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
	DS1338U-18+ IC RTC CLK/CALENDAR I2C 8-USOP Analog Devices Inc./Maxim Integrated	7	$4.54			Tube	Active	Clock/Calendar	Leap Year, NVSRAM, Square Wave Output	56B	HH:MM:SS (12/24 hr)	YY-MM-DD-dd	I²C, 2-Wire Serial	1.71V ~ 5.5V	1.3V ~ 3.7V	100µA @ 1.89V	-40°C ~ 85°C	Surface Mount	8-TSSOP, 8-MSOP (0.118", 3.00mm Width)	8-uMAX/uSOP
	DS1394U-33+ IC RTC CLK/CALENDAR SPI 10-MSOP Analog Devices Inc./Maxim Integrated	194	$4.84			Tube	Active	Clock/Calendar	Alarm, Leap Year, Square Wave Output, Trickle-Charger	-	HH:MM:SS:hh (12/24 hr)	YY-MM-DD-dd	SPI	2.97V ~ 5.5V	1.3V ~ 5.5V	175µA @ 2.97V ~ 5.5V	-40°C ~ 85°C	Surface Mount	10-TFSOP, 10-MSOP (0.118", 3.00mm Width)	10-uMAX/uSOP
	DS1339U-2+ IC RTC CLK/CALENDAR I2C 8-USOP Analog Devices Inc./Maxim Integrated	161	$4.82			Tube	Active	Clock/Calendar	Alarm, Leap Year, Square Wave Output, Trickle-Charger	-	HH:MM:SS (12/24 hr)	YY-MM-DD-dd	I²C, 2-Wire Serial	1.8V ~ 5.5V	1.3V ~ 3.7V	100µA @ 2.2V	-40°C ~ 85°C	Surface Mount	8-TSSOP, 8-MSOP (0.118", 3.00mm Width)	8-uMAX/uSOP
	DS1339BU+ IC RTC CLK/CALENDAR I2C 8-UMAX Analog Devices Inc./Maxim Integrated	89	$5.02			Tube	Active	Clock/Calendar	Alarm, Leap Year, Square Wave Output, Trickle-Charger	-	HH:MM:SS (12/24 hr)	YY-MM-DD-dd	I²C, 2-Wire Serial	1.71V ~ 5.5V	1.3V ~ 3.7V	200µA @ 1.71V ~ 5.5V	-40°C ~ 85°C	Surface Mount	8-TSSOP, 8-MSOP (0.118", 3.00mm Width)	8-uMAX/uSOP
	DS1343E-33+ IC RTC CLK/CALENDAR SPI 20-TSSOP Analog Devices Inc./Maxim Integrated	43	$5.97			Tube	Active	Clock/Calendar	Alarm, Leap Year, NVRAM, Square Wave Output, Trickle Charger	96B	HH:MM:SS (12/24 hr)	YY-MM-DD-dd	SPI	3V ~ 5.5V	1.3V ~ 5.5V	120µA ~ 160µA @ 3.63V ~ 5.5V	-40°C ~ 85°C	Surface Mount	20-TSSOP (0.173", 4.40mm Width)	20-TSSOP
	DS1388Z-5+ IC RTC CLK/CALENDAR I2C 8-SOIC Analog Devices Inc./Maxim Integrated	144	$6.30			Tube	Active	Clock/Calendar	EEPROM, Leap Year, Supervisor, Trickle-Charger, Watchdog Timer	512B	HH:MM:SS:hh (12/24 hr)	YY-MM-DD-dd	I²C, 2-Wire Serial	4.5V ~ 5.5V	1.3V ~ 5.5V	270µA @ 4.5V ~ 5.5V	-40°C ~ 85°C	Surface Mount	8-SOIC (0.154", 3.90mm Width)	8-SOIC
	DS1306E+ IC RTC CLK/CALENDAR SPI 20-TSSOP Analog Devices Inc./Maxim Integrated	128	$6.41			Tube	Active	Clock/Calendar	Alarm, Leap Year, NVSRAM, Square Wave Output, Trickle-Charger	96B	HH:MM:SS (12/24 hr)	YY-MM-DD-dd	SPI	2V ~ 5.5V	2V ~ 5.5V	25.3µA ~ 81µA @ 2V ~ 5V	0°C ~ 70°C	Surface Mount	20-TSSOP (0.173", 4.40mm Width)	20-TSSOP
	DS1685S-5+ IC RTC CLK/CALENDAR PAR 24-SOIC Analog Devices Inc./Maxim Integrated	41	$7.59			Tube	Active	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-SOIC (0.295", 7.50mm Width)	24-SOIC
	DS1306N+ IC RTC CLK/CALENDAR SPI 16-DIP Analog Devices Inc./Maxim Integrated	64	$8.38			Tube	Active	Clock/Calendar	Alarm, Leap Year, NVSRAM, Square Wave Output, Trickle-Charger	96B	HH:MM:SS (12/24 hr)	YY-MM-DD-dd	SPI	2V ~ 5.5V	2V ~ 5.5V	25.3µA ~ 81µA @ 2V ~ 5V	-40°C ~ 85°C	Through Hole	16-DIP (0.300", 7.62mm)	16-PDIP
	V3025SO28A+ VERY LOW POWER 8-BIT 32KHZ RTC M EM Microelectronic	22	$11.76			Tube	Active	Clock/Calendar	Alarm, Leap Year, RAM	8B	HH:MM:SS:hh (12/24 hr)	YY-MM-DD-dd	-	2V ~ 5.5V	-	15µA @ 5.5V	-40°C ~ 85°C (TA)	Surface Mount	28-SOIC (0.295", 7.50mm Width)	28-SOIC
	M48T201Y-70MH1F IC RTC CLK/CALENDAR PAR 44-SOH STMicroelectronics	51	$16.76		Timekeeper®	Tape & Reel (TR)	Active	Clock/Calendar	Alarm, Leap Year, Square Wave Output, Supervisor, Watchdog Timer, Y2K	-	HH:MM:SS (24 hr)	YY-MM-DD-dd	Parallel	4.5V ~ 5.5V	3V	3mA @ 4.5V ~ 5.5V	0°C ~ 70°C	Surface Mount	44-BSOP (0.337", 8.56mm Width) requires SNAPHAT	44-SOH
	DS1501YZN+ IC RTC CLK/CALENDAR PAR 28-SOIC Analog Devices Inc./Maxim Integrated	66	$13.64			Tube	Active	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-SOIC (0.295", 7.50mm Width)	28-SOIC
	DS1687-5+ IC RTC CLK/CALENDAR PAR 24-EDIP Analog Devices Inc./Maxim Integrated	30	$16.12			Tube	Active	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	Through Hole	24-DIP Module (0.600", 15.24mm)	24-EDIP
	DS1315-5+ IC RTC PHANTOM PAR 16-DIP Analog Devices Inc./Maxim Integrated	35	$18.22			Tube	Active	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	0°C ~ 70°C	Through Hole	16-DIP (0.300", 7.62mm)	16-PDIP
	DS1687-3IND+ IC RTC CLK/CALENDAR PAR 24-EDIP Analog Devices Inc./Maxim Integrated	24	$18.38			Tube	Active	Clock/Calendar	Alarm, NVSRAM, Square Wave Output, Y2K	242B	HH:MM:SS (12/24 hr)	YY-MM-DD-dd	Parallel	2.7V ~ 3.7V	2.5V ~ 3.7V	2mA @ 3V	-40°C ~ 85°C	Through Hole	24-DIP Module (0.600", 15.24mm)	24-EDIP
	DS1315SN-5+ IC RTC PHANTOM PAR 16-SOIC Analog Devices Inc./Maxim Integrated	26	$20.45			Tube	Active	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	Surface Mount	16-SOIC (0.295", 7.50mm Width)	16-SOIC
	DP8570AV/NOPB IC RTC CLK/CALENDAR PAR 28-PLCC Texas Instruments	6	$34.68			Tube	Active	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-LCC (J-Lead)	28-PLCC (11.51x11.51)
	DS1746P-70+ IC RTC CLK/CALENDAR PAR 34-PCM Analog Devices Inc./Maxim Integrated	4	$36.35			Tray	Active	Clock/Calendar	Leap Year, NVSRAM, Y2K	128KB	HH:MM:SS (24 hr)	YY-MM-DD-dd	Parallel	4.5V ~ 5.5V	3V	4mA @ 5V	0°C ~ 70°C	Surface Mount	34-PowerCap™ Module	34-PowerCap Module
	DS1556W-120IND+ IC RTC CLK/CALENDAR PAR 32-EDIP Analog Devices Inc./Maxim Integrated	12	$43.97			Tube	Active	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	-40°C ~ 85°C	Through Hole	32-DIP Module (0.600", 15.24mm)	32-EDIP
	R2051L02-E2 2 WIRE INTERFACE REAL-TIME CLOCK Nisshinbo Micro Devices Inc.	505	$1.71			Tape & Reel (TR)	Active	Clock/Calendar	Alarm, Leap Year	-	HH:MM:SS (12/24 hr)	YY-MM-DD-dd	I²C, 2-Wire Serial	2.34V ~ 5.5V	-	1µA @ 3V	-40°C ~ 85°C	Surface Mount	16-XFQFN Exposed Pad	QFN023023-16