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
ISL12028IB27Z-T IC RTC CLK/CALENDAR I2C 14SOIC Intersil	1,307	-	RFQ	Datasheet	-	14-SOIC (0.154", 3.90mm Width)	Bulk	Obsolete	Not Verified	Clock/Calendar	Alarm, Leap Year, Supervisor, Watchdog Timer	-	HH:MM:SS (12/24 hr)	YY-MM-DD-dd	I2C, 2-Wire Serial	2.7V ~ 5.5V	1.8V ~ 5.5V	10µA ~ 20µA @ 2.7V ~ 5.5V	-40°C ~ 85°C	Surface Mount	-	-	14-SOIC
DS1685E-5 IC RTC CLK/CALENDAR PAR 24TSSOP Analog Devices Inc./Maxim Integrated	4,127	-	RFQ	Datasheet	-	24-TSSOP (0.173", 4.40mm Width)	Tube	Obsolete	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	-	-	24-TSSOP
X1228S14I-4.5A IC RTC CLK/CALENDAR I2C 14SOIC Intersil	4,990	-	RFQ	Datasheet	-	14-SOIC (0.154", 3.90mm Width)	Tube	Obsolete	Not Verified	Clock/Calendar	Alarm, Leap Year, Supervisor, Watchdog Timer	-	HH:MM:SS (12/24 hr)	YY-MM-DD-dd	I2C, 2-Wire Serial	2.7V ~ 5.5V	1.8V ~ 5.5V	10µA ~ 20µA @ 2.7V ~ 5V	-40°C ~ 85°C	Surface Mount	-	-	14-SOIC
DS17285-5 IC RTC CLK/CALENDAR PAR 24DIP Analog Devices Inc./Maxim Integrated	2,252	-	RFQ	Datasheet	-	24-DIP (0.600", 15.24mm)	Tube	Obsolete	Not Verified	Clock/Calendar	Alarm, Daylight Savings, Leap Year, NVSRAM, Square Wave Output	2KB	HH:MM:SS (12/24 hr)	YY-MM-DD-dd	Parallel	4.5V ~ 5.5V	2.5V ~ 3.7V	3mA @ 4.5V ~ 5.5V	0°C ~ 70°C	Through Hole	-	-	24-PDIP
DS17285E-3+ IC RTC CLK/CALENDAR PAR 28-TSOP Analog Devices Inc./Maxim Integrated	4,192	-	RFQ	Datasheet	*	-	Tray	Obsolete	Not Verified	-	-	-	-	-	-	-	-	-	-	-	-	-	-
CDP6818DX IC RTC CLK/CALENDAR 24CERDIP Harris Corporation	3,598	-	RFQ	Datasheet	-	24-CDIP (0.300", 7.62mm)	Bulk	Active	Not Verified	Clock/Calendar	Alarm, Leap Year, Square Wave Output	50B	HH:MM:SS (12/24 hr)	YY-MM-DD-dd	-	3V ~ 6V	-	50µA ~ 3mA @ 3V ~ 5V	0°C ~ 70°C (TA)	Through Hole	-	-	24-CERDIP
DS1315-33 IC RTC PHANTOM CHIP PAR 16DIP Analog Devices Inc./Maxim Integrated	1,876	-	RFQ	Datasheet	-	16-DIP (0.300", 7.62mm)	Tube	Obsolete	Not Verified	Phantom Time Chip	Leap Year	-	HH:MM:SS:hh (12/24 hr)	YY-MM-DD-dd	Parallel	3V ~ 3.6V	2.5V ~ 3.7V	1.1mA @ 3.3V	0°C ~ 70°C	Through Hole	-	-	16-PDIP
DS12885TN+ IC RTC CLK/CALENDAR PAR 32TQFP Analog Devices Inc./Maxim Integrated	1,626	-	RFQ	Datasheet	-	32-TQFP	Tape & Reel (TR)	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	-40°C ~ 85°C	Surface Mount	-	-	32-TQFP (7x7)
V3022SO28A+ IC RTC CLOCK/CALENDAR 28SOIC EM Microelectronic	2,115	-	RFQ	Datasheet	-	28-SOIC (0.295", 7.50mm Width)	Tube	Last Time Buy	Not Verified	Clock/Calendar	Alarm, Leap Year, RAM	8B	HH:MM:SS:hh (12/24 hr)	YY-MM-DD-dd	-	2V ~ 5.5V	-	15µA @ 3V	-40°C ~ 85°C (TA)	Surface Mount	-	-	28-SOIC
DS17885-3+ IC RTC CLK/CALENDAR PAR 24DIP Analog Devices Inc./Maxim Integrated	1,503	-	RFQ	Datasheet	-	24-DIP (0.600", 15.24mm)	Tube	Obsolete	Not Verified	Clock/Calendar	Alarm, Daylight Savings, Leap Year, NVSRAM, Square Wave Output	8KB	HH:MM:SS (12/24 hr)	YY-MM-DD-dd	Parallel	2.7V ~ 3.7V	2.5V ~ 3.7V	2mA @ 2.7V ~ 3.7V	0°C ~ 70°C	Through Hole	-	-	24-PDIP
CDP6818D IC RTC CLK/CALENDAR 24CERDIP Harris Corporation	3,799	-	RFQ	Datasheet	-	24-CDIP (0.300", 7.62mm)	Bulk	Active	Not Verified	Clock/Calendar	Alarm, Leap Year, Square Wave Output	50B	HH:MM:SS (12/24 hr)	YY-MM-DD-dd	-	3V ~ 6V	-	50µA ~ 3mA @ 3V ~ 5V	0°C ~ 70°C (TA)	Through Hole	-	-	24-CERDIP
BQ4802YDW IC RTC CLK/CALENDAR PAR 28SOIC Benchmarq	3,124	-	RFQ	Datasheet	-	28-SOIC (0.295", 7.50mm Width)	Bulk	Active	Not Verified	Clock/Calendar	Alarm, Daylight Savings, Leap Year, Supervisor, Watchdog Timer	-	HH:MM:SS (12/24 hr)	YY-MM-DD-dd	Parallel	4.5V ~ 5.5V	2.4V ~ 4V	1.5mA (Typ) @ 4.5 V ~ 5.5 V	0°C ~ 70°C	Surface Mount	-	-	28-SOIC
DS1553W-150 IC RTC CLK/CALENDAR PAR 28EDIP Analog Devices Inc./Maxim Integrated	1,637	-	RFQ	Datasheet	-	28-DIP Module (0.600", 15.24mm)	Tube	Obsolete	Not Verified	Clock/Calendar	Alarm, Leap Year, NVSRAM, Watchdog Timer, Y2K	8KB	HH:MM:SS (24 hr)	YY-MM-DD-dd	Parallel	2.97V ~ 3.63V	3V	2mA @ 3.3V	0°C ~ 70°C	Through Hole	-	-	28-EDIP
DS1554W-120+ IC RTC CLK/CALENDAR PAR 32-EDIP Analog Devices Inc./Maxim Integrated	2,675	-	RFQ	Datasheet	-	32-DIP Module (0.600", 15.24mm)	Bulk	Obsolete	Not Verified	Clock/Calendar	Alarm, Leap Year, NVSRAM, Watchdog Timer, Y2K	32KB	HH:MM:SS (24 hr)	YY-MM-DD-dd	Parallel	2.97V ~ 3.63V	-	4mA @ 3.3V	0°C ~ 70°C	Through Hole	-	-	32-EDIP
DS1244WP-120IND+ IC RTC PHANTOM CHIP PAR 34PCM Analog Devices Inc./Maxim Integrated	3,466	-	RFQ	Datasheet	-	34-PowerCap™ Module	Bulk	Obsolete	Not Verified	Phantom Time Chip	Leap Year, NVSRAM	32KB	HH:MM:SS:hh (12/24 hr)	YY-MM-DD-dd	Parallel	2.97V ~ 3.63V	3V	7mA @ 3.3V	-40°C ~ 85°C	Surface Mount	-	-	34-PowerCap Module
DS1556W-120 IC RTC CLK/CALENDAR PAR 32EDIP Analog Devices Inc./Maxim Integrated	4,306	-	RFQ	Datasheet	-	32-DIP Module (0.600", 15.24mm)	Tube	Obsolete	Not Verified	Clock/Calendar	Alarm, Leap Year, NVSRAM, Watchdog Timer, Y2K	128KB	HH:MM:SS (24 hr)	YY-MM-DD-dd	Parallel	2.97V ~ 3.63V	-	4mA @ 3.3V	0°C ~ 70°C	Through Hole	-	-	32-EDIP
DP8570AV IC RTC TIMER PERIPH PAR 28PLCC National Semiconductor	3,118	-	RFQ	Datasheet	-	28-LCC (J-Lead)	Bulk	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)
DS1251W-120+ IC RTC PHANTOM PAR 32-DIP Analog Devices Inc./Maxim Integrated	4,841	-	RFQ	Datasheet	-	32-DIP Module (0.600", 15.24mm)	Bulk	Obsolete	Not Verified	Phantom Time Chip	Leap Year, NVSRAM	512KB	HH:MM:SS:hh (12/24 hr)	YY-MM-DD-dd	Parallel	2.97V ~ 3.63V	-	7mA @ 3.3V	0°C ~ 70°C	Through Hole	-	-	32-EDIP
DS1315SN-33+ IC RTC PHANTOM CHIP PAR 16SOIC Analog Devices Inc./Maxim Integrated	4,972	-	RFQ	Datasheet	-	16-SOIC (0.295", 7.50mm Width)	Tube	Active	Not Verified	Phantom Time Chip	Leap Year	-	HH:MM:SS:hh (12/24 hr)	YY-MM-DD-dd	Parallel	3V ~ 3.6V	2.5V ~ 3.7V	1.1mA @ 3.3V	-40°C ~ 85°C	Surface Mount	-	-	16-SOIC
DS1315EN-33+ IC RTC PHANTOM CHIP PAR 20TSSOP Analog Devices Inc./Maxim Integrated	1,867	-	RFQ	Datasheet	-	20-TSSOP (0.173", 4.40mm Width)	Tube	Active	Not Verified	Phantom Time Chip	Leap Year	-	HH:MM:SS:hh (12/24 hr)	YY-MM-DD-dd	Parallel	3V ~ 3.6V	2.5V ~ 3.7V	1.1mA @ 3.3V	-40°C ~ 85°C	Surface Mount	-	-	20-TSSOP

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