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
DS1343D-18+ IC RTC CLK/CALENDAR SPI 14TDFN Analog Devices Inc./Maxim Integrated	2,123	1.00	RFQ	Datasheet	-	14-WFDFN Exposed Pad	Tube	Obsolete	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	1.71V ~ 5.5V	1.3V ~ 5.5V	-	-40°C ~ 85°C	Surface Mount	-	-	14-TDFN (3x3)
DS1347T+ IC RTC CLK/CALENDAR SPI 8TDFN Analog Devices Inc./Maxim Integrated	1,504	0.00	RFQ	Datasheet	-	8-WDFN Exposed Pad	Tube	Active	Not Verified	Clock/Calendar	Alarm, Leap Year, SRAM	-	HH:MM:SS (12/24 hr)	YY-MM-DD-dd	SPI	2V ~ 5.5V	-	0.7µA ~ 0.8µA @ 2V ~ 5V	-40°C ~ 85°C	Surface Mount	-	-	8-TDFN (3x3)
AS1801-BTDT ULTRA-LOW POWER, IC SERIAL REAL- Austria Micro	4,150		RFQ	Datasheet	-	8-UFDFN Exposed Pad	Tape & Reel (TR)	Active	Not Verified	Clock/Calendar	Alarm, Leap Year, Square Wave Output, Trickle-Charger	-	HH:MM:SS (12/24 hr)	YY-MM-DD-dd	I2C, 2-Wire Serial	1.8V ~ 3.6V	0.9V ~ 3.6V	0.5µA @ 1.5V	-40°C ~ 85°C	Surface Mount	-	-	8-TDFN (2x2)
PCF2123U/12AA/1,00 IC RTC/CALENDAR SPI UNCASED NXP USA Inc.	3,240	0.00	RFQ	Datasheet	*	-	Bulk	Obsolete	Not Verified	-	-	-	-	-	-	-	-	-	-	-	-	-	-
PCF2123U/5GA/1,015 IC RTC/CALENDAR SPI UNCASED NXP USA Inc.	2,749	0.00	RFQ	Datasheet	*	-	Bulk	Obsolete	Not Verified	-	-	-	-	-	-	-	-	-	-	-	-	-	-
PCF8523U/12AA/1,00 IC RTC/CALENDAR UNCASED DIE FFC NXP USA Inc.	3,025	0.83	RFQ	Datasheet	*	-	Bulk	Obsolete	Not Verified	-	-	-	-	-	-	-	-	-	-	-	-	-	-
PCF8564AU/5BD/1,01 IC RTC/CALENDAR UNCASED DIE NXP USA Inc.	1,879	0.00	RFQ	Datasheet	*	-	Bulk	Obsolete	Not Verified	-	-	-	-	-	-	-	-	-	-	-	-	-	-
DS1339AD+T IC RTC CLOCK/CALENDAR I2C 8TDFN Analog Devices Inc./Maxim Integrated	3,320	0.00	RFQ	Datasheet	-	-	Tape & Reel (TR)	Active	Not Verified	Clock/Calendar	Alarm, Leap Year, Square Wave Output, Trickle-Charger	-	HH:MM:SS (12/24 hr)	YY-MM-DD-dd	I2C, 2-Wire Serial	1.71V ~ 5.5V	1.3V ~ 3.7V	200µA @ 1.71V ~ 5.5V	-40°C ~ 85°C	Surface Mount	-	-	8-TDFN EP
DS1341T+ IC RTC CLK/CALENDAR I2C 8TDFN Analog Devices Inc./Maxim Integrated	1,966	0.00	RFQ	Datasheet	-	8-WDFN Exposed Pad	Tube	Active	Not Verified	Clock/Calendar	Alarm, Leap Year, Square Wave Output	-	HH:MM:SS (12/24 hr)	YY-MM-DD-dd	I2C, 2-Wire Serial	1.8V ~ 5.5V	-	0.5µA ~ 0.6µA @ 3V ~ 5V	-40°C ~ 85°C	Surface Mount	-	-	8-TDFN (3x3)
PCA8802CX8/B/1,027 IC RTC BINARY COUNTER I2C DIE NXP USA Inc.	2,870	0.00	RFQ	Datasheet	-	Die	Tape & Reel (TR)	Obsolete	Not Verified	Binary Counter	Square Wave Output, Unique ID	-	Binary	Binary	I2C, 2-Wire Serial	1.6V ~ 5.5V	-	0.4µA @ 1.6V ~ 5.5V	-40°C ~ 85°C	-	-	-	Die
DP8573AVX IC RTC CLK/CALENDAR PAR 28PLCC Texas Instruments	3,451	14.07	RFQ	Datasheet	-	28-LCC (J-Lead)	Tape & Reel (TR)	Obsolete	Not Verified	Clock/Calendar	Alarm, Leap Year	-	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)
DS1254WB2-150 IC RTC PHANTOM CHIP PAR 80BGA Analog Devices Inc./Maxim Integrated	3,644	0.00	RFQ	Datasheet	-	80-BBGA	Tray	Obsolete	Not Verified	Phantom Time Chip	Leap Year, NVSRAM	2MB	HH:MM:SS:hh (12/24 hr)	YY-MM-DD-dd	Parallel	3V ~ 3.7V	3V	7mA @ 3.3V	0°C ~ 70°C	Surface Mount	-	-	80-BGA (40x40)
DS1318 IC RTC ELAPSED CNT PAR 24TSSOP Analog Devices Inc./Maxim Integrated	2,869	1.00	RFQ	Datasheet	-	24-TSSOP (0.173", 4.40mm Width)	Tube	Obsolete	Not Verified	Elapsed Time Counter	Alarm, Square Wave Output	-	Binary	Binary	Parallel	3V ~ 3.6V	1.6V ~ 3.7V	150µA @ 3V ~ 3.6V	-40°C ~ 85°C	Surface Mount	-	-	24-TSSOP
DS1371U IC RTC BINARY COUNTER I2C 8UMAX Analog Devices Inc./Maxim Integrated	2,415	1.00	RFQ	Datasheet	-	8-TSSOP, 8-MSOP (0.118", 3.00mm Width)	Tube	Obsolete	Not Verified	Binary Counter	Alarm, Square Wave Output, Watchdog Timer	-	Binary	Binary	I2C, 2-Wire Serial	1.7V ~ 5.5V	-	1.3µA @ 1.7V ~ 5.5V	-40°C ~ 85°C	Surface Mount	-	-	8-uMAX/uSOP
DS1374U-33 IC RTC BINARY COUNTER I2C 10UMAX Analog Devices Inc./Maxim Integrated	2,469	1.00	RFQ	Datasheet	-	10-TFSOP, 10-MSOP (0.118", 3.00mm Width)	Tube	Obsolete	Not Verified	Binary Counter	Alarm, Square Wave Output, Trickle-Charger, Watchdog Timer	-	Binary	Binary	I2C, 2-Wire Serial	2.97V ~ 5.5V	1.3V ~ 5.5V	175µA @ 2.97V ~ 5.5V	-40°C ~ 85°C	Surface Mount	-	-	10-uMAX/uSOP
DS1391U-33 IC RTC CLK/CALENDAR SPI 10UMAX Analog Devices Inc./Maxim Integrated	4,098	0.00	RFQ	Datasheet	-	10-TFSOP, 10-MSOP (0.118", 3.00mm Width)	Tube	Obsolete	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
PCA8802U/2AA/1,026 IC RTC BINARY COUNTER I2C DIE NXP USA Inc.	4,083	0.00	RFQ	Datasheet	-	Die	Tray	Obsolete	Not Verified	Binary Counter	Square Wave Output, Unique ID	-	Binary	Binary	I2C, 2-Wire Serial	1.6V ~ 5.5V	-	0.4µA @ 1.6V ~ 5.5V	-40°C ~ 85°C	-	-	-	Die
PCA8802UG/12KB/1,0 IC RTC BINARY COUNTER I2C 8WLCSP NXP USA Inc.	3,124	0.00	RFQ	Datasheet	-	8-XFBGA, WLCSP	Bulk	Obsolete	Not Verified	Binary Counter	Square Wave Output, Unique ID	-	Binary	Binary	I2C, 2-Wire Serial	1.6V ~ 5.5V	-	0.4µA @ 1.6V ~ 5.5V	-40°C ~ 85°C	Surface Mount	-	-	8-WLCSP
PCF8564AU/5GC/1,01 IC RTC CLOCK/CALENDAR I2C DIE NXP USA Inc.	2,372	0.00	RFQ	Datasheet	-	Die	Bulk	Obsolete	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
1337GDCGI8 IC RTC CLK/CALENDAR I2C 8SOIC Renesas Electronics Corporation	1,487	0.00	RFQ	Datasheet	-	8-SOIC (0.154", 3.90mm Width)	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, 2-Wire Serial	1.8V ~ 5.5V	-	0.6µA @ 1.3V ~ 1.8V	-40°C ~ 85°C	Surface Mount	-	-	8-SOIC

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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