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
	DS1685E-3/TR DS1685 5V REAL-TIME CLOCK Analog Devices Inc./Maxim Integrated	223	$3.50			Bulk	Active	-	-	-	-	-	-	-	-	-	-	-	-	-
	DS1302SN-16/TR TRICKLE-CHARGE TIMEKEEPING CHIP Analog Devices Inc./Maxim Integrated	199	$3.71			Bulk	Active	-	-	-	-	-	-	-	-	-	-	-	-	-
	ISL12025IVZ-T RTC, NON-VOLATILE Intersil	233	$3.83			Bulk	Obsolete	Clock/Calendar	Alarm, Leap Year, Supervisor, Unique ID, 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
	ISL12023IVZ RTC, NON-VOLATILE Intersil	43	$3.83			Tube	Obsolete	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	14-TSSOP (0.173", 4.40mm Width)	14-TSSOP
	X1228S14I-4.5A RTC, VOLATILE Intersil	12	$4.77			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	-40°C ~ 85°C	Surface Mount	14-SOIC (0.154", 3.90mm Width)	14-SOIC
	DS17285S-3/TR DS17285 REAL-TIME CLOCK Analog Devices Inc./Maxim Integrated	108	$5.00			Bulk	Active	-	-	-	-	-	-	-	-	-	-	-	-	-
	DS17285S-5+TR DS17285 REAL-TIME CLOCK Analog Devices Inc./Maxim Integrated	124	$5.35			Bulk	Active	-	-	-	-	-	-	-	-	-	-	-	-	-
	CDP68HC68T1M96 SERIAL RTC WITH RAM Intersil	133	$5.56			Bulk	Obsolete	Clock/Calendar	Alarm, Leap Year, Square Wave Output, Watchdog Timer	32B	HH:MM:SS (12/24 hr)	YY-MM-DD-dd	SPI	3V ~ 6V	2.2V ~ 6V	20µA ~ 500µA @ 5V	-40°C ~ 85°C	Surface Mount	20-SOIC (0.295", 7.50mm Width)	20-SOIC
	UPD4991AGS-A RTC, VOLATILE, 1 TIMER(S) PDSO Renesas Electronics America Inc	39	$6.00			Bulk	Active	-	-	-	-	-	-	-	-	-	-	-	-	-
	LV8572AN REAL TIME CLOCK, 0 TIMER(S) National Semiconductor	65	$9.34			Bulk	Active	-	-	-	-	-	-	-	-	-	-	-	-	-
	CDP6818D CMOS REAL-TIME CLOCK WITH RAM Harris Corporation	51	$11.11			Bulk	Active	Clock/Calendar	Alarm, Leap Year, Square Wave Output	50B	HH:MM:SS (12/24 hr)	YY-MM-DD-dd	-	3V ~ 6V	-	50µA ~ 3mA @ 3V ~ 5V	0°C ~ 70°C (TA)	Through Hole	24-CDIP (0.300", 7.62mm)	24-CERDIP
	CDP68HC68T1M SERIAL RTC WITH RAM Intersil	3	$11.18			Tube	Obsolete	Clock/Calendar	Alarm, Leap Year, Square Wave Output, Watchdog Timer	32B	HH:MM:SS (12/24 hr)	YY-MM-DD-dd	SPI	3V ~ 6V	2.2V ~ 6V	20µA ~ 500µA @ 5V	-40°C ~ 85°C	Surface Mount	20-SOIC (0.295", 7.50mm Width)	20-SOIC
	CDP68HC68T1E SERIAL RTC WITH RAM Intersil	33	$12.82			Tube	Obsolete	Clock/Calendar	Alarm, Leap Year, Square Wave Output, Watchdog Timer	32B	HH:MM:SS (12/24 hr)	YY-MM-DD-dd	SPI	3V ~ 6V	2.2V ~ 6V	20µA ~ 500µA @ 5V	-40°C ~ 85°C	Through Hole	16-DIP (0.300", 7.62mm)	16-PDIP
	LV8571AN RTC, VOLATILE, 2 TIMER(S) National Semiconductor	37	$13.04			Bulk	Active	-	-	-	-	-	-	-	-	-	-	-	-	-
	DP8573AVX REAL TIME CLOCK, VOLATILE, 0 TIM National Semiconductor	32	$14.00			Bulk	Active	Clock/Calendar	Alarm, Leap Year	-	HH:MM:SS:hh (12/24 hr)	YY-MM-DD-dd	Parallel	4.5V ~ 5.5V	2.2V ~ 5.1V	1µA @ 5V	-40°C ~ 85°C	Surface Mount	28-LCC (J-Lead)	28-PLCC (11.51x11.51)
	DP8573AV REAL TIME CLOCK, VOLATILE, 0 TIM National Semiconductor	57	$15.48			Bulk	Active	Clock/Calendar	Alarm, Leap Year	-	HH:MM:SS:hh (12/24 hr)	YY-MM-DD-dd	Parallel	4.5V ~ 5.5V	2.2V ~ 5.1V	1µA @ 5V	-40°C ~ 85°C	Surface Mount	28-LCC (J-Lead)	28-PLCC (11.51x11.51)
	DS1248Y-200 1024K NV SRAM & PHANTOM CLOCK Analog Devices Inc./Maxim Integrated	35	$20.73			Bulk	Active	-	-	-	-	-	-	-	-	-	-	-	-	-
	DS1248Y-120 1024K NV SRAM & PHANTOM CLOCK Analog Devices Inc./Maxim Integrated	31	$22.01			Bulk	Active	-	-	-	-	-	-	-	-	-	-	-	-	-
	DP8570AVX REAL TIME CLOCK, VOLATILE, 2 TIM National Semiconductor	37	$22.12			Bulk	Active	Timer Clock Peripheral (TCP)	Alarm, Leap Year	44B	HH:MM:SS:hh (12/24 hr)	YY-MM-DD-dd	Parallel	4.5V ~ 5.5V	2.2V ~ 5.1V	1µA @ 5V	-40°C ~ 85°C	Surface Mount	28-LCC (J-Lead)	28-PLCC (11.51x11.51)
	DP8570AV REAL TIME CLOCK, VOLATILE, 2 TIM National Semiconductor	26	$24.04			Bulk	Active	Timer Clock Peripheral (TCP)	Alarm, Leap Year	44B	HH:MM:SS:hh (12/24 hr)	YY-MM-DD-dd	Parallel	4.5V ~ 5.5V	2.2V ~ 5.1V	1µA @ 5V	-40°C ~ 85°C	Surface Mount	28-LCC (J-Lead)	28-PLCC (11.51x11.51)