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
DS1501YZ+T&R IC RTC CLK/CALENDAR PAR 28SOIC Analog Devices Inc./Maxim Integrated	3,245	7.55	RFQ	Datasheet	-	28-SOIC (0.295", 7.50mm Width)	Tape & Reel (TR)	Active	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	Surface Mount	-	-	28-SOIC
RTC-7301SF:B3 ROHS IC RTC CLK/CALENDAR PAR 24SSOP EPSON	4,382	8.90	RFQ	Datasheet	-	24-SOP (0.213", 5.40mm Width)	Tape & Reel (TR)	Obsolete	Not Verified	Clock/Calendar	Alarm, Leap Year	-	HH:MM:SS (24 hr)	YY-MM-DD-dd	Parallel	2.4V ~ 5.5V	-	1µA ~ 2µA @ 3V ~ 5V	-40°C ~ 85°C	Surface Mount	-	-	24-SSOP
M48T201V-85MH1E IC RTC CLK/CALENDAR PAR 44SOH STMicroelectronics	3,179	0.00	RFQ	Datasheet	Timekeeper®	44-BSOP (0.337", 8.56mm Width) requires SNAPHAT	Tube	Obsolete	Not Verified	Clock/Calendar	Alarm, Leap Year, Square Wave Output, Supervisor, Watchdog Timer, Y2K	-	HH:MM:SS (24 hr)	YY-MM-DD-dd	Parallel	3V ~ 3.6V	3V	2mA @ 3V ~ 3.6V	0°C ~ 70°C	Surface Mount	-	-	44-SOH
M48T201Y-70MH1E IC RTC CLK/CALENDAR PAR 44SOH STMicroelectronics	1,746	0.00	RFQ	Datasheet	Timekeeper®	44-BSOP (0.337", 8.56mm Width) requires SNAPHAT	Tube	Obsolete	Not Verified	Clock/Calendar	Alarm, Leap Year, Square Wave Output, Supervisor, Watchdog Timer, Y2K	-	HH:MM:SS (24 hr)	YY-MM-DD-dd	Parallel	4.5V ~ 5.5V	3V	3mA @ 4.5V ~ 5.5V	0°C ~ 70°C	Surface Mount	-	-	44-SOH
DS1615 IC RTC TEMP RECORDER SER 16DIP Analog Devices Inc./Maxim Integrated	2,194	0.00	RFQ	Datasheet	-	16-DIP (0.300", 7.62mm)	Tube	Obsolete	Not Verified	Temperature Recorder	Alarm, Leap Year, Unique ID, Y2K	32B	HH:MM:SS (12/24 hr)	YY-MM-DD-dd	3-Wire Serial	4V ~ 5.5V	2.7V ~ 4.95V	0.5µA @ 5V	-40°C ~ 85°C	Through Hole	-	-	16-PDIP
DS1384FP-12+ IC RTC CLK/CALENDAR PAR 44MQFP Analog Devices Inc./Maxim Integrated	4,734	0.00	RFQ	Datasheet	-	44-QFP	Bag	Obsolete	Not Verified	Clock/Calendar	Alarm, Leap Year, Square Wave Output, Watchdog Timer	50B	HH:MM:SS:hh (12/24 hr)	YY-MM-DD-dd	Parallel	4.5V ~ 5.5V	2.4V ~ 4V	3mA @ 5V	0°C ~ 70°C	Surface Mount	-	-	44-MQFP (10x10)
DS32C35-33# IC RTC CLK/CALENDAR I2C 20SOIC Analog Devices Inc./Maxim Integrated	4,087	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	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
DS32C35-33IND# IC RTC CLK/CALENDAR I2C 20SOIC Analog Devices Inc./Maxim Integrated	1,233	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	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	-40°C ~ 85°C	Surface Mount	-	-	20-SOIC
DS1315EN-5 IC RTC PHANTOM CHIP PAR 20TSSOP Analog Devices Inc./Maxim Integrated	4,906	1.00	RFQ	Datasheet	-	20-TSSOP (0.173", 4.40mm Width)	Tube	Obsolete	Not Verified	Phantom Time Chip	Leap Year	-	HH:MM:SS:hh (12/24 hr)	YY-MM-DD-dd	Parallel	4.5V ~ 5.5V	2.5V ~ 3.7V	1.3mA @ 5V	-40°C ~ 85°C	Surface Mount	-	-	20-TSSOP
DS1315SN-33 IC RTC PHANTOM CHIP PAR 16SOIC Analog Devices Inc./Maxim Integrated	3,833	1.00	RFQ	Datasheet	-	16-SOIC (0.295", 7.50mm Width)	Tube	Obsolete	Not Verified	Phantom Time Chip	Leap Year	-	HH:MM:SS:hh (12/24 hr)	YY-MM-DD-dd	Parallel	3V ~ 3.6V	2.5V ~ 3.7V	1.1mA @ 3.3V	-40°C ~ 85°C	Surface Mount	-	-	16-SOIC
M48T212V-85MH1F IC RTC CLK/CALENDAR PAR 44SOH STMicroelectronics	3,445	0.00	RFQ	Datasheet	Timekeeper®	44-BSOP (0.337", 8.56mm Width) requires SNAPHAT	Tape & Reel (TR)	Obsolete	Not Verified	Clock/Calendar	Alarm, Leap Year, Watchdog Timer, Y2K	-	HH:MM:SS (24 hr)	YY-MM-DD-dd	Parallel	3V ~ 3.6V	3V	2mA @ 3V ~ 3.6V	0°C ~ 70°C	Surface Mount	-	-	44-SOH
DS17485S-3+ IC RTC CLK/CALENDAR PAR 24SOIC Analog Devices Inc./Maxim Integrated	4,728	0.00	RFQ	Datasheet	-	24-SOIC (0.295", 7.50mm Width)	Tube	Obsolete	Not Verified	Clock/Calendar	Alarm, Daylight Savings, Leap Year, NVSRAM, Square Wave Output	4KB	HH:MM:SS (12/24 hr)	YY-MM-DD-dd	Parallel	2.7V ~ 3.7V	2.5V ~ 3.7V	2mA @ 2.7V ~ 3.7V	0°C ~ 70°C	Surface Mount	-	-	24-SOIC
M48T59Y-70MH6E IC RTC CLK/CALENDAR PAR 28SOH STMicroelectronics	4,307	0.00	RFQ	Datasheet	Timekeeper®	28-SOP (0.350", 8.89mm Width) with SNAPHAT Sockets	Tube	Obsolete	Not Verified	Clock/Calendar	Alarm, Leap Year, Watchdog Timer	-	HH:MM:SS (24 hr)	YY-MM-DD-dd	Parallel	4.5V ~ 5.5V	-	3mA @ 4.5V ~ 5.5V	-40°C ~ 85°C	Surface Mount	-	-	28-SOH
M41T256YMT7F IC RTC CLK/CALENDAR I2C 44SOH STMicroelectronics	2,349	0.00	RFQ	Datasheet	Timekeeper®	44-BSOP (0.337", 8.56mm Width)	Tape & Reel (TR)	Obsolete	Not Verified	Clock/Calendar	Leap Year, NVSRAM	32KB	HH:MM:SS:hh (24 hr)	YY-MM-DD-dd	I2C, 2-Wire Serial	4.5V ~ 5.5V	2.5V ~ 3.5V	2.5mA @ 4.5V ~ 5.5V	-25°C ~ 70°C	Surface Mount	-	-	44-SOH
DS1501YZN+T&R IC RTC CLK/CALENDAR PAR 28SOIC Analog Devices Inc./Maxim Integrated	1,824	8.84	RFQ	Datasheet	-	28-SOIC (0.295", 7.50mm Width)	Tape & Reel (TR)	Active	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	-40°C ~ 85°C	Surface Mount	-	-	28-SOIC
DS17485S-5+T&R IC RTC CLK/CALENDAR PAR 24SOIC Analog Devices Inc./Maxim Integrated	1,076	9.02	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	4KB	HH:MM:SS (12/24 hr)	YY-MM-DD-dd	Parallel	4.5V ~ 5.5V	2.5V ~ 3.7V	3mA @ 4.5V ~ 5.5V	0°C ~ 70°C	Surface Mount	-	-	24-SOIC
M41T256YMH7F IC RTC CLK/CALENDAR I2C 44SOH STMicroelectronics	2,906	0.00	RFQ	Datasheet	Timekeeper®	44-BSOP (0.337", 8.56mm Width) requires SNAPHAT	Tape & Reel (TR)	Obsolete	Not Verified	Clock/Calendar	Leap Year, NVSRAM	32KB	HH:MM:SS:hh (24 hr)	YY-MM-DD-dd	I2C, 2-Wire Serial	4.5V ~ 5.5V	2.5V ~ 3.5V	2.5mA @ 4.5V ~ 5.5V	-25°C ~ 70°C	Surface Mount	-	-	44-SOH
COM-10079 REAL TIME CLOCK - DS3234 SparkFun Electronics	2,305	0.00	RFQ	Datasheet	-	20-SOIC (0.295", 7.50mm Width)	Bulk	Active	Not Verified	Clock/Calendar	Alarm, Leap Year, Square Wave Output, SRAM	256B	HH:MM:SS (12/24 hr)	YY-MM-DD	SPI	2V ~ 5.5V	2V ~ 3.8V	120µA ~ 160µA @ 3.63V ~ 5.5V	0°C ~ 70°C (TA)	Surface Mount	-	-	20-SOIC
DS1501WZ+ IC RTC CLK/CALENDAR PAR 28SOIC Analog Devices Inc./Maxim Integrated	1,808	9.73	RFQ	Datasheet	-	28-SOIC (0.295", 7.50mm Width)	Tube	Active	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	Surface Mount	-	-	28-SOIC
RX-4803LC:AA3 PURE SN IC RTC CLK/CALENDAR SPI 12VSOJ EPSON	1,126	11.90	RFQ	Datasheet	RX-4803LC	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	SPI	1.6V ~ 5.5V	-	2.1µA ~ 3.4µA @ 3V ~ 5V	-40°C ~ 85°C	Surface Mount	-	-	12-VSOJ

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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