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
DS17285S-5/T&R IC RTC CLK/CALENDAR PAR 24SOIC Analog Devices Inc./Maxim Integrated	4,448	0.00	RFQ	Datasheet	-	24-SOIC (0.295", 7.50mm Width)	Tape & Reel (TR)	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	0°C ~ 70°C	Surface Mount	-	-	24-SOIC
DS12885QN/T&R IC RTC CLK/CALENDAR PAR 28PLCC Analog Devices Inc./Maxim Integrated	4,601	0.00	RFQ	Datasheet	-	28-LCC (J-Lead)	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	-40°C ~ 85°C	Surface Mount	-	-	28-PLCC (11.51x11.51)
ISL12029IB27Z-T IC RTC CLK/CALENDAR I2C 14SOIC Renesas Electronics Corporation	4,663	3.47	RFQ	Datasheet	-	14-SOIC (0.154", 3.90mm Width)	Tape & Reel (TR)	Obsolete	Not Verified	Clock/Calendar	Alarm, Leap Year, Supervisor, Watchdog Timer	-	HH:MM:SS (12/24 hr)	YY-MM-DD-dd	I2C, 2-Wire Serial	2.7V ~ 5.5V	1.8V ~ 5.5V	10µA ~ 20µA @ 2.7V ~ 5.5V	-40°C ~ 85°C	Surface Mount	-	-	14-SOIC
ISL12028IV27Z-T IC RTC CLK/CALENDAR I2C 14TSSOP Renesas Electronics Corporation	4,510	3.47	RFQ	Datasheet	-	14-TSSOP (0.173", 4.40mm Width)	Tape & Reel (TR)	Obsolete	Not Verified	Clock/Calendar	Alarm, Leap Year, Supervisor, Watchdog Timer	-	HH:MM:SS (12/24 hr)	YY-MM-DD-dd	I2C, 2-Wire Serial	2.7V ~ 5.5V	1.8V ~ 5.5V	10µA ~ 20µA @ 2.7V ~ 5.5V	-40°C ~ 85°C	Surface Mount	-	-	14-TSSOP
ISL12027IB27Z-T IC RTC CLK/CALENDAR I2C 8SOIC Renesas Electronics Corporation	3,564	0.00	RFQ	Datasheet	-	8-SOIC (0.154", 3.90mm Width)	Tape & Reel (TR)	Obsolete	Not Verified	Clock/Calendar	Alarm, Leap Year, Supervisor, Watchdog Timer	-	HH:MM:SS (12/24 hr)	YY-MM-DD-dd	I2C, 2-Wire Serial	2.7V ~ 5.5V	1.8V ~ 5.5V	10µA ~ 20µA @ 2.7V ~ 5.5V	-40°C ~ 85°C	Surface Mount	-	-	8-SOIC
ISL1221IUZ IC RTC EVENT REC I2C 10MSOP Renesas Electronics Corporation	1,879	2.83	RFQ	Datasheet	-	10-TFSOP, 10-MSOP (0.118", 3.00mm Width)	Tube	Obsolete	Not Verified	Time Event Recorder	Alarm, Leap Year, SRAM	2B	HH:MM:SS (12/24 hr)	YY-MM-DD-dd	I2C, 2-Wire Serial	2.7V ~ 5.5V	1.8V ~ 5.5V	4µA ~ 6µA @ 3V ~ 5V	-40°C ~ 85°C	Surface Mount	-	-	10-MSOP
RX-4035SA:AAB PURE SN IC RTC TIME EVENT REC SPI 14SOP EPSON	3,291	4.67	RFQ	Datasheet	RX-4035SA	14-SOIC (0.197", 5.00mm Width)	Tube	Active	Not Verified	Time Event Recorder	Alarm	-	-	-	SPI	2.4V ~ 5.5V	1V ~ 5.5V	2.5µA @ 3V	-40°C ~ 85°C	Surface Mount	-	-	14-SOP
DS1558W-TRL IC RTC CLK/CALENDAR PAR 48LQFP Analog Devices Inc./Maxim Integrated	4,763	0.00	RFQ	Datasheet	-	48-LQFP	Tape & Reel (TR)	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-TRL IC RTC CLK/CALENDAR PAR 48LQFP Analog Devices Inc./Maxim Integrated	4,942	0.00	RFQ	Datasheet	-	48-LQFP	Tape & Reel (TR)	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)
RX-4803LCUA0 PURE SN RX-4803LC:UA0 PURE SN RTC +/-3.4 EPSON	1,421	0.00	RFQ	Datasheet	RX-4803LC	12-TFSOJ (0.094", 2.40mm Width)	Tape & Reel (TR)	Active	-	Clock/Calendar	Alarm	-	HH:MM:SS	YY-MM-DD	4-Wire Serial	1.6V ~ 5.5V	1.6V ~ 5.5V	2.1µA ~ 3.4µA @ 3V ~ 5V	-40°C ~ 85°C	Surface Mount	-	-	12-VSOJ
RX-8803LCUA0 PURE SN RX-8803LC:UA0 PURE SN I2C-BUS RT EPSON	3,281	0.00	RFQ	Datasheet	RX-8803LC	12-TFSOJ (0.094", 2.40mm Width)	Tape & Reel (TR)	Active	-	Clock/Calendar	Alarm	-	HH:MM:SS	YY-MM-DD	I2C	1.6V ~ 5.5V	1.6V ~ 5.5V	2.1µA ~ 3.4µA @ 3V ~ 5V	-40°C ~ 85°C	Surface Mount	-	-	12-VSOJ
RX8900SA:UBB PURE SN IC RTC CLK/CALENDAR I2C 14SOP EPSON	3,141	4.72	RFQ	Datasheet	RX8900SA	14-SOIC (0.197", 5.00mm Width)	Bulk	Active	Not Verified	Clock/Calendar	Alarm	-	HH:MM:SS (24 hr)	YY-MM-DD-dd	I2C	2.5V ~ 5.5V	1.6V ~ 5.5V	1.4µA ~ 1.5µA @ 3V ~ 5V	-40°C ~ 85°C	Surface Mount	-	-	14-SOP
RX8900SA:UCB PURE SN IC RTC CLK/CALENDAR I2C 14SOP EPSON	4,865	4.72	RFQ	Datasheet	RX8900SA	14-SOIC (0.197", 5.00mm Width)	Bulk	Active	Not Verified	Clock/Calendar	Alarm	-	HH:MM:SS (24 hr)	YY-MM-DD-dd	I2C	2.5V ~ 5.5V	1.6V ~ 5.5V	1.4µA ~ 1.5µA @ 3V ~ 5V	-40°C ~ 85°C	Surface Mount	-	-	14-SOP
RTC-8564JE:3 IC RTC CLK/CALENDAR I2C 20VSOJ EPSON	1,899	0.00	RFQ	Datasheet	-	20-LSSOJ (0.213", 5.40mm Width)	Tape & Reel (TR)	Obsolete	Not Verified	Clock/Calendar	Alarm, Y2K	-	HH:MM:SS	YY-MM-DD-dd	I2C, 2-Wire Serial	1.8V ~ 5.5V	-	0.7µA ~ 0.8µA @ 3V ~ 5V	-40°C ~ 85°C	Surface Mount	-	-	20-VSOJ
RX8900CE:UBB IC RTC CLK/CALENDAR I2C 10SMD EPSON	1,904	4.75	RFQ	Datasheet	RX8900CE	10-SMD, No Lead	Bulk	Active	Not Verified	Clock/Calendar	Alarm	-	HH:MM:SS (24 hr)	YY-MM-DD-dd	I2C	2.5V ~ 5.5V	1.6V ~ 5.5V	1.4µA ~ 1.5µA @ 3V ~ 5V	-40°C ~ 85°C	Surface Mount	-	-	10-SMD
RX8900CEUCB IC RTC CLK/CALENDAR I2C 10SMD EPSON	2,822	0.00	RFQ	Datasheet	RX8900CE	10-SMD, No Lead	Bulk	Active	Not Verified	Clock/Calendar	Alarm	-	HH:MM:SS	YY-MM-DD	I2C	2.5V ~ 5.5V	1.6V ~ 5.5V	1.4µA ~ 1.5µA @ 3V ~ 5V	-40°C ~ 85°C (TA)	Surface Mount	-	-	10-SMD
MAX6917EO33+T IC RTC CLK/CAL/SUPER I2C 20QSOP Analog Devices Inc./Maxim Integrated	3,397	0.00	RFQ	Datasheet	-	20-SSOP (0.154", 3.90mm Width)	Tape & Reel (TR)	Obsolete	Not Verified	Clock/Calendar/Supervisor	-	96B	HH:MM:SS (12/24 hr)	YY-MM-DD-dd	I2C, 2-Wire Serial	3V ~ 3.6V	-	-	-40°C ~ 85°C	Surface Mount	-	-	20-QSOP
MAX6916EO30+T IC RTC CLK/CAL/SUPER SPI 20QSOP Analog Devices Inc./Maxim Integrated	3,522	0.00	RFQ	Datasheet	-	20-SSOP (0.154", 3.90mm Width)	Tape & Reel (TR)	Obsolete	Not Verified	Clock/Calendar/Supervisor	-	96B	HH:MM:SS (12/24 hr)	YY-MM-DD-dd	SPI, 3-Wire Serial	2.7V ~ 3.3V	-	-	-	Surface Mount	-	-	20-QSOP
MAX6916EO33+T IC RTC CLK/CAL/SUPER SPI 20QSOP Analog Devices Inc./Maxim Integrated	2,418	0.00	RFQ	Datasheet	-	20-SSOP (0.154", 3.90mm Width)	Tape & Reel (TR)	Obsolete	Not Verified	Clock/Calendar/Supervisor	-	96B	HH:MM:SS (12/24 hr)	YY-MM-DD-dd	SPI, 3-Wire Serial	3V ~ 3.6V	-	-	-	Surface Mount	-	-	20-QSOP
MAX6916EO50+T IC RTC CLK/CAL/SUPER SPI 20QSOP Analog Devices Inc./Maxim Integrated	4,525	0.00	RFQ	Datasheet	-	20-SSOP (0.154", 3.90mm Width)	Tape & Reel (TR)	Obsolete	Not Verified	Clock/Calendar/Supervisor	-	96B	HH:MM:SS (12/24 hr)	YY-MM-DD-dd	SPI, 3-Wire Serial	4.5V ~ 5.5V	-	-	-	Surface Mount	-	-	20-QSOP

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.

How can I request pricing and availability?

Submit the part number, manufacturer and required quantity through our RFQ form. JIEXIN Electronics will review your request and provide available stock, pricing and sourcing information.