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
M48T08-100PC1 IC RTC CLK/CALENDAR PAR 28DIP STMicroelectronics	1,999	26.53	RFQ	Datasheet	Timekeeper®	28-DIP Module (0.600", 15.24mm)	Tube	Active	Not Verified	Clock/Calendar	Leap Year, Watchdog Timer	-	HH:MM:SS (24 hr)	YY-MM-DD-dd	Parallel	4.75V ~ 5.5V	-	3mA @ 4.7V ~ 5.5V	0°C ~ 70°C	Through Hole	-	-	28-PCDIP, CAPHAT®
M48T35Y-70PC1 IC RTC CLK/CALENDAR PAR 28DIP STMicroelectronics	2,073	32.18	RFQ	Datasheet	Timekeeper®	28-DIP Module (0.600", 15.24mm)	Tube	Active	Not Verified	Clock/Calendar	Leap Year	-	HH:MM:SS (24 hr)	YY-MM-DD-dd	Parallel	4.5V ~ 5.5V	-	2mA @ 4.75V ~ 5.5V	0°C ~ 70°C	Through Hole	-	-	28-PCDIP, CAPHAT®
DP8570AV/NOPB IC RTC TIMER PERIPH PAR 28PLCC Texas Instruments	3,369	35.04	RFQ	Datasheet	-	28-LCC (J-Lead)	Tube	Active	Not Verified	Timer Clock Peripheral (TCP)	Alarm, Leap Year	44B	HH:MM:SS:hh (12/24 hr)	YY-MM-DD-dd	Parallel	4.5V ~ 5.5V	2.2V ~ 5.1V	1µA @ 5V	-40°C ~ 85°C	Surface Mount	-	-	28-PLCC (11.51x11.51)
DS1248Y-70IND+ IC RTC PHANTOM CHIP PAR 32EDIP Analog Devices Inc./Maxim Integrated	1,626	43.67	RFQ	Datasheet	-	32-DIP Module (0.600", 15.24mm)	Tube	Active	Not Verified	Phantom Time Chip	NVSRAM	128KB	HH:MM:SS:hh (12/24 hr)	YY-MM-DD-dd	Parallel	4.5V ~ 5.5V	-	10mA @ 5V	-40°C ~ 85°C	Through Hole	-	-	32-EDIP
R2061L01-E2 IC RTC CLK/CALENDAR SER 16QFN Nisshinbo Micro Devices Inc.	1,025	1.72	RFQ	Datasheet	-	16-XFQFN 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	2.34V ~ 5.5V	-	1µA @ 3V	-40°C ~ 85°C	Surface Mount	-	-	QFN023023-16
R2223T-E2-F IC RTC CLK/CALENDAR I2C 10TSSOP Nisshinbo Micro Devices Inc.	3,247	1.72	RFQ	Datasheet	-	10-VFSOP, 10-MSOP (0.110", 2.80mm Width)	Tape & Reel (TR)	Active	Not Verified	Clock/Calendar	Alarm, Leap Year, RAM	-	HH:MM:SS (12/24 hr)	YY-MM-DD-dd	I2C, 2-Wire Serial	1.5V ~ 5.5V	-	0.9µA @ 3V	-40°C ~ 85°C	Surface Mount	-	-	10-TSSOPG
DS1685EN-5+ IC RTC CLK/CALENDAR PAR 24TSSOP Analog Devices Inc./Maxim Integrated	4,160	8.59	RFQ	Datasheet	-	24-TSSOP (0.173", 4.40mm Width)	Tube	Active	Not Verified	Clock/Calendar	Alarm, NVSRAM, Square Wave Output, Y2K	242B	HH:MM:SS (12/24 hr)	YY-MM-DD-dd	Parallel	4.5V ~ 5.5V	2.5V ~ 3.7V	3mA @ 5V	-40°C ~ 85°C	Surface Mount	-	-	24-TSSOP
DS1672U-3+ IC RTC BINARY COUNTER I2C 8UMAX Analog Devices Inc./Maxim Integrated	3,044	4.96	RFQ	Datasheet	-	8-TSSOP, 8-MSOP (0.118", 3.00mm Width)	Tube	Active	Not Verified	Binary Counter	Trickle-Charger	-	Binary	Binary	I2C, 2-Wire Serial	2.7V ~ 3.3V	1.3V ~ 3.63V	500µA @ 3.3V	-40°C ~ 85°C	Surface Mount	-	-	8-uMAX/uSOP
M48T18-150PC1 IC RTC CLK/CALENDAR PAR 28DIP STMicroelectronics	2,059	31.31	RFQ	Datasheet	Timekeeper®	28-DIP Module (0.600", 15.24mm)	Tube	Active	Not Verified	Clock/Calendar	Leap Year, Watchdog Timer	-	HH:MM:SS (24 hr)	YY-MM-DD-dd	Parallel	4.5V ~ 5.5V	-	3mA @ 4.5V ~ 5.5V	0°C ~ 70°C	Through Hole	-	-	28-PCDIP, CAPHAT®
DS1315N-5+ IC RTC PHANTOM CHIP PAR 16DIP Analog Devices Inc./Maxim Integrated	4,818	20.10	RFQ	Datasheet	-	16-DIP (0.300", 7.62mm)	Tube	Active	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	Through Hole	-	-	16-PDIP
MAX31342EWA+T IC RTC CLK/CALENDAR I2C 8WLP Analog Devices Inc./Maxim Integrated	4,911	0.69	RFQ	Datasheet	-	8-WFBGA, WLBGA	Tape & Reel (TR)	Active	Not Verified	Clock/Calendar	Alarm, Leap Year, Square Wave Output	-	HH:MM:SS (12/24 hr)	YY-MM-DD-dd	I2C	1.6V ~ 3.6V	-	0.33µA @ 3V	-40°C ~ 85°C	Surface Mount	-	-	8-WLP (.97x1.97)
MAX31331TETB+ ULTRA-LOW POWER 12C REAL TIME CL Analog Devices Inc./Maxim Integrated	1,103	0.00	RFQ	Datasheet	-	10-WFDFN Exposed Pad	Tray	Active	-	Clock/Calendar	Alarm, Leap Year, RAM, Square Wave Output, Trickle Charger	32B	HH:MM:SS (12/24 hr)	YY-MM-DD	I2C	1.1V ~ 5.5V	1.1V ~ 5.5V	0.65µA ~ 0.7µA @ 1.1V ~ 5.5V	-40°C ~ 85°C (TA)	Surface Mount	-	-	10-TDFN (3x3)
MAX31329NELB+ INTEGRATED RC17 W/ NDK CRYSTAL Analog Devices Inc./Maxim Integrated	1,784	0.00	RFQ	Datasheet	-	10-LLGA	Tray	Active	-	Clock/Calendar	Alarm, Leap Year, RAM, Square Wave Output, Trickle Charger	64B	HH:MM:SS (12/24 hr)	YY-MM-DD-dd	I2C	1.6V ~ 5.5V	1.6V ~ 5.5V	0.5µA ~ 0.7µA @ 1.6V ~ 5.5V	-40°C ~ 85°C	Surface Mount	-	-	10-LGA (5x5)
MAX31328NELB+T INTEGRATED DS3231SN W/ NDK CRYST Analog Devices Inc./Maxim Integrated	4,608	0.00	RFQ	Datasheet	-	10-LLGA	Tape & Reel (TR)	Active	-	Clock/Calendar	Alarm, Leap Year, Square Wave Output, TCXO/Crystal	-	HH:MM:SS (12/24 hr)	YY-MM-DD-dd	I2C	2.3V ~ 5.5V	2.3V ~ 5.5V	3µA ~ 3.5µA @ 3V ~ 5.5V	-40°C ~ 85°C (TA)	Surface Mount	-	-	10-LGA (5x5)
DS1685Q-5+ IC RTC CLK/CALENDAR PAR 28PLCC Analog Devices Inc./Maxim Integrated	4,691	6.19	RFQ	Datasheet	-	28-LCC (J-Lead)	Tube	Active	Not Verified	Clock/Calendar	Alarm, NVSRAM, Square Wave Output, Y2K	242B	HH:MM:SS (12/24 hr)	YY-MM-DD-dd	Parallel	4.5V ~ 5.5V	2.5V ~ 3.7V	3mA @ 5V	0°C ~ 70°C	Surface Mount	-	-	28-PLCC (11.51x11.51)
M48T08-150PC1 IC RTC CLK/CALENDAR PAR 28DIP STMicroelectronics	4,629	37.62	RFQ	Datasheet	Timekeeper®	28-DIP Module (0.600", 15.24mm)	Tube	Active	Not Verified	Clock/Calendar	Leap Year, Watchdog Timer	-	HH:MM:SS (24 hr)	YY-MM-DD-dd	Parallel	4.75V ~ 5.5V	-	3mA @ 4.7V ~ 5.5V	0°C ~ 70°C	Through Hole	-	-	28-PCDIP, CAPHAT®
PCF8564AU/5GB/1,01 IC RTC CLOCK/CALENDAR I2C DIE NXP USA Inc.	4,074	0.51	RFQ	Datasheet	-	Die	Bulk	Active	Not Verified	Clock/Calendar	Alarm, Leap Year, Square Wave Output, Watchdog Timer	-	HH:MM:SS (24 hr)	YY-MM-DD-dd	I2C, 2-Wire Serial	1V ~ 5.5V	-	0.6µA ~ 0.75µA @ 2V ~ 5V	-40°C ~ 85°C	Surface Mount	-	-	Die
PCF8564AU/5BB/1,01 IC RTC CLOCK/CALENDAR I2C DIE NXP USA Inc.	1,485	0.51	RFQ	Datasheet	-	Die	Bulk	Active	Not Verified	Clock/Calendar	Alarm, Leap Year, Square Wave Output, Watchdog Timer	-	HH:MM:SS (24 hr)	YY-MM-DD-dd	I2C, 2-Wire Serial	1V ~ 5.5V	-	0.6µA ~ 0.75µA @ 2V ~ 5V	-40°C ~ 85°C	Surface Mount	-	-	Die
PT7C4563BUEX IC RTC I2C SER 8MSOP T&R 2.5K Diodes Incorporated	2,201	0.44	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
PCF2123U/12HA/1,00 IC RTC CLOCK/CALENDAR SPI DIE NXP USA Inc.	1,550	0.57	RFQ	Datasheet	-	Die	Bulk	Active	Not Verified	Clock/Calendar	Alarm, Leap Year, Square Wave Output, Watchdog Timer	-	HH:MM:SS (12/24 hr)	YY-MM-DD-dd	SPI	1.6V ~ 5.5V	-	0.33µA ~ 0.38µA @ 2V ~ 5V	-40°C ~ 85°C	-	-	-	Die

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.

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