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

200 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
	PCF8563TS/4,118 IC RTC CLK/CALENDAR I2C 8-TSSOP NXP USA Inc.	391	$2.07			Tape & Reel (TR)	Active	Clock/Calendar	Alarm, Leap Year, Watchdog Timer	-	HH:MM:SS (24 hr)	YY-MM-DD-dd	I²C, 2-Wire Serial	1.8V ~ 5.5V	-	0.6µA ~ 0.75µA @ 2V ~ 5V	-40°C ~ 85°C	Surface Mount	8-TSSOP, 8-MSOP (0.118", 3.00mm Width)	8-TSSOP
	M41T80M6F IC RTC CLK/CALENDAR I2C 8-SOIC STMicroelectronics	124	$3.08			Tape & Reel (TR)	Active	Clock/Calendar	Alarm, Leap Year, Square Wave Output	-	HH:MM:SS:hh (24 hr)	YY-MM-DD-dd	I²C, 2-Wire Serial	2V ~ 5.5V	-	2.4µA ~ 31µA @ 2V ~ 5.5V	-40°C ~ 85°C	Surface Mount	8-SOIC (0.154", 3.90mm Width)	8-SOIC
	M41T01M6F IC RTC CLK/CALENDAR I2C 8-SOIC STMicroelectronics	224	$3.79			Tape & Reel (TR)	Active	Clock/Calendar	Leap Year	-	HH:MM:SS	YY-MM-DD-dd	I²C, 2-Wire Serial	2V ~ 5.5V	2.5V ~ 3.5V	70µA @ 2V ~ 5.5V	-40°C ~ 85°C	Surface Mount	8-SOIC (0.154", 3.90mm Width)	8-SOIC
	M41T93RQA6F IC RTC CLK/CALENDAR SPI 16-QFN STMicroelectronics	105	$4.19			Tape & Reel (TR)	Active	Clock/Calendar	Alarm, Leap Year, Square Wave Output, SRAM, Watchdog Timer	7B	HH:MM:SS:hh (24 hr)	YY-MM-DD-dd	SPI	2.7V ~ 5.5V	1.8V ~ 5.5V	10µA @ 5.5V	-40°C ~ 85°C	Surface Mount	16-VQFN Exposed Pad	16-QFN (4x4)
	M41T83RQA6F IC RTC CLK/CAL I2C 16-VFQFPN STMicroelectronics	192	$4.18			Tape & Reel (TR)	Active	Clock/Calendar	Alarm, Leap Year, Square Wave Output, SRAM, Watchdog Timer	7B	HH:MM:SS:hh (24 hr)	YY-MM-DD-dd	I²C, 2-Wire Serial	2.7V ~ 5.5V	2V ~ 5.5V	10µA @ 5.5V	-40°C ~ 85°C	Surface Mount	16-VQFN Exposed Pad	16-QFN (4x4)
	M41T83SQA6F IC RTC CLK/CALENDAR I2C 16-QFN STMicroelectronics	119	$4.21			Tape & Reel (TR)	Active	Clock/Calendar	Alarm, Leap Year, Square Wave Output, SRAM, Watchdog Timer	7B	HH:MM:SS:hh (24 hr)	YY-MM-DD-dd	I²C, 2-Wire Serial	3V ~ 5.5V	2V ~ 5.5V	10µA @ 5.5V	-40°C ~ 85°C	Surface Mount	16-VQFN Exposed Pad	16-QFN (4x4)
	M41T83ZMY6F IC RTC CLK/CALENDAR I2C 18-SOX STMicroelectronics	52	$5.68			Tape & Reel (TR)	Active	Clock/Calendar	Alarm, Leap Year, Square Wave Output, SRAM, Watchdog Timer	7B	HH:MM:SS:hh (24 hr)	YY-MM-DD-dd	I²C, 2-Wire Serial	2.38V ~ 5.5V	2V ~ 5.5V	10µA @ 5.5V	-40°C ~ 85°C	Surface Mount	18-SOX, 18-SOIC with Crystal (7.5mm Width)	18-SOX
	PCF8593T/1,118 IC RTC CLK/CALENDAR I2C 8-SOIC NXP USA Inc.	151	$3.86			Tape & Reel (TR)	Active	Clock/Calendar	Alarm, NVSRAM	8B	HH:MM:SS:hh (12/24 hr)	YY-MM-DD-dd	I²C, 2-Wire Serial	2.5V ~ 6V	-	8µA ~ 15µA @ 2V ~ 5V	-40°C ~ 85°C	Surface Mount	8-SOIC (0.154", 3.90mm Width)	8-SO
	PCF2127AT/2Y IC RTC CLK/CAL I2C/SPI 20-SOIC NXP USA Inc.	67	$5.63			Tape & Reel (TR)	Active	Clock/Calendar	Alarm, Leap Year, Square Wave Output, SRAM, TCXO/Crystal, Watchdog Timer	512B	HH:MM:SS (12/24 hr)	YY-MM-DD-dd	I²C, 2-Wire Serial	1.8V ~ 4.2V	1.8V ~ 4.2V	1.5µA @ 3.3V	-40°C ~ 85°C	Surface Mount	20-SOIC (0.295", 7.50mm Width)	20-SO
	PCF2129AT/2,518 IC RTC CLK/CAL I2C/SPI 20-SOIC NXP USA Inc.	84	$6.16			Tape & Reel (TR)	Active	Clock/Calendar	Alarm, Leap Year, Square Wave Output, TCXO/Crystal, Watchdog Timer	-	HH:MM:SS (12/24 hr)	YY-MM-DD-dd	I²C, 2-Wire Serial	1.8V ~ 4.2V	1.8V ~ 4.2V	1.5µA @ 3.3V	-40°C ~ 85°C	Surface Mount	20-SOIC (0.295", 7.50mm Width)	20-SO
	PCF2129T/2,518 IC RTC CLK/CAL I2C/SPI 16-SOIC NXP USA Inc.	3	$6.37			Tape & Reel (TR)	Active	Clock/Calendar	Alarm, Leap Year, Square Wave Output, TCXO/Crystal, Watchdog Timer	-	HH:MM:SS (12/24 hr)	YY-MM-DD-dd	I²C, 2-Wire Serial	1.8V ~ 4.2V	1.8V ~ 4.2V	1.5µA @ 3.3V	-40°C ~ 85°C	Surface Mount	16-SOIC (0.295", 7.50mm Width)	16-SO
	DS1302ZN+ IC RTC CLK/CALENDAR SER 8-SOIC Analog Devices Inc./Maxim Integrated	173	$5.22			Tube	Active	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	-40°C ~ 85°C	Surface Mount	8-SOIC (0.154", 3.90mm Width)	8-SOIC
	DS3231MZ+TRL IC RTC CLK/CALENDAR I2C 8-SOIC Analog Devices Inc./Maxim Integrated	8	$8.48			Tape & Reel (TR)	Active	Clock/Calendar	Alarm, Leap Year, Square Wave Output	-	HH:MM:SS (12/24 hr)	YY-MM-DD-dd	I²C, 2-Wire Serial	2.3V ~ 5.5V	2.3V ~ 5.5V	130µA ~ 200µA @ 3.63V ~ 5.5V	-40°C ~ 85°C	Surface Mount	8-SOIC (0.154", 3.90mm Width)	8-SOIC
	PCF2127T/2Y IC RTC CLK/CAL I2C/SPI 16-SOIC NXP USA Inc.	171	$5.61			Tape & Reel (TR)	Active	Clock/Calendar	Alarm, Leap Year, Square Wave Output, SRAM, TCXO/Crystal, Watchdog Timer	512B	HH:MM:SS (12/24 hr)	YY-MM-DD-dd	I²C, 2-Wire Serial	1.8V ~ 4.2V	1.8V ~ 4.2V	1.5µA @ 3.3V	-40°C ~ 85°C	Surface Mount	16-SOIC (0.295", 7.50mm Width)	16-SO
	PCA2129T/Q900/2,51 IC RTC CLK/CAL I2C/SPI 16-SOIC NXP USA Inc.	142	$6.53			Tape & Reel (TR)	Active	Clock/Calendar	Alarm, Leap Year, Square Wave Output, TCXO/Crystal, Watchdog Timer	-	HH:MM:SS (12/24 hr)	YY-MM-DD-dd	I²C, 2-Wire Serial	1.8V ~ 4.2V	1.8V ~ 4.2V	1.5µA @ 3.3V	-40°C ~ 85°C	Surface Mount	16-SOIC (0.295", 7.50mm Width)	16-SO
	DS12C887A+ IC RTC CLK/CALENDAR PAR 24-EDIP Analog Devices Inc./Maxim Integrated	14	$10.59			Tube	Active	Clock/Calendar	Alarm, Daylight Savings, Leap Year, NVSRAM, Square Wave Output	113B	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-DIP Module (0.600", 15.24mm)	24-EDIP
	M48T18-100PC1 IC RTC CLK/CALENDAR PAR 28DIP STMicroelectronics	32	$28.00		Timekeeper®	Tube	Active	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-DIP Module (0.600", 15.24mm)	28-PCDIP, CAPHAT®
	BQ32002DR IC RTC CLK/CALENDAR I2C 8-SOIC Texas Instruments	525	$1.38			Tape & Reel (TR)	Active	Clock/Calendar	Leap Year, Square Wave Output, Trickle-Charger	-	HH:MM:SS (24 hr)	YY-MM-DD-dd	I²C, 2-Wire Serial	3V ~ 3.6V	1.4V ~ 3.6V	65µA @ 3.3V	-40°C ~ 85°C	Surface Mount	8-SOIC (0.154", 3.90mm Width)	8-SOIC
	PCF8563TS/5,118 IC RTC CLK/CALENDAR I2C 8-TSSOP NXP USA Inc.	481	$1.69			Tape & Reel (TR)	Active	Clock/Calendar	Alarm, Leap Year, Watchdog Timer	-	HH:MM:SS (24 hr)	YY-MM-DD-dd	I²C, 2-Wire Serial	1.8V ~ 5.5V	-	0.6µA ~ 0.75µA @ 2V ~ 5V	-40°C ~ 85°C	Surface Mount	8-TSSOP, 8-MSOP (0.118", 3.00mm Width)	8-TSSOP
	PCA8565TS/1,118 IC RTC CLK/CALENDAR I2C 8-TSSOP NXP USA Inc.	123	$2.31			Tape & Reel (TR)	Active	Clock/Calendar	Alarm, Leap Year, Square Wave Output, Watchdog Timer	-	HH:MM:SS (24 hr)	YY-MM-DD-dd	I²C, 2-Wire Serial	1.8V ~ 5.5V	-	1.2µA ~ 5µA @ 2V ~ 5V	-40°C ~ 125°C	Surface Mount	8-TSSOP, 8-MSOP (0.118", 3.00mm Width)	8-TSSOP