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
M48T08-100PC1 IC RTC CLK/CALENDAR PAR 28DIP STMicroelectronics	1,999	-	RFQ	Datasheet	Timekeeper®	28-DIP Module (0.600", 15.24mm)	Tube	Active	Not Verified	Clock/Calendar	Leap Year, Watchdog Timer	-	HH:MM:SS (24 hr)	YY-MM-DD-dd	Parallel	4.75V ~ 5.5V	-	3mA @ 4.7V ~ 5.5V	0°C ~ 70°C	Through Hole	-	-	28-PCDIP, CAPHAT®
M48T35Y-70PC1 IC RTC CLK/CALENDAR PAR 28DIP STMicroelectronics	2,073	-	RFQ	Datasheet	Timekeeper®	28-DIP Module (0.600", 15.24mm)	Tube	Active	Not Verified	Clock/Calendar	Leap Year	-	HH:MM:SS (24 hr)	YY-MM-DD-dd	Parallel	4.5V ~ 5.5V	-	2mA @ 4.75V ~ 5.5V	0°C ~ 70°C	Through Hole	-	-	28-PCDIP, CAPHAT®
DP8570AV/NOPB IC RTC TIMER PERIPH PAR 28PLCC Texas Instruments	3,369	-	RFQ	Datasheet	-	28-LCC (J-Lead)	Tube	Active	Not Verified	Timer Clock Peripheral (TCP)	Alarm, Leap Year	44B	HH:MM:SS:hh (12/24 hr)	YY-MM-DD-dd	Parallel	4.5V ~ 5.5V	2.2V ~ 5.1V	1µA @ 5V	-40°C ~ 85°C	Surface Mount	-	-	28-PLCC (11.51x11.51)
DS1248Y-70IND+ IC RTC PHANTOM CHIP PAR 32EDIP Analog Devices Inc./Maxim Integrated	1,626	-	RFQ	Datasheet	-	32-DIP Module (0.600", 15.24mm)	Tube	Active	Not Verified	Phantom Time Chip	NVSRAM	128KB	HH:MM:SS:hh (12/24 hr)	YY-MM-DD-dd	Parallel	4.5V ~ 5.5V	-	10mA @ 5V	-40°C ~ 85°C	Through Hole	-	-	32-EDIP
R2061L01-E2 IC RTC CLK/CALENDAR SER 16QFN Nisshinbo Micro Devices Inc.	1,025	-	RFQ	Datasheet	-	16-XFQFN 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	2.34V ~ 5.5V	-	1µA @ 3V	-40°C ~ 85°C	Surface Mount	-	-	QFN023023-16
R2223T-E2-F IC RTC CLK/CALENDAR I2C 10TSSOP Nisshinbo Micro Devices Inc.	3,247	-	RFQ	Datasheet	-	10-VFSOP, 10-MSOP (0.110", 2.80mm Width)	Tape & Reel (TR)	Active	Not Verified	Clock/Calendar	Alarm, Leap Year, RAM	-	HH:MM:SS (12/24 hr)	YY-MM-DD-dd	I2C, 2-Wire Serial	1.5V ~ 5.5V	-	0.9µA @ 3V	-40°C ~ 85°C	Surface Mount	-	-	10-TSSOPG
DS1685EN-5+ IC RTC CLK/CALENDAR PAR 24TSSOP Analog Devices Inc./Maxim Integrated	4,160	-	RFQ	Datasheet	-	24-TSSOP (0.173", 4.40mm Width)	Tube	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-TSSOP
DS1672U-3+ IC RTC BINARY COUNTER I2C 8UMAX Analog Devices Inc./Maxim Integrated	3,044	-	RFQ	Datasheet	-	8-TSSOP, 8-MSOP (0.118", 3.00mm Width)	Tube	Active	Not Verified	Binary Counter	Trickle-Charger	-	Binary	Binary	I2C, 2-Wire Serial	2.7V ~ 3.3V	1.3V ~ 3.63V	500µA @ 3.3V	-40°C ~ 85°C	Surface Mount	-	-	8-uMAX/uSOP
M48T18-150PC1 IC RTC CLK/CALENDAR PAR 28DIP STMicroelectronics	2,059	-	RFQ	Datasheet	Timekeeper®	28-DIP Module (0.600", 15.24mm)	Tube	Active	Not Verified	Clock/Calendar	Leap Year, Watchdog Timer	-	HH:MM:SS (24 hr)	YY-MM-DD-dd	Parallel	4.5V ~ 5.5V	-	3mA @ 4.5V ~ 5.5V	0°C ~ 70°C	Through Hole	-	-	28-PCDIP, CAPHAT®
DS1315N-5+ IC RTC PHANTOM CHIP PAR 16DIP Analog Devices Inc./Maxim Integrated	4,818	-	RFQ	Datasheet	-	16-DIP (0.300", 7.62mm)	Tube	Active	Not Verified	Phantom Time Chip	Leap Year	-	HH:MM:SS:hh (12/24 hr)	YY-MM-DD-dd	Parallel	4.5V ~ 5.5V	2.5V ~ 3.7V	1.3mA @ 5V	-40°C ~ 85°C	Through Hole	-	-	16-PDIP
MAX31342EWA+T IC RTC CLK/CALENDAR I2C 8WLP Analog Devices Inc./Maxim Integrated	4,911	-	RFQ	Datasheet	-	8-WFBGA, WLBGA	Tape & Reel (TR)	Active	Not Verified	Clock/Calendar	Alarm, Leap Year, Square Wave Output	-	HH:MM:SS (12/24 hr)	YY-MM-DD-dd	I2C	1.6V ~ 3.6V	-	0.33µA @ 3V	-40°C ~ 85°C	Surface Mount	-	-	8-WLP (.97x1.97)
MAX31331TETB+ ULTRA-LOW POWER 12C REAL TIME CL Analog Devices Inc./Maxim Integrated	1,103	-	RFQ	Datasheet	-	10-WFDFN Exposed Pad	Tray	Active	-	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	-	-	10-TDFN (3x3)
MAX31329NELB+ INTEGRATED RC17 W/ NDK CRYSTAL Analog Devices Inc./Maxim Integrated	1,784	-	RFQ	Datasheet	-	10-LLGA	Tray	Active	-	Clock/Calendar	Alarm, Leap Year, RAM, Square Wave Output, Trickle Charger	64B	HH:MM:SS (12/24 hr)	YY-MM-DD-dd	I2C	1.6V ~ 5.5V	1.6V ~ 5.5V	0.5µA ~ 0.7µA @ 1.6V ~ 5.5V	-40°C ~ 85°C	Surface Mount	-	-	10-LGA (5x5)
MAX31328NELB+T INTEGRATED DS3231SN W/ NDK CRYST Analog Devices Inc./Maxim Integrated	4,608	-	RFQ	Datasheet	-	10-LLGA	Tape & Reel (TR)	Active	-	Clock/Calendar	Alarm, Leap Year, Square Wave Output, TCXO/Crystal	-	HH:MM:SS (12/24 hr)	YY-MM-DD-dd	I2C	2.3V ~ 5.5V	2.3V ~ 5.5V	3µA ~ 3.5µA @ 3V ~ 5.5V	-40°C ~ 85°C (TA)	Surface Mount	-	-	10-LGA (5x5)
DS1685Q-5+ IC RTC CLK/CALENDAR PAR 28PLCC Analog Devices Inc./Maxim Integrated	4,691	-	RFQ	Datasheet	-	28-LCC (J-Lead)	Tube	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	0°C ~ 70°C	Surface Mount	-	-	28-PLCC (11.51x11.51)
M48T08-150PC1 IC RTC CLK/CALENDAR PAR 28DIP STMicroelectronics	4,629	-	RFQ	Datasheet	Timekeeper®	28-DIP Module (0.600", 15.24mm)	Tube	Active	Not Verified	Clock/Calendar	Leap Year, Watchdog Timer	-	HH:MM:SS (24 hr)	YY-MM-DD-dd	Parallel	4.75V ~ 5.5V	-	3mA @ 4.7V ~ 5.5V	0°C ~ 70°C	Through Hole	-	-	28-PCDIP, CAPHAT®
PCF8564AU/5GB/1,01 IC RTC CLOCK/CALENDAR I2C DIE NXP USA Inc.	4,074	-	RFQ	Datasheet	-	Die	Bulk	Active	Not Verified	Clock/Calendar	Alarm, Leap Year, Square Wave Output, Watchdog Timer	-	HH:MM:SS (24 hr)	YY-MM-DD-dd	I2C, 2-Wire Serial	1V ~ 5.5V	-	0.6µA ~ 0.75µA @ 2V ~ 5V	-40°C ~ 85°C	Surface Mount	-	-	Die
PCF8564AU/5BB/1,01 IC RTC CLOCK/CALENDAR I2C DIE NXP USA Inc.	1,485	-	RFQ	Datasheet	-	Die	Bulk	Active	Not Verified	Clock/Calendar	Alarm, Leap Year, Square Wave Output, Watchdog Timer	-	HH:MM:SS (24 hr)	YY-MM-DD-dd	I2C, 2-Wire Serial	1V ~ 5.5V	-	0.6µA ~ 0.75µA @ 2V ~ 5V	-40°C ~ 85°C	Surface Mount	-	-	Die
PT7C4563BUEX IC RTC I2C SER 8MSOP T&R 2.5K Diodes Incorporated	2,201	-	RFQ	Datasheet	-	8-TSSOP, 8-MSOP (0.118", 3.00mm Width)	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	-	0.65µA ~ 0.85µA @ 3V ~ 5V	-40°C ~ 85°C (TA)	Surface Mount	-	-	8-MSOP
PCF2123U/12HA/1,00 IC RTC CLOCK/CALENDAR SPI DIE NXP USA Inc.	1,550	-	RFQ	Datasheet	-	Die	Bulk	Active	Not Verified	Clock/Calendar	Alarm, Leap Year, Square Wave Output, Watchdog Timer	-	HH:MM:SS (12/24 hr)	YY-MM-DD-dd	SPI	1.6V ~ 5.5V	-	0.33µA ~ 0.38µA @ 2V ~ 5V	-40°C ~ 85°C	-	-	-	Die

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