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
	BQ32000D IC RTC CLK/CALENDAR I2C 8-SOIC Texas Instruments	393	$1.82			Bulk	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	100µA @ 3.3V	-40°C ~ 85°C	Surface Mount	8-SOIC (0.154", 3.90mm Width)	8-SOIC
	1338-31DCGI8 IC RTC CLK/CALENDAR I2C 8-SOIC Renesas Electronics America Inc	3	$4.02			Tape & Reel (TR)	Active	Clock/Calendar	Leap Year, NVSRAM, Square Wave Output	56B	HH:MM:SS (12/24 hr)	YY-MM-DD-dd	I²C, 2-Wire Serial	3.3V ~ 5.5V	1.3V ~ 3.7V	5µA @ 3.63V ~ 5.5V	-40°C ~ 85°C	Surface Mount	8-SOIC (0.154", 3.90mm Width)	8-SOIC
	ISL12026IVZ IC RTC CLK/CALENDAR I2C 8-TSSOP Renesas Electronics America Inc	152	$4.34			Tube	Active	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 ~ 5.5V	-40°C ~ 85°C	Surface Mount	8-TSSOP (0.173", 4.40mm Width)	8-TSSOP
	DS1391U-18+ IC RTC CLK/CALENDAR SPI 10-USOP Analog Devices Inc./Maxim Integrated	141	$4.64			Tube	Active	Clock/Calendar	Alarm, Leap Year, Square Wave Output, Trickle-Charger	-	HH:MM:SS:hh (12/24 hr)	YY-MM-DD-dd	SPI	1.71V ~ 1.89V	1.3V ~ 3.7V	100µA @ 1.71V ~ 1.89V	-40°C ~ 85°C	Surface Mount	10-TFSOP, 10-MSOP (0.118", 3.00mm Width)	10-uMAX/uSOP
	DS1672U-3+ IC RTC BINARY CNT I2C 8-USOP Analog Devices Inc./Maxim Integrated	67	$4.83			Tube	Active	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-TSSOP, 8-MSOP (0.118", 3.00mm Width)	8-uMAX/uSOP
	DS12885T+ IC RTC CLK/CALENDAR PAR 32-TQFP Analog Devices Inc./Maxim Integrated	28	$10.93			Tray	Active	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	32-TQFP	32-TQFP (7x7)
	M48T35-70PC1 IC RTC CLK/CALENDAR PAR 28DIP STMicroelectronics	19	$35.08		Timekeeper®	Tube	Active	Clock/Calendar	Leap Year	-	HH:MM:SS (24 hr)	YY-MM-DD-dd	Parallel	4.75V ~ 5.5V	-	2mA @ 4.75V ~ 5.5V	0°C ~ 70°C	Through Hole	28-DIP Module (0.600", 15.24mm)	28-PCDIP, CAPHAT®
	PT7C4563BWEX IC RTC I2C SER 8SOIC T&R 2.5K Diodes Incorporated	353	$0.89			Tape & Reel (TR)	Active	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-SOIC (0.154", 3.90mm Width)	8-SOIC
	ECS-RTC-SOP8-5101A-TR IC RTC CLK/CALENDAR I2C MODULE ECS Inc.	361	$0.95			Tape & Reel (TR)	Active	Clock/Calendar	Alarm, Leap Year	-	HH:MM:SS	YY-MM-DD-dd	I²C, Serial	1.6V ~ 5.5V	-	0.5µA ~ 0.52µA @ 3V ~ 5V	-40°C ~ 85°C	Surface Mount	8-SOIC (0.154", 3.90mm Width)	8-SOP
	PT7C4372ALEX IC RTC CLK/CALENDAR I2C TSSOP Diodes Incorporated	769	$1.09			Tape & Reel (TR)	Active	Clock/Calendar	Alarm, Leap Year	-	HH:MM:SS (12/24 hr)	YY-MM-DD-dd	I²C, 2-Wire Serial	1.8V ~ 6V	-	0.8µA @ 3V	-40°C ~ 85°C	Surface Mount	8-TSSOP (0.173", 4.40mm Width)	8-TSSOP
	PT7C4337UEX IC RTC CLK/CALENDAR I2C MSOP Diodes Incorporated	656	$1.30			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	1.8V ~ 5.5V	-	0.8µA @ 1.3V ~ 1.8V	-40°C ~ 85°C	Surface Mount	8-TSSOP, 8-MSOP (0.118", 3.00mm Width)	8-MSOP
	PT7C43390LEX IC RTC CLK/CALENDAR I2C TSSOP Diodes Incorporated	562	$1.66			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	1.3V ~ 5.5V	-	0.65µA ~ 0.7µA @ 3V ~ 5V	-40°C ~ 85°C	Surface Mount	8-TSSOP, 8-MSOP (0.118", 3.00mm Width)	8-MSOP
	R2262L01-E2 3-WIRE SERIAL INTERFACE REAL TIM Nisshinbo Micro Devices Inc.	41	$1.68			Tape & Reel (TR)	Active	Clock/Calendar	Alarm, Leap Year, RAM, SRAM	-	HH:MM:SS (12/24 hr)	YY-MM-DD-dd	3-Wire Serial	2.63V ~ 5.5V	-	0.9µA @ 3V	-40°C ~ 85°C (TA)	Surface Mount	18-XFQFN Exposed Pad	18-QFN (2x2)
	ISL12020CBZ REAL TIME CLOCK, NON-VOLATILE Intersil	497	$0.00			Bulk	Active	-	-	-	-	-	-	-	-	-	-	-	-	-
	DS1337U/TR DS1337 I2C SERIAL RTC Analog Devices Inc./Maxim Integrated	505	$0.00			Bulk	Active	-	-	-	-	-	-	-	-	-	-	-	-	-
	MCP79511T-I/MS IC RTC CLK/CALENDAR SPI 10-MSOP Microchip Technology	264	$1.36			Tape & Reel (TR)	Active	Clock/Calendar	Alarm, EEPROM, Leap Year, Square Wave Output, SRAM, Unique ID	64B	HH:MM:SS:hh (12/24 hr)	YY-MM-DD-dd	SPI	1.8V ~ 3.6V	1.3V ~ 3.6V	1µA @ 1.8V ~ 3.6V	-40°C ~ 85°C	Surface Mount	10-TFSOP, 10-MSOP (0.118", 3.00mm Width)	10-MSOP
	ISL12057IBZ-T IC RTC CLK/CALENDAR I2C 8-SOIC Renesas Electronics America Inc	189	$2.84			Tape & Reel (TR)	Active	Clock/Calendar	Alarm, Leap Year	-	HH:MM:SS (12/24 hr)	YY-MM-DD-dd	I²C, 2-Wire Serial	1.8V ~ 3.6V	-	0.65µA @ 1.8V	-40°C ~ 85°C	Surface Mount	8-SOIC (0.154", 3.90mm Width)	8-SOIC
	ISL12057IUZ-T IC RTC CLK/CALENDAR I2C 8-MSOP Renesas Electronics America Inc	43	$2.84			Tape & Reel (TR)	Active	Clock/Calendar	Alarm, Leap Year	-	HH:MM:SS (12/24 hr)	YY-MM-DD-dd	I²C, 2-Wire Serial	1.8V ~ 3.6V	-	0.65µA @ 1.8V	-40°C ~ 85°C	Surface Mount	8-TSSOP, 8-MSOP (0.118", 3.00mm Width)	8-MSOP
	DS1307Z/TR DS1307 64 X 8, SERIAL, I2C RTC Analog Devices Inc./Maxim Integrated	235	$0.00			Bulk	Active	-	-	-	-	-	-	-	-	-	-	-	-	-
	PCF8593P112 RTC VOLATILE 0 TIMER(S) NXP USA Inc.	44	$0.00			Bulk	Active	-	-	-	-	-	-	-	-	-	-	-	-	-