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
	ISL12059IBZ-T REAL TIME CLOCK Elantec	169	$1.81			Bulk	Obsolete	Clock/Calendar	Leap Year	-	HH:MM:SS (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
	ISL12057IRUZ-T RTC, VOLATILE Intersil	339	$1.79			Bulk	Obsolete	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-UFDFN	8-µTDFN (2x2)
	ISL12059IBZ RTC, NON-VOLATILE Intersil	17	$1.82			Tube	Obsolete	Clock/Calendar	Leap Year	-	HH:MM:SS (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
	X1227S8Z-2.7A RTC, NON-VOLATILE Intersil	425	$2.25			Tube	Obsolete	Clock/Calendar	Alarm, Leap Year, Supervisor, Watchdog Timer	-	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 ~ 5V	0°C ~ 70°C	Surface Mount	8-SOIC (0.154", 3.90mm Width)	8-SOIC
	DS1338U-33+T&R IC RTC CLK/CALENDAR I2C 8-USOP Analog Devices Inc./Maxim Integrated	214	$3.96			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	3V ~ 5.5V	1.3V ~ 3.7V	125µA ~ 200µA @ 3.63V ~ 5.5V	-40°C ~ 85°C	Surface Mount	8-TSSOP, 8-MSOP (0.118", 3.00mm Width)	8-uMAX/uSOP
	BQ3285LCS TIMER OR RTC, VOLATILE, CMOS Texas Instruments	322	$2.31			Bulk	Active	-	-	-	-	-	-	-	-	-	-	-	-	-
	X1288V14IZ REAL TIME CLOCK, 1 TIMER(S) Intersil	147	$2.32			Bulk	Active	-	-	-	-	-	-	-	-	-	-	-	-	-
	BQ3285ESS-N REAL TIME CLOCK, 1 TIMER(S) Texas Instruments	353	$2.42			Bulk	Active	-	-	-	-	-	-	-	-	-	-	-	-	-
	DS1344D-18+TR LOW-CURRENT SPI/3-WIRE RTC Analog Devices Inc./Maxim Integrated	49	$2.45			Bulk	Active	-	-	-	-	-	-	-	-	-	-	-	-	-
	ISL12032IVZ-T RTC, NON-VOLATILE Intersil	217	$2.68			Bulk	Obsolete	Time Event Recorder	Alarm, SRAM, Trickle-Charger	128B	HH:MM:SS:hh (12/24 hr)	YY-MM-DD-dd	I²C, 2-Wire Serial	2.7V ~ 5.5V	1.8V ~ 5.5V	18µA @ 5.5V	-40°C ~ 85°C	Surface Mount	14-TSSOP (0.173", 4.40mm Width)	14-TSSOP
	DS3231N/DIP EXTREMELY ACCURATE I2C-INTEGRATE Analog Devices Inc./Maxim Integrated	13	$2.77			Bulk	Active	-	-	-	-	-	-	-	-	-	-	-	-	-
	MAX6901ETA-T MAX6901 3-WIRE SERIAL RTC Analog Devices Inc./Maxim Integrated	127	$2.88			Bulk	Active	-	-	-	-	-	-	-	-	-	-	-	-	-
	MAX6902ETA-C6P MAX6902 SPI-COMPATIBLE RTC Analog Devices Inc./Maxim Integrated	262	$3.00			Bulk	Active	-	-	-	-	-	-	-	-	-	-	-	-	-
	DS1339C-3 DS1339 I2C SERIAL RTC Analog Devices Inc./Maxim Integrated	186	$3.10			Bulk	Active	-	-	-	-	-	-	-	-	-	-	-	-	-
	MAX6901ETA MAX6901 3-WIRE SERIAL RTC Analog Devices Inc./Maxim Integrated	294	$3.13			Bulk	Active	-	-	-	-	-	-	-	-	-	-	-	-	-
	ECS-RTC-3225-5699HS-TR IC RTC CLK/CALENDAR I2C MODULE ECS Inc.	93	$6.31			Tape & Reel (TR)	Active	Clock/Calendar	-	-	HH:MM:SS	YY-MM-DD	I²C	1.6V ~ 5V, 2.5V ~ 5V	1.6V ~ 5V	0.5µA @ 3V	-40°C ~ 85°C	Surface Mount	10-SMD, No Lead	10-SMD
	ISL12027IV27AZ RTC, NON-VOLATILE Intersil	199	$3.42			Tube	Obsolete	Clock/Calendar	Alarm, Leap Year, Supervisor, Watchdog Timer	-	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
	ISL12029AIB27Z REAL TIME CLOCK Intersil	212	$3.37			Tube	Obsolete	Clock/Calendar	Alarm, Leap Year, Supervisor, Watchdog Timer	-	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	14-SOIC (0.154", 3.90mm Width)	14-SOIC
	ISL12027IB27AZ-T RTC, NON-VOLATILE Intersil	213	$3.39			Bulk	Obsolete	Clock/Calendar	Alarm, Leap Year, Supervisor, Watchdog Timer	-	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
	ISL12027IV30AZ RTC, NON-VOLATILE Intersil	100	$3.44			Tube	Obsolete	Clock/Calendar	Alarm, Leap Year, Supervisor, Watchdog Timer	-	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