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
	BQ3285S-SB2 IC RTC CLK/CALENDAR PAR 24-SOP Texas Instruments	66	$13.49			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	-	0°C ~ 70°C	Surface Mount	24-SOIC (0.295", 7.50mm Width)	24-SOIC
	DS1747WP-120IND+ IC RTC CLK/CALENDAR PAR 34-PCM Analog Devices Inc./Maxim Integrated	8	$46.28			Tray	Active	Clock/Calendar	Leap Year, NVSRAM, Y2K	512KB	HH:MM:SS (24 hr)	YY-MM-DD-dd	Parallel	2.97V ~ 3.63V	3V	2mA @ 3.3V	-40°C ~ 85°C	Surface Mount	34-PowerCap™ Module	34-PowerCap Module
	CBC92141C-Q3-TR3 POWER MANAGER / RTC 4.1V VBAT Cymbet Corporation	93	$1.66			Tape & Reel (TR)	Active	Clock/Calendar	Alarm, Backup Supply Charger, Leap Year, RAM	64B	HH:MM:SS:hh (12/24 hr)	YY-MM-DD-dd	I²C	2.5V ~ 5.5V	4.1V	0.06µA @ 2.5V ~ 5.5V	-40°C ~ 85°C	Surface Mount	16-UFQFN Exposed Pad	16-MLPQ (3x3)
	DS1344E-3+T&R IC RTC CLK/CALENDAR SPI 20-TSSOP Analog Devices Inc./Maxim Integrated	6	$5.54			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	20-TSSOP (0.173", 4.40mm Width)	20-TSSOP
	DS1374U-3+ IC RTC BINARY CNT I2C 10-USOP Analog Devices Inc./Maxim Integrated	36	$4.54			Tube	Active	Binary Counter	Alarm, Square Wave Output, Trickle-Charger, Watchdog Timer	-	Binary	Binary	I²C, 2-Wire Serial	2.7V ~ 3.3V	1.3V ~ 3.7V	125µA @ 2.7V ~ 3.3V	-40°C ~ 85°C	Surface Mount	10-TFSOP, 10-MSOP (0.118", 3.00mm Width)	10-uMAX/uSOP
	DS1343E-3+ IC RTC CLK/CALENDAR SPI 20-TSSOP Analog Devices Inc./Maxim Integrated	127	$6.05			Tube	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	20-TSSOP (0.173", 4.40mm Width)	20-TSSOP
	DS17285SN-3+ IC RTC CLK/CALENDAR PAR 24-SOIC Analog Devices Inc./Maxim Integrated	8	$11.09			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	-40°C ~ 85°C	Surface Mount	24-SOIC (0.295", 7.50mm Width)	24-SOIC
	M48T201V-85MH1F IC RTC CLK/CALENDAR PAR 44-SOH STMicroelectronics	33	$16.87		Timekeeper®	Tape & Reel (TR)	Active	Clock/Calendar	Alarm, Leap Year, Square Wave Output, Supervisor, Watchdog Timer, Y2K	-	HH:MM:SS (24 hr)	YY-MM-DD-dd	Parallel	3V ~ 3.6V	3V	2mA @ 3V ~ 3.6V	0°C ~ 70°C	Surface Mount	44-BSOP (0.337", 8.56mm Width) requires SNAPHAT	44-SOH
	DS1315-33+ IC RTC PHANTOM PAR 16-DIP Analog Devices Inc./Maxim Integrated	25	$17.82			Tube	Active	Phantom Time Chip	Leap Year	-	HH:MM:SS:hh (12/24 hr)	YY-MM-DD-dd	Parallel	3V ~ 3.6V	2.5V ~ 3.7V	1.1mA @ 3.3V	0°C ~ 70°C	Through Hole	16-DIP (0.300", 7.62mm)	16-PDIP
	DS17885S-5+ IC RTC CLK/CALENDAR PAR 24-SOIC Analog Devices Inc./Maxim Integrated	14	$19.03			Tube	Active	Clock/Calendar	Alarm, Daylight Savings, Leap Year, NVSRAM, Square Wave Output	8KB	HH:MM:SS (12/24 hr)	YY-MM-DD-dd	Parallel	4.5V ~ 5.5V	2.5V ~ 3.7V	3mA @ 4.5V ~ 5.5V	0°C ~ 70°C	Surface Mount	24-SOIC (0.295", 7.50mm Width)	24-SOIC
	DS1315SN-33+ IC RTC PHANTOM PAR 16-SOIC Analog Devices Inc./Maxim Integrated	40	$20.68			Tube	Active	Phantom Time Chip	Leap Year	-	HH:MM:SS:hh (12/24 hr)	YY-MM-DD-dd	Parallel	3V ~ 3.6V	2.5V ~ 3.7V	1.1mA @ 3.3V	-40°C ~ 85°C	Surface Mount	16-SOIC (0.295", 7.50mm Width)	16-SOIC
	DS1375T 2-WIRE DIGITAL INPUT RTC Analog Devices Inc./Maxim Integrated	608	$0.71			Tube	Active	-	-	-	-	-	-	-	-	-	-	-	-	-
	X1205V8 RTC, VOLATILE Intersil	12	$1.06			Tube	Obsolete	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 ~ 5V	0°C ~ 70°C	Surface Mount	8-TSSOP (0.173", 4.40mm Width)	8-TSSOP
	ISL12021CVZ RTC, NON-VOLATILE Intersil	204	$1.15			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	5.5µA ~ 6.5µA @ 3V ~ 5V	-20°C ~ 70°C	Surface Mount	14-TSSOP (0.173", 4.40mm Width)	14-TSSOP
	BQ3285ESS-TR1 RTC, NON-VOLATILE, 1 TIMER(S) Texas Instruments	253	$1.38			Bulk	Active	-	-	-	-	-	-	-	-	-	-	-	-	-
	ISL1208IU8 RTC, NON-VOLATILE Intersil	410	$1.42			Tube	Obsolete	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-TSSOP, 8-MSOP (0.118", 3.00mm Width)	8-MSOP
	S-35399A03-J8T1U RTC ABLIC Inc.	2	$2.90		S-35399A03	Tape & Reel (TR)	Active	Clock/Calendar	Alarm, Leap Year	-	HH:MM:SS (12/24 hr)	YY-MM-DD-dd	I²C, 2-Wire Serial	1.3V ~ 5.5V	-	14µA ~ 30µA @ 3V ~ 5V	-40°C ~ 85°C (TA)	Surface Mount	8-SOIC (0.154", 3.90mm Width)	8-SOP-J
	ISL1208IU8-TK RTC, NON-VOLATILE Intersil	458	$1.61			Bulk	Obsolete	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-TSSOP, 8-MSOP (0.118", 3.00mm Width)	8-MSOP
	ISL12030IBZ RTC, VOLATILE Intersil	208	$1.72			Tube	Obsolete	Clock/Calendar	Alarm, Daylight Savings, SRAM	128B	HH:MM:SS:hh (12/24 hr)	YY-MM-DD-dd	I²C, 2-Wire Serial	2.7V ~ 5.5V	-	18µA @ 5.5V	-40°C ~ 85°C	Surface Mount	8-SOIC (0.154", 3.90mm Width)	8-SOIC
	ISL12058IRUZ-T REAL TIME CLOCK Elantec	76	$1.84			Bulk	Obsolete	Clock/Calendar	Alarm, Leap Year	-	HH:MM:SS (12/24 hr)	YY-MM-DD-dd	I²C	1.8V ~ 3.6V	-	0.65µA @ 1.8V	-40°C ~ 85°C	Surface Mount	8-UFDFN	8-µTDFN (2x2)