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
DS1678S+T&R IC RTC TIME EVENT REC I2C 8SOIC Analog Devices Inc./Maxim Integrated	1,188	4.59	RFQ	Datasheet	-	8-SOIC (0.209", 5.30mm Width)	Tape & Reel (TR)	Active	Not Verified	Time Event Recorder	Alarm, Leap Year, NVSRAM, Y2K	32B	HH:MM:SS (12/24 hr)	YY-MM-DD-dd	I2C, 2-Wire Serial	4.5V ~ 5.5V	2.6V ~ 3.5V	-	-40°C ~ 85°C	Surface Mount	-	-	8-SOIC
AB-RTCMC-32.768KHZ-EOA9-S3-HAT IC RTC CLK/CALENDAR SPI MODULE Abracon LLC	4,801	5.88	RFQ	Datasheet	-	10-SMD Module	Tape & Reel (TR)	Active	Not Verified	Clock/Calendar	Alarm, EEPROM, TCXO/Crystal, Trickle-Charger	-	HH:MM:SS:hh	YY-MM-DD-dd	SPI	1.4V ~ 5.5V, 2.1V ~ 5.5V	1.4V ~ 5.5V	4.6µA ~ 5.5µA @ 1.4V ~ 5V	-40°C ~ 125°C	Surface Mount	-	-	Module
AB-RTCMC-32.768KHZ-EOZ9-S3-HAT IC RTC CLK/CALENDAR I2C MODULE Abracon LLC	3,443	5.88	RFQ	Datasheet	-	10-SMD Module	Tape & Reel (TR)	Active	Not Verified	Clock/Calendar	Alarm, EEPROM, TCXO/Crystal, Trickle-Charger	-	HH:MM:SS:hh	YY-MM-DD-dd	I2C	1.4V ~ 5.5V, 2.1V ~ 5.5V	1.4V ~ 5.5V	4.6µA ~ 5.5µA @ 1.4V ~ 5V	-40°C ~ 125°C	Surface Mount	-	-	Module
M41ST87YMX6TR IC RTC CLOCK/CALENDAR I2C 28SO STMicroelectronics	1,811	0.00	RFQ	Datasheet	-	28-SOIC (0.295", 7.50mm Width)	Tape & Reel (TR)	Obsolete	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	4.5V ~ 5.5V	2.5V ~ 5.5V	1mA @ 4.5V ~ 5.5V	-40°C ~ 85°C	Surface Mount	-	-	28-SO
DS17285SN-5 IC RTC CLK/CALENDAR PAR 24SOIC Analog Devices Inc./Maxim Integrated	1,728	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	2KB	HH:MM:SS (12/24 hr)	YY-MM-DD-dd	Parallel	4.5V ~ 5.5V	2.5V ~ 3.7V	3mA @ 4.5V ~ 5.5V	-40°C ~ 85°C	Surface Mount	-	-	24-SOIC
DS17285SN-3 IC RTC CLK/CALENDAR PAR 24SOIC Analog Devices Inc./Maxim Integrated	2,208	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	2KB	HH:MM:SS (12/24 hr)	YY-MM-DD-dd	Parallel	2.7V ~ 3.7V	2.5V ~ 3.7V	2mA @ 2.7V ~ 3.7V	-40°C ~ 85°C	Surface Mount	-	-	24-SOIC
DS17285E-3 IC RTC CLK/CALENDAR PAR 28TSOP Analog Devices Inc./Maxim Integrated	4,855	0.00	RFQ	Datasheet	-	28-TSSOP (0.465", 11.80mm Width)	Bag	Obsolete	Not Verified	Clock/Calendar	Alarm, Daylight Savings, Leap Year, NVSRAM, Square Wave Output	2KB	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	-	-	28-TSOP
M41ST87YMX6 IC RTC CLOCK/CALENDAR I2C 28SO STMicroelectronics	4,653	0.00	RFQ	Datasheet	-	28-SOIC (0.295", 7.50mm Width)	Tube	Obsolete	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	4.5V ~ 5.5V	2.5V ~ 5.5V	1mA @ 4.5V ~ 5.5V	-40°C ~ 85°C	Surface Mount	-	-	28-SO
RX-4571NB:B IC RTC CLK/CALENDAR SER 22SON EPSON	3,701	5.25	RFQ	Datasheet	RX-4571NB	22-LFDFN	Strip	Active	Not Verified	Clock/Calendar	Alarm, Leap Year	-	-	-	3-Wire Serial	1.6V ~ 5.5V	-	0.95µA ~ 1µA @ 3V ~ 5V	-40°C ~ 85°C	Surface Mount	-	-	22-SON (6.3x4.8)
RX-4571NB:BX PURE SN IC RTC CLK/CALENDAR SER 22SON EPSON	3,547	0.00	RFQ	Datasheet	RX-4571NB	22-SMD, 20 Leads, Flat Leads	Tape & Reel (TR)	Active	Not Verified	Clock/Calendar	Alarm, Leap Year	-	-	-	3-Wire Serial	1.6V ~ 5.5V	-	0.95µA ~ 1µA @ 3V ~ 5V	-40°C ~ 85°C	Surface Mount	-	-	22-SON (6.3x4.8)
RX-4801SA:UB3 PURE SN IC RTC CLK/CALENDAR SPI 14SOP EPSON	1,632	0.00	RFQ	Datasheet	RX-4801SA	14-SOIC (0.197", 5.00mm Width)	Tape & Reel (TR)	Obsolete	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	-	-	14-SOP
DS12885T/T&R IC RTC CLK/CALENDAR PAR 32TQFP Analog Devices Inc./Maxim Integrated	4,517	0.00	RFQ	Datasheet	-	32-TQFP	Tape & Reel (TR)	Obsolete	Not Verified	Clock/Calendar	Alarm, Daylight Savings, Leap Year, NVSRAM, Square Wave Output	114B	HH:MM:SS (12/24 hr)	YY-MM-DD-dd	Parallel	4.5V ~ 5.5V	2.5V ~ 4V	15mA @ 4.5V ~ 5.5V	0°C ~ 70°C	Surface Mount	-	-	32-TQFP (7x7)
DS1558W IC RTC CLK/CALENDAR PAR 48LQFP Analog Devices Inc./Maxim Integrated	4,691	1.00	RFQ	Datasheet	-	48-LQFP	Bag	Obsolete	Not Verified	Clock/Calendar	Alarm, Leap Year, Watchdog Timer, Y2K	-	HH:MM:SS (24 hr)	YY-MM-DD-dd	Parallel	2.97V ~ 3.63V	2.5V ~ 3.7V	2mA @ 3.3V	-40°C ~ 85°C	Surface Mount	-	-	48-LQFP (7x7)
DS1558Y IC RTC CLK/CALENDAR PAR 48LQFP Analog Devices Inc./Maxim Integrated	4,905	0.00	RFQ	Datasheet	-	48-LQFP	Bag	Obsolete	Not Verified	Clock/Calendar	Alarm, Leap Year, Watchdog Timer, Y2K	-	HH:MM:SS (24 hr)	YY-MM-DD-dd	Parallel	4.5V ~ 5.5V	2.5V ~ 3.7V	6mA @ 5V	-40°C ~ 85°C	Surface Mount	-	-	48-LQFP (7x7)
M41ST87WMX6 IC RTC CLOCK/CALENDAR I2C 28SO STMicroelectronics	1,452	0.00	RFQ	Datasheet	-	28-SOIC (0.295", 7.50mm Width)	Tube	Obsolete	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	-	-	28-SO
DS1689SN/T&R IC RTC CLK/CALENDAR PAR 28SOIC Analog Devices Inc./Maxim Integrated	3,546	0.00	RFQ	Datasheet	-	28-SOIC (0.337", 8.56mm Width)	Tape & Reel (TR)	Obsolete	Not Verified	Clock/Calendar	NVSRAM	114B	HH:MM:SS (12/24 hr)	YY-MM-DD-dd	Parallel	2.7V ~ 3.3V, 4.5V ~ 5.5V	2.5V ~ 3.7V	2mA @ 3V, 3mA @ 5V	-40°C ~ 85°C	Surface Mount	-	-	28-SOIC
DS1689SN+T&R IC RTC CLK/CALENDAR PAR 28SOIC Analog Devices Inc./Maxim Integrated	4,374	0.00	RFQ	Datasheet	-	28-SOIC (0.337", 8.56mm Width)	Tape & Reel (TR)	Obsolete	Not Verified	Clock/Calendar	NVSRAM	114B	HH:MM:SS (12/24 hr)	YY-MM-DD-dd	Parallel	2.7V ~ 3.3V, 4.5V ~ 5.5V	2.5V ~ 3.7V	2mA @ 3V, 3mA @ 5V	-40°C ~ 85°C	Surface Mount	-	-	28-SOIC
BQ4802YDWRG4 IC RTC CLK/CALENDAR PAR 28SOIC Texas Instruments	2,234	0.00	RFQ	Datasheet	-	28-SOIC (0.295", 7.50mm Width)	Tape & Reel (TR)	Discontinued at Digi-Key	Not Verified	Clock/Calendar	Alarm, Daylight Savings, Leap Year, Supervisor, Watchdog Timer	-	HH:MM:SS (12/24 hr)	YY-MM-DD-dd	Parallel	4.5V ~ 5.5V	2.4V ~ 4V	1.5mA (Typ) @ 4.5 V ~ 5.5 V	0°C ~ 70°C	Surface Mount	-	-	28-SOIC
RTC-4574JE:B3 ROHS IC RTC CLK/CALENDAR SER 20VSOJ EPSON	1,048	0.00	RFQ	Datasheet	RTC-4574JE	20-LSSOJ (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	3-Wire Serial	1.6V ~ 5.5V	-	1µA ~ 2µA @ 3V ~ 5V	-40°C ~ 85°C	Surface Mount	-	-	20-VSOJ
RTC-4574NB:B3 ROHS IC RTC CLK/CALENDAR SER 22SON EPSON	1,538	5.17	RFQ	Datasheet	RTC-4574NB	22-LFDFN	Tape & Reel (TR)	Obsolete	Not Verified	Clock/Calendar	Alarm, Leap Year	-	HH:MM:SS (24 hr)	YY-MM-DD-dd	3-Wire Serial	1.6V ~ 5.5V	-	1µA ~ 2µA @ 3V ~ 5V	-40°C ~ 85°C	Surface Mount	-	-	22-SON (6.3x4.8)

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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