Clock/Timing - Real Time Clocks

Category Introduction

Real Time Clocks (RTCs) provide time and/or date information in almost any electronic device which needs to keep accurate time. The clock types are binary counter, clock/calendar/supervisor, elapsed time counter, phantom time chip, portable system controller, temperature recorder, time event recorder, and timer clock peripheral. They contain memory sizes ranging from 2 B to 2 MB and have interface options of I2C, Parallel, Serial, SPI, 1-Wire, 2-Wire, 3-Wire, and 4-Wire.

Product List

2231 Items

PDF	Mfr Part #	Quantity Available	UnitPrice	RFQ	Series	Packaging	Product Status	Type	Features	Memory Size	Time Format	Date Format	Interface	Voltage - Supply	Voltage - Supply, Battery	Current - Timekeeping (Max)	Operating Temperature	Mounting Type	Package / Case	Supplier Device Package
	BQ4847MT IC RTC CLK/CALENDAR PAR 28-DIP Texas Instruments	601	$0.00			Tube	Obsolete	Clock/Calendar	Alarm, Daylight Savings, Leap Year, Supervisor, Watchdog Timer	-	HH:MM:SS (12/24 hr)	YY-MM-DD-dd	Parallel	4.75V ~ 5.25V	2.3V ~ 4V	-	0°C ~ 70°C	Through Hole	28-DIP Module (0.61", 15.49mm)	28-DIP Module
	BQ4847YMT IC RTC CLK/CALENDAR PAR 28-DIP Texas Instruments	60	$0.00			Tube	Obsolete	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	2.3V ~ 4V	-	0°C ~ 70°C	Through Hole	28-DIP Module (0.61", 15.49mm)	28-DIP Module
	BQ4850YMA-85 IC RTC CLK/CALENDAR PAR 32-DIP Texas Instruments	437	$0.00			Tube	Obsolete	Clock/Calendar	Alarm	-	HH:MM:SS (24 hr)	YY-MM-DD-dd	Parallel	4.5V ~ 5.5V	-	1mA @ 4.5V ~ 5.5V	0°C ~ 70°C	Through Hole	32-DIP Module (0.610", 15.49mm)	32-DIP Module (18.42x42.8)
	BQ4852YMC-85 IC RTC CLK/CALENDAR PAR 36-DIP Texas Instruments	18	$44.44			Tube	Obsolete	Clock/Calendar	Alarm, Supervisor, Watchdog Timer	-	HH:MM:SS:hh (24 hr)	YY-MM-DD-dd	Parallel	4.5V ~ 5.5V	-	1mA @ 4.5V ~ 5.5V	0°C ~ 70°C	Through Hole	36-DIP Module (0.610", 15.49mm)	36-DIP Module
	X1226S8 IC RTC CLK/CALENDAR I2C 8-SOIC Renesas Electronics America Inc	195	$0.00			Tube	Obsolete	Clock/Calendar	Alarm, Leap Year	-	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	0°C ~ 70°C	Surface Mount	8-SOIC (0.154", 3.90mm Width)	8-SOIC
	X1227S8 IC RTC CLK/CALENDAR I2C 8-SOIC Renesas Electronics America Inc	556	$0.00			Tube	Obsolete	Clock/Calendar	Alarm, Leap Year, Supervisor, Watchdog Timer	-	HH:MM:SS (12/24 hr)	YY-MM-DD-dd	I²C, 2-Wire Serial	4.5V ~ 5.5V	1.8V ~ 5.5V	10µA ~ 20µA @ 2.7V ~ 5V	0°C ~ 70°C	Surface Mount	8-SOIC (0.154", 3.90mm Width)	8-SOIC
	X1227S8-2.7A IC RTC CLK/CALENDAR I2C 8-SOIC Renesas Electronics America Inc	330	$0.00			Tube	Obsolete	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	0°C ~ 70°C	Surface Mount	8-SOIC (0.154", 3.90mm Width)	8-SOIC
	X1227S8-4.5A IC RTC CLK/CALENDAR I2C 8-SOIC Renesas Electronics America Inc	580	$0.00			Tube	Obsolete	Clock/Calendar	Alarm, Leap Year, Supervisor, Watchdog Timer	-	HH:MM:SS (12/24 hr)	YY-MM-DD-dd	I²C, 2-Wire Serial	4.5V ~ 5.5V	1.8V ~ 5.5V	10µA ~ 20µA @ 2.7V ~ 5V	0°C ~ 70°C	Surface Mount	8-SOIC (0.154", 3.90mm Width)	8-SOIC
	X1228S14 IC RTC CLK/CALENDAR I2C 14-SOIC Renesas Electronics America Inc	168	$0.00			Tube	Obsolete	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	0°C ~ 70°C	Surface Mount	14-SOIC (0.154", 3.90mm Width)	14-SOIC
	X1228S14-2.7 IC RTC CLK/CALENDAR I2C 14-SOIC Renesas Electronics America Inc	291	$0.00			Tube	Obsolete	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	0°C ~ 70°C	Surface Mount	14-SOIC (0.154", 3.90mm Width)	14-SOIC
	X1228S14-2.7A IC RTC CLK/CALENDAR I2C 14-SOIC Renesas Electronics America Inc	324	$0.00			Tube	Obsolete	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	0°C ~ 70°C	Surface Mount	14-SOIC (0.154", 3.90mm Width)	14-SOIC
	DS1511W IC RTC CLK/CALENDAR PAR 28-EDIP Analog Devices Inc./Maxim Integrated	453	$0.00			Tube	Obsolete	Clock/Calendar	Alarm, Leap Year, NVSRAM, Square Wave Output, Watchdog Timer, Y2K	256B	HH:MM:SS (24 hr)	YY-MM-DD-dd	Parallel	3V ~ 3.6V	2.5V ~ 3.7V	4mA @ 3V ~ 3.6V	0°C ~ 70°C	Through Hole	28-DIP Module (0.600", 15.24mm)	28-EDIP
	DS1501WE IC RTC CLK/CALENDAR PAR 28-TSOP Analog Devices Inc./Maxim Integrated	207	$0.00			Tray	Obsolete	Clock/Calendar	Alarm, Leap Year, NVSRAM, Square Wave Output, Watchdog Timer, Y2K	256B	HH:MM:SS (24 hr)	YY-MM-DD-dd	Parallel	3V ~ 3.6V	2.5V ~ 3.7V	4mA @ 3V ~ 3.6V	0°C ~ 70°C	Surface Mount	28-TSSOP (0.465", 11.80mm Width)	28-TSOP
	DS12885Q IC RTC CLK/CALENDAR PAR 28-PLCC Analog Devices Inc./Maxim Integrated	361	$0.00			Tube	Obsolete	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-LCC (J-Lead)	28-PLCC (11.51x11.51)
	DS14285Q IC RTC CLK/CALENDAR PAR 28-PLCC Analog Devices Inc./Maxim Integrated	112	$0.00			Tube	Obsolete	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 ~ 3.6V	0.5µA @ 4.5V ~ 5.5V	0°C ~ 70°C	Surface Mount	28-LCC (J-Lead)	28-PLCC (11.51x11.51)
	DS1685QN-5 IC RTC CLK/CALENDAR PAR 28-PLCC Analog Devices Inc./Maxim Integrated	225	$4.26			Tube	Obsolete	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	28-LCC (J-Lead)	28-PLCC (11.51x11.51)
	DS1307ZN IC RTC CLK/CALENDAR I2C 8-SOIC Analog Devices Inc./Maxim Integrated	43	$0.00			Tube	Obsolete	Clock/Calendar	Leap Year, NVSRAM, Square Wave Output	56B	HH:MM:SS (12/24 hr)	YY-MM-DD-dd	I²C, 2-Wire Serial	4.5V ~ 5.5V	2V ~ 3.5V	200µA @ 5V	-40°C ~ 85°C	Surface Mount	8-SOIC (0.154", 3.90mm Width)	8-SOIC
	DS1689S IC RTC CLK/CALENDAR PAR 28-SOIC Analog Devices Inc./Maxim Integrated	159	$0.00			Tube	Obsolete	Clock/Calendar	NVSRAM	114B	HH:MM:SS (12/24 hr)	YY-MM-DD-dd	Parallel	2.7V ~ 3.3V, 4.5V ~ 5.5V	2.5V ~ 3.7V	2mA @ 3V, 3mA @ 5V	0°C ~ 70°C	Surface Mount	28-SOIC (0.337", 8.56mm Width)	28-SOIC
	DS1688S IC RTC CLK/CALENDAR PAR 28-SOIC Analog Devices Inc./Maxim Integrated	32	$7.72			Tube	Obsolete	Clock/Calendar	Alarm, Leap Year, Square Wave Output, Unique ID	114B	HH:MM:SS (12/24 hr)	YY-MM-DD	Parallel	2.7V ~ 3.3V, 4.5V ~ 5.5V	-	-	0°C ~ 70°C	Surface Mount	28-SOIC (0.337", 8.56mm Width)	28-SOIC
	DS1302 IC RTC CLK/CALENDAR SER 8-DIP Analog Devices Inc./Maxim Integrated	176	$0.00			Tube	Obsolete	Clock/Calendar	Leap Year, NVSRAM, Trickle-Charger	31B	HH:MM:SS (12/24 hr)	YY-MM-DD-dd	3-Wire Serial	2V ~ 5.5V	2V ~ 5.5V	0.3µA ~ 1µA @ 2V ~ 5V	0°C ~ 70°C	Through Hole	8-DIP (0.300", 7.62mm)	8-PDIP