Real Time Clocks

Browse available Real Time Clocks components by manufacturer and part number. Review stock status, datasheets and key technical parameters to compare suitable options for design, maintenance, replacement or purchasing.

If you already have a target MPN or BOM, send it to EGOO with the required quantity. Our sourcing team can check availability, lead time and quotation options, including hard-to-find and obsolete parts.

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
RTC-4543SA:A:PURE SN IC RTC CLK/CALENDAR SER 14SOP EPSON	2,618	-	RFQ	Datasheet	RTC-4543SA	14-SOIC (0.197", 5.00mm Width)	Strip	Obsolete	Not Verified	Clock/Calendar	-	-	-	-	3-Wire Serial	2.5V ~ 5.5V	-	1µA ~ 3µA @ 2V ~ 5V	-40°C ~ 85°C	Surface Mount	-	-	14-SOP
RTC-4543SA:A3:PURE SN IC RTC CLK/CALENDAR SER 14SOP EPSON	1,021	-	RFQ	Datasheet	RTC-4543SA	14-SOIC (0.197", 5.00mm Width)	Tape & Reel (TR)	Obsolete	Not Verified	Clock/Calendar	-	-	-	-	3-Wire Serial	2.5V ~ 5.5V	-	1µA ~ 3µA @ 2V ~ 5V	-40°C ~ 85°C	Surface Mount	-	-	14-SOP
RTC-4543SA:B0:PURE SN IC RTC CLK/CALENDAR SER 14SOP EPSON	4,253	-	RFQ	Datasheet	RTC-4543SA	14-SOIC (0.197", 5.00mm Width)	Tape & Reel (TR)	Obsolete	Not Verified	Clock/Calendar	-	-	-	-	3-Wire Serial	2.5V ~ 5.5V	-	1µA ~ 3µA @ 2V ~ 5V	-40°C ~ 85°C	Surface Mount	-	-	14-SOP
RTC-4574SA:B0:PURE SN IC RTC CLK/CALENDAR SER 14SOP EPSON	1,202	-	RFQ	Datasheet	RTC-4574SA	14-SOIC (0.197", 5.00mm Width)	Tape & Reel (TR)	Obsolete	Not Verified	Clock/Calendar	Alarm	-	-	-	3-Wire Serial	1.6V ~ 5.5V	-	1µA ~ 2µA @ 3V ~ 5V	-40°C ~ 85°C	Surface Mount	-	-	14-SOP
RX-8581SA:B0:PURE SN IC RTC CLK/CALENDAR I2C 14SOP EPSON	4,252	-	RFQ	Datasheet	RX-8581SA	14-SOIC (0.197", 5.00mm Width)	Tape & Reel (TR)	Obsolete	Not Verified	Clock/Calendar	Alarm	-	-	-	I2C	1.8V ~ 5.5V	-	0.8µA ~ 1.2µA @ 3V ~ 5V	-40°C ~ 85°C	Surface Mount	-	-	14-SOP
RX-8581SA:B:PURE SN IC RTC CLK/CALENDAR I2C 14SOP EPSON	4,655	-	RFQ	Datasheet	RX-8581SA	14-SOIC (0.197", 5.00mm Width)	Tube	Obsolete	Not Verified	Clock/Calendar	Alarm	-	-	-	I2C	1.8V ~ 5.5V	-	0.8µA ~ 1.2µA @ 3V ~ 5V	-40°C ~ 85°C	Surface Mount	-	-	14-SOP
MAX31341BEWC+ IC RTC CLK/CALENDAR I2C 12WLP Analog Devices Inc./Maxim Integrated	1,517	-	RFQ	Datasheet	-	12-WFBGA, WLBGA	Strip	Active	Not Verified	Clock/Calendar	Alarm, Leap Year, Square Wave Output	64B	HH:MM:SS (24 hr)	YY-MM-DD-dd	I2C	1.6V ~ 3.6V	1.6V ~ 3.6V	0.33µA ~ 0.39µA @ 1.6V ~ 3.6V	-40°C ~ 85°C	Surface Mount	-	-	12-WLP (2.14x1.56)
DS1306EN+T&R/C04 IC INTEGRATED CIRCUIT Analog Devices Inc./Maxim Integrated	4,622	-	RFQ	Datasheet	*	-	Tape & Reel (TR)	Obsolete	Not Verified	-	-	-	-	-	-	-	-	-	-	-	-	-	-
1337ACSRI IC RTC CLK/CALENDAR I2C 16SOIC Renesas Electronics Corporation	1,560	-	RFQ	Datasheet	-	16-SOIC (0.295", 7.50mm Width)	Bulk	Obsolete	Not Verified	Clock/Calendar	Alarm, Leap Year, Square Wave Output	-	HH:MM:SS (12/24 hr)	YY-MM-DD-dd	I2C	1.8V ~ 5.5V	1.3V ~ 3.7V	0.6µA @ 1.3V ~ 1.8V	-40°C ~ 85°C	Surface Mount	-	-	16-SOIC
1337CSRI IC RTC CLK/CALENDAR I2C 16SOIC Renesas Electronics Corporation	4,934	-	RFQ	Datasheet	-	16-SOIC (0.295", 7.50mm Width)	Bulk	Obsolete	Not Verified	Clock/Calendar	Alarm, Leap Year, Square Wave Output	-	HH:MM:SS (12/24 hr)	YY-MM-DD-dd	I2C	1.8V ~ 5.5V	1.3V ~ 3.7V	0.6µA @ 1.3V ~ 1.8V	-40°C ~ 85°C	Surface Mount	-	-	16-SOIC
1337CSRI8 IC RTC CLK/CALENDAR I2C 16SOIC Renesas Electronics Corporation	2,992	-	RFQ	Datasheet	-	16-SOIC (0.295", 7.50mm Width)	Tape & Reel (TR)	Obsolete	Not Verified	Clock/Calendar	Alarm, Leap Year, Square Wave Output	-	HH:MM:SS (12/24 hr)	YY-MM-DD-dd	I2C	1.8V ~ 5.5V	1.3V ~ 3.7V	0.6µA @ 1.3V ~ 1.8V	-40°C ~ 85°C	Surface Mount	-	-	16-SOIC
1338A-31DVGI IC RTC CLK/CALENDAR I2C 8TSSOP Renesas Electronics Corporation	3,156	-	RFQ	Datasheet	-	8-TSSOP, 8-MSOP (0.118", 3.00mm Width)	Bulk	Obsolete	Not Verified	Clock/Calendar	Leap Year, NVSRAM, Square Wave Output	56b	HH:MM:SS (12/24 hr)	YY-MM-DD-dd	I2C	2.7V ~ 5.5V	1.3V ~ 3.7V	5µA @ 3.63V ~ 5.5V	-40°C ~ 85°C	Surface Mount	-	-	8-TSSOP
1338A-31DVGI8 IC RTC CLK/CALENDAR I2C 8TSSOP Renesas Electronics Corporation	1,807	-	RFQ	Datasheet	-	8-TSSOP, 8-MSOP (0.118", 3.00mm Width)	Tape & Reel (TR)	Obsolete	Not Verified	Clock/Calendar	Leap Year, NVSRAM, Square Wave Output	56b	HH:MM:SS (12/24 hr)	YY-MM-DD-dd	I2C	2.7V ~ 5.5V	1.3V ~ 3.7V	5µA @ 3.63V ~ 5.5V	-40°C ~ 85°C	Surface Mount	-	-	8-TSSOP
1339A-31DVGI IC RTC CLK/CALENDAR I2C 8TSSOP Renesas Electronics Corporation	2,568	-	RFQ	Datasheet	-	8-TSSOP, 8-MSOP (0.118", 3.00mm Width)	Bulk	Obsolete	Not Verified	Clock/Calendar	Alarm, Leap Year, Square Wave Output, Trickle-Charger	-	HH:MM:SS (12/24 hr)	YY-MM-DD-dd	I2C	2.7V ~ 5.5V	1.3V ~ 3.7V	200µA @ 3.63V ~ 5.5V	-40°C ~ 85°C	Surface Mount	-	-	8-TSSOP
1339A-31DVGI8 IC RTC CLK/CALENDAR I2C 8TSSOP Renesas Electronics Corporation	2,417	-	RFQ	Datasheet	-	8-TSSOP, 8-MSOP (0.118", 3.00mm Width)	Tape & Reel (TR)	Obsolete	Not Verified	Clock/Calendar	Alarm, Leap Year, Square Wave Output, Trickle-Charger	-	HH:MM:SS (12/24 hr)	YY-MM-DD-dd	I2C	2.7V ~ 5.5V	1.3V ~ 3.7V	200µA @ 3.63V ~ 5.5V	-40°C ~ 85°C	Surface Mount	-	-	8-TSSOP
1339B-31DVGI IC RTC CLK/CALENDAR I2C 8TSSOP Renesas Electronics Corporation	3,383	-	RFQ	Datasheet	-	8-TSSOP, 8-MSOP (0.118", 3.00mm Width)	Bulk	Obsolete	Not Verified	Clock/Calendar	Alarm, Leap Year, Square Wave Output, Trickle-Charger	-	HH:MM:SS (12/24 hr)	YY-MM-DD-dd	I2C	2.7V ~ 5.5V	1.3V ~ 3.7V	200µA @ 3.63V ~ 5.5V	-40°C ~ 85°C	Surface Mount	-	-	8-TSSOP
1339B-31DVGI8 IC RTC CLK/CALENDAR I2C 8TSSOP Renesas Electronics Corporation	4,662	-	RFQ	Datasheet	-	8-TSSOP, 8-MSOP (0.118", 3.00mm Width)	Tape & Reel (TR)	Obsolete	Not Verified	Clock/Calendar	Alarm, Leap Year, Square Wave Output, Trickle-Charger	-	HH:MM:SS (12/24 hr)	YY-MM-DD-dd	I2C	2.7V ~ 5.5V	1.3V ~ 3.7V	200µA @ 3.63V ~ 5.5V	-40°C ~ 85°C	Surface Mount	-	-	8-TSSOP
ISL12028IBZ-T IC RTC CLK/CALENDAR I2C 14SOIC Intersil	4,163	-	RFQ	Datasheet	-	14-SOIC (0.154", 3.90mm Width)	Bulk	Obsolete	Not Verified	Clock/Calendar	Alarm, Leap Year, Supervisor, Watchdog Timer	-	HH:MM:SS (12/24 hr)	YY-MM-DD-dd	I2C, 2-Wire Serial	2.7V ~ 5.5V	1.8V ~ 5.5V	10µA ~ 20µA @ 2.7V ~ 5.5V	-40°C ~ 85°C	Surface Mount	-	-	14-SOIC
V3023SO28A+ IC RTC CLOCK/CALENDAR 28SOIC EM Microelectronic	1,830	-	RFQ	Datasheet	-	28-SOIC (0.295", 7.50mm Width)	Tube	Obsolete	Not Verified	Clock/Calendar	Alarm, Leap Year, RAM	8B	HH:MM:SS:hh (12/24 hr)	YY-MM-DD-dd	-	2V ~ 5.5V	-	15µA @ 5V	-40°C ~ 85°C (TA)	Surface Mount	-	-	28-SOIC
RA-4565SA B3 PURE SN IC RTC CLK/CALENDAR SPI 14SOP EPSON	3,663	-	RFQ	Datasheet	-	14-SOIC (0.197", 5.00mm Width)	Tape & Reel (TR)	Obsolete	Not Verified	Clock/Calendar	Alarm, Leap Year	-	HH:MM:SS	YY-MM-DD-dd	SPI, 4-Wire Serial	1.6V ~ 5.5V	-	1.6µA ~ 2µA @ 3V ~ 5V	-40°C ~ 125°C	Surface Mount	Automotive	AEC-Q200	14-SOP

Real Time Clocks FAQ

What Real Time Clocks components can I source from EGOO?

You can browse available Real Time Clocks product families, manufacturers and part numbers on this page, then review stock, datasheets and technical information for suitable options.

Can EGOO help with hard-to-source or obsolete Real Time Clocks parts?

Yes. EGOO provides sourcing support for shortage, obsolete and hard-to-find electronic components. Send us the target manufacturer part number and quantity for checking.

Does EGOO support BOM and small-batch sourcing?

Yes. We support BOM sourcing, prototype requirements and small-batch supply, together with stock, lead-time and quotation assistance.

How do I request pricing and availability?

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