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
	PCF2131TFY IC RTC W/XTAL HLSON16 NXP USA Inc.	198	$3.87			Tape & Reel (TR)	Active	Clock/Calendar	Alarm, Leap Year, SRAM, Watchdog Timer	8B	HH:MM:SS:hh (12/24 hr)	YY-MM-DD-dd	I²C, SPI	1.2V ~ 5.5V	1.2V ~ 5.5V	770nA ~ 2.135µA @ 1.2V ~ 5.5V	-40°C ~ 85°C (TA)	Surface Mount, Wettable Flank	16-LFDFN Exposed Pad	16-HLSON (4.5x3.5)
	M41T93SQA6F IC RTC CLK/CALENDAR SPI 16-QFN STMicroelectronics	96	$4.93			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	3V ~ 5.5V	1.8V ~ 5.5V	10µA @ 5.5V	-40°C ~ 85°C	Surface Mount	16-VQFN Exposed Pad	16-QFN (4x4)
	V3020SO8A+ ULTRA LOW POWER 1-BIT 32KHZ RTC, EM Microelectronic	15	$3.08			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	-	0.8µA @ 5V	-40°C ~ 85°C (TA)	Surface Mount	8-SOIC (0.154", 3.90mm Width)	8-SOIC
	ISL12008IB8Z IC RTC CLK/CALENDAR I2C 8-SOIC Renesas Electronics America Inc	182	$3.29			Tube	Active	Clock/Calendar	Alarm, Leap Year	-	HH:MM:SS:hh (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
	DS1672U-33+ IC RTC BINARY CNT I2C 8-USOP Analog Devices Inc./Maxim Integrated	12	$3.83			Tube	Active	Binary Counter	Trickle-Charger	-	Binary	Binary	I²C, 2-Wire Serial	2.97V ~ 3.63V	1.3V ~ 3.63V	500µA @ 3.63V	-40°C ~ 85°C	Surface Mount	8-TSSOP, 8-MSOP (0.118", 3.00mm Width)	8-uMAX/uSOP
	DS1340C-33#T&R IC RTC CLK/CALENDAR I2C 16-SOIC Analog Devices Inc./Maxim Integrated	56	$6.74			Tape & Reel (TR)	Active	Clock/Calendar	Leap Year, Trickle-Charger	-	HH:MM:SS (24 hr)	YY-MM-DD-dd	I²C, 2-Wire Serial	2.97V ~ 5.5V	1.3V ~ 5.5V	150µA @ 5.5V	-40°C ~ 85°C	Surface Mount	16-SOIC (0.295", 7.50mm Width)	16-SOIC
	ISL12026IBZ-T7A IC RTC CLK/CALENDAR I2C 8-SOIC Renesas Electronics America Inc	89	$6.39			Tape & Reel (TR)	Last Time Buy	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
	DS1340U-18+ IC RTC CLK/CALENDAR I2C 8-USOP Analog Devices Inc./Maxim Integrated	118	$4.62			Tube	Active	Clock/Calendar	Leap Year, Trickle-Charger	-	HH:MM:SS (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
	DS1340U-33+ IC RTC CLK/CALENDAR I2C 8-USOP Analog Devices Inc./Maxim Integrated	43	$4.60			Tube	Active	Clock/Calendar	Leap Year, Trickle-Charger	-	HH:MM:SS (24 hr)	YY-MM-DD-dd	I²C, 2-Wire Serial	2.97V ~ 5.5V	1.3V ~ 5.5V	150µA @ 5.5V	-40°C ~ 85°C	Surface Mount	8-TSSOP, 8-MSOP (0.118", 3.00mm Width)	8-uMAX/uSOP
	DS1388Z-3+ IC RTC CLK/CALENDAR I2C 8-SOIC Analog Devices Inc./Maxim Integrated	137	$6.10			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	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
	DS1337C# IC RTC CLK/CALENDAR I2C 16-SOIC Analog Devices Inc./Maxim Integrated	2	$6.32			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	-	0.6µA @ 1.3V ~ 1.8V	-40°C ~ 85°C	Surface Mount	16-SOIC (0.295", 7.50mm Width)	16-SOIC
	DS1338C-3# IC RTC CLK/CALENDAR I2C 16-SOIC Analog Devices Inc./Maxim Integrated	96	$6.83			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 ~ 3.7V	200µA @ 3.3V	-40°C ~ 85°C	Surface Mount	16-SOIC (0.295", 7.50mm Width)	16-SOIC
	DS1340C-33# IC RTC CLK/CALENDAR I2C 16-SOIC Analog Devices Inc./Maxim Integrated	54	$6.85			Tube	Active	Clock/Calendar	Leap Year, Trickle-Charger	-	HH:MM:SS (24 hr)	YY-MM-DD-dd	I²C, 2-Wire Serial	2.97V ~ 5.5V	1.3V ~ 5.5V	150µA @ 5.5V	-40°C ~ 85°C	Surface Mount	16-SOIC (0.295", 7.50mm Width)	16-SOIC
	M41ST87WSS6F IC RTC CLK/CALENDAR I2C 20-SSOP STMicroelectronics	4	$10.05			Tape & Reel (TR)	Active	Clock/Calendar	Alarm, Leap Year, NVSRAM, Square Wave Output, Supervisor, Watchdog Timer	128B	HH:MM:SS:hh (24 hr)	YY-MM-DD-dd	I²C, 2-Wire Serial	2.7V ~ 3.6V	2.5V ~ 3.6V	0.5mA @ 2.7V ~ 3.6V	-40°C ~ 85°C	Surface Mount	20-SSOP (0.209", 5.30mm Width)	20-SSOP
	DS1685E-5+ IC RTC CLK/CALENDAR PAR 24-TSSOP Analog Devices Inc./Maxim Integrated	19	$7.77			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-TSSOP (0.173", 4.40mm Width)	24-TSSOP
	DS1685SN-5+ IC RTC CLK/CALENDAR PAR 24-SOIC Analog Devices Inc./Maxim Integrated	51	$8.91			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	-40°C ~ 85°C	Surface Mount	24-SOIC (0.295", 7.50mm Width)	24-SOIC
	DS12885S+ IC RTC CLK/CALENDAR PAR 24-SOIC Analog Devices Inc./Maxim Integrated	25	$9.21			Tube	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	24-SOIC (0.295", 7.50mm Width)	24-SOIC
	DS17285SN-5+ IC RTC CLK/CALENDAR PAR 24-SOIC Analog Devices Inc./Maxim Integrated	20	$10.92			Tube	Active	Clock/Calendar	Alarm, Daylight Savings, Leap Year, NVSRAM, Square Wave Output	2KB	HH:MM:SS (12/24 hr)	YY-MM-DD-dd	Parallel	4.5V ~ 5.5V	2.5V ~ 3.7V	3mA @ 4.5V ~ 5.5V	-40°C ~ 85°C	Surface Mount	24-SOIC (0.295", 7.50mm Width)	24-SOIC
	V3022SO28A+ VERY LOW POWER 8-BIT 32KHZ RTC M EM Microelectronic	78	$11.14			Tube	Active	Clock/Calendar	Alarm, Leap Year, RAM	8B	HH:MM:SS:hh (12/24 hr)	YY-MM-DD-dd	-	2V ~ 5.5V	-	15µA @ 3V	-40°C ~ 85°C (TA)	Surface Mount	28-SOIC (0.295", 7.50mm Width)	28-SOIC
	DS17287-3+ IC RTC CLK/CALENDAR PAR 24-EDIP Analog Devices Inc./Maxim Integrated	29	$18.62			Tube	Active	Clock/Calendar	Alarm, Daylight Savings, Leap Year, NVSRAM, Square Wave Output	2KB	HH:MM:SS (12/24 hr)	YY-MM-DD-dd	Parallel	2.7V ~ 3.7V	2.5V ~ 3.7V	2mA @ 2.7V ~ 3.7V	0°C ~ 70°C	Through Hole	24-DIP Module (0.600", 15.24mm)	24-EDIP