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
	1339AC-31SRGI8 IC RTC CLK/CALENDAR I2C 16-SOIC Renesas Electronics America Inc	309	$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	2.7V ~ 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
	M41T00AUDD1F IC RTC CLK/CALENDAR I2C 16-DFN STMicroelectronics	266	$2.95			Tape & Reel (TR)	Active	Clock/Calendar	Audio, Leap Year, Trickle-Charger	-	HH:MM:SS (24 hr)	YY-MM-DD-dd	I²C, 2-Wire Serial	3V ~ 3.6V	1.7V ~ 3.6V	14.3mA @ 3V ~ 3.6V	0°C ~ 70°C	Surface Mount	16-VFDFN Exposed Pad	16-DFN (5x4)
	RV-2123-C2-32.768KHZ-10PPM-TA-QC IC RTC CLK/CALENDAR SPI 10SON Micro Crystal AG	178	$3.01			Tape & Reel (TR)	Active	Clock/Calendar	Alarm, Leap Year, Programmable Clock Output, Timer	-	HH:MM:SS (12/24 hr)	YY-MM-DD-dd	SPI, 4-Wire Serial	1.1V ~ 5.5V	-	0.18µA @ 3V	-40°C ~ 85°C (TA)	Surface Mount	10-TCDFN Exposed Pad	10-SON (5x3.2)
	1337AGDVGI IC RTC CLK/CALENDAR I2C 8-TSSOP Renesas Electronics America Inc	61	$3.01			Tube	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	-	0.3µA @ 1.3V ~ 1.8V	-40°C ~ 85°C	Surface Mount	8-TSSOP, 8-MSOP (0.118", 3.00mm Width)	8-TSSOP
	ISL1208IB8Z-T7A IC RTC CLK/CALENDAR I2C 8-SOIC Renesas Electronics America Inc	138	$4.47			Tape & Reel (TR)	Active	Clock/Calendar	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	8-SOIC (0.154", 3.90mm Width)	8-SOIC
	DS1343E-33+T&R IC RTC CLK/CALENDAR SPI 20-TSSOP Analog Devices Inc./Maxim Integrated	311	$3.03			Tape & Reel (TR)	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
	DS1343D-3+T&R IC RTC CLK/CAL SPI 14TDFN Analog Devices Inc./Maxim Integrated	272	$3.06			Tape & Reel (TR)	Active	Clock/Calendar	Alarm, Leap Year, NVRAM, Square Wave Output, Trickle Charger	96B	HH:MM:SS (12/24 hr)	YY-MM-DD-dd	SPI	2.7V ~ 5.5V	1.3V ~ 5.5V	-	-40°C ~ 85°C	Surface Mount	14-WFDFN Exposed Pad	14-TDFN (3x3)
	DS1344E-33+T&R IC RTC CLK/CALENDAR SPI 20-TSSOP Analog Devices Inc./Maxim Integrated	153	$3.11			Tape & Reel (TR)	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
	M41T62LC6F IC RTC CLK/CALENDAR I2C 8LCC STMicroelectronics	67	$6.21		Timekeeper®	Tape & Reel (TR)	Obsolete	Clock/Calendar	Alarm, Leap Year, Square Wave Output, Watchdog Timer	-	HH:MM:SS:hh (24 hr)	YY-MM-DD-dd	I²C, 2-Wire Serial	1.3V ~ 4.4V	-	0.7µA ~ 0.95µA @ 1.3V ~ 4.4V	-40°C ~ 85°C	Surface Mount	8-LCC	8-LCC (1.5x3.2)
	DS1393U-33+ IC RTC CLK/CALENDAR SER 10-USOP Analog Devices Inc./Maxim Integrated	152	$3.38			Tube	Active	Clock/Calendar	Alarm, Leap Year, Square Wave Output, Trickle-Charger	-	HH:MM:SS:hh (12/24 hr)	YY-MM-DD-dd	3-Wire Serial	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
	DS1388Z-3+T&R IC RTC CLK/CALENDAR I2C 8-SOIC Analog Devices Inc./Maxim Integrated	36	$3.38			Tape & Reel (TR)	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	2.7V ~ 3.3V	1.3V ~ 5.5V	140µA @ 2.7V ~ 3.3V	-40°C ~ 85°C	Surface Mount	8-SOIC (0.154", 3.90mm Width)	8-SOIC
	ISL12022IBZ-T IC RTC CLK/CALENDAR I2C 8-SOIC Renesas Electronics America Inc	180	$3.47			Tape & Reel (TR)	Active	Clock/Calendar	Alarm, Daylight Savings, Leap Year, SRAM	128B	HH:MM:SS (12/24 hr)	YY-MM-DD-dd	I²C, 2-Wire Serial	2.7V ~ 5.5V	1.8V ~ 5.5V	14µA ~ 15µA @ 3V ~ 5V	-40°C ~ 85°C	Surface Mount	8-SOIC (0.154", 3.90mm Width)	8-SOIC
	AB-RTCMK-32.768KHZ-T IC RTC CLK/CALENDAR I2C 8-SMT Abracon LLC	235	$4.07			Tape & Reel (TR)	Active	Clock/Calendar	Alarm, Leap Year, Square Wave Output, TCXO/Crystal	-	HH:MM:SS (12/24 hr)	YY-MM-DD	I²C, 2-Wire Serial	1.3V ~ 5.5V	-	2µA @ 3V	-40°C ~ 85°C	Surface Mount	8-SMD Module	8-SMT
	DS1308U-3+ IC RTC CLK/CALENDAR I2C 8-UMAX Analog Devices Inc./Maxim Integrated	220	$3.55			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	2.7V ~ 5.5V	1.3V ~ 5.5V	-	-40°C ~ 85°C	Surface Mount	8-TSSOP, 8-MSOP (0.118", 3.00mm Width)	8-uMAX/uSOP
	1339AC-2SRGI IC RTC CLK/CALENDAR I2C 16-SOIC Renesas Electronics America Inc	131	$0.00			Tube	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
	1339AC-31SRGI IC RTC CLK/CALENDAR I2C 16-SOIC Renesas Electronics America Inc	468	$0.00			Tube	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	2.7V ~ 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
	1337AGDCGI IC RTC CLK/CALENDAR I2C 8-SOIC Renesas Electronics America Inc	189	$3.56			Tube	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	-	0.3µA @ 1.3V ~ 1.8V	-40°C ~ 85°C	Surface Mount	8-SOIC (0.154", 3.90mm Width)	8-SOIC
	AB-RTCMC-32.768KHZ-EOA9-S3-DBT IC RTC CLK/CALENDAR SPI MODULE Abracon LLC	14	$4.36			Tape & Reel (TR)	Active	Clock/Calendar	Alarm, EEPROM, Leap Year, Square Wave Output, SRAM, TCXO/Crystal, Trickle-Charger	8B	HH:MM:SS (12/24 hr)	YY-MM-DD-dd	SPI	1.4V ~ 5.5V	1.4V ~ 5.5V	1.5µA ~ 2.2µA @ 1.4V ~ 5V	-40°C ~ 85°C	Surface Mount	10-SMD Module	Module
	DS1374C-33#T&R IC RTC BINARY CNT I2C 16-SOIC Analog Devices Inc./Maxim Integrated	144	$6.46			Tape & Reel (TR)	Active	Binary Counter	Alarm, Square Wave Output, Trickle-Charger, Watchdog Timer	-	Binary	Binary	I²C, 2-Wire Serial	2.97V ~ 5.5V	1.3V ~ 5.5V	175µA @ 2.97V ~ 5.5V	-40°C ~ 85°C	Surface Mount	16-SOIC (0.295", 7.50mm Width)	16-SOIC
	PT7C4337ACSEX IC RTC CAL I2C/2-WIRE SER 16SOIC Diodes Incorporated	49	$4.18			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 (TA)	Surface Mount	16-SOIC (0.295", 7.50mm Width)	16-SOIC