporated RT313243Q2 RT313243Q2 Diodes Incorporated 3,000: $1.84 Non-Stocked Lead-Time 32 Weeks New Product	Mfr. Part # RT313243Q2 Mouser Part # 621-RT313243Q2 New Product	Diodes Incorporated	Real Time Clock Real Time Clock SEAM3225 T&R 3K	Datasheet	Non-Stocked Lead-Time 32 Weeks	Reel $1.84	Min.: 3,000 Mult.: 3,000 : 3,000	I2C	YYYY-MM-DD	HH:MM:SS (24 hr)	SMD-10		1.3 V	5.5 V	- 40 C	+ 105 C		SMD/SMT		Reel
Real Time Clock I2C Bus RTC w/56byte NVRAM RTC Diodes Incorporated PT7C4311ZEEX PT7C4311ZEEX Diodes Incorporated 3,000: $0.698 Non-Stocked Lead-Time 28 Weeks	Mfr. Part # PT7C4311ZEEX Mouser Part # 729-PT7C4311ZEEX	Diodes Incorporated	Real Time Clock I2C Bus RTC w/56byte NVRAM RTC Learn More about Diodes Incorporated diodes timing solutions	Datasheet	Non-Stocked Lead-Time 28 Weeks	Reel $0.698	Min.: 3,000 Mult.: 3,000 : 3,000	Serial 2-Wire, I2C	YY-MM-DD-dd	HH:MM:SS (24 hr)		Backup Switching	1.2 V	5.5 V	- 40 C	+ 85 C		SMD/SMT	70 uA	Reel
Real Time Clock 32.768k crystal RTC Module Integrated Diodes Incorporated PT7C4337ACSE PT7C4337ACSE Diodes Incorporated 1: $6.76 Non-Stocked Lead-Time 48 Weeks	Mfr. Part # PT7C4337ACSE Mouser Part # 729-PT7C4337ACSE	Diodes Incorporated	Real Time Clock 32.768k crystal RTC Module Integrated Learn More about Diodes Incorporated diodes timing solutions	Datasheet	Non-Stocked Lead-Time 48 Weeks	$6.76 $5.18 $4.60	Min.: 1 Mult.: 1	Serial 2-Wire, I2C	YY-MM-DD-dd	HH:MM:SS:hh (12 hr, 24 hr)		No Backup Switching	1.2 V	5.5 V	- 40 C	+ 85 C		SMD/SMT	450 nA	Tube
Real Time Clock Real Time Clock MSOP-8 T&R 2.5K Diodes Incorporated PT7C4337UEX-2017 PT7C4337UEX-2017 Diodes Incorporated 2,500: $0.555 Non-Stocked Lead-Time 48 Weeks	Mfr. Part # PT7C4337UEX-2017 Mouser Part # 729-PT7C4337UEX-2017	Diodes Incorporated	Real Time Clock Real Time Clock MSOP-8 T&R 2.5K	Datasheet	Non-Stocked Lead-Time 48 Weeks	Reel $0.555	Min.: 2,500 Mult.: 2,500 : 2,500	Serial 2-Wire, I2C	YY-MM-DD-dd	HH:MM:SS:hh (12 hr, 24 hr)		No Backup Switching	1.2 V	5.5 V	- 40 C	+ 85 C		SMD/SMT	450 nA	Reel
Real Time Clock 4 x 40 I C-bus LCD Segment Driver in TSSOP56 Package NXP Semiconductors PCF8553DTT/AY PCF8553DTT/AY NXP Semiconductors 2,000: $1.27 Non-Stocked Lead-Time 16 Weeks	Mfr. Part # PCF8553DTT/AY Mouser Part # 771-PCF8553DTT/AY	NXP Semiconductors	Real Time Clock 4 x 40 I C-bus LCD Segment Driver in TSSOP56 Package Learn More about NXP Semiconductors nxplogic	Datasheet	Non-Stocked Lead-Time 16 Weeks	Reel $1.27 $1.24	Min.: 2,000 Mult.: 2,000 : 2,000										PCF8553DTT			Reel
Real Time Clock 1338B-18 REAL TIME CLOCK Renesas Electronics 1338B-18DVGI8 1338B-18DVGI8 Renesas Electronics 2,500: $1.65 Non-Stocked Lead-Time 33 Weeks	Mfr. Part # 1338B-18DVGI8 Mouser Part # 972-1338B-18DVGI8	Renesas Electronics	Real Time Clock 1338B-18 REAL TIME CLOCK	Datasheet	Non-Stocked Lead-Time 33 Weeks	Reel $1.65	Min.: 2,500 Mult.: 2,500 : 2,500										1338		1 uA	Reel
Real Time Clock 1338D-31 REAL TIME CLOCK Renesas Electronics 1338D-31DVGI8 1338D-31DVGI8 Renesas Electronics 2,500: $1.56 Non-Stocked Lead-Time 33 Weeks	Mfr. Part # 1338D-31DVGI8 Mouser Part # 972-1338D-31DVGI8	Renesas Electronics	Real Time Clock 1338D-31 REAL TIME CLOCK	Datasheet	Non-Stocked Lead-Time 33 Weeks	Reel $1.56	Min.: 2,500 Mult.: 2,500 : 2,500										1338		2 uA	Reel
Real Time Clock 1339D-31 REAL TIME CLOCK Renesas Electronics 1339D-31DVGI8 1339D-31DVGI8 Renesas Electronics 2,500: $1.54 Non-Stocked Lead-Time 33 Weeks	Mfr. Part # 1339D-31DVGI8 Mouser Part # 972-1339D-31DVGI8	Renesas Electronics	Real Time Clock 1339D-31 REAL TIME CLOCK	Datasheet	Non-Stocked Lead-Time 33 Weeks	Reel $1.54	Min.: 2,500 Mult.: 2,500 : 2,500										1339		80 uA	Reel
Real Time Clock Real Time Clock RX-4571LC:B0 PURE SN Epson Timing 1,000: $1.78 Non-Stocked Lead-Time 17 Weeks	Mfr. Part # RX-4571LC:B0 PURE SN Mouser Part # 732-R4571LC:B0PURESN	Epson Timing	Real Time Clock Real Time Clock	Datasheet	Non-Stocked Lead-Time 17 Weeks	Reel $1.78 $1.76	Min.: 1,000 Mult.: 1,000 : 1,000	I2C				No Backup Switching	1.6 V	5.5 V	- 40 C	+ 85 C		SMD/SMT	8 uA	Reel
Real Time Clock Real Time Clock RX-4571SA:B0 PURE SN Epson Timing 1,000: $1.64 Non-Stocked Lead-Time 17 Weeks	Mfr. Part # RX-4571SA:B0 PURE SN Mouser Part # 732-R4571SA:B0PURESN	Epson Timing	Real Time Clock Real Time Clock	Datasheet	Non-Stocked Lead-Time 17 Weeks	Reel $1.64 $1.62	Min.: 1,000 Mult.: 1,000 : 1,000	Serial 3-Wire				No Backup Switching	1.6 V	5.5 V	- 40 C	+ 85 C		SMD/SMT	8 uA	Reel
Real Time Clock Real Time Clock RX-8803SA:UB0 PURE SN Epson Timing 1,000: $2.14 Non-Stocked	Mfr. Part # RX-8803SA:UB0 PURE SN Mouser Part # 732-R8803SAUB0PURESN	Epson Timing	Real Time Clock Real Time Clock	Datasheet	Non-Stocked	Reel $2.14 $2.10	Min.: 1,000 Mult.: 1,000 : 1,000	I2C				No Backup Switching	1.6 V	5.5 V	- 40 C	+ 85 C		SMD/SMT	750 nA	Reel
Real Time Clock RTC 4 WIRE SPI-BUS +/-5.0PPM -40-85C NO RST PIN 1K TR RA4000CE:YBD00 Epson Timing 1,000: $2.89 Non-Stocked Lead-Time 16 Weeks	Mfr. Part # RA4000CE:YBD00 Mouser Part # 732-RA4000CEYBD00	Epson Timing	Real Time Clock RTC 4 WIRE SPI-BUS +/-5.0PPM -40-85C NO RST PIN 1K TR	Datasheet	Non-Stocked Lead-Time 16 Weeks	Reel $2.89	Min.: 1,000 Mult.: 1,000 : 1,000	Serial 4-Wire, SPI	YY-MM-DD	HH:MM:SS (24 hr)	3.2 mm x 2.5 mm x 1 mm	No Backup Switching	1.6 V	5.5 V	- 40 C	+ 85 C		SMD/SMT	350 nA	Reel
Real Time Clock REAL TIME CLOCK +/-3.4PPM DTCXO 1K TR RA8804CE:XA0 Epson Timing 1,000: $3.19 Non-Stocked Lead-Time 20 Weeks	Mfr. Part # RA8804CE:XA0 Mouser Part # 732-RA8804CEXA0	Epson Timing	Real Time Clock REAL TIME CLOCK +/-3.4PPM DTCXO 1K TR	Datasheet	Non-Stocked Lead-Time 20 Weeks	Reel $3.19	Min.: 1,000 Mult.: 1,000 : 1,000	I2C	YY-MM-DD-dd	HH:MM:SS (24 hr)	3.2 mm x 2.5 mm x 1 mm	No Backup Switching	1.6 V	5.5 V	- 40 C	+ 85 C		SMD/SMT	400 nA	Reel
Real Time Clock I2C-BUS RTC +/-3.4PPM -40-85C 1K TR RA8900CE:UA0 Epson Timing 1,000: $3.23 Non-Stocked Lead-Time 30 Weeks	Mfr. Part # RA8900CE:UA0 Mouser Part # 732-RA8900CEUA0	Epson Timing	Real Time Clock I2C-BUS RTC +/-3.4PPM -40-85C 1K TR	Datasheet	Non-Stocked Lead-Time 30 Weeks	Reel $3.23	Min.: 1,000 Mult.: 1,000 : 1,000	I2C	YY-MM-DD-dd	HH:MM:SS (24 hr)	3.2 mm x 2.5 mm x 1 mm	Backup Switching	2.5 V	5.5 V	- 40 C	+ 85 C		SMD/SMT	720 nA	Reel
Real Time Clock RTC I2C-BUS 5+23PPM SON-22 PIN 250TR RTC-8564NB:B3 ROHS Epson Timing 250: $6.69 Non-Stocked Lead-Time 16 Weeks	Mfr. Part # RTC-8564NB:B3 ROHS Mouser Part # 732-RTC8564NBB3ROHS	Epson Timing	Real Time Clock RTC I2C-BUS 5+23PPM SON-22 PIN 250TR	Datasheet	Non-Stocked Lead-Time 16 Weeks	Reel $6.69 $6.46 $6.34 View Quote	Min.: 250 Mult.: 250 : 250										MG7050HAN		2.5 uA	Reel
Real Time Clock RX-4571SA:B0 PURE SN RTC SON 14PIN 5+/-23PPM 1K TR RX-4571SAB0 PURE SN Epson Timing 1,000: $1.83 Non-Stocked Lead-Time 16 Weeks	Mfr. Part # RX-4571SAB0 PURE SN Mouser Part # 732-RX-4571SABPURESN	Epson Timing	Real Time Clock RX-4571SA:B0 PURE SN RTC SON 14PIN 5+/-23PPM 1K TR	Datasheet	Non-Stocked Lead-Time 16 Weeks	Reel $1.83 $1.80 $1.78	Min.: 1,000 Mult.: 1,000 : 1,000	I2C	YY-MM-DD-dd	HH:MM:SS:hh (12 hr, 24 hr)	SOP-14	No Backup Switching	1.6 V	5.5 V	- 40 C	+ 85 C	RX-4571SA	SMD/SMT	8 uA	Reel