Real Time Clocks

Browse available Real Time Clocks part numbers with manufacturer references, stock information, pricing, datasheets and key specifications. Use the table below to compare options for your project.

For BOM, shortage or hard-to-find requirements, send your part number and quantity to Winsun (HK) Electronics for availability, lead-time and quotation support.

Compare Part Numbers Review available models and manufacturers

Datasheets & Specifications Access technical references quickly

RFQ & BOM Support Send quantities for sourcing and quotation

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
MAX6917EO30+T IC RTC CLK/CAL/SUPER I2C 20QSOP Analog Devices Inc./Maxim Integrated	2,370	-	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	2.7V ~ 3.3V	-	-	-40°C ~ 85°C	Surface Mount	-	-	20-QSOP
MAX6917EO50+T IC RTC CLK/CAL/SUPER I2C 20QSOP Analog Devices Inc./Maxim Integrated	1,277	-	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	4.5V ~ 5.5V	-	-	-40°C ~ 85°C	Surface Mount	-	-	20-QSOP
MAX6909EO30+T IC RTC CLK/CAL/SUPER I2C 20QSOP Analog Devices Inc./Maxim Integrated	2,276	-	RFQ	Datasheet	-	20-SSOP (0.154", 3.90mm Width)	Tape & Reel (TR)	Obsolete	Not Verified	Clock/Calendar/Supervisor	-	31B	HH:MM:SS (12/24 hr)	YY-MM-DD-dd	I2C, 2-Wire Serial	2.7V ~ 3.3V	-	-	-	Surface Mount	-	-	20-QSOP
MAX6909EO33+T IC RTC CLK/CAL/SUPER I2C 20QSOP Analog Devices Inc./Maxim Integrated	2,549	-	RFQ	Datasheet	-	20-SSOP (0.154", 3.90mm Width)	Tape & Reel (TR)	Obsolete	Not Verified	Clock/Calendar/Supervisor	-	31B	HH:MM:SS (12/24 hr)	YY-MM-DD-dd	I2C, 2-Wire Serial	3V ~ 3.6V	-	-	-	Surface Mount	-	-	20-QSOP
ISL12022MIBZ-T7A IC RTC CLK/CALENDAR I2C 20SOIC Renesas Electronics Corporation	4,919	-	RFQ	Datasheet	-	20-SOIC (0.295", 7.50mm Width)	Tape & Reel (TR)	Obsolete	Not Verified	Clock/Calendar	Alarm, Daylight Savings, Leap Year, SRAM	128B	HH:MM:SS (12/24 hr)	YY-MM-DD-dd	I2C, 2-Wire Serial	2.7V ~ 5.5V	1.8V ~ 5.5V	14µA ~ 15µA @ 3V ~ 5V	-40°C ~ 85°C	Surface Mount	-	-	20-SOIC
M41ST85WMH6TR IC RTC CLK/CALENDAR I2C 28SOH STMicroelectronics	3,947	-	RFQ	Datasheet	-	28-SOP (0.350", 8.89mm Width) with SNAPHAT Sockets	Tape & Reel (TR)	Obsolete	Not Verified	Clock/Calendar	Alarm, Leap Year, NVSRAM, Square Wave Output, Supervisor, Watchdog Timer	44B	HH:MM:SS:hh (24 hr)	YY-MM-DD-dd	I2C, 2-Wire Serial	2.7V ~ 3.6V	2.5V ~ 3.5V	0.5mA @ 2.7V ~ 3.6V	-40°C ~ 85°C	Surface Mount	-	-	28-SOH
DS1689S IC RTC CLK/CALENDAR PAR 28SOIC Analog Devices Inc./Maxim Integrated	3,977	-	RFQ	Datasheet	-	28-SOIC (0.337", 8.56mm Width)	Tube	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	0°C ~ 70°C	Surface Mount	-	-	28-SOIC
DS1501Y IC RTC CLK/CALENDAR PAR 28DIP Analog Devices Inc./Maxim Integrated	3,048	-	RFQ	Datasheet	-	28-DIP (0.600", 15.24mm)	Tube	Obsolete	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	Through Hole	-	-	28-PDIP
DS1501W IC RTC CLK/CALENDAR PAR 28DIP Analog Devices Inc./Maxim Integrated	2,307	-	RFQ	Datasheet	-	28-DIP (0.600", 15.24mm)	Tube	Obsolete	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	Through Hole	-	-	28-PDIP
MAX6910EO33+T IC RTC CLK/CAL/SUPER I2C 20QSOP Analog Devices Inc./Maxim Integrated	1,391	-	RFQ	Datasheet	-	20-SSOP (0.154", 3.90mm Width)	Tape & Reel (TR)	Obsolete	Not Verified	Clock/Calendar/Supervisor	-	31B	HH:MM:SS (12/24 hr)	YY-MM-DD-dd	I2C, 2-Wire Serial	3V ~ 3.6V	-	-	-	Surface Mount	-	-	20-QSOP
MAX6910EO30+T IC RTC CLK/CAL/SUPER I2C 20QSOP Analog Devices Inc./Maxim Integrated	3,036	-	RFQ	Datasheet	-	20-SSOP (0.154", 3.90mm Width)	Tape & Reel (TR)	Obsolete	Not Verified	Clock/Calendar/Supervisor	-	31B	HH:MM:SS (12/24 hr)	YY-MM-DD-dd	I2C, 2-Wire Serial	2.7V ~ 3.3V	-	-	-	Surface Mount	-	-	20-QSOP
M48T86PC1 IC RTC CLK/CALENDAR PAR 24-DIP STMicroelectronics	2,005	-	RFQ	Datasheet	-	24-DIP Module (0.600", 15.24mm)	Tube	Obsolete	Not Verified	Clock/Calendar	Alarm, Leap Year, NVSRAM, Square Wave Output	114B	HH:MM:SS (12/24 hr)	YY-MM-DD-dd	Parallel	4.5V ~ 5.5V	-	15mA @ 4.5V ~ 5.5V	0°C ~ 70°C	Through Hole	-	-	24-PCDIP, CAPHAT®
M41T56MH6F IC RTC CLK/CALENDAR I2C 28SOH STMicroelectronics	3,921	-	RFQ	Datasheet	-	28-SOP (0.350", 8.89mm Width) with SNAPHAT Sockets	Tape & Reel (TR)	Obsolete	Not Verified	Clock/Calendar	Leap Year, NVSRAM	56B	HH:MM:SS (24 hr)	YY-MM-DD-dd	I2C, 2-Wire Serial	4.5V ~ 5.5V	2.5V ~ 3.5V	100µA (Typ) @ 4.5V ~ 5.5V	-40°C ~ 85°C	Surface Mount	-	-	28-SOH
RTC-72423B0:PURE SN IC RTC CLK/CALENDAR PAR 24SOP EPSON	4,587	-	RFQ	Datasheet	RTC-72423	24-SOIC (0.311", 7.90mm Width)	Tape & Reel (TR)	Obsolete	Not Verified	Clock/Calendar	Leap Year	-	HH:MM:SS (12/24 hr)	YY-MM-DD-dd	Parallel	4.5V ~ 5.5V	-	5µA ~ 10µA @ 2V ~ 5V	-40°C ~ 85°C	Surface Mount	-	-	24-SOP
KR3225Y32768EAW30TAA IC RTC CLOCK/CALENDAR I2C SMD KYOCERA AVX	2,175	-	RFQ	Datasheet	-	8-SMD	Tape & Reel (TR)	Obsolete	Not Verified	Clock/Calendar	Alarm	-	HH:MM:SS	YY-MM-DD-dd	I2C, 2-Wire Serial	1.3V ~ 5.5V	-	2µA @ 3V	-40°C ~ 85°C	Surface Mount	-	-	SMD
BQ4802LYPWG4 IC RTC CLK/CALENDAR PAR 28TSSOP Texas Instruments	4,115	-	RFQ	Datasheet	-	28-TSSOP (0.173", 4.40mm Width)	Tube	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	2.7V ~ 3.6V	2.4V ~ 4V	1.5mA (Typ) @ 2.7 V ~ 3.6 V	0°C ~ 70°C	Surface Mount	-	-	28-TSSOP
DS1344D-3+ IC RTC CLK/CALENDAR SPI 14TDFN Analog Devices Inc./Maxim Integrated	1,048	-	RFQ	Datasheet	-	14-WFDFN Exposed Pad	Tube	Active	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	2.7V ~ 5.5V	1.3V ~ 5.5V	-	-40°C ~ 85°C	Surface Mount	-	-	14-TDFN (3x3)
ISL12022MIBZR5421 IC RTC CLK/CALENDAR I2C 20SOIC Renesas Electronics Corporation	3,899	-	RFQ	Datasheet	-	20-SOIC (0.295", 7.50mm Width)	Tube	Active	Not Verified	Clock/Calendar	Alarm, Daylight Savings, Leap Year, SRAM	128B	HH:MM:SS (12/24 hr)	YY-MM-DD-dd	I2C, 2-Wire Serial	2.7V ~ 5.5V	1.8V ~ 5.5V	14µA ~ 15µA @ 3V ~ 5V	-40°C ~ 85°C	Surface Mount	-	-	20-SOIC
RA-4574SA:B3 ROHS IC RTC CLK/CALENDAR SER 14SOP EPSON	3,348	-	RFQ	Datasheet	-	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	3-Wire Serial	1.6V ~ 5.5V	-	1µA ~ 2µA @ 3V ~ 5V	-40°C ~ 85°C	Surface Mount	Automotive	AEC-Q200	14-SOP
RTC-4701JE:B3 ROHS IC RTC CLK/CALENDAR SER 20VSOJ EPSON	4,047	-	RFQ	Datasheet	-	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	-	-	-40°C ~ 85°C	Surface Mount	-	-	20-VSOJ

WINSUN SOURCING SUPPORT

Need Real Time Clocks Sourcing Support?

Send the manufacturer, part number, quantity and target delivery requirement. Winsun (HK) Electronics can assist with availability checks, quotation support, shortage sourcing and hard-to-find or obsolete components.

Global component sourcing support BOM, shortage and EOL support

Send part number & quantity Request a Quote

Need sourcing assistance? Contact Sales

FREQUENTLY ASKED QUESTIONS

Real Time Clocks FAQ

Common questions about selecting, comparing and sourcing Real Time Clocks components through Winsun (HK) Electronics.

What should I check when selecting Real Time Clocks components?

Compare the manufacturer part number, electrical specifications, package, operating conditions and application requirements. The product datasheet should be used to confirm technical suitability.

Can Winsun help source specific Real Time Clocks part numbers?

Yes. Send the exact part number, manufacturer and required quantity. Winsun (HK) Electronics can assist with availability checks, quotation support and sourcing options based on your requirement.

Do you support shortage, obsolete or hard-to-find Real Time Clocks parts?

Yes. Our sourcing team can review shortage and obsolete-part requirements and help check available supply channels or possible alternatives when appropriate.

How do I request a quote for Real Time Clocks components?

Submit an RFQ with the part number, manufacturer, quantity and target delivery requirement. Our sales team will review your request and follow up with current sourcing information.