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
ISL12008IB8Z IC RTC CLK/CALENDAR I2C 8SOIC Renesas Electronics Corporation	3,483	-	RFQ	Datasheet	-	8-SOIC (0.154", 3.90mm Width)	Tube	Active	Not Verified	Clock/Calendar	Alarm, Leap Year	-	HH:MM:SS:hh (24 hr)	YY-MM-DD-dd	I2C, 2-Wire Serial	2.7V ~ 5.5V	1.8V ~ 5.5V	4µA ~ 6µA @ 3V ~ 5V	-40°C ~ 85°C	Surface Mount	-	-	8-SOIC
RX-8571LCB0 PURE SN IC RTC CLK/CALENDAR I2C 12VSOJ EPSON	355	-	RFQ	Datasheet	RX-8571LC	12-TFSOJ (0.094", 2.40mm Width)	Tape & Reel (TR)	Active	Not Verified	Clock/Calendar	Alarm, Leap Year, RAM	16B	HH:MM:SS (24 hr)	YY-MM-DD-dd	I2C, 2-Wire Serial	1.6V ~ 5.5V	-	0.55µA ~ 0.6µA @ 3V ~ 5V	-40°C ~ 85°C	Surface Mount	-	-	12-VSOJ
1338-31DCGI8 IC RTC CLK/CALENDAR I2C 8SOIC Renesas Electronics Corporation	1,817	-	RFQ	Datasheet	-	8-SOIC (0.154", 3.90mm Width)	Tape & Reel (TR)	Active	Not Verified	Clock/Calendar	Leap Year, NVSRAM, Square Wave Output	56B	HH:MM:SS (12/24 hr)	YY-MM-DD-dd	I2C, 2-Wire Serial	3.3V ~ 5.5V	1.3V ~ 3.7V	5µA @ 3.63V ~ 5.5V	-40°C ~ 85°C	Surface Mount	-	-	8-SOIC
M41T83ZQA6F IC RTC CLK/CALENDAR I2C 16QFN STMicroelectronics	1,000	-	RFQ	Datasheet	-	16-VQFN Exposed Pad	Tape & Reel (TR)	Active	Not Verified	Clock/Calendar	Alarm, Leap Year, Square Wave Output, SRAM, Watchdog Timer	7B	HH:MM:SS:hh (24 hr)	YY-MM-DD-dd	I2C, 2-Wire Serial	2.38V ~ 5.5V	2V ~ 5.5V	10µA @ 5.5V	-40°C ~ 85°C	Surface Mount	-	-	16-QFN (4x4)
RX8804CE XB0 IC RTC CLK/CALENDAR I2C 10SMD EPSON	1,916	-	RFQ	Datasheet	RX8804CE	10-SMD, No Lead	Tape & Reel (TR)	Active	Not Verified	Clock/Calendar	Alarm	-	HH:MM:SS	YY-MM-DD	I2C	1.6V ~ 5.5V	-	1.5µA ~ 1.6µA @ 3V ~ 5V	-40°C ~ 105°C	Surface Mount	-	-	10-SMD
1339-31DCGI IC RTC CLK/CALENDAR I2C 8SOIC Renesas Electronics Corporation	218	-	RFQ	Datasheet	-	8-SOIC (0.154", 3.90mm Width)	Tube	Active	Not Verified	Clock/Calendar	Alarm, Leap Year, Square Wave Output, Trickle-Charger	-	HH:MM:SS (12/24 hr)	YY-MM-DD-dd	I2C, 2-Wire Serial	3.3V ~ 5.5V	1.3V ~ 3.7V	200µA @ 3.63V ~ 5.5V	-40°C ~ 85°C	Surface Mount	-	-	8-SOIC
M41T93SQA6F IC RTC CLK/CALENDAR SPI 16QFN STMicroelectronics	618	-	RFQ	Datasheet	-	16-VQFN Exposed Pad	Tape & Reel (TR)	Active	Not Verified	Clock/Calendar	Alarm, Leap Year, Square Wave Output, SRAM, Watchdog Timer	7B	HH:MM:SS:hh (24 hr)	YY-MM-DD-dd	SPI	3V ~ 5.5V	1.8V ~ 5.5V	10µA @ 5.5V	-40°C ~ 85°C	Surface Mount	-	-	16-QFN (4x4)
M41T93ZQA6F IC RTC CLK/CALENDAR SPI 16QFN STMicroelectronics	7,717	-	RFQ	Datasheet	-	16-VQFN Exposed Pad	Tape & Reel (TR)	Active	Not Verified	Clock/Calendar	Alarm, Leap Year, Square Wave Output, SRAM, Watchdog Timer	7B	HH:MM:SS:hh (24 hr)	YY-MM-DD-dd	SPI	2.38V ~ 5.5V	1.8V ~ 5.5V	10µA @ 5.5V	-40°C ~ 85°C	Surface Mount	-	-	16-QFN (4x4)
R2045S-E2-FE IC RTC CLK/CALENDAR 4 WIRE 8HSOP Nisshinbo Micro Devices Inc.	8,866	-	RFQ	Datasheet	-	8-SOIC (0.173", 4.40mm Width) Exposed Pad	Tape & Reel (TR)	Active	Not Verified	Clock/Calendar	Alarm, Leap Year	-	HH:MM:SS (12/24 hr)	YY-MM-DD-dd	3-Wire Serial, 4-Wire Serial	1.7V ~ 5.5V	-	1.8µA ~ 2µA @ 3V ~ 5V	-40°C ~ 85°C	Surface Mount	-	-	8-HSOP-E
RX-8571SA:B0 PURE SN IC RTC CLK/CALENDAR I2C 14SOP EPSON	605	-	RFQ	Datasheet	RX-8571SA	14-SOIC (0.197", 5.00mm Width)	Tape & Reel (TR)	Active	Not Verified	Clock/Calendar	Alarm, Leap Year, RAM	16B	HH:MM:SS (24 hr)	YY-MM-DD-dd	I2C, 2-Wire Serial	1.6V ~ 5.5V	-	0.55µA ~ 0.6µA @ 3V ~ 5V	-40°C ~ 85°C	Surface Mount	-	-	14-SOP
RX-4571SA:B3 PURE SN IC RTC CLK/CALENDAR SER 14SOP EPSON	535	-	RFQ	Datasheet	RX-4571SA	14-SOIC (0.197", 5.00mm Width)	Tape & Reel (TR)	Active	Not Verified	Clock/Calendar	Alarm, Leap Year	-	HH:MM:SS (24 hr)	YY-MM-DD-dd	3-Wire Serial	1.6V ~ 5.5V	-	0.95µA ~ 1µA @ 3V ~ 5V	-40°C ~ 85°C	Surface Mount	-	-	14-SOP
M41T93ZMY6F IC RTC CLK/CALENDAR SPI 18SOX STMicroelectronics	5,468	-	RFQ	Datasheet	-	18-SOX, 18-SOIC with Crystal (7.5mm Width)	Tape & Reel (TR)	Active	Not Verified	Clock/Calendar	Alarm, Leap Year, Square Wave Output, SRAM, Watchdog Timer	7B	HH:MM:SS:hh (24 hr)	YY-MM-DD-dd	SPI	2.38V ~ 5.5V	1.8V ~ 5.5V	10µA @ 5.5V	-40°C ~ 85°C	Surface Mount	-	-	18-SOX
M41T93SMY6F IC RTC CLK/CALENDAR SPI 18SOX STMicroelectronics	3,776	-	RFQ	Datasheet	-	18-SOX, 18-SOIC with Crystal (7.5mm Width)	Tape & Reel (TR)	Active	Not Verified	Clock/Calendar	Alarm, Leap Year, Square Wave Output, SRAM, Watchdog Timer	7B	HH:MM:SS:hh (24 hr)	YY-MM-DD-dd	SPI	3V ~ 5.5V	1.8V ~ 5.5V	10µA @ 5.5V	-40°C ~ 85°C	Surface Mount	-	-	18-SOX
RX8900SA:UA0 PURE SN IC RTC CLK/CALENDAR I2C 14SOP EPSON	1,630	-	RFQ	Datasheet	RX8900SA	14-SOIC (0.197", 5.00mm Width)	Tape & Reel (TR)	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
ECS-RTC-3225-5609-TR IC RTC CLK/CALENDAR I2C 10SMD ECS Inc.	4,506	-	RFQ	Datasheet	-	10-SMD, No Lead	Tape & Reel (TR)	Active	Not Verified	Clock/Calendar	-	-	HH:MM:SS	YY-MM-DD	I2C	1.6V ~ 5V, 2.5V ~ 5V	1.6V ~ 5V	3µA @ 5V	-40°C ~ 85°C	Surface Mount	-	-	10-SMD
M41T81SMY6F IC RTC CLK/CALENDAR I2C 18SOX STMicroelectronics	3,896	-	RFQ	Datasheet	-	18-SOX, 18-SOIC with Crystal (7.5mm Width)	Tape & Reel (TR)	Active	Not Verified	Clock/Calendar	Alarm, Leap Year, Square Wave Output, Watchdog Timer	-	HH:MM:SS:hh (24 hr)	YY-MM-DD-dd	I2C, 2-Wire Serial	2.7V ~ 5.5V	2V ~ 3.5V	100µA @ 2.7V ~ 5.5V	-40°C ~ 85°C	Surface Mount	-	-	18-SOX
RX4901CE XB C06 IC RTC CLK/CALENDAR SPI 10SMD EPSON	6,400	-	RFQ	Datasheet	RX4901CE	10-SMD, No Lead	Tape & Reel (TR)	Active	Not Verified	Clock/Calendar	Alarm	-	HH:MM:SS	YY-MM-DD	SPI, 4-Wire Serial	1.6V ~ 5.5V	-	1.5µA @ 3V	-40°C ~ 105°C (TA)	Surface Mount	-	-	10-SMD
RX8901CE XB B06 IC RTC CLK/CALENDAR I2C 10SMD EPSON	665	-	RFQ	Datasheet	RX8901CE	10-SMD, No Lead	Tape & Reel (TR)	Active	Not Verified	Clock/Calendar	Alarm	-	HH:MM:SS	YY-MM-DD	I2C	1.6V ~ 5.5V	-	1.5µA @ 3V	-40°C ~ 105°C (TA)	Surface Mount	-	-	10-SMD
DS1341U+ IC RTC CLOCK/CALENDAR I2C 8UMAX Analog Devices Inc./Maxim Integrated	595	-	RFQ	Datasheet	-	8-TSSOP, 8-MSOP (0.118", 3.00mm Width)	Tube	Active	Not Verified	Clock/Calendar	Alarm, Leap Year, Square Wave Output	-	HH:MM:SS (12/24 hr)	YY-MM-DD-dd	I2C, 2-Wire Serial	1.8V ~ 5.5V	-	0.5µA ~ 0.6µA @ 3V ~ 5V	-40°C ~ 85°C	Surface Mount	-	-	8-uMAX/uSOP
RX-8803SA:UB3 PURE SN IC RTC CLK/CALENDAR I2C 14SOP EPSON	236	-	RFQ	Datasheet	RX-8803LC	14-SOIC (0.197", 5.00mm Width)	Tape & Reel (TR)	Active	Not Verified	Clock/Calendar	Alarm	-	-	YY-MM-DD	I2C, 2-Wire Serial	1.6V ~ 5.5V	-	2.1µA ~ 3.4µA @ 3V ~ 5V	-40°C ~ 85°C	Surface Mount	-	-	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?

Submit the manufacturer part number, required quantity and any package, date-code or delivery requirements through the RFQ form, and our team will review available sourcing options.