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
ISL12008IB8Z IC RTC CLK/CALENDAR I2C 8SOIC Renesas Electronics Corporation	3,483	-	RFQ	Datasheet	-	8-SOIC (0.154", 3.90mm Width)	Tube	Active	Not Verified	Clock/Calendar	Alarm, Leap Year	-	HH:MM:SS:hh (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	-	-	8-SOIC
RX-8571LCB0 PURE SN IC RTC CLK/CALENDAR I2C 12VSOJ EPSON	355	-	RFQ	Datasheet	RX-8571LC	12-TFSOJ (0.094", 2.40mm Width)	Tape & Reel (TR)	Active	Not Verified	Clock/Calendar	Alarm, Leap Year, RAM	16B	HH:MM:SS (24 hr)	YY-MM-DD-dd	I2C, 2-Wire Serial	1.6V ~ 5.5V	-	0.55µA ~ 0.6µA @ 3V ~ 5V	-40°C ~ 85°C	Surface Mount	-	-	12-VSOJ
1338-31DCGI8 IC RTC CLK/CALENDAR I2C 8SOIC Renesas Electronics Corporation	1,817	-	RFQ	Datasheet	-	8-SOIC (0.154", 3.90mm Width)	Tape & Reel (TR)	Active	Not Verified	Clock/Calendar	Leap Year, NVSRAM, Square Wave Output	56B	HH:MM:SS (12/24 hr)	YY-MM-DD-dd	I2C, 2-Wire Serial	3.3V ~ 5.5V	1.3V ~ 3.7V	5µA @ 3.63V ~ 5.5V	-40°C ~ 85°C	Surface Mount	-	-	8-SOIC
M41T83ZQA6F IC RTC CLK/CALENDAR I2C 16QFN STMicroelectronics	1,000	-	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	2.38V ~ 5.5V	2V ~ 5.5V	10µA @ 5.5V	-40°C ~ 85°C	Surface Mount	-	-	16-QFN (4x4)
RX8804CE XB0 IC RTC CLK/CALENDAR I2C 10SMD EPSON	1,916	-	RFQ	Datasheet	RX8804CE	10-SMD, No Lead	Tape & Reel (TR)	Active	Not Verified	Clock/Calendar	Alarm	-	HH:MM:SS	YY-MM-DD	I2C	1.6V ~ 5.5V	-	1.5µA ~ 1.6µA @ 3V ~ 5V	-40°C ~ 105°C	Surface Mount	-	-	10-SMD
1339-31DCGI IC RTC CLK/CALENDAR I2C 8SOIC Renesas Electronics Corporation	218	-	RFQ	Datasheet	-	8-SOIC (0.154", 3.90mm Width)	Tube	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	3.3V ~ 5.5V	1.3V ~ 3.7V	200µA @ 3.63V ~ 5.5V	-40°C ~ 85°C	Surface Mount	-	-	8-SOIC
M41T93SQA6F IC RTC CLK/CALENDAR SPI 16QFN STMicroelectronics	618	-	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	SPI	3V ~ 5.5V	1.8V ~ 5.5V	10µA @ 5.5V	-40°C ~ 85°C	Surface Mount	-	-	16-QFN (4x4)
M41T93ZQA6F IC RTC CLK/CALENDAR SPI 16QFN STMicroelectronics	7,717	-	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	SPI	2.38V ~ 5.5V	1.8V ~ 5.5V	10µA @ 5.5V	-40°C ~ 85°C	Surface Mount	-	-	16-QFN (4x4)
R2045S-E2-FE IC RTC CLK/CALENDAR 4 WIRE 8HSOP Nisshinbo Micro Devices Inc.	8,866	-	RFQ	Datasheet	-	8-SOIC (0.173", 4.40mm Width) Exposed Pad	Tape & Reel (TR)	Active	Not Verified	Clock/Calendar	Alarm, Leap Year	-	HH:MM:SS (12/24 hr)	YY-MM-DD-dd	3-Wire Serial, 4-Wire Serial	1.7V ~ 5.5V	-	1.8µA ~ 2µA @ 3V ~ 5V	-40°C ~ 85°C	Surface Mount	-	-	8-HSOP-E
RX-8571SA:B0 PURE SN IC RTC CLK/CALENDAR I2C 14SOP EPSON	605	-	RFQ	Datasheet	RX-8571SA	14-SOIC (0.197", 5.00mm Width)	Tape & Reel (TR)	Active	Not Verified	Clock/Calendar	Alarm, Leap Year, RAM	16B	HH:MM:SS (24 hr)	YY-MM-DD-dd	I2C, 2-Wire Serial	1.6V ~ 5.5V	-	0.55µA ~ 0.6µA @ 3V ~ 5V	-40°C ~ 85°C	Surface Mount	-	-	14-SOP
RX-4571SA:B3 PURE SN IC RTC CLK/CALENDAR SER 14SOP EPSON	535	-	RFQ	Datasheet	RX-4571SA	14-SOIC (0.197", 5.00mm Width)	Tape & Reel (TR)	Active	Not Verified	Clock/Calendar	Alarm, Leap Year	-	HH:MM:SS (24 hr)	YY-MM-DD-dd	3-Wire Serial	1.6V ~ 5.5V	-	0.95µA ~ 1µA @ 3V ~ 5V	-40°C ~ 85°C	Surface Mount	-	-	14-SOP
M41T93ZMY6F IC RTC CLK/CALENDAR SPI 18SOX STMicroelectronics	5,468	-	RFQ	Datasheet	-	18-SOX, 18-SOIC with Crystal (7.5mm Width)	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	SPI	2.38V ~ 5.5V	1.8V ~ 5.5V	10µA @ 5.5V	-40°C ~ 85°C	Surface Mount	-	-	18-SOX
M41T93SMY6F IC RTC CLK/CALENDAR SPI 18SOX STMicroelectronics	3,776	-	RFQ	Datasheet	-	18-SOX, 18-SOIC with Crystal (7.5mm Width)	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	SPI	3V ~ 5.5V	1.8V ~ 5.5V	10µA @ 5.5V	-40°C ~ 85°C	Surface Mount	-	-	18-SOX
RX8900SA:UA0 PURE SN IC RTC CLK/CALENDAR I2C 14SOP EPSON	1,630	-	RFQ	Datasheet	RX8900SA	14-SOIC (0.197", 5.00mm Width)	Tape & Reel (TR)	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
ECS-RTC-3225-5609-TR IC RTC CLK/CALENDAR I2C 10SMD ECS Inc.	4,506	-	RFQ	Datasheet	-	10-SMD, No Lead	Tape & Reel (TR)	Active	Not Verified	Clock/Calendar	-	-	HH:MM:SS	YY-MM-DD	I2C	1.6V ~ 5V, 2.5V ~ 5V	1.6V ~ 5V	3µA @ 5V	-40°C ~ 85°C	Surface Mount	-	-	10-SMD
M41T81SMY6F IC RTC CLK/CALENDAR I2C 18SOX STMicroelectronics	3,896	-	RFQ	Datasheet	-	18-SOX, 18-SOIC with Crystal (7.5mm 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	-	-	18-SOX
RX4901CE XB C06 IC RTC CLK/CALENDAR SPI 10SMD EPSON	6,400	-	RFQ	Datasheet	RX4901CE	10-SMD, No Lead	Tape & Reel (TR)	Active	Not Verified	Clock/Calendar	Alarm	-	HH:MM:SS	YY-MM-DD	SPI, 4-Wire Serial	1.6V ~ 5.5V	-	1.5µA @ 3V	-40°C ~ 105°C (TA)	Surface Mount	-	-	10-SMD
RX8901CE XB B06 IC RTC CLK/CALENDAR I2C 10SMD EPSON	665	-	RFQ	Datasheet	RX8901CE	10-SMD, No Lead	Tape & Reel (TR)	Active	Not Verified	Clock/Calendar	Alarm	-	HH:MM:SS	YY-MM-DD	I2C	1.6V ~ 5.5V	-	1.5µA @ 3V	-40°C ~ 105°C (TA)	Surface Mount	-	-	10-SMD
DS1341U+ IC RTC CLOCK/CALENDAR I2C 8UMAX Analog Devices Inc./Maxim Integrated	595	-	RFQ	Datasheet	-	8-TSSOP, 8-MSOP (0.118", 3.00mm Width)	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-uMAX/uSOP
RX-8803SA:UB3 PURE SN IC RTC CLK/CALENDAR I2C 14SOP EPSON	236	-	RFQ	Datasheet	RX-8803LC	14-SOIC (0.197", 5.00mm Width)	Tape & Reel (TR)	Active	Not Verified	Clock/Calendar	Alarm	-	-	YY-MM-DD	I2C, 2-Wire Serial	1.6V ~ 5.5V	-	2.1µA ~ 3.4µA @ 3V ~ 5V	-40°C ~ 85°C	Surface Mount	-	-	14-SOP

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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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