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
R2051S02-E2-F HIGH PRECISION I2C-BUS REAL-TIME Nisshinbo Micro Devices Inc.	4,829	-	RFQ	Datasheet	*	-	Tape & Reel (TR)	Active	Not Verified	-	-	-	-	-	-	-	-	-	-	-	-	-	-
R2051S03-E2-F HIGH PRECISION I2C-BUS REAL-TIME Nisshinbo Micro Devices Inc.	2,799	-	RFQ	Datasheet	*	-	Tape & Reel (TR)	Active	Not Verified	-	-	-	-	-	-	-	-	-	-	-	-	-	-
S-35390AH-J8T2U LINEAR IC ABLIC Inc.	2,510	-	RFQ	Datasheet	S-35390A H	8-SOIC (0.154", 3.90mm Width)	Tape & Reel (TR)	Active	-	Clock/Calendar	Alarm, Leap Year	-	HH:MM:SS (12/24 hr)	YY-MM-DD-dd	2-Wire Serial	1.3V ~ 5.5V	1.3V ~ 5.5V	1.2µA ~ 1.4µA @ 3V ~ 5V	-40°C ~ 105°C (TA)	Surface Mount	-	-	8-SOP-J
S-35390AH-T8T2U LINEAR IC ABLIC Inc.	3,153	-	RFQ	Datasheet	S-35390A H	8-TSSOP (0.173", 4.40mm Width)	Tape & Reel (TR)	Active	-	Clock/Calendar	Alarm, Leap Year	-	HH:MM:SS (12/24 hr)	YY-MM-DD-dd	2-Wire Serial	1.3V ~ 5.5V	1.3V ~ 5.5V	1.2µA ~ 1.4µA @ 3V ~ 5V	-40°C ~ 105°C (TA)	Surface Mount	-	-	8-TSSOP
S-35190AH-J8T2U LINEAR IC ABLIC Inc.	3,236	-	RFQ	Datasheet	S-35190A H	8-SOIC (0.154", 3.90mm Width)	Tape & Reel (TR)	Active	-	Clock/Calendar	Alarm, Leap Year	-	HH:MM:SS (12/24 hr)	YY-MM-DD-dd	3-Wire Serial	1.3V ~ 5.5V	1.3V ~ 5.5V	1.2µA ~ 1.4µA @ 3V ~ 5V	-40°C ~ 105°C (TA)	Surface Mount	-	-	8-SOP-J
S-35190AH-T8T2U LINEAR IC ABLIC Inc.	1,720	-	RFQ	Datasheet	S-35190A H	8-TSSOP (0.173", 4.40mm Width)	Tape & Reel (TR)	Active	-	Clock/Calendar	Alarm, Leap Year	-	HH:MM:SS (12/24 hr)	YY-MM-DD-dd	3-Wire Serial	1.3V ~ 5.5V	1.3V ~ 5.5V	1.2µA ~ 1.4µA @ 3V ~ 5V	-40°C ~ 105°C (TA)	Surface Mount	-	-	8-TSSOP
MCP79400T-I/ST IC RTC CLK/CALENDAR I2C 8TSSOP Microchip Technology	1,893	-	RFQ	Datasheet	-	8-TSSOP (0.173", 4.40mm Width)	Tape & Reel (TR)	Active	Not Verified	Clock/Calendar	Alarm, Leap Year, Square Wave Output, SRAM, Unique ID	64B	HH:MM:SS (12/24 hr)	YY-MM-DD-dd	I2C, 2-Wire Serial	1.8V ~ 5.5V	1.3V ~ 5.5V	1.2µA (Typ) @ 3.3V	-40°C ~ 85°C	Surface Mount	-	-	8-TSSOP
S-35199A01-HRT1 IC RTC CLK/CALENDAR SER 12UFBGA ABLIC Inc.	3,306	-	RFQ	Datasheet	-	12-UFBGA, WLBGA	Tape & Reel (TR)	Not For New Designs	Not Verified	Clock/Calendar	Alarm, Leap Year	-	HH:MM:SS (12/24 hr)	YY-MM-DD-dd	3-Wire Serial	1.3V ~ 5.5V	-	8µA ~ 14µA @ 3V ~ 5V	-40°C ~ 85°C	Surface Mount	-	-	12-UFBGA, WLBGA
S-35399A02-HRT1 IC RTC CLK/CALENDAR I2C 12UFBGA ABLIC Inc.	1,849	-	RFQ	Datasheet	-	12-UFBGA, WLBGA	Tape & Reel (TR)	Not For New Designs	Not Verified	Clock/Calendar	Alarm, Leap Year	-	HH:MM:SS (12/24 hr)	YY-MM-DD-dd	I2C, 2-Wire Serial	1.3V ~ 5.5V	-	14µA ~ 30µA @ 3V ~ 5V	-40°C ~ 85°C	Surface Mount	-	-	12-UFBGA, WLBGA
MCP79401T-I/SN IC RTC CLK/CALENDAR I2C 8SOIC Microchip Technology	2,331	-	RFQ	Datasheet	-	8-SOIC (0.154", 3.90mm Width)	Tape & Reel (TR)	Active	Not Verified	Clock/Calendar	Alarm, Leap Year, Square Wave Output, SRAM, Unique ID	64B	HH:MM:SS (12/24 hr)	YY-MM-DD-dd	I2C, 2-Wire Serial	1.8V ~ 5.5V	1.3V ~ 5.5V	1.2µA (Typ) @ 3.3V	-40°C ~ 85°C	Surface Mount	-	-	8-SOIC
MCP79402T-I/SN IC RTC CLK/CALENDAR I2C 8SOIC Microchip Technology	1,106	-	RFQ	Datasheet	-	8-SOIC (0.154", 3.90mm Width)	Tape & Reel (TR)	Active	Not Verified	Clock/Calendar	Alarm, Leap Year, Square Wave Output, SRAM, Unique ID	64B	HH:MM:SS (12/24 hr)	YY-MM-DD-dd	I2C, 2-Wire Serial	1.8V ~ 5.5V	1.3V ~ 5.5V	1.2µA (Typ) @ 3.3V	-40°C ~ 85°C	Surface Mount	-	-	8-SOIC
PT7C4563WEX IC RTC CLK/CALENDAR I2C 8SOIC Diodes Incorporated	17,500	-	RFQ	Datasheet	-	8-SOIC (0.154", 3.90mm Width)	Tape & Reel (TR)	Obsolete	Not Verified	Clock/Calendar	Alarm, Leap Year, Square Wave Output	-	HH:MM:SS (24 hr)	YY-MM-DD-dd	I2C, 2-Wire Serial	1.3V ~ 5.5V	-	0.65µA ~ 0.85µA @ 3V ~ 5V	-40°C ~ 85°C (TA)	Surface Mount	-	-	8-SOIC
PT7C4311ZEE+DMX IC RTC CLK/CALENDAR I2C 8TDFN Diodes Incorporated	3,370	-	RFQ	Datasheet	-	8-WFDFN Exposed Pad	Tape & Reel (TR)	Obsolete	Not Verified	Clock/Calendar	Leap Year, Square Wave Output, Y2K	56B	HH:MM:SS (24 hr)	YY-MM-DD	I2C, 2-Wire Serial	1.2V ~ 5.5V	2V ~ 3.5V	150µA @ 1.5V ~ 5.5V	-40°C ~ 85°C (TA)	Surface Mount	-	-	8-TDFN (2x3)
S-35399A03-J8T2G IC RTC CLOCK/CALENDAR I2C 8SOP ABLIC Inc.	3,237	-	RFQ	Datasheet	-	8-SOIC (0.154", 3.90mm Width)	Tape & Reel (TR)	Not For New Designs	Not Verified	Clock/Calendar	Alarm, Leap Year	-	HH:MM:SS (12/24 hr)	YY-MM-DD-dd	I2C, 2-Wire Serial	1.3V ~ 5.5V	-	14µA ~ 30µA @ 3V ~ 5V	-40°C ~ 85°C	Surface Mount	-	-	8-SOP-J
RX8111CE A6 IC RTC CLK/CALENDAR I2C 10SMD EPSON	1,075	-	RFQ	Datasheet	RX8111CE	10-SMD, No Lead	Tape & Reel (TR)	Active	Not Verified	Clock/Calendar	Alarm	-	HH:MM:SS	YY-MM-DD	I2C	1.6V ~ 5.5V	1.1V ~ 5.5V	3µA @ 3V	-40°C ~ 85°C (TA)	Surface Mount	-	-	10-SMD
MCP79401T-I/ST IC RTC CLK/CALENDAR I2C 8TSSOP Microchip Technology	2,666	-	RFQ	Datasheet	-	8-TSSOP (0.173", 4.40mm Width)	Tape & Reel (TR)	Active	Not Verified	Clock/Calendar	Alarm, Leap Year, Square Wave Output, SRAM, Unique ID	64B	HH:MM:SS (12/24 hr)	YY-MM-DD-dd	I2C, 2-Wire Serial	1.8V ~ 5.5V	1.3V ~ 5.5V	1.2µA (Typ) @ 3.3V	-40°C ~ 85°C	Surface Mount	-	-	8-TSSOP
MCP79401T-I/MS IC RTC CLK/CALENDAR I2C 8MSOP Microchip Technology	1,107	-	RFQ	Datasheet	-	8-TSSOP, 8-MSOP (0.118", 3.00mm Width)	Tape & Reel (TR)	Active	Not Verified	Clock/Calendar	Alarm, Leap Year, Square Wave Output, SRAM, Unique ID	64B	HH:MM:SS (12/24 hr)	YY-MM-DD-dd	I2C, 2-Wire Serial	1.8V ~ 5.5V	1.3V ~ 5.5V	1.2µA (Typ) @ 3.3V	-40°C ~ 85°C	Surface Mount	-	-	8-MSOP
MCP79402T-I/ST IC RTC CLK/CALENDAR I2C 8TSSOP Microchip Technology	4,536	-	RFQ	Datasheet	-	8-TSSOP (0.173", 4.40mm Width)	Tape & Reel (TR)	Active	Not Verified	Clock/Calendar	Alarm, Leap Year, Square Wave Output, SRAM, Unique ID	64B	HH:MM:SS (12/24 hr)	YY-MM-DD-dd	I2C, 2-Wire Serial	1.8V ~ 5.5V	1.3V ~ 5.5V	1.2µA (Typ) @ 3.3V	-40°C ~ 85°C	Surface Mount	-	-	8-TSSOP
MCP79402T-I/MS IC RTC CLK/CALENDAR I2C 8MSOP Microchip Technology	2,361	-	RFQ	Datasheet	-	8-TSSOP, 8-MSOP (0.118", 3.00mm Width)	Tape & Reel (TR)	Active	Not Verified	Clock/Calendar	Alarm, Leap Year, Square Wave Output, SRAM, Unique ID	64B	HH:MM:SS (12/24 hr)	YY-MM-DD-dd	I2C, 2-Wire Serial	1.8V ~ 5.5V	1.3V ~ 5.5V	1.2µA (Typ) @ 3.3V	-40°C ~ 85°C	Surface Mount	-	-	8-MSOP
PT7C4563UEX IC RTC CLK/CALENDAR I2C 8MSOP Diodes Incorporated	1,199	-	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	-	HH:MM:SS (24 hr)	YY-MM-DD-dd	I2C, 2-Wire Serial	1.3V ~ 5.5V	-	0.65µA ~ 0.85µA @ 3V ~ 5V	-40°C ~ 85°C (TA)	Surface Mount	-	-	8-MSOP

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.