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
	DS1339U-2+T&R IC RTC CLK/CALENDAR I2C 8-USOP Analog Devices Inc./Maxim Integrated	22	$2.46			Tape & Reel (TR)	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
	RV-3149-C3-32.768KHZ-OPTION-A-TA-QC IC RTC CLK/CALENDAR SPI 10SON Micro Crystal AG	115	$2.47			Tape & Reel (TR)	Active	Clock/Calendar	Alarm, EEPROM, Leap Year, Programmable Clock Output, RAM, Temperature, Timer, Trickle Charger	2B, 8B	HH:MM:SS (12/24 hr)	YY-MM-DD-dd	SPI, 4-Wire Serial	1.3V ~ 5.5V	-	1µA @ 3V	-40°C ~ 85°C (TA)	Surface Mount	10-VCDFN	10-SON (3.7x2.5)
	RV-3129-C3-32.768KHZ-OPTION-A-TA-QC IC RTC CLK/CALENDAR I2C 10SON Micro Crystal AG	391	$2.49			Tape & Reel (TR)	Active	Clock/Calendar	Alarm, EEPROM, Leap Year, Programmable Clock Output, RAM, Temperature, Timer, Trickle Charger	2B, 8B	HH:MM:SS (12/24 hr)	YY-MM-DD-dd	I²C, 2-Wire Serial	1.3V ~ 5.5V	-	1µA @ 3V	-40°C ~ 85°C (TA)	Surface Mount	10-VCDFN	10-SON (3.7x2.5)
	1339-31DCGI8 IC RTC CLK/CALENDAR I2C 8-SOIC Renesas Electronics America Inc	32	$2.46			Tape & Reel (TR)	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	3.3V ~ 5.5V	1.3V ~ 3.7V	200µA @ 3.63V ~ 5.5V	-40°C ~ 85°C	Surface Mount	8-SOIC (0.154", 3.90mm Width)	8-SOIC
	RV-1805-C3-32.768KHZ-2PPM-TA-QC IC RTC CLK/CALENDAR I2C 10SON Micro Crystal AG	245	$2.46			Tape & Reel (TR)	Not For New Designs	Clock/Calendar	Alarm, Programmable Clock Output, RAM, Timer, Trickle Charger, Watchdog Timer	256B	HH:MM:SS:hh (12/24 hr)	YY-MM-DD-dd	I²C, 2-Wire Serial	1.5V ~ 3.6V	-	0.08µA @ 3V	-40°C ~ 85°C (TA)	Surface Mount	10-VCDFN	10-SON (3.7x2.5)
	V3020XSO8A+ ULTRA LOW POWER 1-BIT 32KHZ RTC, EM Microelectronic	8	$2.55			Tube	Active	Clock/Calendar	Alarm, Leap Year, RAM	1B	HH:MM:SS:hh (12/24 hr)	YY-MM-DD-dd	3-Wire Serial	1.2V ~ 5.5V	-	7µA @ 5V	-40°C ~ 125°C (TA)	Surface Mount	8-SOIC (0.154", 3.90mm Width)	8-SOIC
	ISL1209IU10Z-TK IC RTC EVENT REC I2C 10-MSOP Renesas Electronics America Inc	175	$4.26			Tape & Reel (TR)	Active	Time Event Recorder	Alarm, Leap Year, SRAM	2B	HH:MM:SS (12/24 hr)	YY-MM-DD-dd	I²C, 2-Wire Serial	2.7V ~ 5.5V	1.8V ~ 5.5V	4µA ~ 6µA @ 3V ~ 5V	-40°C ~ 85°C	Surface Mount	10-TFSOP, 10-MSOP (0.118", 3.00mm Width)	10-MSOP
	DS1339BU+T IC RTC CLK/CALENDAR I2C 8-UMAX Analog Devices Inc./Maxim Integrated	40	$4.55			Tape & Reel (TR)	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
	ISL1219IUZ-T IC RTC EVENT REC I2C 10-MSOP Renesas Electronics America Inc	201	$2.56			Tape & Reel (TR)	Active	Time Event Recorder	Alarm, Leap Year, SRAM	2B	HH:MM:SS (12/24 hr)	YY-MM-DD-dd	I²C, 2-Wire Serial	2.7V ~ 5.5V	1.8V ~ 5.5V	4µA ~ 6µA @ 3V ~ 5V	-40°C ~ 85°C	Surface Mount	10-TFSOP, 10-MSOP (0.118", 3.00mm Width)	10-MSOP
	ISL12026IVZ-T IC RTC CLK/CALENDAR I2C 8-TSSOP Renesas Electronics America Inc	66	$4.34			Tape & Reel (TR)	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
	ISL12026AIBZ-T IC RTC CLK/CALENDAR I2C 8-SOIC Renesas Electronics America Inc	307	$2.63			Tape & Reel (TR)	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-SOIC (0.154", 3.90mm Width)	8-SOIC
	ISL12026AIVZ IC RTC CLK/CALENDAR I2C 8-TSSOP Renesas Electronics America Inc	268	$2.59			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
	ISL12024IBZ-T IC RTC CLK/CALENDAR I2C 8-SOIC Renesas Electronics America Inc	26	$5.32			Tape & Reel (TR)	Obsolete	Clock/Calendar	Alarm, Leap Year, Unique ID	-	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-SOIC (0.154", 3.90mm Width)	8-SOIC
	ISL12024IBZ IC RTC CLK/CALENDAR I2C 8-SOIC Renesas Electronics America Inc	28	$5.31			Tube	Obsolete	Clock/Calendar	Alarm, Leap Year, Unique ID	-	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-SOIC (0.154", 3.90mm Width)	8-SOIC
	DS12R885S-33+T&R IC RTC CLK/CALENDAR PAR 24-SOIC Analog Devices Inc./Maxim Integrated	190	$2.73			Tape & Reel (TR)	Active	Clock/Calendar	Alarm, Leap Year, NVSRAM, Square Wave Output, Trickle-Charger	114B	HH:MM:SS (12/24 hr)	YY-MM-DD-dd	Parallel	2.97V ~ 3.63V	2V ~ 3.05V	2mA @ 2.97V ~ 3.63V	-40°C ~ 85°C	Surface Mount	24-SOIC (0.295", 7.50mm Width)	24-SOIC
	DS12R885S-5+T&R IC RTC CLK/CALENDAR PAR 24-SOIC Analog Devices Inc./Maxim Integrated	239	$2.70			Tape & Reel (TR)	Active	Clock/Calendar	Alarm, Leap Year, NVSRAM, Square Wave Output, Trickle-Charger	114B	HH:MM:SS (12/24 hr)	YY-MM-DD-dd	Parallel	4.5V ~ 5.5V	2V ~ 3.05V	2mA @ 4.5V ~ 5.5V	-40°C ~ 85°C	Surface Mount	24-SOIC (0.295", 7.50mm Width)	24-SOIC
	RV-8564-C2-32.768KHZ-10PPM-TA-QC IC RTC CLK/CALENDAR I2C 10SON Micro Crystal AG	286	$2.77			Tape & Reel (TR)	Active	Clock/Calendar	Alarm, Leap Year, Programmable Clock Output, Timer	-	HH:MM:SS (24 hr)	YY-MM-DD-dd	I²C, 2-Wire Serial	1V ~ 5.5V	-	0.35µA @ 3V	-40°C ~ 85°C (TA)	Surface Mount	10-TCDFN Exposed Pad	10-SON (5x3.2)
	1338-31DCGI IC RTC CLK/CALENDAR I2C 8-SOIC Renesas Electronics America Inc	133	$2.78			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	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
	ISL12058IBZ IC RTC CLK/CALENDAR I2C 8-SOIC Renesas Electronics America Inc	292	$2.87			Tube	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
	1339AC-2SRGI8 IC RTC CLK/CALENDAR I2C 16-SOIC Renesas Electronics America Inc	456	$0.00			Tape & Reel (TR)	Obsolete	Clock/Calendar	Alarm, Leap Year, Square Wave Output, Trickle-Charger	-	HH:MM:SS (12/24 hr)	YY-MM-DD-dd	I²C, 2-Wire Serial	1.7V ~ 5.5V	1.3V ~ 3.7V	200µA @ 3.63V ~ 5.5V	-40°C ~ 85°C	Surface Mount	16-SOIC (0.295", 7.50mm Width)	16-SOIC