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
RX4901CE XS D03 IC RTC CLK/CALENDAR SPI 10SMD EPSON	1,528	-	RFQ	Datasheet	-	-	Tape & Reel (TR)	Active	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-
RX4901CE XS B03 IC RTC CLK/CALENDAR SPI 10SMD EPSON	1,734	-	RFQ	Datasheet	-	-	Tape & Reel (TR)	Active	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-
RX4901CE XB D03 IC RTC CLK/CALENDAR SPI 10SMD EPSON	3,087	-	RFQ	Datasheet	-	-	Tape & Reel (TR)	Active	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-
RX8901CE XB B03 IC RTC CLK/CALENDAR I2C 10SMD EPSON	1,234	-	RFQ	Datasheet	-	-	Tape & Reel (TR)	Active	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-
DS1685SN-5+T&R IC RTC CLK/CALENDAR PAR 24SOIC Analog Devices Inc./Maxim Integrated	3,908	-	RFQ	Datasheet	-	24-SOIC (0.295", 7.50mm Width)	Tape & Reel (TR)	Active	Not Verified	Clock/Calendar	Alarm, NVSRAM, Square Wave Output, Y2K	242B	HH:MM:SS (12/24 hr)	YY-MM-DD-dd	Parallel	4.5V ~ 5.5V	2.5V ~ 3.7V	3mA @ 5V	-40°C ~ 85°C	Surface Mount	-	-	24-SOIC
RX-8035LCAA PURE SN IC RTC EVENT REC I2C 12VSOJ EPSON	2,838	-	RFQ	Datasheet	RX-8035LC	12-TFSOJ (0.094", 2.40mm Width)	Bulk	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	-	-	12-VSOJ
DS12887A IC RTC CLK/CALENDAR PAR 24EDIP Analog Devices Inc./Maxim Integrated	1,466	-	RFQ	Datasheet	-	24-DIP Module (0.600", 15.24mm)	Tube	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	0°C ~ 70°C	Through Hole	-	-	24-EDIP
DS12887 IC RTC CLK/CALENDAR PAR 24EDIP Analog Devices Inc./Maxim Integrated	1,816	-	RFQ	Datasheet	-	24-DIP Module (0.600", 15.24mm)	Tube	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	0°C ~ 70°C	Through Hole	-	-	24-EDIP
DS1501YEN IC RTC CLK/CALENDAR PAR 28TSOP Analog Devices Inc./Maxim Integrated	3,685	-	RFQ	Datasheet	-	28-TSSOP (0.465", 11.80mm Width)	Bag	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	-40°C ~ 85°C	Surface Mount	-	-	28-TSOP
DS1673E-5+T&R IC RTC SYST CTRLR SER 20TSSOP Analog Devices Inc./Maxim Integrated	3,978	-	RFQ	Datasheet	-	20-TSSOP (0.173", 4.40mm Width)	Tape & Reel (TR)	Active	Not Verified	Portable System Controller	Alarm, Leap Year, Watchdog Timer	-	HH:MM:SS (12/24 hr)	YY-MM-DD-dd	3-Wire Serial	4.5V ~ 5.5V	2.5V ~ 3.7V	300µA @ 5V	0°C ~ 70°C	Surface Mount	-	-	20-TSSOP
RX-4571NB:B3 PURE SN IC RTC CLK/CALENDAR SER 22SON EPSON	3,837	-	RFQ	Datasheet	RX-4571NB	22-LFDFN	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	-	-	22-SON (6.3x4.8)
RX-8571NB:B3PURESN IC RTC CLK/CALENDAR I2C 22SON EPSON	2,248	-	RFQ	Datasheet	RX-8571NB	22-LFDFN	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	-	-	22-SON (6.3x4.8)
DS1670E+T&R IC RTC SYST CTRLR SER 20TSSOP Analog Devices Inc./Maxim Integrated	2,730	-	RFQ	Datasheet	-	20-TSSOP (0.173", 4.40mm Width)	Tape & Reel (TR)	Active	Not Verified	Portable System Controller	Alarm, Leap Year, Watchdog Timer	-	HH:MM:SS (12/24 hr)	YY-MM-DD-dd	3-Wire Serial	2.97V ~ 3.63V	2.5V ~ 3.7V	100µA @ 3.3V	0°C ~ 70°C	Surface Mount	-	-	20-TSSOP
RX-4035SA:AA3 PURE SN IC RTC TIME EVENT REC SPI 14SOP EPSON	1,905	-	RFQ	Datasheet	RX-4035SA	14-SOIC (0.197", 5.00mm Width)	Tape & Reel (TR)	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
RX-4035SAAC3 PURE SN IC RTC CLK/CALENDAR SPI 14SOP EPSON	4,338	-	RFQ	Datasheet	RX-4035SA	14-SOIC (0.197", 5.00mm Width)	Tape & Reel (TR)	Active	Not Verified	Clock/Calendar	Alarm	-	-	-	SPI	2.4V ~ 5.5V	1V ~ 5.5V	2.5µA @ 3V	-40°C ~ 85°C	Surface Mount	-	-	14-SOP
DS17485SN-5 IC RTC CLK/CALENDAR PAR 24SOIC Analog Devices Inc./Maxim Integrated	2,976	-	RFQ	Datasheet	-	24-SOIC (0.295", 7.50mm Width)	Tube	Obsolete	Not Verified	Clock/Calendar	Alarm, Daylight Savings, Leap Year, NVSRAM, Square Wave Output	4KB	HH:MM:SS (12/24 hr)	YY-MM-DD-dd	Parallel	4.5V ~ 5.5V	2.5V ~ 3.7V	3mA @ 4.5V ~ 5.5V	-40°C ~ 85°C	Surface Mount	-	-	24-SOIC
DS12885Q+T&R IC RTC CLK/CALENDAR PAR 28PLCC Analog Devices Inc./Maxim Integrated	4,865	-	RFQ	Datasheet	-	28-LCC (J-Lead)	Tape & Reel (TR)	Active	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	0°C ~ 70°C	Surface Mount	-	-	28-PLCC (11.51x11.51)
M41T256YMH7E IC RTC CLK/CALENDAR I2C 44SOH STMicroelectronics	2,396	-	RFQ	Datasheet	Timekeeper®	44-BSOP (0.337", 8.56mm Width) requires SNAPHAT	Tube	Obsolete	Not Verified	Clock/Calendar	Leap Year, NVSRAM	32KB	HH:MM:SS:hh (24 hr)	YY-MM-DD-dd	I2C, 2-Wire Serial	4.5V ~ 5.5V	2.5V ~ 3.5V	2.5mA @ 4.5V ~ 5.5V	-25°C ~ 70°C	Surface Mount	-	-	44-SOH
DS1284Q IC RTC CLK/CALENDAR PAR 28PLCC Analog Devices Inc./Maxim Integrated	4,388	-	RFQ	Datasheet	-	28-LCC (J-Lead)	Tube	Obsolete	Not Verified	Clock/Calendar	Alarm, Leap Year, Square Wave Output, SRAM, Watchdog Timer	50B	HH:MM:SS:hh (12/24 hr)	YY-MM-DD-dd	Parallel	4.5V ~ 5.5V	2.4V ~ 3.5V	7mA @ 5V	0°C ~ 70°C	Surface Mount	-	-	28-PLCC (11.51x11.51)
RX-5412SF:B3 PURE SN IC RTC TIME EVENT REC SPI 24SOP EPSON	1,751	-	RFQ	Datasheet	-	24-SOP (0.213", 5.40mm Width)	Tape & Reel (TR)	Obsolete	Not Verified	Time Event Recorder	Alarm, Leap Year, SRAM, Watchdog Timer	-	HH:MM:SS (24 hr)	YY-MM-DD-dd	SPI	2.5V ~ 5.5V	1.4V ~ 5.5V	1µA @ 3V ~ 5V	-40°C ~ 85°C	Surface Mount	-	-	24-SSOP

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Real Time Clocks FAQ

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