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
S-35390A-T8T1G IC RTC CLK/CALENDAR I2C 8TSSOP ABLIC Inc.	15,960	-	RFQ	Datasheet	-	8-TSSOP (0.173", 4.40mm Width)	Tape & Reel (TR)	Active	Not Verified	Clock/Calendar	Alarm, Leap Year	-	HH:MM:SS (12/24 hr)	YY-MM-DD-dd	I2C, 2-Wire Serial	1.3V ~ 5.5V	-	0.93µA ~ 1.1µA @ 3V ~ 5V	-40°C ~ 85°C	Surface Mount	-	-	8-TSSOP
RV-8263-C7-32.768KHZ-20PPM-TA-QC IC RTC CLK/CALENDAR I2C 8SON Micro Crystal AG	23,857	-	RFQ	Datasheet	C7	8-WCDFN	Tape & Reel (TR)	Active	Not Verified	Clock/Calendar	Alarm, Leap Year, Programmable Clock Output, RAM, Timer	1B	HH:MM:SS (12/24 hr)	YY-MM-DD-dd	I2C, 2-Wire Serial	0.9V ~ 5.5V	-	0.24µA @ 3V	-40°C ~ 85°C (TA)	Surface Mount	-	-	8-SON (3.2x1.5)
M41T0M6F IC RTC CLK/CALENDAR I2C 8SOIC STMicroelectronics	4,895	-	RFQ	Datasheet	-	8-SOIC (0.154", 3.90mm Width)	Tape & Reel (TR)	Active	Not Verified	Clock/Calendar	-	-	HH:MM:SS	YY-MM-DD-dd	I2C, 2-Wire Serial	2V ~ 5.5V	-	1.2µA ~ 31µA @ 3V ~ 5.5V	-40°C ~ 85°C	Surface Mount	-	-	8-SOIC
M41T81SM6F IC RTC CLK/CALENDAR I2C 8SOIC STMicroelectronics	9,089	-	RFQ	Datasheet	-	8-SOIC (0.154", 3.90mm Width)	Tape & Reel (TR)	Active	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	2.7V ~ 5.5V	2V ~ 3.5V	100µA @ 2.7V ~ 5.5V	-40°C ~ 85°C	Surface Mount	-	-	8-SOIC
M41T81M6F IC RTC CLK/CALENDAR I2C 8SOIC STMicroelectronics	10,812	-	RFQ	Datasheet	-	8-SOIC (0.154", 3.90mm Width)	Tape & Reel (TR)	Active	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	2V ~ 5.5V	2.5V ~ 3.5V	100µA @ 2V ~ 5.5V	-40°C ~ 85°C	Surface Mount	-	-	8-SOIC
AB0815-T3 IC RTC CLK/CALENDAR SPI 16QFN Abracon LLC	113,424	-	RFQ	Datasheet	-	16-VFQFN Exposed Pad	Tape & Reel (TR)	Active	Not Verified	Clock/Calendar	Alarm, Leap Year, SRAM, Trickle-Charger, Watchdog Timer	256B	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)
AB0805-T3 IC RTC CLK/CALENDAR I2C 16QFN Abracon LLC	3,531	-	RFQ	Datasheet	-	16-VFQFN Exposed Pad	Tape & Reel (TR)	Active	Not Verified	Clock/Calendar	Alarm, Leap Year, SRAM, Trickle-Charger, Watchdog Timer	256B	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)
AB1805-T3 IC RTC CLK/CALENDAR I2C 16QFN Abracon LLC	65,900	-	RFQ	Datasheet	-	16-VFQFN Exposed Pad	Tape & Reel (TR)	Active	Not Verified	Clock/Calendar	Alarm, Leap Year, SRAM, Trickle-Charger, Watchdog Timer	256B	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)
M41T82RM6F IC RTC CLK/CALENDAR I2C 8SOIC STMicroelectronics	3,840	-	RFQ	Datasheet	-	8-SOIC (0.154", 3.90mm Width)	Tape & Reel (TR)	Active	Not Verified	Clock/Calendar	Alarm, Leap Year, SRAM, Watchdog Timer	7B	HH:MM:SS:hh (24 hr)	YY-MM-DD-dd	I2C, 2-Wire Serial	2.7V ~ 5.5V	2V ~ 5.5V	10µA @ 5.5V	-40°C ~ 85°C	Surface Mount	-	-	8-SOIC
M41T56M6F IC RTC CLK/CALENDAR I2C 8SOIC STMicroelectronics	8,886	-	RFQ	Datasheet	-	8-SOIC (0.154", 3.90mm Width)	Tape & Reel (TR)	Active	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	-	-	8-SOIC
M41T82ZM6F IC RTC CLK/CALENDAR I2C 8SOIC STMicroelectronics	4,737	-	RFQ	Datasheet	-	8-SOIC (0.154", 3.90mm Width)	Tape & Reel (TR)	Active	Not Verified	Clock/Calendar	Alarm, Leap Year, SRAM, Watchdog Timer	7B	HH:MM:SS:hh (24 hr)	YY-MM-DD-dd	I2C, 2-Wire Serial	2.38V ~ 5.5V	2V ~ 5.5V	10µA @ 5.5V	-40°C ~ 85°C	Surface Mount	-	-	8-SOIC
M41T82SM6F IC RTC CLK/CALENDAR I2C 8SOIC STMicroelectronics	4,424	-	RFQ	Datasheet	-	8-SOIC (0.154", 3.90mm Width)	Tape & Reel (TR)	Active	Not Verified	Clock/Calendar	Alarm, Leap Year, SRAM, Watchdog Timer	7B	HH:MM:SS:hh (24 hr)	YY-MM-DD-dd	I2C, 2-Wire Serial	3V ~ 5.5V	2V ~ 5.5V	10µA @ 5.5V	-40°C ~ 85°C	Surface Mount	-	-	8-SOIC
M41T00SM6F IC RTC CLK/CALENDAR I2C 8SOIC STMicroelectronics	3,398	-	RFQ	Datasheet	-	8-SOIC (0.154", 3.90mm Width)	Tape & Reel (TR)	Active	Not Verified	Clock/Calendar	Leap Year	-	HH:MM:SS (24 hr)	YY-MM-DD-dd	I2C, 2-Wire Serial	2.7V ~ 5.5V	2V ~ 3.5V	70µA @ 2.7V ~ 5.5V	-40°C ~ 85°C	Surface Mount	-	-	8-SOIC
RV-4162-C7-32.768KHZ-20PPM-TA-QC IC RTC CLK/CALENDAR I2C 8SON Micro Crystal AG	16,890	-	RFQ	Datasheet	C7	8-WCDFN	Tape & Reel (TR)	Active	Not Verified	Clock/Calendar	Alarm, Leap Year, Programmable Clock Output, Watchdog Timer	-	HH:MM:SS:hh (24 hr)	YY-MM-DD-dd	I2C, 2-Wire Serial	1V ~ 4.4V	-	0.5µA @ 3V	-40°C ~ 85°C (TA)	Surface Mount	-	-	8-SON (3.2x1.5)
M41T00M6F IC RTC CLK/CALENDAR I2C 8SOIC STMicroelectronics	16,304	-	RFQ	Datasheet	-	8-SOIC (0.154", 3.90mm Width)	Tape & Reel (TR)	Active	Not Verified	Clock/Calendar	Leap Year	-	HH:MM:SS	YY-MM-DD-dd	I2C, 2-Wire Serial	2V ~ 5.5V	2.5V ~ 3.5V	70µA @ 2V ~ 5.5V	-40°C ~ 85°C	Surface Mount	-	-	8-SOIC
PCF8593T/1,118 IC RTC CLOCK/CALENDAR I2C 8SO NXP USA Inc.	2,005	-	RFQ	Datasheet	-	8-SOIC (0.154", 3.90mm Width)	Tape & Reel (TR)	Active	Not Verified	Clock/Calendar	Alarm, NVSRAM	8B	HH:MM:SS:hh (12/24 hr)	YY-MM-DD-dd	I2C, 2-Wire Serial	2.5V ~ 6V	-	8µA ~ 15µA @ 2V ~ 5V	-40°C ~ 85°C	Surface Mount	-	-	8-SO
MAX31331EWC+T IC RTC CLK/CALENDAR I2C 12WLP Analog Devices Inc./Maxim Integrated	4,044	-	RFQ	Datasheet	-	12-WFBGA, WLBGA	Tape & Reel (TR)	Active	Not Verified	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	-	-	12-WLP (1.63x1.23)
M41T11M6F IC RTC CLK/CALENDAR I2C 8SOIC STMicroelectronics	6,676	-	RFQ	Datasheet	-	8-SOIC (0.154", 3.90mm Width)	Tape & Reel (TR)	Active	Not Verified	Clock/Calendar	Leap Year, NVSRAM	56B	HH:MM:SS	YY-MM-DD-dd	I2C, 2-Wire Serial	2V ~ 5.5V	2.5V ~ 3.5V	70µA @ 2V ~ 5.5V	-40°C ~ 85°C	Surface Mount	-	-	8-SOIC
M41T83RQA6F IC RTC CLK/CALENDAR I2C 16QFN STMicroelectronics	4,217	-	RFQ	Datasheet	-	16-VQFN Exposed Pad	Tape & Reel (TR)	Active	Not Verified	Clock/Calendar	Alarm, Leap Year, Square Wave Output, SRAM, Watchdog Timer	7B	HH:MM:SS:hh (24 hr)	YY-MM-DD-dd	I2C, 2-Wire Serial	2.7V ~ 5.5V	2V ~ 5.5V	10µA @ 5.5V	-40°C ~ 85°C	Surface Mount	-	-	16-QFN (4x4)
M41T83SQA6F IC RTC CLK/CALENDAR I2C 16QFN STMicroelectronics	1,849	-	RFQ	Datasheet	-	16-VQFN Exposed Pad	Tape & Reel (TR)	Active	Not Verified	Clock/Calendar	Alarm, Leap Year, Square Wave Output, SRAM, Watchdog Timer	7B	HH:MM:SS:hh (24 hr)	YY-MM-DD-dd	I2C, 2-Wire Serial	3V ~ 5.5V	2V ~ 5.5V	10µA @ 5.5V	-40°C ~ 85°C	Surface Mount	-	-	16-QFN (4x4)

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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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