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
DS1394U-33+ IC RTC CLK/CALENDAR SPI 10UMAX Analog Devices Inc./Maxim Integrated	2,613	-	RFQ	Datasheet	-	10-TFSOP, 10-MSOP (0.118", 3.00mm Width)	Tube	Active	Not Verified	Clock/Calendar	Alarm, Leap Year, Square Wave Output, Trickle-Charger	-	HH:MM:SS:hh (12/24 hr)	YY-MM-DD-dd	SPI	2.97V ~ 5.5V	1.3V ~ 5.5V	175µA @ 2.97V ~ 5.5V	-40°C ~ 85°C	Surface Mount	-	-	10-uMAX/uSOP
RX8900SA:UC3 PURE SN IC RTC CLK/CALENDAR I2C 14SOP EPSON	2,680	-	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
M41ST87WSS6F IC RTC CLK/CALENDAR I2C 20SSOP STMicroelectronics	1,182	-	RFQ	Datasheet	-	20-SSOP (0.209", 5.30mm Width)	Tape & Reel (TR)	Active	Not Verified	Clock/Calendar	Alarm, Leap Year, NVSRAM, Square Wave Output, Supervisor, Watchdog Timer	128B	HH:MM:SS:hh (24 hr)	YY-MM-DD-dd	I2C, 2-Wire Serial	2.7V ~ 3.6V	2.5V ~ 3.6V	0.5mA @ 2.7V ~ 3.6V	-40°C ~ 85°C	Surface Mount	-	-	20-SSOP
DS1340U-33+ IC RTC CLOCK/CALENDAR I2C 8UMAX Analog Devices Inc./Maxim Integrated	1,079	-	RFQ	Datasheet	-	8-TSSOP, 8-MSOP (0.118", 3.00mm Width)	Tube	Active	Not Verified	Clock/Calendar	Leap Year, Trickle-Charger	-	HH:MM:SS (24 hr)	YY-MM-DD-dd	I2C, 2-Wire Serial	2.97V ~ 5.5V	1.3V ~ 5.5V	150µA @ 5.5V	-40°C ~ 85°C	Surface Mount	-	-	8-uMAX/uSOP
DS1343D-33+T&R IC RTC CLK/CALENDAR SPI 14TDFN Analog Devices Inc./Maxim Integrated	261	-	RFQ	Datasheet	-	14-WFDFN Exposed Pad	Tape & Reel (TR)	Active	Not Verified	Clock/Calendar	Alarm, Leap Year, NVRAM, Square Wave Output, Trickle Charger	96B	HH:MM:SS (12/24 hr)	YY-MM-DD-dd	SPI	3V ~ 5.5V	1.3V ~ 5.5V	120µA ~ 160µA @ 3.63V ~ 5.5V	-40°C ~ 85°C	Surface Mount	-	-	14-TDFN (3x3)
M41ST85WMX6TR IC RTC CLOCK/CALENDAR I2C 28SO STMicroelectronics	4,270	-	RFQ	Datasheet	-	28-SOIC (0.295", 7.50mm Width)	Tape & Reel (TR)	Active	Not Verified	Clock/Calendar	Alarm, Leap Year, NVSRAM, Square Wave Output, Supervisor, Watchdog Timer	44B	HH:MM:SS:hh (24 hr)	YY-MM-DD-dd	I2C, 2-Wire Serial	2.7V ~ 3.6V	2.5V ~ 3.5V	0.5mA @ 2.7V ~ 3.6V	-40°C ~ 85°C	Surface Mount	-	-	28-SO
AB-RTCMC-32.768KHZ-ZIZE-S2-T IC RTC CLK/CALENDAR SPI MODULE Abracon LLC	848	-	RFQ	Datasheet	-	10-SMD Module	Tape & Reel (TR)	Active	Not Verified	Clock/Calendar	Alarm, Leap Year, Square Wave Output, Watchdog Timer	-	HH:MM:SS (12/24 hr)	YY-MM-DD-dd	SPI	1.1V ~ 5.5V	-	0.35µA ~ 0.4µA @ 2V ~ 5V	-40°C ~ 85°C	Surface Mount	-	-	Module
DS12R885S-33+ IC RTC CLK/CALENDAR PAR 24SOIC Analog Devices Inc./Maxim Integrated	664	-	RFQ	Datasheet	-	24-SOIC (0.295", 7.50mm Width)	Tube	Active	Not Verified	Clock/Calendar	Alarm, Leap Year, NVSRAM, Square Wave Output, Trickle-Charger	114B	HH:MM:SS (12/24 hr)	YY-MM-DD-dd	Parallel	2.97V ~ 3.63V	2V ~ 3.05V	2mA @ 2.97V ~ 3.63V	-40°C ~ 85°C	Surface Mount	-	-	24-SOIC
DS1344D-33+T&R IC RTC CLK/CALENDAR SPI 14TDFN Analog Devices Inc./Maxim Integrated	7,053	-	RFQ	Datasheet	-	14-WFDFN Exposed Pad	Tape & Reel (TR)	Active	Not Verified	Clock/Calendar	Alarm, Leap Year, NVRAM, Square Wave Output, Trickle Charger	96B	HH:MM:SS (12/24 hr)	YY-MM-DD-dd	SPI	3V ~ 5.5V	1.3V ~ 5.5V	120µA ~ 160µA @ 3.63V ~ 5.5V	-40°C ~ 85°C	Surface Mount	-	-	14-TDFN (3x3)
RX-8571SA:B3 PURE SN IC RTC CLK/CALENDAR I2C 14SOP EPSON	183	-	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
DS1340C-18# IC RTC CLK/CALENDAR I2C 16SOIC Analog Devices Inc./Maxim Integrated	829	-	RFQ	Datasheet	-	16-SOIC (0.295", 7.50mm Width)	Tube	Active	Not Verified	Clock/Calendar	Leap Year, Trickle-Charger	-	HH:MM:SS (24 hr)	YY-MM-DD-dd	I2C, 2-Wire Serial	1.71V ~ 5.5V	1.3V ~ 3.7V	100µA @ 1.89V	-40°C ~ 85°C	Surface Mount	-	-	16-SOIC
RX-4571LC:B3 PURE SN IC RTC CLK/CALENDAR SER 12VSOJ EPSON	1,849	-	RFQ	Datasheet	RX-4571LC	12-TFSOJ (0.094", 2.40mm 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	-	-	12-VSOJ
DS1388Z-3+ IC RTC CLK/CALENDAR I2C 8SOIC Analog Devices Inc./Maxim Integrated	117	-	RFQ	Datasheet	-	8-SOIC (0.154", 3.90mm Width)	Tube	Active	Not Verified	Clock/Calendar	EEPROM, Leap Year, Supervisor, Trickle-Charger, Watchdog Timer	512B	HH:MM:SS:hh (12/24 hr)	YY-MM-DD-dd	I2C, 2-Wire Serial	2.7V ~ 3.3V	1.3V ~ 5.5V	140µA @ 2.7V ~ 3.3V	-40°C ~ 85°C	Surface Mount	-	-	8-SOIC
ISL12022MIBZ-T IC RTC CLK/CALENDAR I2C 20SOIC Renesas Electronics Corporation	9,560	-	RFQ	Datasheet	-	20-SOIC (0.295", 7.50mm Width)	Tape & Reel (TR)	Active	Not Verified	Clock/Calendar	Alarm, Daylight Savings, Leap Year, SRAM	128B	HH:MM:SS (12/24 hr)	YY-MM-DD-dd	I2C, 2-Wire Serial	2.7V ~ 5.5V	1.8V ~ 5.5V	14µA ~ 15µA @ 3V ~ 5V	-40°C ~ 85°C	Surface Mount	-	-	20-SOIC
DS1306+ IC RTC CLK/CALENDAR SPI 16DIP Analog Devices Inc./Maxim Integrated	2,576	-	RFQ	Datasheet	-	16-DIP (0.300", 7.62mm)	Tube	Active	Not Verified	Clock/Calendar	Alarm, Leap Year, NVSRAM, Square Wave Output, Trickle-Charger	96B	HH:MM:SS (12/24 hr)	YY-MM-DD-dd	SPI	2V ~ 5.5V	2V ~ 5.5V	25.3µA ~ 81µA @ 2V ~ 5V	0°C ~ 70°C	Through Hole	-	-	16-PDIP
RX-8803LC:UB3 PURE SN IC RTC CLK/CALENDAR I2C 12VSOJ EPSON	2,487	-	RFQ	Datasheet	RX-8803LC	12-TFSOJ (0.094", 2.40mm 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	-	-	12-VSOJ
RTC-8564NB:B3 ROHS IC RTC CLK/CALENDAR I2C 22SON EPSON	909	-	RFQ	Datasheet	RTC-8564NB	22-SMD, 20 Leads, Flat Leads	Tape & Reel (TR)	Active	Not Verified	Clock/Calendar	Alarm, Y2K	-	HH:MM:SS	YY-MM-DD-dd	I2C, 2-Wire Serial	1.8V ~ 5.5V	-	0.7µA ~ 0.8µA @ 3V ~ 5V	-40°C ~ 85°C	Surface Mount	-	-	22-SON
DS1338C-3# IC RTC CLK/CALENDAR I2C 16SOIC Analog Devices Inc./Maxim Integrated	171	-	RFQ	Datasheet	-	16-SOIC (0.295", 7.50mm Width)	Tube	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	2.7V ~ 5.5V	1.3V ~ 3.7V	200µA @ 3.3V	-40°C ~ 85°C	Surface Mount	-	-	16-SOIC
RX-4045NB:AA3 IC RTC CLK/CALENDAR SPI 22SON EPSON	500	-	RFQ	Datasheet	RX-4045NB	22-LFDFN	Tape & Reel (TR)	Active	Not Verified	Clock/Calendar	Alarm, Leap Year	-	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	-	-	22-SON (6.3x4.8)
RX8804CE XA3 IC RTC CLK/CALENDAR I2C 10SMD EPSON	2,449	-	RFQ	Datasheet	RX8804CE	10-SMD, No Lead	Tape & Reel (TR)	Active	Not Verified	Clock/Calendar	Alarm	-	-	-	I2C	1.6V ~ 5.5V	-	1.5µA ~ 1.6µA @ 3V ~ 5V	-40°C ~ 105°C	Surface Mount	-	-	10-SMD

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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