Real Time Clocks

Explore Real Time Clocks parts from multiple manufacturers, with model information, availability, datasheets and technical specifications for engineering and purchasing.

For parts that are not shown in the list, send the manufacturer part number, quantity or BOM to JIEXIN Electronics. Our team can assist with availability checks and quotation support.

Mfr. Part #	Availability	Price	Quantity	Datasheet	Series	Package/Case	Packaging	Product Status	Programmable	Type	Features	Memory Size	Time Format	Date Format	Interface	Voltage - Supply	Voltage - Supply, Battery	Current - Timekeeping (Max)	Operating Temperature	Mounting Type	Grade	Qualification	Supplier Device Package
RX-8025NB:AA IC RTC CLK/CALENDAR I2C 22SON EPSON	1,893	7.66	RFQ	Datasheet	RX-8025NB	22-SMD, 20 Leads, Flat Leads	Bulk	Active	Not Verified	Clock/Calendar	Alarm, Leap Year	-	HH:MM:SS (12/24 hr)	YY-MM-DD-dd	I2C, 2-Wire Serial	1.7V ~ 5.5V	-	1.2µA ~ 1.8µA @ 3V ~ 5V	-40°C ~ 85°C	Surface Mount	-	-	22-SON
RX-4045SAAAB PURE SN IC RTC CLK/CALENDAR SPI 14SOP EPSON	1,112	7.66	RFQ	Datasheet	RX-4045SA	14-SOIC (0.197", 5.00mm Width)	Strip	Active	Not Verified	Clock/Calendar	Alarm	-	HH:MM:SS (12/24 hr)	YY-MM-DD-dd	SPI	1.7V ~ 5.5V	-	1.2µA ~ 1.8µA @ 3V ~ 5V	-40°C ~ 85°C	Surface Mount	-	-	14-SOP
RX-8025NBAC PURE SN IC RTC CLK/CALENDAR I2C 22SON EPSON	2,880	0.00	RFQ	Datasheet	RX-8025NB	22-SMD, 20 Leads, Flat Leads	Bulk	Active	Not Verified	Clock/Calendar	Alarm	-	HH:MM:SS	YY-MM-DD	I2C	1.7V ~ 5.5V	1.15V ~ 5.5V	1.2µA ~ 1.8µA @ 3V ~ 5V	-40°C ~ 85°C	Surface Mount	-	-	22-SON (6.3x4.8)
RX-8035LC:AC3 PURE SN IC RTC EVENT REC I2C 12VSOJ EPSON	2,064	7.68	RFQ	Datasheet	RX-8035LC	12-TFSOJ (0.094", 2.40mm Width)	Tape & Reel (TR)	Active	Not Verified	Time Event Recorder	Alarm	-	HH:MM:SS (12/24 hr)	YY-MM-DD-dd	I2C, 2-Wire Serial	2.4V ~ 5.5V	1V ~ 5.5V	2.5µA @ 3V	-40°C ~ 85°C	Surface Mount	-	-	12-VSOJ
RX-4035LC:BB PURE SN IC RTC EVENT REC SPI 12VSOJ EPSON	4,683	7.74	RFQ	Datasheet	RX-4035LC	12-TFSOJ (0.094", 2.40mm Width)	Strip	Active	Not Verified	Time Event Recorder	Alarm	-	-	-	SPI	2.4V ~ 5.5V	1V ~ 5.5V	2.5µA @ 3V	-40°C ~ 85°C	Surface Mount	-	-	12-VSOJ
RX-8035LC:B PURE SN IC RTC EVENT REC I2C 12VSOJ EPSON	4,222	7.74	RFQ	Datasheet	RX-8035LC	12-TFSOJ (0.094", 2.40mm Width)	Strip	Active	Not Verified	Time Event Recorder	Alarm	-	HH:MM:SS (12/24 hr)	YY-MM-DD-dd	I2C, 2-Wire Serial	2.4V ~ 5.5V	1V ~ 5.5V	2.5µA @ 3V	-40°C ~ 85°C	Surface Mount	-	-	12-VSOJ
V3025SO28B+ IC RTC CLK/CALENDAR 28SOIC EM Microelectronic	2,060	8.24	RFQ	Datasheet	-	28-SOIC (0.295", 7.50mm Width)	Tape & Reel (TR)	Last Time Buy	Not Verified	Clock/Calendar	Alarm, Leap Year, RAM	8B	HH:MM:SS:hh (12/24 hr)	YY-MM-DD-dd	-	2V ~ 5.5V	2V ~ 4V	15µA @ 5.5V	-40°C ~ 85°C (TA)	Surface Mount	-	-	28-SOIC
DS12885SN+T&R IC RTC CLK/CALENDAR PAR 24SOIC Analog Devices Inc./Maxim Integrated	4,634	6.29	RFQ	Datasheet	-	24-SOIC (0.295", 7.50mm Width)	Tape & Reel (TR)	Active	Not Verified	Clock/Calendar	Alarm, Daylight Savings, Leap Year, NVSRAM, Square Wave Output	114B	HH:MM:SS (12/24 hr)	YY-MM-DD-dd	Parallel	4.5V ~ 5.5V	2.5V ~ 4V	15mA @ 4.5V ~ 5.5V	-40°C ~ 85°C	Surface Mount	-	-	24-SOIC
RX8900CE:UAB IC RTC CLK/CALENDAR I2C 10SMD EPSON	3,991	7.77	RFQ	Datasheet	RX8900CE	10-SMD, No Lead	Bulk	Active	Not Verified	Clock/Calendar	Alarm	-	HH:MM:SS (24 hr)	YY-MM-DD-dd	I2C	2.5V ~ 5.5V	1.6V ~ 5.5V	1.4µA ~ 1.5µA @ 3V ~ 5V	-40°C ~ 85°C	Surface Mount	-	-	10-SMD
RX-4045NB:AA3 PURE SN IC RTC CLK/CALENDAR SER 22SON EPSON	1,053	7.78	RFQ	Datasheet	RX-4045NB	22-LFDFN	Tape & Reel (TR)	Active	Not Verified	Clock/Calendar	Alarm	-	HH:MM:SS	YY-MM-DD-dd	4-Wire Serial	1.7V ~ 5.5V	-	1.2µA ~ 1.8µA @ 3V ~ 5V	-40°C ~ 85°C	Surface Mount	-	-	22-SON (6.3x4.8)
RX-4045NBAC3 IC RTC CLK/CALENDAR SER 22SON EPSON	4,295	0.00	RFQ	Datasheet	RX-4045NB	22-SMD, 20 Leads, Flat Leads	Tape & Reel (TR)	Active	Not Verified	Clock/Calendar	Alarm	-	HH:MM:SS	YY-MM-DD-dd	4-Wire Serial	1.7V ~ 5.5V	1.15V ~ 5.5V	1.2µA ~ 1.8µA @ 3V ~ 5V	-40°C ~ 85°C	Surface Mount	-	-	22-SON (6.3x4.8)
DS1685QN-5+ IC RTC CLK/CALENDAR PAR 28PLCC Analog Devices Inc./Maxim Integrated	1,313	8.24	RFQ	Datasheet	-	28-LCC (J-Lead)	Tube	Active	Not Verified	Clock/Calendar	Alarm, NVSRAM, Square Wave Output, Y2K	242B	HH:MM:SS (12/24 hr)	YY-MM-DD-dd	Parallel	4.5V ~ 5.5V	2.5V ~ 3.7V	3mA @ 5V	-40°C ~ 85°C	Surface Mount	-	-	28-PLCC (11.51x11.51)
DS32B35-33# IC RTC CLK/CALENDAR I2C 20SOIC Analog Devices Inc./Maxim Integrated	4,683	0.00	RFQ	Datasheet	-	20-SOIC (0.295", 7.50mm Width)	Tube	Obsolete	Not Verified	Clock/Calendar	Alarm, FRAM, Leap Year, Square Wave Output, TCXO/Crystal	2KB	HH:MM:SS (12/24 hr)	YY-MM-DD-dd	I2C, 2-Wire Serial	2.7V ~ 3.63V	2.3V ~ 3.6V	110µA @ 3.63V	0°C ~ 70°C	Surface Mount	-	-	20-SOIC
DS1500Y IC RTC CLK/CALENDAR PAR 32EDIP Analog Devices Inc./Maxim Integrated	2,476	0.00	RFQ	Datasheet	-	32-DIP Module (0.600", 15.24mm)	Tube	Obsolete	Not Verified	Clock/Calendar	Alarm, Leap Year, NVSRAM, Square Wave Output, Watchdog Timer, Y2K	256B	HH:MM:SS (24 hr)	YY-MM-DD-dd	Parallel	4.5V ~ 5.5V	2.5V ~ 3.7V	5mA @ 4.5V ~ 5.5V	0°C ~ 70°C	Through Hole	-	-	32-EDIP
DS1500W IC RTC CLK/CALENDAR PAR 32EDIP Analog Devices Inc./Maxim Integrated	1,333	0.00	RFQ	Datasheet	-	32-DIP Module (0.600", 15.24mm)	Tube	Obsolete	Not Verified	Clock/Calendar	Alarm, Leap Year, NVSRAM, Square Wave Output, Watchdog Timer, Y2K	256B	HH:MM:SS (24 hr)	YY-MM-DD-dd	Parallel	3V ~ 3.6V	2.5V ~ 3.7V	4mA @ 3V ~ 3.6V	0°C ~ 70°C	Through Hole	-	-	32-EDIP
RTC-8564JE:BB ROHS IC RTC CLK/CALENDAR I2C 20VSOJ EPSON	2,236	7.96	RFQ	Datasheet	RTC-8564JE	20-LSSOJ (0.213", 5.40mm Width)	Strip	Active	Not Verified	Clock/Calendar	Alarm	-	HH:MM:SS	YY-MM-DD-dd	I2C	1.8V ~ 5.5V	-	0.7µA ~ 0.8µA @ 3V ~ 5V	-40°C ~ 85°C	Surface Mount	-	-	20-VSOJ
RX8900SA:UAB PURE SN IC RTC CLK/CALENDAR I2C 14SOP EPSON	2,181	7.96	RFQ	Datasheet	RX8900SA	14-SOIC (0.197", 5.00mm Width)	Bulk	Active	Not Verified	Clock/Calendar	Alarm	-	HH:MM:SS (24 hr)	YY-MM-DD-dd	I2C	2.5V ~ 5.5V	1.6V ~ 5.5V	1.4µA ~ 1.5µA @ 3V ~ 5V	-40°C ~ 85°C	Surface Mount	-	-	14-SOP
RTC-8564JEBX ROHS IC RTC CLK/CALENDAR I2C 20VSOJ EPSON	3,196	0.00	RFQ	Datasheet	RTC-8564JE	20-LSSOJ (0.213", 5.40mm Width)	Tape & Reel (TR)	Active	Not Verified	Clock/Calendar	Alarm	-	HH:MM:SS	YY-MM-DD-dd	I2C	1.8V ~ 5.5V	-	0.7µA ~ 0.8µA @ 3V ~ 5V	-40°C ~ 85°C	Surface Mount	-	-	20-VSOJ
RX-8035LC:AC PURE SN IC RTC EVENT REC I2C 12VSOJ EPSON	4,440	8.04	RFQ	Datasheet	RX-8035LC	12-TFSOJ (0.094", 2.40mm Width)	Strip	Active	Not Verified	Time Event Recorder	Alarm	-	HH:MM:SS (12/24 hr)	YY-MM-DD-dd	I2C, 2-Wire Serial	2.4V ~ 5.5V	1V ~ 5.5V	2.5µA @ 3V	-40°C ~ 85°C	Surface Mount	-	-	12-VSOJ
DS32C35-33#T&R IC RTC CLK/CALENDAR I2C 20SOIC Analog Devices Inc./Maxim Integrated	3,613	0.00	RFQ	Datasheet	-	20-SOIC (0.295", 7.50mm Width)	Tape & Reel (TR)	Obsolete	Not Verified	Clock/Calendar	Alarm, FRAM, Leap Year, Square Wave Output, TCXO/Crystal	8KB	HH:MM:SS (12/24 hr)	YY-MM-DD-dd	I2C, 2-Wire Serial	2.7V ~ 3.63V	2.3V ~ 3.6V	110µA @ 3.63V	0°C ~ 70°C	Surface Mount	-	-	20-SOIC

FAQ

Frequently Asked Questions

What are Real Time Clocks components used for?

Real Time Clocks components are used in a wide range of electronic equipment and systems. Their exact function depends on the device, circuit design and technical requirements of the application.

How do I choose the right Real Time Clocks part?

Compare the manufacturer part number, key specifications, package type, operating conditions, availability and datasheet information. For replacement projects, always verify the critical electrical and mechanical parameters before selecting an alternative.

Can JIEXIN Electronics help source obsolete or hard-to-find Real Time Clocks parts?

Yes. Send us the required manufacturer part number, quantity or BOM. Our sourcing team can help check stock availability, lead time, alternative sourcing options and quotation details.

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