Real Time Clocks

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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
M41T60Q6F IC RTC CLK/CALENDAR I2C 16QFN STMicroelectronics	1,715	-	RFQ	Datasheet	-	16-VFQFN Exposed Pad	Tape & Reel (TR)	Obsolete	Not Verified	Clock/Calendar	Leap Year	-	HH:MM:SS (24 hr)	YY-MM-DD-dd	I2C, 2-Wire Serial	1.3V ~ 4.4V	-	0.7µA ~ 0.95µA @ 3.6V ~ 4.4V	-40°C ~ 85°C	Surface Mount	-	-	16-QFN (3x3)
DS1682S/T&R IC RTC ELAPSED CNT I2C 8SOIC Analog Devices Inc./Maxim Integrated	2,765	-	RFQ	Datasheet	-	8-SOIC (0.154", 3.90mm Width)	Tape & Reel (TR)	Obsolete	Not Verified	Elapsed Time Counter	Alarm, EEPROM	10B	Binary	Binary	I2C, 2-Wire Serial	2.5V ~ 5.5V	-	4µA ~ 15µA @ 3V ~ 5.5V	-40°C ~ 85°C	Surface Mount	-	-	8-SOIC
RX-8035SAAA0 PURE SN IC RTC TIME EVENT REC I2C 14SOP EPSON	3,680	-	RFQ	Datasheet	RX-8035SA	14-SOIC (0.197", 5.00mm Width)	Tape & Reel (TR)	Active	-	Clock/Calendar	Alarm	-	HH:MM:SS (12/24 hr)	YY-MM-DD-dd	I2C	2.4V ~ 5.5V	1V ~ 5.5V	2.5µA @ 3V	-40°C ~ 85°C	Surface Mount	-	-	14-SOP
AB0811-T3 IC RTC CLK/CALENDAR SPI 16QFN Abracon LLC	1,104	-	RFQ	Datasheet	-	16-VFQFN Exposed Pad	Tape & Reel (TR)	Obsolete	Not Verified	Clock/Calendar	Alarm, Leap Year, Trickle-Charger	-	HH:MM:SS:hh	YY-MM-DD-dd	SPI	1.7V ~ 3.6V	1.5V ~ 3.6V	0.17µA ~ 0.22µA @ 1.8V ~ 3V	-40°C ~ 85°C	Surface Mount	-	-	16-QFN (3x3)
AB0801-T3 IC RTC CLK/CALENDAR I2C 16QFN Abracon LLC	1,484	-	RFQ	Datasheet	-	16-VFQFN Exposed Pad	Tape & Reel (TR)	Obsolete	Not Verified	Clock/Calendar	Alarm, Leap Year, Trickle-Charger	-	HH:MM:SS:hh	YY-MM-DD-dd	I2C, 2-Wire Serial	1.7V ~ 3.6V	1.5V ~ 3.6V	0.17µA ~ 0.22µA @ 1.8V ~ 3V	-40°C ~ 85°C	Surface Mount	-	-	16-QFN (3x3)
RTC-4543SA:B3 ROHS IC RTC CLK/CALENDAR SER 14SOP EPSON	3,105	-	RFQ	Datasheet	RTC-4543SA	14-SOIC (0.197", 5.00mm Width)	Tape & Reel (TR)	Obsolete	Not Verified	Clock/Calendar	Leap Year	-	HH:MM:SS (24 hr)	YY-MM-DD-dd	3-Wire Serial	2.5V ~ 5.5V	-	1µA ~ 3µA @ 2V ~ 5V	-40°C ~ 85°C	Surface Mount	-	-	14-SOP
RV-8523-C3-32.768KHZ-10PPM-TA-QC IC RTC CLK/CALENDAR I2C 10SON Micro Crystal AG	2,074	-	RFQ	Datasheet	C3	10-VCDFN	Tape & Reel (TR)	Active	Not Verified	Clock/Calendar	Alarm, Battery Switch, Leap Year, Programmable Clock Output, Timer, Watchdog Timer	-	HH:MM:SS (12/24 hr)	YY-MM-DD-dd	I2C, 2-Wire Serial	1.2V ~ 5.5V	-	0.18µA @ 3V	-40°C ~ 85°C (TA)	Surface Mount	-	-	10-SON (3.7x2.5)
RX-8025SA:AA0:ROHS IC RTC CLK/CALENDAR I2C 14SOP EPSON	4,054	-	RFQ	Datasheet	RX-8025SA	14-SOIC (0.197", 5.00mm Width)	Tape & Reel (TR)	Obsolete	Not Verified	Clock/Calendar	Alarm, Leap Year	-	HH:MM:SS (12/24 hr)	YY-MM-DD-dd	I2C, 2-Wire Serial	1.7V ~ 5.5V	-	1.2µA ~ 1.8µA @ 3V ~ 5V	-40°C ~ 85°C	Surface Mount	-	-	14-SOP
M41T94MQ6E IC RTC CLK/CALENDAR SPI 16SO STMicroelectronics	1,051	-	RFQ	Datasheet	-	16-SOIC (0.154", 3.90mm Width)	Tube	Obsolete	Not Verified	Clock/Calendar	Alarm, Leap Year, NVRAM, Square Wave Output, Watchdog Timer	44B	HH:MM:SS:hh (24 hr)	YY-MM-DD-dd	SPI	2.7V ~ 5.5V	2.5V ~ 3.5V	1.4mA @ 2.7V ~ 5.5V	-40°C ~ 85°C	Surface Mount	-	-	16-SO
1337GDCGI IC RTC CLK/CALENDAR I2C 8SOIC Renesas Electronics Corporation	4,094	-	RFQ	Datasheet	-	8-SOIC (0.154", 3.90mm Width)	Tube	Obsolete	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
M41T64Q6F IC RTC CLK/CALENDAR I2C 16QFN STMicroelectronics	4,317	-	RFQ	Datasheet	Timekeeper®	16-VFQFN Exposed Pad	Tape & Reel (TR)	Obsolete	Not Verified	Clock/Calendar	Alarm, Leap Year, Square Wave Output, Watchdog Timer	-	HH:MM:SS:hh (24 hr)	YY-MM-DD-dd	I2C, 2-Wire Serial	1.3V ~ 4.4V	-	0.7µA ~ 0.95µA @ 1.3V ~ 4.4V	-40°C ~ 85°C	Surface Mount	-	-	16-QFN (3x3)
M41T66Q6F IC RTC CLK/CALENDAR I2C 16QFN STMicroelectronics	4,303	-	RFQ	Datasheet	Timekeeper®	16-VFQFN Exposed Pad	Tape & Reel (TR)	Obsolete	Not Verified	Clock/Calendar	Alarm, Leap Year, Square Wave Output, Watchdog Timer	-	HH:MM:SS:hh (24 hr)	YY-MM-DD-dd	I2C, 2-Wire Serial	1.5V ~ 4.4V	-	0.9µA ~ 1.1µA @ 1.5V ~ 4.4V	-40°C ~ 85°C	Surface Mount	-	-	16-QFN (3x3)
DS1306EN/T&R IC RTC CLK/CALENDAR SPI 20TSSOP Analog Devices Inc./Maxim Integrated	3,563	-	RFQ	Datasheet	-	20-TSSOP (0.173", 4.40mm Width)	Tape & Reel (TR)	Obsolete	Not Verified	Clock/Calendar	Alarm, Leap Year, NVSRAM, Square Wave Output, Trickle-Charger	96B	HH:MM:SS (12/24 hr)	YY-MM-DD-dd	SPI	2V ~ 5.5V	2V ~ 5.5V	25.3µA ~ 81µA @ 2V ~ 5V	-40°C ~ 85°C	Surface Mount	-	-	20-TSSOP
RV-3129-C3-32.768KHZ-OPTION-A-TA-QC-T3 TIMING REAL TIME CLOCK Micro Crystal AG	3,910	-	RFQ	Datasheet	C3	10-VCDFN	Bulk	Active	-	Clock/Calendar	Alarm, EEPROM, RAM, Trickle Charger	8B	HH:MM:SS	YY-MM-DD-dd	I2C, 2-Wire Serial	1.3V ~ 5.5V, 2.1V ~ 5.5V	-	1µA @ 3V	-40°C ~ 85°C (TA)	Surface Mount	-	-	10-SON (3.7x2.5)
PT7C4363BZEEX IC RTC CLK/CALENDAR I2C 8TDFN Diodes Incorporated	3,859	-	RFQ	Datasheet	-	8-WFDFN Exposed Pad	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	-	0.85µA ~ 0.9µA @ 3V ~ 5V	-40°C ~ 85°C (TA)	Surface Mount	-	-	8-TDFN (2x3)
RX6110SA:BB PURE SN IC RTC CLK/CALENDAR I2C 14SOP EPSON	2,564	-	RFQ	Datasheet	RX6110SA	14-SOIC (0.197", 5.00mm Width)	Tube	Active	Not Verified	Clock/Calendar	Alarm, SRAM	16B	-	-	I2C, SPI	1.6V ~ 5.5V	-	0.25µA @ 3V	-40°C ~ 85°C	Surface Mount	-	-	14-SOP
RV-1805-C3-32.768KHZ-2PPM-TA-QC IC RTC CLK/CALENDAR I2C 10SON Micro Crystal AG	4,246	-	RFQ	Datasheet	-	10-VCDFN	Tape & Reel (TR)	Not For New Designs	Not Verified	Clock/Calendar	Alarm, Programmable Clock Output, RAM, Timer, Trickle Charger, Watchdog Timer	256B	HH:MM:SS:hh (12/24 hr)	YY-MM-DD-dd	I2C, 2-Wire Serial	1.5V ~ 3.6V	-	0.08µA @ 3V	-40°C ~ 85°C (TA)	Surface Mount	-	-	10-SON (3.7x2.5)
RX8111CE BB IC RTC CLK/CALENDAR I2C 10SMD EPSON	4,538	-	RFQ	Datasheet	RX8111CE	10-SMD, No Lead	Bulk	Active	Not Verified	Clock/Calendar	Alarm, RAM	-	HH:MM:SS	YY-MM-DD	I2C	1.6V ~ 5.5V	-	3µA @ 3V	-40°C ~ 85°C (TA)	Surface Mount	-	-	10-SMD
RX-4045SA:AA0 IC RTC CLK/CALENDAR SPI 14SOP EPSON	4,952	-	RFQ	Datasheet	RX-4045SA	14-SOIC (0.197", 5.00mm Width)	Tape & Reel (TR)	Obsolete	Not Verified	Clock/Calendar	Alarm, Leap Year	-	HH:MM:SS (12/24 hr)	YY-MM-DD-dd	SPI	1.7V ~ 5.5V	-	1.2µA ~ 1.8µA @ 3V ~ 5V	-40°C ~ 85°C	Surface Mount	-	-	14-SOP
V3020XSO8B+ LINEAR IC EM Microelectronic	2,146	-	RFQ	Datasheet	-	8-SOIC (0.154", 3.90mm Width)	Tape & Reel (TR)	Last Time Buy	-	Clock/Calendar	Leap Year, RAM	1B	HH:MM:SS	YY-MM-DD-dd	3-Wire Serial	1.2V ~ 5.5V	-	0.49µA ~ 0.6µA @ 3V ~ 5V	-40°C ~ 125°C (TA)	Surface Mount	-	-	8-SOIC

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Real Time Clocks FAQ

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

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